| 1 | ! ================================================================================================================================= |
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| 2 | ! MODULE : stomate_litter |
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| 3 | ! |
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| 4 | ! CONTACT : orchidee-help _at_ ipsl.jussieu.fr |
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| 5 | ! |
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| 6 | ! LICENCE : IPSL (2006) |
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| 7 | ! This software is governed by the CeCILL licence see ORCHIDEE/ORCHIDEE_CeCILL.LIC |
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| 8 | ! |
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| 9 | !>\BRIEF Update litter and lignine content after litter fall and |
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| 10 | !! calculating litter decomposition. |
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| 11 | !! |
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| 12 | !!\n DESCRIPTION: None |
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| 13 | !! |
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| 14 | !! RECENT CHANGE(S): None |
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| 15 | !! |
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| 16 | !! REFERENCE(S) : None |
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| 17 | !! |
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| 18 | !! SVN : |
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| 19 | !! $HeadURL$ |
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| 20 | !! $Date$ |
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| 21 | !! $Revision$ |
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| 22 | !! \n |
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| 23 | !_ ================================================================================================================================ |
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| 24 | |
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| 25 | MODULE stomate_litter |
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| 26 | |
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| 27 | ! modules used: |
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| 28 | |
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| 29 | USE ioipsl_para |
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| 30 | USE stomate_data |
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| 31 | USE constantes |
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| 32 | USE constantes_soil |
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| 33 | USE pft_parameters |
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| 34 | |
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| 35 | IMPLICIT NONE |
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| 36 | |
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| 37 | ! private & public routines |
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| 38 | |
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| 39 | PRIVATE |
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| 40 | PUBLIC littercalc,littercalc_clear, deadleaf |
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| 41 | |
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| 42 | |
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| 43 | |
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| 44 | LOGICAL, SAVE :: firstcall = .TRUE. !! first call |
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| 45 | !$OMP THREADPRIVATE(firstcall) |
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| 46 | |
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| 47 | CONTAINS |
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| 48 | |
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| 49 | !! ================================================================================================================================ |
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| 50 | !! SUBROUTINE : littercalc_calc |
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| 51 | !! |
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| 52 | !!\BRIEF Set the flag ::firstcall to .TRUE. and as such activate section |
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| 53 | !! 1.1 of the subroutine littercalc (see below). |
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| 54 | !! |
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| 55 | !! DESCRIPTION : None |
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| 56 | !! |
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| 57 | !! RECENT CHANGE(S) : None |
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| 58 | !! |
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| 59 | !! MAIN OUTPUT VARIABLE(S) : None |
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| 60 | !! |
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| 61 | !! REFERENCE(S) : None |
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| 62 | !! |
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| 63 | !! FLOWCHART : None |
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| 64 | !! \n |
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| 65 | !_ ================================================================================================================================ |
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| 66 | |
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| 67 | SUBROUTINE littercalc_clear |
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| 68 | firstcall =.TRUE. |
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| 69 | END SUBROUTINE littercalc_clear |
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| 70 | |
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| 71 | |
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| 72 | !! ================================================================================================================================ |
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| 73 | !! SUBROUTINE : littercalc |
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| 74 | !! |
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| 75 | !!\BRIEF Calculation of the litter decomposition and therefore of the |
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| 76 | !! heterotrophic respiration from litter following Parton et al. (1987). |
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| 77 | !! |
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| 78 | !! DESCRIPTION : The littercal routine splits the litter in 4 pools: |
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| 79 | !! aboveground metaboblic, aboveground structural, belowground metabolic and |
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| 80 | !! belowground structural. the fraction (F) of plant material going to metabolic |
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| 81 | !! and structural is defined following Parton et al. (1987). The below ground |
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| 82 | !! litter is discretized over 11 layers (the same used by the CWRR hydrology |
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| 83 | !! scheme). |
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| 84 | !! \latexonly |
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| 85 | !! \input{littercalc1.tex} |
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| 86 | !! \endlatexonly |
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| 87 | !! \n |
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| 88 | !! where L is the lignin content of the plant carbon pools considered and CN |
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| 89 | !! its CN ratio. L and CN are fixed parameters for each plant carbon pools, |
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| 90 | !! therefore it is the ratio between each plant carbon pool within a PFT, which |
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| 91 | !! controlled the part of the total litter, that will be considered as |
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| 92 | !! recalcitrant (i.e. structural litter) or labile (i.e. metabolic litter).\n |
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| 93 | !! |
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| 94 | !! The routine calculates the fraction of aboveground litter which is metabolic |
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| 95 | !! or structural (the litterpart variable) which is then used in lpj_fire.f90.\n |
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| 96 | !! |
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| 97 | !! In the section 2, the routine calculate the new plant material entering the |
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| 98 | !! litter pools by phenological death of plants organs (corresponding to the |
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| 99 | !! variable turnover) and by fire, herbivory and others non phenological causes |
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| 100 | !! (variable bm_to_litter). This calculation is first done for each PFT and then |
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| 101 | !! the values calculated for each PFT are added up. Following the same approach |
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| 102 | !! the lignin content of the total structural litter is calculated and will be |
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| 103 | !! then used as a factor control of the decomposition of the structural litter |
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| 104 | !! (lignin_struc) in the section 5.1.2. A test is performed to avoid that we add |
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| 105 | !! more lignin than structural litter. Finally, the variable litterpart is |
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| 106 | !! updated.\n |
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| 107 | !! |
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| 108 | !! In the section 3 and 4 the temperature and the moisture controlling the |
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| 109 | !! decomposition are calculated for above and belowground. For aboveground |
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| 110 | !! litter, air temperature and litter moisture are calculated in sechiba and used |
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| 111 | !! directly. For belowground, soil temperature and moisture are also calculated |
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| 112 | !! in sechiba but are modulated as a function of the soil depth. The modulation |
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| 113 | !! is a multiplying factor exponentially distributed between 0 (in depth) and 1 |
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| 114 | !! in surface.\n |
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| 115 | !! |
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| 116 | !! Then, in the section 5 and 6, the routine calculates the structural litter decomposition |
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| 117 | !! (C) following first order kinetics following Parton et al. (1987). |
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| 118 | !! \latexonly |
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| 119 | !! \input{littercalc2.tex} |
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| 120 | !! \endlatexonly |
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| 121 | !! \n |
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| 122 | !! with k the decomposition rate of the structural litter. |
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| 123 | !! k corresponds to |
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| 124 | !! \latexonly |
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| 125 | !! \input{littercalc3.tex} |
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| 126 | !! \endlatexonly |
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| 127 | !! \n |
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| 128 | !! with littertau the turnover rate, T a function of the temperature and M a function of |
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| 129 | !! the moisture described below.\n |
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| 130 | !! |
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| 131 | !! Then, the fraction of dead leaves (DL) composed by aboveground structural litter is |
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| 132 | !! calculated as following |
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| 133 | !! \latexonly |
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| 134 | !! \input{littercalc4.tex} |
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| 135 | !! \endlatexonly |
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| 136 | !! \n |
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| 137 | !! with k the decomposition rate of the structural litter previously |
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| 138 | !! described.\n |
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| 139 | !! |
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| 140 | !! In the section 5.1 and 6.1, the fraction of decomposed structural litter |
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| 141 | !! incorporated to the soil (Input) and its associated heterotrophic respiration are |
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| 142 | !! calculated. For structural litter, the C decomposed could go in the active |
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| 143 | !! soil carbon pool or in the slow carbon, as described in |
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| 144 | !! stomate_soilcarbon.f90.\n |
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| 145 | !! \latexonly |
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| 146 | !! \input{littercalc5.tex} |
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| 147 | !! \endlatexonly |
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| 148 | !! \n |
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| 149 | !! with f a parameter describing the fraction of structural litter incorporated |
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| 150 | !! into the considered soil carbon pool, C the amount of litter decomposed and L |
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| 151 | !! the amount of lignin in the litter. The litter decomposed which is not |
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| 152 | !! incorporated into the soil is respired.\n |
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| 153 | !! |
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| 154 | !! In the section 5.2 and 6.2, the fraction of decomposed metabolic litter |
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| 155 | !! incorporated to the soil and its associated heterotrophic respiration are |
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| 156 | !! calculated with the same approaches presented for 5.1 but no control factor |
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| 157 | !! depending on the lignin content are used.\n |
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| 158 | !! |
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| 159 | !! In the section 7 the dead leaf cover is calculated through a call to the |
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| 160 | !! deadleaf subroutine presented below.\n |
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| 161 | !! |
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| 162 | !! MAIN OUTPUT VARIABLES: ::deadleaf_cover, ::resp_hetero_litter, |
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| 163 | !! ::control_temp, ::control_moist |
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| 164 | !! |
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| 165 | !! REFERENCES: |
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| 166 | !! - Parton, WJ, Schimel, DS, Cole, CV, and Ojima, DS. 1987. Analysis |
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| 167 | !! of factors controlling soil organic matter levels in Great Plains |
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| 168 | !! grasslands. Soil Science Society of America journal (USA) |
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| 169 | !! (51):1173-1179. |
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| 170 | !! - Lardy, R, et al., A new method to determine soil organic carbon equilibrium, |
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| 171 | !! Environmental Modelling & Software (2011), doi:10.1016|j.envsoft.2011.05.016 |
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| 172 | !! |
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| 173 | !! FLOWCHART : |
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| 174 | !! \latexonly |
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| 175 | !! \includegraphics(scale=0.5){littercalcflow.jpg} |
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| 176 | !! \endlatexonly |
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| 177 | !! \n |
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| 178 | !_ ================================================================================================================================ |
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| 179 | |
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| 180 | SUBROUTINE littercalc (npts, dt, & |
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| 181 | turnover, bm_to_litter, & |
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| 182 | veget_max, tsurf, tsoil, soilhum, litterhum, rprof, & |
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| 183 | litterpart, litter_above, litter_below, dead_leaves, & |
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| 184 | lignin_struc_above, lignin_struc_below, & |
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| 185 | deadleaf_cover, resp_hetero_litter, resp_hetero_flood, & |
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| 186 | control_temp_above, control_temp_soil, & |
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| 187 | control_moist_above, control_moist_soil, & |
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| 188 | litter_mc,soilcarbon_input, floodcarbon_input, soil_mc, soiltile, & |
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| 189 | clay, bulk_dens, soil_ph, poor_soils, carbon, flood_frac) |
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| 190 | |
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| 191 | !! 0. Variable and parameter declaration |
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| 192 | |
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| 193 | !! 0.1 Input variables |
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| 194 | |
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| 195 | INTEGER(i_std), INTENT(in) :: npts !! Domain size - number of grid pixels |
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| 196 | REAL(r_std), INTENT(in) :: dt !! Time step of the simulations for stomate |
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| 197 | !! @tex $(dtradia one\_day^{-1})$ @endtex |
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| 198 | REAL(r_std), DIMENSION(npts,nvm,nparts,nelements), INTENT(in) :: turnover !! Turnover rates of plant biomass |
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| 199 | !! @tex $(gC m^{-2} dt\_slow^{-1})$ @endtex |
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| 200 | REAL(r_std), DIMENSION(npts,nvm,nparts,nelements), INTENT(in) :: bm_to_litter !! Conversion of biomass to litter |
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| 201 | !! @tex $(gC m^{-2} dt\_slow^{-1})$ @endtex |
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| 202 | REAL(r_std),DIMENSION(npts,nvm),INTENT(in) :: veget_max !! PFT "Maximal" coverage fraction of a PFT |
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| 203 | !! defined in the input vegetation map |
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| 204 | !! @tex $(m^2 m^{-2})$ @endtex |
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| 205 | REAL(r_std), DIMENSION(npts), INTENT(in) :: tsurf !! Temperature (K) at the surface |
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| 206 | REAL(r_std), DIMENSION(npts,nbdl), INTENT(in) :: tsoil !! Soil temperature (K) |
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| 207 | REAL(r_std), DIMENSION(npts,nbdl), INTENT(in) :: soilhum !! Daily soil humidity of each soil layer |
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| 208 | !! (unitless) |
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| 209 | REAL(r_std), DIMENSION(npts), INTENT(in) :: litterhum !! Daily litter humidity (unitless) |
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| 210 | REAL(r_std), DIMENSION(npts,nvm), INTENT(in) :: rprof !! PFT root depth as calculated in stomate.f90 from parameter |
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| 211 | !! humcste which is root profile for different PFTs |
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| 212 | !! in slowproc.f90 (m) |
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| 213 | REAL(r_std),DIMENSION (npts,nstm), INTENT(in) :: litter_mc !! soil moisture content \f($m^3 \times m^3$)\f |
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| 214 | REAL(r_std),DIMENSION (npts,nbdl,nstm), INTENT(in) :: soil_mc !! soil moisture content \f($m^3 \times m^3$)\f |
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| 215 | REAL(r_std),DIMENSION (npts,nstm), INTENT (in) :: soiltile !! Fraction of each soil tile (0-1, unitless) |
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| 216 | REAL(r_std), DIMENSION(npts), INTENT(in) :: clay !! Clay fraction (unitless, 0-1) |
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| 217 | REAL(r_std), DIMENSION(npts), INTENT(inout) :: bulk_dens !! Variable local of bulk density for the moment must change in the futur (kg m-3) |
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| 218 | |
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| 219 | REAL(r_std), DIMENSION(npts), INTENT(in) :: soil_ph !! soil pH (pH unit, 0-14) |
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| 220 | REAL(r_std), DIMENSION(npts), INTENT(in) :: poor_soils !! Fraction of poor soils (0-1) |
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| 221 | REAL(r_std), DIMENSION(npts,ncarb,nvm,nbdl), INTENT(in) :: carbon !! Soil carbon pools: active, slow, or passive, \f$(gC m^{2})$\f |
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| 222 | REAL(r_std), DIMENSION(npts), INTENT(in) :: flood_frac !! flooded fraction, needed to calculate heterotrophic respiration input to floodplain |
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| 223 | !! 0.2 Output variables |
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| 224 | |
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| 225 | REAL(r_std), DIMENSION(npts), INTENT(out) :: deadleaf_cover !! Fraction of soil covered by dead leaves |
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| 226 | !! over all PFTs (0-1, unitless) |
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| 227 | REAL(r_std), DIMENSION(npts,nvm,nlevs), INTENT(out) :: resp_hetero_litter !! Litter heterotrophic respiration. The unit |
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| 228 | !! is given by m^2 of ground. |
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| 229 | !! @tex $(gC dtradia one\_day^{-1}) m^{-2})$ @endtex |
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| 230 | REAL(r_std), DIMENSION(npts,nvm), INTENT(out) :: resp_hetero_flood !! Litter heterotrophic respiration in flooded areas. |
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| 231 | !! The unit is given by m^2 of ground. |
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| 232 | !! @tex $(gC dtradia one\_day^{-1}) m^{-2})$ @endtex |
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| 233 | REAL(r_std), DIMENSION(npts,nbdl,npool*2), INTENT(out) :: control_temp_soil !! Temperature control of heterotrophic |
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| 234 | !! respiration belowground,(0-1, unitless) |
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| 235 | REAL(r_std), DIMENSION(npts,nbdl,nvm), INTENT(out) :: control_moist_soil !! Moisture control of heterotrophic |
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| 236 | !! respiration aboveground(0.25-1,unitless) |
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| 237 | REAL(r_std), DIMENSION(npts,nlitt), INTENT(out) :: control_temp_above !! Temperature control of heterotrophic |
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| 238 | !! respiration, above (0-1, |
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| 239 | !! unitless) |
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| 240 | REAL(r_std), DIMENSION(npts,nvm), INTENT(out) :: control_moist_above!! Moisture control of heterotrophic |
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| 241 | !! respiration aboveground(0.25-1, unitless) |
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| 242 | |
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| 243 | !! 0.3 Modified variables |
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| 244 | |
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| 245 | REAL(r_std), DIMENSION(npts,nvm,nlitt), INTENT(inout) :: litterpart !! Fraction of litter above the ground |
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| 246 | !! belonging to the different PFTs (0-1, |
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| 247 | !! unitless) |
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| 248 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nelements), INTENT(inout) :: litter_above !! Metabolic and structural litter,above ground |
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| 249 | !! The unit is given by m^2 of |
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| 250 | !! ground @tex $(gC m^{-2})$ @endtex |
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| 251 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements), INTENT(inout) ::litter_below !! Metabolic and structural litter, below ground |
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| 252 | !! The unit is given by m^2 of |
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| 253 | !! ground @tex $(gC m^{-2} $ @endtex |
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| 254 | REAL(r_std), DIMENSION(npts,nvm,nlitt), INTENT(inout) :: dead_leaves !! Dead leaves per ground unit area, per PFT, |
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| 255 | !! metabolic and structural in |
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| 256 | !! @tex $(gC m^{-2})$ @endtex |
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| 257 | REAL(r_std), DIMENSION(npts,nvm), INTENT(inout) :: lignin_struc_above !! Ratio Lignin content in structural litter, |
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| 258 | !! above ground, (0-1, unitless) |
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| 259 | REAL(r_std), DIMENSION(npts,nvm,nbdl), INTENT(inout) :: lignin_struc_below !! Ratio Lignin content in structural litter, |
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| 260 | !! below ground, (0-1, unitless) |
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| 261 | REAL(r_std), DIMENSION(npts,nvm,nbdl,npool,nelements), INTENT(inout) :: soilcarbon_input !! Dissolved Organic Carbon input from litter decomposition |
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| 262 | !! The unit is given by m^2 |
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| 263 | !! @tex $(gC m^{-2})$ @endtex |
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| 264 | REAL(r_std), DIMENSION(npts,nvm,npool,nelements), INTENT(inout) :: floodcarbon_input !! Dissolved Organic Carbon input from litter |
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| 265 | !! decomposition in flooded areas |
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| 266 | !! The unit is given by m^2 |
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| 267 | !! @tex $(gC m^{-2})$ @endtex |
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| 268 | !! 0.4 Local variables |
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| 269 | |
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| 270 | REAL(r_std), DIMENSION(npts,nvm) :: control_flood_above!! Moisture control of heterotrophic |
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| 271 | !! respiration aboveground(0.25-1, unitless) |
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| 272 | !$OMP THREADPRIVATE(control_flood_above) |
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| 273 | REAL(r_std), SAVE, DIMENSION(nparts,nlitt) :: litterfrac !! The fraction of leaves, wood, etc. that |
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| 274 | !! goes into metabolic and structural |
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| 275 | !! litterpools (0-1, unitless) |
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| 276 | REAL(r_std), DIMENSION(npts,nparts,nlitt) :: litterfrac_pxl !! The fraction of leaves, wood, etc. that |
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| 277 | !! goes into metabolic and structural |
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| 278 | !! litterpools (0-1, unitless) |
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| 279 | !$OMP THREADPRIVATE(litterfrac) |
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| 280 | REAL(r_std),DIMENSION(0:nbdl) :: z_soil !! Soil levels (m) |
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| 281 | !$OMP THREADPRIVATE(z_soil) |
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| 282 | !! profiles (unitless) |
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| 283 | REAL(r_std), SAVE, DIMENSION(nlitt) :: litter_tau !! Turnover time in litter pools (days) |
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| 284 | !$OMP THREADPRIVATE(litter_tau) |
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| 285 | REAL(r_std), SAVE, DIMENSION(npool) :: pool_tau !! Turnover time in litter and soil carbon pools (days) |
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| 286 | !$OMP THREADPRIVATE(pool_tau) |
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| 287 | REAL(r_std), SAVE, DIMENSION(npool) :: DOC_tau !! Residence time of DOC (days) |
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| 288 | !$OMP THREADPRIVATE(DOC_tau) |
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| 289 | REAL(r_std), SAVE, DIMENSION(nlitt,ncarb,nlevs) :: frac_soil !! Fraction of litter that goes into soil |
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| 290 | !! (litter -> carbon, above and below). The |
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| 291 | !! remaining part goes to the atmosphere |
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| 292 | !$OMP THREADPRIVATE(frac_soil) |
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| 293 | REAL(r_std), DIMENSION(npts) :: tsoil_decomp !! Temperature used for decompostition in |
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| 294 | !! soil (K) |
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| 295 | REAL(r_std), DIMENSION(npts) :: soilhum_decomp !! Humidity used for decompostition in soil |
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| 296 | !! (unitless) |
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| 297 | ! REAL(r_std), SAVE, DIMENSION(npts) :: z_lit !! Thickness of the above ground litter layer (mm) |
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| 298 | !!$OMP THREADPRIVATE(z_lit) |
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| 299 | |
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| 300 | REAL(r_std), DIMENSION(npts) :: fd !! Fraction of structural or metabolic litter |
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| 301 | !! decomposed (unitless) |
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| 302 | REAL(r_std), DIMENSION(npts,nelements) :: qd !! Quantity of structural or metabolic litter |
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| 303 | !! decomposed @tex $(gC m^{-2})$ @endtex |
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| 304 | REAL(r_std), DIMENSION(npts,nelements) :: qd_flood !! Quantity of structural or metabolic litter |
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| 305 | !! decomposed in flooded areas @tex $(gC m^{-2})$ @endtex |
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| 306 | REAL(r_std), DIMENSION(npts,nvm) :: old_struc_above !! Old structural litter, above ground |
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| 307 | !! @tex $(gC m^{-2})$ @endtex |
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| 308 | REAL(r_std), DIMENSION(npts,nvm,nbdl) :: old_struc_below !! Old structural litter, below ground |
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| 309 | !! @tex $(gC m^{-2})$ @endtex |
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| 310 | REAL(r_std), DIMENSION(npts,nvm,nlitt, nelements) :: litter_inc_PFT_above !! Increase of litter, per PFT, metabolic and |
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| 311 | !! structural, above ground. The |
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| 312 | !! unit is given by m^2 of ground. |
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| 313 | !! @tex $(gC m^{-2})$ @endtex |
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| 314 | REAL(r_std), DIMENSION(npts,nvm,nlitt,nbdl,nelements) :: litter_inc_PFT_below !! Increase of litter, per PFT, metabolic and |
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| 315 | !! structural, above ground. The |
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| 316 | !!unit is given by m^2 of ground. |
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| 317 | !! @tex $(gC m^{-2})$ @endtex |
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| 318 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nelements) :: litter_inc_above !! Increase of metabolic and structural |
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| 319 | !! litter, above ground. The unit |
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| 320 | !! is given by m^2 of ground. |
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| 321 | !! @tex $(gC m^{-2})$ @endtex |
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| 322 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements) :: litter_inc_below !! Increase of metabolic and structural |
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| 323 | !! litter below ground. The unit |
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| 324 | !! is given by m^2 of ground |
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| 325 | !! @tex $(gC m^{-2})$ @endtex |
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| 326 | |
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| 327 | REAL(r_std), DIMENSION(npts,nvm) :: lignin_struc_inc_above !! Lignin increase in structural litter, |
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| 328 | !! above ground. The unit is given |
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| 329 | !! by m^2 of ground. |
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| 330 | !! @tex $(gC m^{-2})$ @endtex |
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| 331 | REAL(r_std), DIMENSION(npts,nvm,nbdl) :: lignin_struc_inc_below !! Lignin increase in structural litter, |
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| 332 | !! below ground. The unit is given |
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| 333 | !! by m^2 of ground |
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| 334 | !! @tex $(gC m^{-2})$ @endtex |
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| 335 | REAL(r_std), DIMENSION(npts,nvm,nlitt,nelements) :: litter_pft !! Metabolic and structural litter above the |
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| 336 | !! ground per PFT |
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| 337 | REAL(r_std), DIMENSION(npts) :: zdiff_min !! Intermediate field for looking for minimum |
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| 338 | !! of what? this is not used in the code. |
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| 339 | !! [??CHECK] could we delete it? |
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| 340 | CHARACTER(LEN=10), DIMENSION(nlitt) :: litter_str !! Messages to write output information about |
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| 341 | !! the litter |
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| 342 | CHARACTER(LEN=22), DIMENSION(nparts) :: part_str !! Messages to write output information about |
|---|
| 343 | !! the plant |
|---|
| 344 | CHARACTER(LEN=7), DIMENSION(ncarb) :: carbon_str !! Messages to write output information about |
|---|
| 345 | !! the soil carbon |
|---|
| 346 | CHARACTER(LEN=5), DIMENSION(nlevs) :: level_str !! Messages to write output information about |
|---|
| 347 | !! the level (aboveground or belowground litter) |
|---|
| 348 | INTEGER(i_std) :: i,j,k,l,m !! Indices (unitless) |
|---|
| 349 | REAL(r_std), DIMENSION(npts) :: Dif_coef !! Diffusion coeficient used for bioturbation (m2 days-1) |
|---|
| 350 | !!$OMP THREADPRIVATE(Dif_coef) |
|---|
| 351 | |
|---|
| 352 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements) :: litter_flux !! Belowground litter carbon flux within pools towards the soil column\f$(gC m^{2} dt^{-1})$\f |
|---|
| 353 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements) :: litter_flux_old !! Belowground litter carbon flux within pools towards the soil column\f$(gC m^{2} dt^{-1})$\f |
|---|
| 354 | !! used for storage |
|---|
| 355 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nelements) :: litter_above_flux !! Above litter carbon flux within pools towards the soil column\f$(gC m^{2} dt^{-1})$\f |
|---|
| 356 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nelements) :: litter_above_flux_old !! Above litter carbon flux within pools towards the soil column\f$(gC m^{2} dt^{-1})$\f |
|---|
| 357 | !! used for storage |
|---|
| 358 | REAL(r_std), DIMENSION(npts) :: rpc !! Scaling factor for integrating vertical soil |
|---|
| 359 | !! profiles (unitless) |
|---|
| 360 | REAL(r_std), DIMENSION(npts,nvm,nmbcomp,nelements) :: check_intern !! Contains the components of the internal |
|---|
| 361 | !! mass balance chech for this routine |
|---|
| 362 | !! @tex $(gC pixel^{-1} dt^{-1})$ @endtex |
|---|
| 363 | REAL(r_std), DIMENSION(npts,nvm,nelements) :: closure_intern !! Check closure of internal mass balance |
|---|
| 364 | |
|---|
| 365 | REAL(r_std), DIMENSION(npts,nvm,nelements) :: pool_start !! Start and end pool of this routine |
|---|
| 366 | !! @tex $(gC pixel^{-1} dt^{-1})$ @endtex |
|---|
| 367 | REAL(r_std), DIMENSION(npts,nvm,nelements) :: pool_end !! End pool of this routine not corrected |
|---|
| 368 | !! @tex $(gC pixel^{-1} dt^{-1})$ @endtex |
|---|
| 369 | REAL(r_std), DIMENSION(npts,nvm,nelements) :: pool_end_after !! Start and end pool of this routine |
|---|
| 370 | !! @tex $(gC pixel^{-1} dt^{-1})$ @endtex |
|---|
| 371 | REAL(r_std), DIMENSION(npts,nbdl) :: moist_soil !! moisture in soil for one pixel (m3/m3) |
|---|
| 372 | |
|---|
| 373 | ! REAL(r_std), DIMENSION(npts,nvm,nbdl) :: resp_hetero_litter_layer !! Litter heterotrophic respiration per layer. The unit |
|---|
| 374 | !! is given by m^2 of ground by z. |
|---|
| 375 | !! @tex $(gC dtradia one\_day^{-1}) m^{-2} z^{-1})$ @endtex |
|---|
| 376 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements) ::litter_below_old !! Metabolic and structural litter, below ground |
|---|
| 377 | !! The unit is given by m^2 of |
|---|
| 378 | !! ground @tex $(gC m^{-2} $ @endtex used for storage |
|---|
| 379 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nbdl,nelements) ::litter_below_old_buffer !! Metabolic and structural litter, below ground |
|---|
| 380 | !! The unit is given by m^2 of |
|---|
| 381 | !! ground @tex $(gC m^{-2} $ @endtex used for storage |
|---|
| 382 | REAL(r_std), DIMENSION(npts,nlitt,nvm,nelements) :: litter_above_old !! Metabolic and structural litter,above ground |
|---|
| 383 | !! The unit is given by m^2 of |
|---|
| 384 | !! ground @tex $(gC m^{-2})$ @endtex used for storage |
|---|
| 385 | REAL(r_std), DIMENSION(npts) :: one_array |
|---|
| 386 | !_ ================================================================================================================================ |
|---|
| 387 | |
|---|
| 388 | IF (printlev>=3) WRITE(numout,*) 'Entering littercalc' |
|---|
| 389 | |
|---|
| 390 | !! 1. Initialisations of the different fields during the first call of the routine |
|---|
| 391 | !! 1.0 Calculation of soil moisture |
|---|
| 392 | moist_soil(:,:) = zero |
|---|
| 393 | DO l = 1,nbdl |
|---|
| 394 | DO i = 1, nstm |
|---|
| 395 | moist_soil(:,l)= moist_soil(:,l) + soil_mc(:,l,i)*soiltile(:,i) |
|---|
| 396 | ENDDO |
|---|
| 397 | ENDDO |
|---|
| 398 | |
|---|
| 399 | WHERE (bulk_dens(:) .LT. 500) |
|---|
| 400 | bulk_dens(:) = bulk_dens(:)*1e3 |
|---|
| 401 | ENDWHERE |
|---|
| 402 | |
|---|
| 403 | z_soil(0) = zero |
|---|
| 404 | z_soil(1:nbdl) = diaglev(1:nbdl) |
|---|
| 405 | |
|---|
| 406 | !! 1.1 Initialize check for mass balance closure |
|---|
| 407 | ! The mass balance is calculated at the end of this routine |
|---|
| 408 | ! in section 14. Initial biomass and harvest pool and all other |
|---|
| 409 | ! relevant pools were set to zero before calling this routine. |
|---|
| 410 | pool_start(:,:,:) = zero |
|---|
| 411 | IF (ld_doc) THEN |
|---|
| 412 | DO m = 2, nvm |
|---|
| 413 | DO i = 1,nlitt |
|---|
| 414 | DO l = 1, nbdl |
|---|
| 415 | pool_start(:,m,icarbon) = pool_start(:,m,icarbon) + & |
|---|
| 416 | ( litter_below(:,i,m,l,icarbon) ) * veget_max(:,m) |
|---|
| 417 | ENDDO |
|---|
| 418 | ENDDO |
|---|
| 419 | ENDDO |
|---|
| 420 | |
|---|
| 421 | DO m = 2, nvm |
|---|
| 422 | DO i = 1,nlitt |
|---|
| 423 | pool_start(:,m,icarbon) = pool_start(:,m,icarbon) + & |
|---|
| 424 | ( litter_above(:,i,m,icarbon) ) * veget_max(:,m) |
|---|
| 425 | ENDDO |
|---|
| 426 | ENDDO |
|---|
| 427 | |
|---|
| 428 | DO m = 2, nvm |
|---|
| 429 | DO i = 1, nparts |
|---|
| 430 | pool_start(:,m,icarbon) = pool_start(:,m,icarbon) + & |
|---|
| 431 | (turnover(:,m,i,icarbon) + bm_to_litter(:,m,i,icarbon)) * veget_max(:,m) |
|---|
| 432 | ENDDO |
|---|
| 433 | ENDDO |
|---|
| 434 | ENDIF |
|---|
| 435 | IF ( firstcall ) THEN |
|---|
| 436 | |
|---|
| 437 | !! 1.2.1 litter fractions: |
|---|
| 438 | !! what fraction of leaves, wood, etc. goes into metabolic and structural litterpools |
|---|
| 439 | DO k = 1, nparts |
|---|
| 440 | |
|---|
| 441 | litterfrac(k,imetabolic) = metabolic_ref_frac - metabolic_LN_ratio * LC(k) * CN(k) |
|---|
| 442 | litterfrac(k,istructural) = un - litterfrac(k,imetabolic) |
|---|
| 443 | |
|---|
| 444 | ENDDO |
|---|
| 445 | |
|---|
| 446 | !! 1.2.2 residence times in litter pools (days) |
|---|
| 447 | litter_tau(imetabolic) = tau_metabolic * one_year ! .5 years |
|---|
| 448 | litter_tau(istructural) = tau_struct * one_year ! 3 years |
|---|
| 449 | |
|---|
| 450 | pool_tau(imetabo) = tau_metabolic |
|---|
| 451 | pool_tau(istrabo) = tau_struct |
|---|
| 452 | pool_tau(imetbel) = tau_metabolic |
|---|
| 453 | pool_tau(istrbel) = tau_struct |
|---|
| 454 | pool_tau(iact) = carbon_tau_iactive |
|---|
| 455 | pool_tau(islo) = carbon_tau_islow |
|---|
| 456 | pool_tau(ipas) = carbon_tau_ipassive |
|---|
| 457 | DOC_tau(imetabo) = DOC_tau_labile / one_year |
|---|
| 458 | DOC_tau(istrabo) = DOC_tau_labile / one_year |
|---|
| 459 | DOC_tau(imetbel) = DOC_tau_labile / one_year |
|---|
| 460 | DOC_tau(istrbel) = DOC_tau_labile / one_year |
|---|
| 461 | DOC_tau(iact) = DOC_tau_labile / one_year |
|---|
| 462 | DOC_tau(islo) = DOC_tau_stable / one_year |
|---|
| 463 | DOC_tau(ipas) = DOC_tau_stable / one_year |
|---|
| 464 | |
|---|
| 465 | !! 1.2.3 decomposition flux fraction that goes into soil |
|---|
| 466 | ! (litter -> carbon, above and below) |
|---|
| 467 | ! 1-frac_soil goes into atmosphere |
|---|
| 468 | frac_soil(:,:,:) = zero |
|---|
| 469 | |
|---|
| 470 | ! structural litter: lignin fraction goes into slow pool + respiration, |
|---|
| 471 | ! rest into active pool + respiration |
|---|
| 472 | frac_soil(istructural,iactive,iabove) = frac_soil_struct_aa |
|---|
| 473 | frac_soil(istructural,iactive,ibelow) = frac_soil_struct_ab |
|---|
| 474 | frac_soil(istructural,islow,iabove) = frac_soil_struct_sa |
|---|
| 475 | frac_soil(istructural,islow,ibelow) = frac_soil_struct_sb |
|---|
| 476 | |
|---|
| 477 | ! metabolic litter: all goes into active pool + respiration. |
|---|
| 478 | ! Nothing into slow or passive pool. |
|---|
| 479 | frac_soil(imetabolic,iactive,iabove) = frac_soil_metab_aa |
|---|
| 480 | frac_soil(imetabolic,iactive,ibelow) = frac_soil_metab_ab |
|---|
| 481 | |
|---|
| 482 | |
|---|
| 483 | !! 1.4 messages |
|---|
| 484 | litter_str(imetabolic) = 'metabolic' |
|---|
| 485 | litter_str(istructural) = 'structural' |
|---|
| 486 | |
|---|
| 487 | carbon_str(iactive) = 'active' |
|---|
| 488 | carbon_str(islow) = 'slow' |
|---|
| 489 | carbon_str(ipassive) = 'passive' |
|---|
| 490 | |
|---|
| 491 | level_str(iabove) = 'above' |
|---|
| 492 | level_str(ibelow) = 'below' |
|---|
| 493 | |
|---|
| 494 | part_str(ileaf) = 'leaves' |
|---|
| 495 | part_str(isapabove) = 'sap above ground' |
|---|
| 496 | part_str(isapbelow) = 'sap below ground' |
|---|
| 497 | part_str(iheartabove) = 'heartwood above ground' |
|---|
| 498 | part_str(iheartbelow) = 'heartwood below ground' |
|---|
| 499 | part_str(iroot) = 'roots' |
|---|
| 500 | part_str(ifruit) = 'fruits' |
|---|
| 501 | part_str(icarbres) = 'carbohydrate reserve' |
|---|
| 502 | |
|---|
| 503 | WRITE(numout,*) 'litter:' |
|---|
| 504 | |
|---|
| 505 | WRITE(numout,*) ' > C/N ratios: ' |
|---|
| 506 | DO k = 1, nparts |
|---|
| 507 | WRITE(numout,*) ' ', part_str(k), ': ',CN(k) |
|---|
| 508 | ENDDO |
|---|
| 509 | |
|---|
| 510 | WRITE(numout,*) ' > Lignine/C ratios: ' |
|---|
| 511 | DO k = 1, nparts |
|---|
| 512 | WRITE(numout,*) ' ', part_str(k), ': ',LC(k) |
|---|
| 513 | ENDDO |
|---|
| 514 | |
|---|
| 515 | WRITE(numout,*) ' > fraction of compartment that goes into litter: ' |
|---|
| 516 | DO k = 1, nparts |
|---|
| 517 | DO m = 1, nlitt |
|---|
| 518 | WRITE(numout,*) ' ', part_str(k), '-> ',litter_str(m), ':',litterfrac(k,m) |
|---|
| 519 | ENDDO |
|---|
| 520 | ENDDO |
|---|
| 521 | |
|---|
| 522 | WRITE(numout,*) ' > minimal carbon residence time in litter pools (d):' |
|---|
| 523 | DO m = 1, nlitt |
|---|
| 524 | WRITE(numout,*) ' ',litter_str(m),':',litter_tau(m) |
|---|
| 525 | ENDDO |
|---|
| 526 | |
|---|
| 527 | WRITE(numout,*) ' > litter decomposition flux fraction that really goes ' |
|---|
| 528 | WRITE(numout,*) ' into carbon pools (rest into the atmosphere):' |
|---|
| 529 | DO m = 1, nlitt |
|---|
| 530 | DO l = 1, nlevs |
|---|
| 531 | DO k = 1, ncarb |
|---|
| 532 | WRITE(numout,*) ' ',litter_str(m),' ',level_str(l),' -> ',& |
|---|
| 533 | carbon_str(k),':', frac_soil(m,k,l) |
|---|
| 534 | ENDDO |
|---|
| 535 | ENDDO |
|---|
| 536 | ENDDO |
|---|
| 537 | |
|---|
| 538 | firstcall = .FALSE. |
|---|
| 539 | |
|---|
| 540 | ENDIF |
|---|
| 541 | |
|---|
| 542 | !! 1.3 Initialization |
|---|
| 543 | |
|---|
| 544 | DO k = 1, nparts |
|---|
| 545 | |
|---|
| 546 | litterfrac_pxl(:,k,istructural) = metabolic_ref_frac - metabolic_LN_ratio * LC(k) * CN(k)! * (un + poor_soils(:)) |
|---|
| 547 | litterfrac_pxl(:,k,istructural) = un - litterfrac_pxl(:,k,imetabolic) |
|---|
| 548 | |
|---|
| 549 | ENDDO |
|---|
| 550 | |
|---|
| 551 | litter_above_flux(:,:,:,:) = zero |
|---|
| 552 | litter_flux(:,:,:,:,:) = zero |
|---|
| 553 | litter_flux_old(:,:,:,:,:) = zero |
|---|
| 554 | old_struc_above(:,:) = zero |
|---|
| 555 | old_struc_below(:,:,:) = zero |
|---|
| 556 | litter_pft(:,:,:,:) = zero |
|---|
| 557 | Dif_coef(:) = (Dif/one_year)*dt |
|---|
| 558 | |
|---|
| 559 | |
|---|
| 560 | !! 1.3 litter above the ground per PFT. |
|---|
| 561 | DO j = 2, nvm ! Loop over # PFTs |
|---|
| 562 | DO k = 1, nlitt !Loop over litter pool |
|---|
| 563 | litter_pft(:,j,k,icarbon) = litterpart(:,j,k) * litter_above(:,k,j,icarbon) |
|---|
| 564 | ENDDO |
|---|
| 565 | ENDDO |
|---|
| 566 | |
|---|
| 567 | |
|---|
| 568 | !! 1.4 set output to zero |
|---|
| 569 | deadleaf_cover(:) = zero |
|---|
| 570 | resp_hetero_litter(:,:,:) = zero |
|---|
| 571 | resp_hetero_flood(:,:) = zero |
|---|
| 572 | soilcarbon_input(:,:,:,:,:)= zero |
|---|
| 573 | floodcarbon_input(:,:,:,:)= zero |
|---|
| 574 | !resp_hetero_litter_layer(:,:,:) = zero |
|---|
| 575 | |
|---|
| 576 | !! 2. Add biomass to different litterpools (per m^2 of ground) |
|---|
| 577 | |
|---|
| 578 | !! 2.1 first, save old structural litter (needed for lignin fractions). |
|---|
| 579 | ! above |
|---|
| 580 | DO m = 2,nvm !Loop over PFTs |
|---|
| 581 | |
|---|
| 582 | old_struc_above(:,m) = litter_above(:,istructural,m,icarbon) |
|---|
| 583 | |
|---|
| 584 | ENDDO |
|---|
| 585 | |
|---|
| 586 | !below |
|---|
| 587 | DO l = 1, nbdl !Loop over soil levels (below ground) |
|---|
| 588 | DO m = 2,nvm !Loop over PFTs |
|---|
| 589 | |
|---|
| 590 | old_struc_below(:,m,l) = litter_below(:,istructural,m,l,icarbon) |
|---|
| 591 | |
|---|
| 592 | ENDDO |
|---|
| 593 | ENDDO |
|---|
| 594 | |
|---|
| 595 | !! 2.2 update litter, dead leaves, and lignin content in structural litter |
|---|
| 596 | litter_inc_above(:,:,:,:) = zero |
|---|
| 597 | lignin_struc_inc_above(:,:) = zero |
|---|
| 598 | litter_inc_below(:,:,:,:,:) = zero |
|---|
| 599 | lignin_struc_inc_below(:,:,:) = zero |
|---|
| 600 | litter_inc_PFT_above(:,:,:,:) = zero |
|---|
| 601 | litter_inc_PFT_below(:,:,:,:,:) = zero |
|---|
| 602 | |
|---|
| 603 | |
|---|
| 604 | DO j = 2,nvm !Loop over PFTs |
|---|
| 605 | |
|---|
| 606 | !! 2.2.1 litter |
|---|
| 607 | DO k = 1, nlitt !Loop over litter pools (metabolic and structural) |
|---|
| 608 | |
|---|
| 609 | !! 2.2.2 calculate litter increase (per m^2 of ground). |
|---|
| 610 | ! Only a given fracion of fruit turnover is directly coverted into litter. |
|---|
| 611 | ! Litter increase for each PFT, structural and metabolic, above/below. It must |
|---|
| 612 | ! be noted that the distribution of above ground litter is done within the soil layers |
|---|
| 613 | ! as a proportion of the layer size. But for the below ground layer it follows the root profile |
|---|
| 614 | |
|---|
| 615 | ! For the first litter layer |
|---|
| 616 | litter_inc_PFT_above(:,j,k,icarbon) = & |
|---|
| 617 | litterfrac_pxl(:,ileaf,k) * bm_to_litter(:,j,ileaf,icarbon) + & |
|---|
| 618 | litterfrac_pxl(:,isapabove,k) * bm_to_litter(:,j,isapabove,icarbon) + & |
|---|
| 619 | litterfrac_pxl(:,iheartabove,k) * bm_to_litter(:,j,iheartabove,icarbon) + & |
|---|
| 620 | litterfrac_pxl(:,ifruit,k) * bm_to_litter(:,j,ifruit,icarbon) + & |
|---|
| 621 | litterfrac_pxl(:,icarbres,k) * bm_to_litter(:,j,icarbres,icarbon) + & |
|---|
| 622 | litterfrac_pxl(:,ileaf,k) * turnover(:,j,ileaf,icarbon) + & |
|---|
| 623 | litterfrac_pxl(:,isapabove,k) * turnover(:,j,isapabove,icarbon) + & |
|---|
| 624 | litterfrac_pxl(:,iheartabove,k) * turnover(:,j,iheartabove,icarbon) + & |
|---|
| 625 | litterfrac_pxl(:,ifruit,k) * turnover(:,j,ifruit,icarbon) + & |
|---|
| 626 | litterfrac_pxl(:,icarbres,k) * turnover(:,j,icarbres,icarbon) |
|---|
| 627 | |
|---|
| 628 | ! litter increase, met/struct, above |
|---|
| 629 | litter_inc_above(:,k,j,icarbon) = litter_inc_above(:,k,j,icarbon) + litter_inc_PFT_above(:,j,k,icarbon) |
|---|
| 630 | |
|---|
| 631 | !! The function used for root profile is coming from stomate_npp.f90 |
|---|
| 632 | rpc(:) = un /( ( un - EXP( -z_soil(nbdl) / rprof(:,j) )) ) |
|---|
| 633 | |
|---|
| 634 | DO l = 1, nbdl |
|---|
| 635 | |
|---|
| 636 | litter_inc_PFT_below(:,j,k,l,icarbon) = & |
|---|
| 637 | litterfrac_pxl(:,isapbelow,k) * bm_to_litter(:,j,isapbelow,icarbon) * & |
|---|
| 638 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 639 | litterfrac_pxl(:,iheartbelow,k) * bm_to_litter(:,j,iheartbelow,icarbon) * & |
|---|
| 640 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 641 | litterfrac_pxl(:,iroot,k) * bm_to_litter(:,j,iroot,icarbon) * & |
|---|
| 642 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 643 | litterfrac_pxl(:,isapbelow,k) * turnover(:,j,isapbelow,icarbon) * & |
|---|
| 644 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 645 | litterfrac_pxl(:,iheartbelow,k) * turnover(:,j,iheartbelow,icarbon) * & |
|---|
| 646 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 647 | litterfrac_pxl(:,iroot,k) * turnover(:,j,iroot,icarbon) * & |
|---|
| 648 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) |
|---|
| 649 | |
|---|
| 650 | ! litter increase, met/struct, below |
|---|
| 651 | litter_inc_below(:,k,j,l,icarbon) = litter_inc_below(:,k,j,l,icarbon) + litter_inc_PFT_below(:,j,k,l,icarbon) |
|---|
| 652 | ENDDO |
|---|
| 653 | !! 2.2.3 dead leaves, for soil cover. |
|---|
| 654 | dead_leaves(:,j,k) = & |
|---|
| 655 | dead_leaves(:,j,k) + & |
|---|
| 656 | litterfrac_pxl(:,ileaf,k) * ( bm_to_litter(:,j,ileaf,icarbon) + turnover(:,j,ileaf,icarbon) ) |
|---|
| 657 | |
|---|
| 658 | !! 2.2.4 lignin increase in structural litter |
|---|
| 659 | IF ( k .EQ. istructural ) THEN |
|---|
| 660 | |
|---|
| 661 | lignin_struc_inc_above(:,j) = & |
|---|
| 662 | lignin_struc_inc_above(:,j) + & |
|---|
| 663 | LC(ileaf) * bm_to_litter(:,j,ileaf,icarbon) + & |
|---|
| 664 | LC(isapabove) * bm_to_litter(:,j,isapabove,icarbon) + & |
|---|
| 665 | LC(iheartabove) * bm_to_litter(:,j,iheartabove,icarbon) + & |
|---|
| 666 | LC(ifruit) * bm_to_litter(:,j,ifruit,icarbon) + & |
|---|
| 667 | LC(icarbres) * bm_to_litter(:,j,icarbres,icarbon) + & |
|---|
| 668 | LC(ileaf) * turnover(:,j,ileaf,icarbon) + & |
|---|
| 669 | LC(isapabove) * turnover(:,j,isapabove,icarbon) + & |
|---|
| 670 | LC(iheartabove) * turnover(:,j,iheartabove,icarbon) + & |
|---|
| 671 | LC(ifruit) * turnover(:,j,ifruit,icarbon) + & |
|---|
| 672 | LC(icarbres) * turnover(:,j,icarbres,icarbon) |
|---|
| 673 | |
|---|
| 674 | !! The function used for root profile is coming from stomate_npp.f90 |
|---|
| 675 | DO l = 1, nbdl |
|---|
| 676 | |
|---|
| 677 | lignin_struc_inc_below(:,j,l) = & |
|---|
| 678 | lignin_struc_inc_below(:,j,l) + & |
|---|
| 679 | LC(isapbelow) * bm_to_litter(:,j,isapbelow,icarbon) * & |
|---|
| 680 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 681 | LC(iheartbelow) * bm_to_litter(:,j,iheartbelow,icarbon) * & |
|---|
| 682 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 683 | LC(iroot) * bm_to_litter(:,j,iroot,icarbon) * & |
|---|
| 684 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 685 | LC(isapbelow)*turnover(:,j,isapbelow,icarbon) * & |
|---|
| 686 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 687 | LC(iheartbelow)*turnover(:,j,iheartbelow,icarbon) * & |
|---|
| 688 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) + & |
|---|
| 689 | LC(iroot)*turnover(:,j,iroot,icarbon) * & |
|---|
| 690 | rpc(:) * ( EXP( -z_soil(l-1)/rprof(:,j) ) - EXP( -z_soil(l)/rprof(:,j) ) ) |
|---|
| 691 | ENDDO |
|---|
| 692 | |
|---|
| 693 | ENDIF |
|---|
| 694 | ENDDO |
|---|
| 695 | ENDDO |
|---|
| 696 | |
|---|
| 697 | |
|---|
| 698 | |
|---|
| 699 | !! 2.2.5 add new litter (struct/met, above/below) |
|---|
| 700 | litter_above(:,:,:,:) = litter_above(:,:,:,:) + litter_inc_above(:,:,:,:) |
|---|
| 701 | litter_below(:,:,:,:,:) = litter_below(:,:,:,:,:) + litter_inc_below(:,:,:,:,:) |
|---|
| 702 | |
|---|
| 703 | !! 2.2.6 for security: can't add more lignin than structural litter (above/below) |
|---|
| 704 | DO m = 2,nvm !Lopp over PFTs |
|---|
| 705 | |
|---|
| 706 | lignin_struc_inc_above(:,m) = & |
|---|
| 707 | MIN( lignin_struc_inc_above(:,m), litter_inc_above(:,istructural,m,icarbon) ) |
|---|
| 708 | |
|---|
| 709 | ENDDO |
|---|
| 710 | |
|---|
| 711 | DO l = 1, nbdl !Loop over soil levels (below ground) |
|---|
| 712 | DO m = 2,nvm !Lopp over PFTs |
|---|
| 713 | |
|---|
| 714 | lignin_struc_inc_below(:,m,l) = & |
|---|
| 715 | MIN( lignin_struc_inc_below(:,m,l), litter_inc_below(:,istructural,m,l,icarbon) ) |
|---|
| 716 | |
|---|
| 717 | ENDDO |
|---|
| 718 | ENDDO |
|---|
| 719 | |
|---|
| 720 | !! 2.2.7.1 new lignin content: add old lignin and lignin increase, divide by |
|---|
| 721 | !! total structural litter (above) |
|---|
| 722 | |
|---|
| 723 | DO m = 2,nvm !Loop over PFTs |
|---|
| 724 | WHERE( litter_above(:,istructural,m,icarbon) .GT. min_stomate ) |
|---|
| 725 | |
|---|
| 726 | !MM : Soenke modif |
|---|
| 727 | ! Best vectorization ? |
|---|
| 728 | !!$ lignin_struc(:,:,:) = & |
|---|
| 729 | !!$ ( lignin_struc(:,:,:)*old_struc(:,:,:) + lignin_struc_inc(:,:,:) ) / & |
|---|
| 730 | !!$ litter(:,istructural,:,:,icarbon) |
|---|
| 731 | |
|---|
| 732 | lignin_struc_above(:,m) = lignin_struc_above(:,m) * old_struc_above(:,m) |
|---|
| 733 | lignin_struc_above(:,m) = lignin_struc_above(:,m) + lignin_struc_inc_above(:,m) |
|---|
| 734 | lignin_struc_above(:,m) = lignin_struc_above(:,m) / litter_above(:,istructural,m,icarbon) |
|---|
| 735 | ELSEWHERE |
|---|
| 736 | lignin_struc_above(:,m) = zero |
|---|
| 737 | ENDWHERE |
|---|
| 738 | ENDDO |
|---|
| 739 | |
|---|
| 740 | !! 2.2.7.2 new lignin content: add old lignin and lignin increase, divide by |
|---|
| 741 | !! total structural litter (below) |
|---|
| 742 | DO l = 1, nbdl !Loop over soil levels (below ground) |
|---|
| 743 | DO m = 2,nvm !Loop over PFTs |
|---|
| 744 | WHERE( litter_below(:,istructural,m,l,icarbon) .GT. min_stomate ) |
|---|
| 745 | |
|---|
| 746 | !MM : Soenke modif |
|---|
| 747 | ! Best vectorization ? |
|---|
| 748 | !!$ lignin_struc(:,:,:) = & |
|---|
| 749 | !!$ ( lignin_struc(:,:,:)*old_struc(:,:,:) + lignin_struc_inc(:,:,:)) / & |
|---|
| 750 | !!$ litter(:,istructural,:,:,icarbon) |
|---|
| 751 | |
|---|
| 752 | lignin_struc_below(:,m,l) = lignin_struc_below(:,m,l) * old_struc_below(:,m,l) |
|---|
| 753 | lignin_struc_below(:,m,l) = lignin_struc_below(:,m,l) + lignin_struc_inc_below(:,m,l) |
|---|
| 754 | lignin_struc_below(:,m,l) = lignin_struc_below(:,m,l) /litter_below(:,istructural,m,l,icarbon) |
|---|
| 755 | ELSEWHERE |
|---|
| 756 | lignin_struc_below(:,m,l) = zero |
|---|
| 757 | ENDWHERE |
|---|
| 758 | ENDDO |
|---|
| 759 | ENDDO |
|---|
| 760 | |
|---|
| 761 | |
|---|
| 762 | !! 2.3 new litter fraction per PFT (for structural and metabolic litter, above |
|---|
| 763 | !! the ground). |
|---|
| 764 | DO j = 2,nvm !Loop over PFTs |
|---|
| 765 | DO l =1,nlitt |
|---|
| 766 | WHERE ( litter_above(:,l,j,icarbon) .GT. min_stomate ) |
|---|
| 767 | |
|---|
| 768 | litterpart(:,j,l) = & |
|---|
| 769 | ( litter_pft(:,j,l,icarbon) + litter_inc_PFT_above(:,j,l,icarbon) ) / litter_above(:,l,j,icarbon) |
|---|
| 770 | |
|---|
| 771 | ELSEWHERE |
|---|
| 772 | |
|---|
| 773 | litterpart(:,j,l) = zero |
|---|
| 774 | |
|---|
| 775 | ENDWHERE |
|---|
| 776 | ENDDO |
|---|
| 777 | ENDDO |
|---|
| 778 | !! 3. Temperature control on decay: Factor between 0 and 1 |
|---|
| 779 | |
|---|
| 780 | !! 3.1 above: surface temperature |
|---|
| 781 | DO j=1,nlitt |
|---|
| 782 | control_temp_above(:,j) = control_temp_func (npts, tsurf,litter_tau(j)*(un+poor_soils(:))) |
|---|
| 783 | ENDDO |
|---|
| 784 | !! 3.2 below: convolution of temperature and decomposer profiles |
|---|
| 785 | !! (exponential decomposer profile supposed) |
|---|
| 786 | |
|---|
| 787 | !! 3.2.1 integrate over the nbdl levels |
|---|
| 788 | tsoil_decomp(:) = zero |
|---|
| 789 | |
|---|
| 790 | DO l = 1, nbdl |
|---|
| 791 | DO j = 1,npool |
|---|
| 792 | |
|---|
| 793 | tsoil_decomp(:) = tsoil(:,l) |
|---|
| 794 | |
|---|
| 795 | control_temp_soil(:,l,j) = control_temp_func (npts,tsoil_decomp,pool_tau(j)*(un+poor_soils(:))) |
|---|
| 796 | |
|---|
| 797 | ENDDO |
|---|
| 798 | ENDDO |
|---|
| 799 | |
|---|
| 800 | DO l = 1, nbdl |
|---|
| 801 | DO j = 1,npool |
|---|
| 802 | |
|---|
| 803 | tsoil_decomp(:) = tsoil(:,l) |
|---|
| 804 | |
|---|
| 805 | control_temp_soil(:,l,npool+j) = control_temp_func(npts,tsoil_decomp,DOC_tau(j)*(un+poor_soils(:))) |
|---|
| 806 | |
|---|
| 807 | ENDDO |
|---|
| 808 | ENDDO |
|---|
| 809 | |
|---|
| 810 | !! 4. Moisture control. Factor between 0 and 1 |
|---|
| 811 | |
|---|
| 812 | !! 4.1 above the ground: litter humidity |
|---|
| 813 | |
|---|
| 814 | one_array(:) = un |
|---|
| 815 | soilhum_decomp(:) = zero |
|---|
| 816 | DO m= 1,nvm |
|---|
| 817 | !We used the sum over the 4 first layer as it is done to |
|---|
| 818 | !compute litterhum in hydrol.f90 |
|---|
| 819 | soilhum_decomp(:) =soil_mc(:,1,pref_soil_veg(m))*(z_soil(1)/z_soil(4)) + & |
|---|
| 820 | soil_mc(:,2,pref_soil_veg(m))*((z_soil(2)-z_soil(1))/z_soil(4)) + & |
|---|
| 821 | soil_mc(:,3,pref_soil_veg(m))*((z_soil(3)-z_soil(2))/z_soil(4)) + & |
|---|
| 822 | soil_mc(:,4,pref_soil_veg(m))*((z_soil(4)-z_soil(3))/z_soil(4)) |
|---|
| 823 | ! |
|---|
| 824 | IF (moist_func_Moyano) THEN |
|---|
| 825 | control_moist_above(:,m) = control_moist_func_moyano (npts, soilhum_decomp,bulk_dens, & |
|---|
| 826 | clay, carbon, veget_max) |
|---|
| 827 | ELSE |
|---|
| 828 | control_moist_above(:,m) = control_moist_func (npts, soilhum_decomp) |
|---|
| 829 | ENDIF |
|---|
| 830 | ENDDO |
|---|
| 831 | !! 4.2 below: soil humidity for each soil layers |
|---|
| 832 | |
|---|
| 833 | !! 4.2.1 integrate over the nbdl levels |
|---|
| 834 | soilhum_decomp(:) = zero |
|---|
| 835 | |
|---|
| 836 | DO l = 1, nbdl !Loop over soil levels |
|---|
| 837 | DO m =1,nvm |
|---|
| 838 | soilhum_decomp(:) =soil_mc(:,l,pref_soil_veg(m)) |
|---|
| 839 | IF (moist_func_Moyano) THEN |
|---|
| 840 | control_moist_soil(:,l,m) = control_moist_func_moyano (npts, soilhum_decomp,bulk_dens, & |
|---|
| 841 | clay, carbon, veget_max) |
|---|
| 842 | ELSE |
|---|
| 843 | control_moist_soil(:,l,m) = control_moist_func (npts, soilhum_decomp) |
|---|
| 844 | ENDIF |
|---|
| 845 | ENDDO |
|---|
| 846 | ENDDO |
|---|
| 847 | |
|---|
| 848 | !! 5. fluxes from above ground litter to carbon pools and respiration |
|---|
| 849 | DO m = 2,nvm !Loop over PFTs |
|---|
| 850 | |
|---|
| 851 | !! 5.1 structural litter: goes into active and slow carbon pools + respiration |
|---|
| 852 | |
|---|
| 853 | !! 5.1.1 total quantity of above ground structural litter which is decomposed |
|---|
| 854 | |
|---|
| 855 | WHERE (soil_mc(:,1,pref_soil_veg(m)) .GT. zero) |
|---|
| 856 | fd(:) = dt/(litter_tau(istructural)*(un+poor_soils(:))) * & |
|---|
| 857 | control_temp_above(:,istructural) * control_moist_above(:,m) * exp( -litter_struct_coef * lignin_struc_above(:,m) ) |
|---|
| 858 | ENDWHERE |
|---|
| 859 | DO k = 1,nelements |
|---|
| 860 | qd(:,k) = litter_above(:,istructural,m,k) * fd(:) * (un - flood_frac) |
|---|
| 861 | qd_flood(:,k) = litter_above(:,istructural,m,k) * fd(:) * flood_frac/trois |
|---|
| 862 | ENDDO |
|---|
| 863 | IF (.NOT. lat_exp_doc) THEN |
|---|
| 864 | qd = qd + qd_flood |
|---|
| 865 | qd_flood = zero |
|---|
| 866 | ELSE |
|---|
| 867 | !Do nothing |
|---|
| 868 | ENDIF |
|---|
| 869 | |
|---|
| 870 | !! 5.1.2 decompose same fraction of structural part of dead leaves. Not exact |
|---|
| 871 | !! as lignine content is not the same as that of the total structural litter. |
|---|
| 872 | dead_leaves(:,m,istructural) = dead_leaves(:,m,istructural) * (un - fd(:)*(un - flood_frac(:)) - fd(:)*flood_frac(:)/trois) |
|---|
| 873 | |
|---|
| 874 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 875 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 876 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 877 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 878 | resp_hetero_litter(:,m,iabove) = resp_hetero_litter(:,m,iabove) + & |
|---|
| 879 | ( 1. - frac_soil(istructural,iactive,iabove) ) * qd(:,icarbon) * & |
|---|
| 880 | ( 1. - lignin_struc_above(:,m) ) / dt |
|---|
| 881 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 882 | ( 1. - frac_soil(istructural,iactive,iabove) ) * qd_flood(:,icarbon) * & |
|---|
| 883 | ( 1. - lignin_struc_above(:,m) ) / dt |
|---|
| 884 | |
|---|
| 885 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 886 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 887 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 888 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 889 | resp_hetero_litter(:,m,iabove) = resp_hetero_litter(:,m,iabove) + & |
|---|
| 890 | ( 1. - frac_soil(istructural,islow,iabove) ) * qd(:,icarbon) * lignin_struc_above(:,m) / dt |
|---|
| 891 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 892 | ( 1. - frac_soil(istructural,islow,iabove) ) * qd_flood(:,icarbon) * lignin_struc_above(:,m) / dt |
|---|
| 893 | |
|---|
| 894 | ! resp_hetero_litter_layer(:,m,1) = resp_hetero_litter_layer(:,m,1) + & |
|---|
| 895 | ! ( 1. - frac_soil(istructural,islow,iabove) ) * qd(:,icarbon) *lignin_struc_above(:,m) / dt |
|---|
| 896 | |
|---|
| 897 | !! 5.1.3 Calculation of the soilcarbon_input in gC m^-2 of water |
|---|
| 898 | |
|---|
| 899 | DO k = 1, nelements |
|---|
| 900 | IF (lat_exp_doc) THEN |
|---|
| 901 | soilcarbon_input(:,m,1,istrabo,k) = (frac_soil(istructural,iactive,iabove) * ( 1. - lignin_struc_above(:,m) ) * qd(:,k) + & |
|---|
| 902 | frac_soil(istructural,islow,iabove) * qd(:,k) * lignin_struc_above(:,m) ) /dt |
|---|
| 903 | floodcarbon_input(:,m,iact,k) = frac_soil(istructural,iactive,iabove) * ( 1. - lignin_struc_above(:,m) ) * qd_flood(:,k) / dt |
|---|
| 904 | floodcarbon_input(:,m,islo,k) = frac_soil(istructural,islow,iabove) * qd_flood(:,k) * lignin_struc_above(:,m) /dt |
|---|
| 905 | ELSE |
|---|
| 906 | soilcarbon_input(:,m,1,istrabo,k) = (frac_soil(istructural,iactive,iabove) * & |
|---|
| 907 | ( 1. - lignin_struc_above(:,m)) * (qd(:,k)+qd_flood(:,k)) + & |
|---|
| 908 | frac_soil(istructural,islow,iabove) * (qd(:,k)+qd_flood(:,k)) * lignin_struc_above(:,m)) / dt |
|---|
| 909 | ENDIF |
|---|
| 910 | ENDDO |
|---|
| 911 | |
|---|
| 912 | litter_above(:,istructural,m,:) = litter_above(:,istructural,m,:) - qd(:,:) - qd_flood(:,:) |
|---|
| 913 | |
|---|
| 914 | !! 5.2 above ground metabolic litter goes into active carbon pool + respiration |
|---|
| 915 | |
|---|
| 916 | !! 5.2.1 total quantity of aboveground metabolic litter that is decomposed |
|---|
| 917 | WHERE (soil_mc(:,1,pref_soil_veg(m)) .GT. zero) |
|---|
| 918 | fd(:) = dt/(litter_tau(imetabolic)*(un+poor_soils(:))) * control_temp_above(:,imetabolic) * control_moist_above(:,m) |
|---|
| 919 | ELSEWHERE |
|---|
| 920 | fd(:) = zero |
|---|
| 921 | ENDWHERE |
|---|
| 922 | |
|---|
| 923 | DO k = 1,nelements |
|---|
| 924 | qd(:,k) = litter_above(:,imetabolic,m,k) * fd(:) * (un - flood_frac) |
|---|
| 925 | qd_flood(:,k) = litter_above(:,imetabolic,m,k) * fd(:) * flood_frac/trois |
|---|
| 926 | ENDDO |
|---|
| 927 | ! |
|---|
| 928 | IF (.NOT. lat_exp_doc) THEN |
|---|
| 929 | qd = qd + qd_flood |
|---|
| 930 | qd_flood = zero |
|---|
| 931 | ELSE |
|---|
| 932 | !Do nothing |
|---|
| 933 | ENDIF |
|---|
| 934 | |
|---|
| 935 | !! 5.2.2 decompose same fraction of metabolic part of dead leaves. |
|---|
| 936 | dead_leaves(:,m,imetabolic) = dead_leaves(:,m,imetabolic) * (un - fd(:)*(un - flood_frac(:)) - fd(:)*flood_frac(:)/trois) |
|---|
| 937 | |
|---|
| 938 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 939 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 940 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 941 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 942 | resp_hetero_litter(:,m,iabove) = resp_hetero_litter(:,m,iabove) + & |
|---|
| 943 | ( 1. - frac_soil(imetabolic,iactive,iabove) ) * qd(:,icarbon) / dt |
|---|
| 944 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 945 | ( 1. - frac_soil(imetabolic,iactive,iabove) ) * qd_flood(:,icarbon) / dt |
|---|
| 946 | |
|---|
| 947 | !! 5.2.3 Calculation of the soilcarbon_input in gC m^-2 of water |
|---|
| 948 | ! For above ground litter we assume that the soilcarbon_input coming from AB |
|---|
| 949 | ! litter decomposition is directly incorporated into the 1st soil |
|---|
| 950 | ! layers |
|---|
| 951 | |
|---|
| 952 | DO k = 1, nelements |
|---|
| 953 | IF (lat_exp_doc) THEN |
|---|
| 954 | soilcarbon_input(:,m,1,imetabo,k) = frac_soil(imetabolic,iactive,iabove) * qd(:,k) / dt |
|---|
| 955 | floodcarbon_input(:,m,iact,k) = floodcarbon_input(:,m,iact,k) + frac_soil(imetabolic,iactive,iabove) * qd_flood(:,k) / dt |
|---|
| 956 | ELSE |
|---|
| 957 | soilcarbon_input(:,m,1,imetabo,k) = frac_soil(imetabolic,iactive,iabove) * (qd(:,k) + qd_flood(:,k)) / dt |
|---|
| 958 | ENDIF |
|---|
| 959 | ENDDO |
|---|
| 960 | |
|---|
| 961 | litter_above(:,imetabolic,m,:) = litter_above(:,imetabolic,m,:) - qd(:,:) - qd_flood(:,:) |
|---|
| 962 | |
|---|
| 963 | ENDDO |
|---|
| 964 | |
|---|
| 965 | !! 6. fluxes from below ground litter to carbon pools and respiration |
|---|
| 966 | DO l = 1,nbdl |
|---|
| 967 | DO m = 2,nvm !Loop over PFTs |
|---|
| 968 | |
|---|
| 969 | !! 6.1 structural litter: goes into active and slow carbon pools respiration |
|---|
| 970 | |
|---|
| 971 | !! 6.1.1 total quantity of below ground structural litter which is decomposed |
|---|
| 972 | WHERE (soil_mc(:,l,pref_soil_veg(m)) .GT. zero) |
|---|
| 973 | fd(:) = dt/(litter_tau(istructural)*(un+poor_soils(:))) * & |
|---|
| 974 | control_temp_soil(:,l,istrbel) * control_moist_soil(:,l,m) * exp(-litter_struct_coef * lignin_struc_below(:,m,l) ) |
|---|
| 975 | ELSEWHERE |
|---|
| 976 | fd(:) = zero |
|---|
| 977 | ENDWHERE |
|---|
| 978 | |
|---|
| 979 | DO k = 1,nelements |
|---|
| 980 | qd(:,k) = litter_below(:,istructural,m,l,k) * fd(:) * (un - flood_frac) |
|---|
| 981 | qd_flood(:,k) = litter_below(:,istructural,m,l,k) * fd(:) * flood_frac/trois |
|---|
| 982 | ENDDO |
|---|
| 983 | ! |
|---|
| 984 | IF (.NOT. lat_exp_doc) THEN |
|---|
| 985 | qd = qd + qd_flood |
|---|
| 986 | qd_flood = zero |
|---|
| 987 | ELSE |
|---|
| 988 | !Do nothing |
|---|
| 989 | ENDIF |
|---|
| 990 | |
|---|
| 991 | |
|---|
| 992 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 993 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 994 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 995 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 996 | resp_hetero_litter(:,m,ibelow) = resp_hetero_litter(:,m,ibelow) + & |
|---|
| 997 | ( 1. - frac_soil(istructural,iactive,ibelow) ) * qd(:,icarbon) * & |
|---|
| 998 | ( 1. - lignin_struc_below(:,m,l) ) / dt |
|---|
| 999 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 1000 | ( 1. - frac_soil(istructural,iactive,ibelow) ) * qd_flood(:,icarbon) * & |
|---|
| 1001 | ( 1. - lignin_struc_below(:,m,l) ) / dt |
|---|
| 1002 | |
|---|
| 1003 | |
|---|
| 1004 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 1005 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 1006 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 1007 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 1008 | resp_hetero_litter(:,m,ibelow) = resp_hetero_litter(:,m,ibelow) + & |
|---|
| 1009 | ( 1. - frac_soil(istructural,islow,ibelow) ) * qd(:,icarbon) * lignin_struc_below(:,m,l) / dt |
|---|
| 1010 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 1011 | ( 1. - frac_soil(istructural,islow,ibelow) ) * qd_flood(:,icarbon) * lignin_struc_below(:,m,l) / dt |
|---|
| 1012 | |
|---|
| 1013 | !! 6.1 Calculation of the soilcarbon_input in gC m^-2 |
|---|
| 1014 | |
|---|
| 1015 | DO k = 1, nelements |
|---|
| 1016 | IF ((l .GT. sro_bottom) .OR. (.NOT. lat_exp_doc)) THEN |
|---|
| 1017 | soilcarbon_input(:,m,l,istrbel,k) = (frac_soil(istructural,iactive,ibelow) * ( 1. - lignin_struc_below(:,m,l) ) & |
|---|
| 1018 | * (qd(:,k)+qd_flood(:,k)) + & |
|---|
| 1019 | (frac_soil(istructural,islow,ibelow) * (qd(:,k)+qd_flood(:,k)) * lignin_struc_below(:,m,l) )) / dt |
|---|
| 1020 | ELSE |
|---|
| 1021 | soilcarbon_input(:,m,l,istrbel,k) = (frac_soil(istructural,iactive,ibelow) * ( 1. - lignin_struc_below(:,m,l) ) & |
|---|
| 1022 | * (qd(:,k)) + & |
|---|
| 1023 | (frac_soil(istructural,islow,ibelow) * (qd(:,k)) * lignin_struc_below(:,m,l) )) / dt |
|---|
| 1024 | floodcarbon_input(:,m,iact,k) = floodcarbon_input(:,m,iact,k) + & |
|---|
| 1025 | frac_soil(istructural,iactive,ibelow) * ( 1. - lignin_struc_below(:,m,l) ) * qd_flood(:,k) /dt |
|---|
| 1026 | floodcarbon_input(:,m,islo,k) = floodcarbon_input(:,m,islo,k) + (frac_soil(istructural,islow,ibelow) & |
|---|
| 1027 | * qd_flood(:,k) * lignin_struc_below(:,m,l)) / dt |
|---|
| 1028 | ENDIF |
|---|
| 1029 | ENDDO |
|---|
| 1030 | |
|---|
| 1031 | litter_below(:,istructural,m,l,:) = litter_below(:,istructural,m,l,:) - qd(:,:) - qd_flood(:,:) |
|---|
| 1032 | |
|---|
| 1033 | !! 6.2 below ground metabolic litter goes into active carbon pool + respiration |
|---|
| 1034 | |
|---|
| 1035 | !! 6.2.1 total quantity of belowground metabolic litter that is decomposed |
|---|
| 1036 | WHERE (soil_mc(:,l,pref_soil_veg(m)) .GT. zero) |
|---|
| 1037 | fd(:) = dt/(litter_tau(imetabolic)*(un+poor_soils(:))) * control_temp_soil(:,l,imetbel) * control_moist_soil(:,l,m) |
|---|
| 1038 | ELSEWHERE |
|---|
| 1039 | fd(:) = zero |
|---|
| 1040 | ENDWHERE |
|---|
| 1041 | |
|---|
| 1042 | DO k = 1,nelements |
|---|
| 1043 | qd(:,k) = litter_below(:,imetabolic,m,l,k) * fd(:) * (un-flood_frac(:)) |
|---|
| 1044 | qd_flood(:,k) = litter_below(:,imetabolic,m,l,k) * fd(:) * flood_frac(:)/trois |
|---|
| 1045 | ENDDO |
|---|
| 1046 | ! |
|---|
| 1047 | IF (.NOT. lat_exp_doc) THEN |
|---|
| 1048 | qd = qd + qd_flood |
|---|
| 1049 | qd_flood = zero |
|---|
| 1050 | ELSE |
|---|
| 1051 | !Do nothing |
|---|
| 1052 | ENDIF |
|---|
| 1053 | |
|---|
| 1054 | |
|---|
| 1055 | !BE CAREFUL: Here resp_hetero_litter is divided by dt to have a value which corresponds to |
|---|
| 1056 | ! the sechiba time step but then in stomate.f90 resp_hetero_litter is multiplied by dt. |
|---|
| 1057 | ! Perhaps it could be simplified. Moreover, we must totally adapt the routines to the dtradia/one_day |
|---|
| 1058 | ! time step and avoid some constructions that could create bug during future developments. |
|---|
| 1059 | resp_hetero_litter(:,m,ibelow) = resp_hetero_litter(:,m,ibelow) + & |
|---|
| 1060 | ( 1. - frac_soil(imetabolic,iactive,ibelow) ) * qd(:,icarbon) /dt |
|---|
| 1061 | resp_hetero_flood(:,m) = resp_hetero_flood(:,m) + & |
|---|
| 1062 | ( 1. - frac_soil(imetabolic,iactive,ibelow) ) * qd_flood(:,icarbon) /dt |
|---|
| 1063 | |
|---|
| 1064 | !! 6.2.3 Calculation of the soilcarbon_input in gC m^-2 of water |
|---|
| 1065 | |
|---|
| 1066 | DO k = 1, nelements |
|---|
| 1067 | IF ((l .GT. sro_bottom) .OR. (.NOT. lat_exp_doc)) THEN |
|---|
| 1068 | soilcarbon_input(:,m,l,imetbel,k) = frac_soil(imetabolic,iactive,ibelow) * (qd(:,k)+qd_flood(:,k))/ dt |
|---|
| 1069 | ELSE |
|---|
| 1070 | soilcarbon_input(:,m,l,imetbel,k) = frac_soil(imetabolic,iactive,ibelow) * qd(:,k)/ dt |
|---|
| 1071 | floodcarbon_input(:,m,iact,k) = floodcarbon_input(:,m,iact,k) + frac_soil(imetabolic,iactive,ibelow) * qd_flood(:,k)/ dt |
|---|
| 1072 | ENDIF |
|---|
| 1073 | ENDDO |
|---|
| 1074 | ! |
|---|
| 1075 | litter_below(:,imetabolic,m,l,:) = litter_below(:,imetabolic,m,l,:) - qd(:,:) - qd_flood(:,:) |
|---|
| 1076 | ! |
|---|
| 1077 | ENDDO |
|---|
| 1078 | ENDDO |
|---|
| 1079 | |
|---|
| 1080 | |
|---|
| 1081 | DO m =2,nvm |
|---|
| 1082 | |
|---|
| 1083 | litter_below_old(:,:,m,:,:)=zero |
|---|
| 1084 | litter_below_old_buffer(:,:,m,:,:)=zero |
|---|
| 1085 | litter_below_old(:,:,m,:,:)=litter_below(:,:,m,:,:) |
|---|
| 1086 | litter_above_old(:,:,m,:)=zero |
|---|
| 1087 | litter_above_old(:,:,m,:)=litter_above(:,:,m,:) |
|---|
| 1088 | DO k = 1, nelements ! Loop over elements |
|---|
| 1089 | DO j = 1,nlitt ! Loop over litter pools |
|---|
| 1090 | |
|---|
| 1091 | litter_flux(:,j,m,1,k) = Dif_coef(:)*dt*ABS(litter_below_old(:,j,m,1,k)/(z_soil(1))-litter_below_old(:,j,m,2,k)/(z_soil(2)-z_soil(1)))/(z_soil(2)-z_soil(1)) |
|---|
| 1092 | litter_above_flux(:,j,m,k) = Dif_coef(:)*dt*ABS(litter_above(:,j,m,k)/(z_litter*1e-3)-litter_below(:,j,m,1,k)/(z_litter*1e-3-z_soil(1))) |
|---|
| 1093 | ! BE CAREFUL: Here very important assumption we assume the above ground litter layers to be 10mm thick by default. |
|---|
| 1094 | |
|---|
| 1095 | DO l= 2, nbdl-1 ! Loop over soil layers |
|---|
| 1096 | litter_flux(:,j,m,l,k) = Dif_coef(:)*dt*ABS(litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1))-litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)))/(z_soil(l+1)-z_soil(l)) |
|---|
| 1097 | ENDDO |
|---|
| 1098 | litter_flux_old(:,j,m,:,k) = litter_flux(:,j,m,:,k) |
|---|
| 1099 | litter_above_flux_old(:,j,m,k) = litter_above_flux(:,j,m,k) |
|---|
| 1100 | |
|---|
| 1101 | !Below we checked if in case that, in a given layer, you have diffusion in the above and below litters, both fluxes are not higher than the stocks of the given layer. |
|---|
| 1102 | WHERE (litter_above_old(:,j,m,k)/(z_litter*1e-3) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1103 | litter_below_old(:,j,m,2,k)/(z_soil(2)-z_soil(1)) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1104 | litter_above_flux_old(:,j,m,k)+litter_flux_old(:,j,m,1,k) .GT. litter_below_old(:,j,m,1,k)) |
|---|
| 1105 | litter_above_flux(:,j,m,k) = litter_below_old(:,j,m,1,k)*(litter_above_flux_old(:,j,m,k)/(litter_above_flux_old(:,j,m,k)+litter_flux_old(:,j,m,1,k))) |
|---|
| 1106 | litter_flux(:,j,m,1,k) = litter_below_old(:,j,m,1,k)*(litter_flux_old(:,j,m,1,k)/(litter_above_flux_old(:,j,m,k)+litter_flux_old(:,j,m,1,k))) |
|---|
| 1107 | ELSEWHERE (litter_above_old(:,j,m,k)/(z_litter*1e-3) .GE. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1108 | litter_below_old(:,j,m,2,k)/(z_soil(2)-z_soil(1)) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1109 | litter_below_old(:,j,m,1,k) + litter_above_flux_old(:,j,m,k) - litter_flux_old(:,j,m,1,k) .LE. min_stomate) |
|---|
| 1110 | litter_above_flux(:,j,m,k) = litter_above_flux_old(:,j,m,k) |
|---|
| 1111 | litter_flux(:,j,m,1,k) = litter_below_old(:,j,m,1,k) + litter_above_flux_old(:,j,m,k) |
|---|
| 1112 | ELSEWHERE (litter_above_old(:,j,m,k)/(z_litter*1e-3) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1113 | litter_below_old(:,j,m,2,k)/(z_soil(2)-z_soil(1)) .GE. litter_below_old(:,j,m,1,k)/(z_soil(1)) .AND. & |
|---|
| 1114 | litter_below_old(:,j,m,1,k) - litter_above_flux_old(:,j,m,k) + litter_flux_old(:,j,m,1,k) .LE. min_stomate) |
|---|
| 1115 | litter_above_flux(:,j,m,k) = litter_below_old(:,j,m,1,k) + litter_flux_old(:,j,m,1,k) |
|---|
| 1116 | litter_flux(:,j,m,1,k) = litter_flux_old(:,j,m,1,k) |
|---|
| 1117 | ELSEWHERE |
|---|
| 1118 | litter_above_flux(:,j,m,k) = litter_above_flux_old(:,j,m,k) |
|---|
| 1119 | litter_flux(:,j,m,1,k) = litter_flux_old(:,j,m,1,k) |
|---|
| 1120 | ENDWHERE |
|---|
| 1121 | |
|---|
| 1122 | |
|---|
| 1123 | DO l =1, nbdl-2 |
|---|
| 1124 | WHERE (litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1125 | litter_below_old(:,j,m,l+2,k)/(z_soil(l+2)-z_soil(l+1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1126 | litter_flux_old(:,j,m,l,k)+litter_flux_old(:,j,m,l+1,k) .GT. litter_below_old(:,j,m,l+1,k)) |
|---|
| 1127 | litter_flux(:,j,m,l,k) = litter_below_old(:,j,m,l+1,k)*(litter_flux_old(:,j,m,l,k)/(litter_flux_old(:,j,m,l,k)+litter_flux_old(:,j,m,l+1,k))) |
|---|
| 1128 | litter_flux(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k)*(litter_flux_old(:,j,m,l+1,k)/(litter_flux_old(:,j,m,l,k)+litter_flux_old(:,j,m,l+1,k))) |
|---|
| 1129 | ELSEWHERE (litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .GE. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1130 | litter_below_old(:,j,m,l+2,k)/(z_soil(l+2)-z_soil(l+1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1131 | litter_below_old(:,j,m,l+1,k) + litter_flux_old(:,j,m,l,k) - litter_flux_old(:,j,m,l+1,k) .LE. min_stomate) |
|---|
| 1132 | litter_flux(:,j,m,l,k) = litter_flux_old(:,j,m,l,k) |
|---|
| 1133 | litter_flux(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k) + litter_flux_old(:,j,m,l,k) |
|---|
| 1134 | ELSEWHERE (litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1135 | litter_below_old(:,j,m,l+2,k)/(z_soil(l+2)-z_soil(l+1)) .GE. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l)) .AND. & |
|---|
| 1136 | litter_below_old(:,j,m,l+1,k) - litter_flux_old(:,j,m,l,k) + litter_flux_old(:,j,m,l+1,k) .LE. min_stomate) |
|---|
| 1137 | litter_flux(:,j,m,l,k) = litter_below_old(:,j,m,l+1,k) + litter_flux_old(:,j,m,l+1,k) |
|---|
| 1138 | litter_flux(:,j,m,l+1,k) = litter_flux_old(:,j,m,l+1,k) |
|---|
| 1139 | ELSEWHERE |
|---|
| 1140 | litter_flux(:,j,m,l,k) = litter_flux_old(:,j,m,l,k) |
|---|
| 1141 | litter_flux(:,j,m,l+1,k) = litter_flux_old(:,j,m,l+1,k) |
|---|
| 1142 | ENDWHERE |
|---|
| 1143 | ENDDO |
|---|
| 1144 | |
|---|
| 1145 | WHERE ((litter_above_old(:,j,m,k)/(z_litter*1e-3) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1))) .AND. & |
|---|
| 1146 | ((litter_above_flux(:,j,m,k) - litter_below_old(:,j,m,1,k)) .GE. min_stomate)) |
|---|
| 1147 | litter_above(:,j,m,k) = litter_above_old(:,j,m,k) + litter_below_old(:,j,m,1,k) |
|---|
| 1148 | litter_below_old_buffer(:,j,m,1,k) = -litter_below_old(:,j,m,1,k) |
|---|
| 1149 | litter_below(:,j,m,1,k) = zero |
|---|
| 1150 | ELSEWHERE ((litter_above_old(:,j,m,k)/(z_litter*1e-3) .LT. litter_below_old(:,j,m,1,k)/(z_soil(1))) .AND. & |
|---|
| 1151 | ((litter_below_old(:,j,m,1,k) - litter_above_flux(:,j,m,k)) .GT. min_stomate)) |
|---|
| 1152 | litter_above(:,j,m,k) = litter_above_old(:,j,m,k) + litter_above_flux(:,j,m,k) |
|---|
| 1153 | litter_below_old_buffer(:,j,m,1,k) = - litter_above_flux(:,j,m,k) |
|---|
| 1154 | litter_below(:,j,m,1,k) = litter_below_old(:,j,m,1,k) - litter_above_flux(:,j,m,k) |
|---|
| 1155 | ELSEWHERE ((litter_above_old(:,j,m,k)/(z_litter*1e-3) .GT. litter_below_old(:,j,m,1,k)/(z_soil(1))) .AND. & |
|---|
| 1156 | ((litter_above_flux(:,j,m,k) - litter_above_old(:,j,m,k)) .GE. min_stomate)) |
|---|
| 1157 | litter_above(:,j,m,k) = zero |
|---|
| 1158 | litter_below_old_buffer(:,j,m,1,k) = litter_above_old(:,j,m,k) |
|---|
| 1159 | litter_below(:,j,m,1,k) = litter_below_old(:,j,m,1,k) + litter_above_old(:,j,m,k) |
|---|
| 1160 | ELSEWHERE ((litter_above_old(:,j,m,k)/(z_litter*1e-3) .GT. litter_below_old(:,j,m,1,k)/(z_soil(1))) .AND. & |
|---|
| 1161 | ((litter_above_old(:,j,m,k) - litter_above_flux(:,j,m,k)) .GT. min_stomate)) |
|---|
| 1162 | litter_above(:,j,m,k) = litter_above_old(:,j,m,k) - litter_above_flux(:,j,m,k) |
|---|
| 1163 | litter_below_old_buffer(:,j,m,1,k) = litter_above_flux(:,j,m,k) |
|---|
| 1164 | litter_below(:,j,m,1,k) = litter_below_old(:,j,m,1,k) + litter_above_flux(:,j,m,k) |
|---|
| 1165 | ELSEWHERE |
|---|
| 1166 | litter_above(:,j,m,k) = litter_above_old(:,j,m,k) |
|---|
| 1167 | litter_below(:,j,m,1,k) = litter_below_old(:,j,m,1,k) |
|---|
| 1168 | ENDWHERE |
|---|
| 1169 | |
|---|
| 1170 | DO l= 1, nbdl-1 ! Loop over soil layers |
|---|
| 1171 | WHERE ((litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l))) .AND. & |
|---|
| 1172 | ((litter_flux(:,j,m,l,k) - litter_below_old(:,j,m,l+1,k)) .GE. min_stomate)) |
|---|
| 1173 | litter_below(:,j,m,l,k) = litter_below_old(:,j,m,l,k) + litter_below_old(:,j,m,l+1,k) + litter_below_old_buffer(:,j,m,l,k) |
|---|
| 1174 | litter_below_old_buffer(:,j,m,l+1,k) = -litter_below_old(:,j,m,l+1,k) |
|---|
| 1175 | litter_below(:,j,m,l+1,k) = zero |
|---|
| 1176 | ELSEWHERE ((litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .LT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l))) .AND. & |
|---|
| 1177 | ((litter_below_old(:,j,m,l+1,k) - litter_flux(:,j,m,l,k)) .GT. min_stomate)) |
|---|
| 1178 | litter_below(:,j,m,l,k) = litter_below_old(:,j,m,l,k) + litter_flux(:,j,m,l,k) + litter_below_old_buffer(:,j,m,l,k) |
|---|
| 1179 | litter_below_old_buffer(:,j,m,l+1,k) = - litter_flux(:,j,m,l,k) |
|---|
| 1180 | litter_below(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k) - litter_flux(:,j,m,l,k) |
|---|
| 1181 | ELSEWHERE ((litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .GT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l))) .AND. & |
|---|
| 1182 | ((litter_flux(:,j,m,l,k) - litter_below_old(:,j,m,l,k)) .GE. min_stomate)) |
|---|
| 1183 | litter_below(:,j,m,l,k) = zero + litter_below_old_buffer(:,j,m,l,k) |
|---|
| 1184 | litter_below_old_buffer(:,j,m,l+1,k) = litter_below_old(:,j,m,l,k) |
|---|
| 1185 | litter_below(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k) + litter_below_old(:,j,m,l,k) |
|---|
| 1186 | ELSEWHERE ((litter_below_old(:,j,m,l,k)/(z_soil(l)-z_soil(l-1)) .GT. litter_below_old(:,j,m,l+1,k)/(z_soil(l+1)-z_soil(l))) .AND. & |
|---|
| 1187 | ((litter_below_old(:,j,m,l,k) - litter_flux(:,j,m,l,k)) .GT. min_stomate)) |
|---|
| 1188 | litter_below(:,j,m,l,k) = litter_below_old(:,j,m,l,k) - litter_flux(:,j,m,l,k) + litter_below_old_buffer(:,j,m,l,k) |
|---|
| 1189 | litter_below_old_buffer(:,j,m,l+1,k) = litter_flux(:,j,m,l,k) |
|---|
| 1190 | litter_below(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k) + litter_flux(:,j,m,l,k) |
|---|
| 1191 | ELSEWHERE |
|---|
| 1192 | litter_below(:,j,m,l,k) = litter_below_old(:,j,m,l,k) |
|---|
| 1193 | litter_below(:,j,m,l+1,k) = litter_below_old(:,j,m,l+1,k) |
|---|
| 1194 | ENDWHERE |
|---|
| 1195 | ENDDO ! End loop over soil layers |
|---|
| 1196 | ENDDO ! End loop over litter pools |
|---|
| 1197 | ENDDO ! End loop over elements |
|---|
| 1198 | ENDDO ! End loop over PFT |
|---|
| 1199 | |
|---|
| 1200 | !! 8. calculate fraction of total soil covered by dead leaves |
|---|
| 1201 | |
|---|
| 1202 | CALL deadleaf (npts, veget_max, dead_leaves, deadleaf_cover) |
|---|
| 1203 | |
|---|
| 1204 | !! 9. Check mass balance closure |
|---|
| 1205 | |
|---|
| 1206 | !! 9.1 Calculate components of the mass balance |
|---|
| 1207 | pool_end_after(:,:,:) = zero |
|---|
| 1208 | pool_end(:,:,:) = zero |
|---|
| 1209 | IF (ld_doc) THEN |
|---|
| 1210 | DO m = 2, nvm |
|---|
| 1211 | DO i = 1,nlitt |
|---|
| 1212 | DO l = 1, nbdl |
|---|
| 1213 | pool_end(:,m,icarbon) = pool_end(:,m,icarbon) + & |
|---|
| 1214 | ( litter_below(:,i,m,l,icarbon) ) * veget_max(:,m) |
|---|
| 1215 | ENDDO |
|---|
| 1216 | ENDDO |
|---|
| 1217 | ENDDO |
|---|
| 1218 | |
|---|
| 1219 | DO m = 2, nvm |
|---|
| 1220 | DO i = 1,nlitt |
|---|
| 1221 | pool_end(:,m,icarbon) = pool_end(:,m,icarbon) + & |
|---|
| 1222 | ( litter_above(:,i,m,icarbon) ) * veget_max(:,m) |
|---|
| 1223 | ENDDO |
|---|
| 1224 | ENDDO |
|---|
| 1225 | |
|---|
| 1226 | |
|---|
| 1227 | !! 9.2 Calculate mass balance |
|---|
| 1228 | ! Note that soilcarbon is transfered to other pools but that the pool |
|---|
| 1229 | ! was not updated. We should not account for it in ::pool_end |
|---|
| 1230 | |
|---|
| 1231 | check_intern(:,:,:,:) = zero |
|---|
| 1232 | check_intern(:,:,iatm2land,icarbon) = zero |
|---|
| 1233 | |
|---|
| 1234 | |
|---|
| 1235 | check_intern(:,:,iland2atm,icarbon) = -un * (resp_hetero_litter(:,:,iabove)+resp_hetero_litter(:,:,ibelow)+resp_hetero_flood(:,:)) * & |
|---|
| 1236 | veget_max(:,:) * dt |
|---|
| 1237 | |
|---|
| 1238 | |
|---|
| 1239 | DO m = 1,nvm |
|---|
| 1240 | DO l = 1, nbdl |
|---|
| 1241 | check_intern(:,m,ilat2out,icarbon) = check_intern(:,m,ilat2out,icarbon) -un * & |
|---|
| 1242 | (soilcarbon_input(:,m,l,imetbel,icarbon)+soilcarbon_input(:,m,l,istrbel,icarbon)) * & |
|---|
| 1243 | veget_max(:,m) * dt |
|---|
| 1244 | ENDDO |
|---|
| 1245 | ENDDO |
|---|
| 1246 | DO m = 1,nvm |
|---|
| 1247 | check_intern(:,m,ilat2out,icarbon) = check_intern(:,m,ilat2out,icarbon) -un * & |
|---|
| 1248 | (soilcarbon_input(:,m,1,imetabo,icarbon)+soilcarbon_input(:,m,1,istrabo,icarbon) & |
|---|
| 1249 | +floodcarbon_input(:,m,iact,icarbon)+floodcarbon_input(:,m,islo,icarbon)) * & |
|---|
| 1250 | veget_max(:,m) * dt |
|---|
| 1251 | ENDDO |
|---|
| 1252 | |
|---|
| 1253 | check_intern(:,:,ilat2in,icarbon) = zero |
|---|
| 1254 | |
|---|
| 1255 | check_intern(:,:,ipoolchange,icarbon) = -un * (pool_end(:,:,icarbon) - & |
|---|
| 1256 | pool_start(:,:,icarbon)) |
|---|
| 1257 | |
|---|
| 1258 | closure_intern = zero |
|---|
| 1259 | DO i = 1,nmbcomp |
|---|
| 1260 | closure_intern(:,:,icarbon) = closure_intern(:,:,icarbon) + & |
|---|
| 1261 | check_intern(:,:,i,icarbon) |
|---|
| 1262 | ENDDO |
|---|
| 1263 | |
|---|
| 1264 | !! 9.3 Write verdict |
|---|
| 1265 | |
|---|
| 1266 | IF (SUM(SUM(closure_intern(:,:,icarbon),2),1) .LT. min_stomate .AND. & |
|---|
| 1267 | SUM(SUM(closure_intern(:,:,icarbon),2),1) .GT. -min_stomate) THEN |
|---|
| 1268 | WRITE(numout,*) 'Mass balance closure in stomate_litter.f90' |
|---|
| 1269 | ELSE |
|---|
| 1270 | WRITE(numout,*) 'Error: mass balance is not closed in stomate_litter.f90' |
|---|
| 1271 | WRITE(numout,*) ' Difference is, ', SUM(SUM(closure_intern(:,:,icarbon),2),1) |
|---|
| 1272 | WRITE(numout,*) ' Difference is, ', closure_intern(:,:,icarbon) |
|---|
| 1273 | ENDIF |
|---|
| 1274 | ENDIF |
|---|
| 1275 | |
|---|
| 1276 | |
|---|
| 1277 | IF (printlev>=4) WRITE(numout,*) 'Leaving littercalc' |
|---|
| 1278 | |
|---|
| 1279 | END SUBROUTINE littercalc |
|---|
| 1280 | |
|---|
| 1281 | |
|---|
| 1282 | !! ==============================================================================================================================\n |
|---|
| 1283 | !! SUBROUTINE : deadleaf |
|---|
| 1284 | !! |
|---|
| 1285 | !>\BRIEF This routine calculates the deadleafcover. |
|---|
| 1286 | !! |
|---|
| 1287 | !! DESCRIPTION : It first calculates the lai corresponding to the dead leaves (LAI) using |
|---|
| 1288 | !! the dead leaves carbon content (DL) the specific leaf area (sla) and the |
|---|
| 1289 | !! maximal coverage fraction of a PFT (vegetmax) using the following equations: |
|---|
| 1290 | !! \latexonly |
|---|
| 1291 | !! \input{deadleaf1.tex} |
|---|
| 1292 | !! \endlatexonly |
|---|
| 1293 | !! \n |
|---|
| 1294 | !! Then, the dead leaf cover (DLC) is calculated as following:\n |
|---|
| 1295 | !! \latexonly |
|---|
| 1296 | !! \input{deadleaf2.tex} |
|---|
| 1297 | !! \endlatexonly |
|---|
| 1298 | !! \n |
|---|
| 1299 | !! |
|---|
| 1300 | !! RECENT CHANGE(S) : None |
|---|
| 1301 | !! |
|---|
| 1302 | !! MAIN OUTPUT VARIABLE: ::deadleaf_cover |
|---|
| 1303 | !! |
|---|
| 1304 | !! REFERENCE(S) : None |
|---|
| 1305 | !! |
|---|
| 1306 | !! FLOWCHART : None |
|---|
| 1307 | !! \n |
|---|
| 1308 | !_ ================================================================================================================================ |
|---|
| 1309 | |
|---|
| 1310 | SUBROUTINE deadleaf (npts, veget_max, dead_leaves, deadleaf_cover) |
|---|
| 1311 | |
|---|
| 1312 | !! 0. Variable and parameter declaration |
|---|
| 1313 | |
|---|
| 1314 | !! 0.1 Input variables |
|---|
| 1315 | |
|---|
| 1316 | INTEGER(i_std), INTENT(in) :: npts !! Domain size - number of grid pixels (unitless) |
|---|
| 1317 | REAL(r_std), DIMENSION(npts,nvm,nlitt), INTENT(in) :: dead_leaves !! Dead leaves per ground unit area, per PFT, |
|---|
| 1318 | !! metabolic and structural |
|---|
| 1319 | !! @tex $(gC m^{-2})$ @endtex |
|---|
| 1320 | REAL(r_std),DIMENSION(npts,nvm),INTENT(in) :: veget_max !! PFT "Maximal" coverage fraction of a PFT defined in |
|---|
| 1321 | !! the input vegetation map |
|---|
| 1322 | !! @tex $(m^2 m^{-2})$ @endtex |
|---|
| 1323 | |
|---|
| 1324 | !! 0.2 Output variables |
|---|
| 1325 | |
|---|
| 1326 | REAL(r_std), DIMENSION(npts), INTENT(out) :: deadleaf_cover !! Fraction of soil covered by dead leaves over all PFTs |
|---|
| 1327 | !! (0-1, unitless) |
|---|
| 1328 | |
|---|
| 1329 | !! 0.3 Modified variables |
|---|
| 1330 | |
|---|
| 1331 | !! 0.4 Local variables |
|---|
| 1332 | |
|---|
| 1333 | REAL(r_std), DIMENSION(npts) :: dead_lai !! LAI of dead leaves @tex $(m^2 m^{-2})$ @endtex |
|---|
| 1334 | INTEGER(i_std) :: j !! Index (unitless) |
|---|
| 1335 | !_ ================================================================================================================================ |
|---|
| 1336 | |
|---|
| 1337 | !! 1. LAI of dead leaves |
|---|
| 1338 | |
|---|
| 1339 | dead_lai(:) = zero |
|---|
| 1340 | |
|---|
| 1341 | DO j = 2,nvm !Loop over PFTs |
|---|
| 1342 | dead_lai(:) = dead_lai(:) + ( dead_leaves(:,j,imetabolic) + dead_leaves(:,j,istructural) ) * sla(j) & |
|---|
| 1343 | * veget_max(:,j) |
|---|
| 1344 | ENDDO |
|---|
| 1345 | |
|---|
| 1346 | !! 2. fraction of soil covered by dead leaves |
|---|
| 1347 | |
|---|
| 1348 | deadleaf_cover(:) = un - exp( - 0.5 * dead_lai(:) ) |
|---|
| 1349 | |
|---|
| 1350 | IF (printlev>=4) WRITE(numout,*) 'Leaving deadleaf' |
|---|
| 1351 | |
|---|
| 1352 | END SUBROUTINE deadleaf |
|---|
| 1353 | |
|---|
| 1354 | |
|---|
| 1355 | !! ================================================================================================================================ |
|---|
| 1356 | !! FUNCTION : control_moist_func_moyano |
|---|
| 1357 | !! |
|---|
| 1358 | !>\BRIEF Calculate moisture control for litter and soild C decomposition |
|---|
| 1359 | !! |
|---|
| 1360 | !! DESCRIPTION : Calculate moisture control factor applied |
|---|
| 1361 | !! to litter decomposition and to soil carbon decomposition in |
|---|
| 1362 | !! stomate_soilcarbon.f90 using the following equation: \n |
|---|
| 1363 | !! \latexonly |
|---|
| 1364 | !! \input{control_moist_func1.tex} |
|---|
| 1365 | !! \endlatexonly |
|---|
| 1366 | !! \n |
|---|
| 1367 | !! with M the moisture control factor and soilmoisutre, the soil moisture |
|---|
| 1368 | !! calculated in sechiba. |
|---|
| 1369 | !! Then, the function is ranged between 0.25 and 1:\n |
|---|
| 1370 | !! \latexonly |
|---|
| 1371 | !! \input{control_moist_func2.tex} |
|---|
| 1372 | !! \endlatexonly |
|---|
| 1373 | !! \n |
|---|
| 1374 | !! RECENT CHANGE(S) : None |
|---|
| 1375 | !! |
|---|
| 1376 | !! RETURN VALUE : ::moistfunc_result |
|---|
| 1377 | !! |
|---|
| 1378 | !! REFERENCE(S) : None |
|---|
| 1379 | !! |
|---|
| 1380 | !! FLOWCHART : None |
|---|
| 1381 | !! \n |
|---|
| 1382 | !_ ================================================================================================================================ |
|---|
| 1383 | |
|---|
| 1384 | FUNCTION control_moist_func_moyano (npts, moist_in,bulk_dens, clay, carbon,veget_max) RESULT (moistfunc_result) |
|---|
| 1385 | |
|---|
| 1386 | !! 0. Variable and parameter declaration |
|---|
| 1387 | |
|---|
| 1388 | !! 0.1 Input variables |
|---|
| 1389 | |
|---|
| 1390 | INTEGER(i_std), INTENT(in) :: npts !! Domain size - number of grid pixel (unitless) |
|---|
| 1391 | REAL(r_std), DIMENSION(npts), INTENT(in) :: moist_in !! relative humidity (unitless) |
|---|
| 1392 | REAL(r_std), DIMENSION(npts), INTENT(in) :: clay !! Clay fraction (unitless, 0-1) |
|---|
| 1393 | REAL(r_std), DIMENSION(npts), INTENT(in) :: bulk_dens !! Variable local of bulk density for the moment must change in the futur (kg m-3) |
|---|
| 1394 | REAL(r_std), DIMENSION(npts,ncarb,nvm,nbdl), INTENT(in) :: carbon !! Soil carbon pools: active, slow, or passive, \f$(gC m^{2})$\f |
|---|
| 1395 | REAL(r_std),DIMENSION(npts,nvm),INTENT(in) :: veget_max !! Maximum fraction of vegetation type including |
|---|
| 1396 | !! non-biological fraction (unitless) |
|---|
| 1397 | |
|---|
| 1398 | !! 0.2 Output variables |
|---|
| 1399 | |
|---|
| 1400 | REAL(r_std), DIMENSION(npts) :: moistfunc_result !! Moisture control factor (0-1, unitless) |
|---|
| 1401 | |
|---|
| 1402 | !! 0.3 Modified variables |
|---|
| 1403 | |
|---|
| 1404 | !! 0.4 Local variables |
|---|
| 1405 | REAL(r_std), DIMENSION(npts) :: total_soc !! Total soil organic carbon for a grid pixel (g-C g-1 soil) |
|---|
| 1406 | INTEGER(i_std) :: k,i,j !! Indices |
|---|
| 1407 | INTEGER, PARAMETER :: nummoist = 120 !! We used numoist then divived by 100. because to calculate the function |
|---|
| 1408 | !! we need to predict PRsr for all the possible soil moisture values |
|---|
| 1409 | REAL(r_std), DIMENSION(npts,nummoist) :: PRsr !! Proportional response or soil respiration at moist_in |
|---|
| 1410 | REAL(r_std), DIMENSION(npts,nummoist) :: SR !! Soil respiration at moist_in to facilitate the understanding regarding |
|---|
| 1411 | !! the Moyano et al paper we keep the same nomenclature than in the paper |
|---|
| 1412 | !! but **BE CAREFUL** it does not correspond to the variable resp_hetero_soil |
|---|
| 1413 | !! or resp_hetero_litter in ORCHIDEE |
|---|
| 1414 | REAL(r_std), DIMENSION(0:nbdl) :: z_soil !! Soil levels (m) |
|---|
| 1415 | !$OMP THREADPRIVATE(z_soil) |
|---|
| 1416 | REAL(r_std), DIMENSION(npts,nummoist) :: moistfunc !! An intermediate variable to calculate the Moisture control factor |
|---|
| 1417 | INTEGER(i_std) :: ind !! A local variable to know what is the index of the max value for the statistical function |
|---|
| 1418 | INTEGER(i_std), DIMENSION(npts) :: ind_i !! A local variable to know what is the index of the max value for the |
|---|
| 1419 | !! statistical function at each points |
|---|
| 1420 | REAL(r_std),ALLOCATABLE,SAVE,DIMENSION(:,:) :: moistfunc_below_1 !! A allocatable variable to store the value of moistfunc that are below the max value |
|---|
| 1421 | !! to then rescale at is it done in Moyano et al. 2012 BG |
|---|
| 1422 | !$OMP THREADPRIVATE(moistfunc_below_1) |
|---|
| 1423 | INTEGER(i_std) :: ier !! Check errors in netcdf call (unitless) |
|---|
| 1424 | LOGICAL :: l_error !! Check errors in netcdf call |
|---|
| 1425 | |
|---|
| 1426 | !_ ================================================================================================================================ |
|---|
| 1427 | |
|---|
| 1428 | !! 1.3 soil levels |
|---|
| 1429 | z_soil(0) = zero |
|---|
| 1430 | z_soil(1:nbdl) = diaglev(1:nbdl) |
|---|
| 1431 | |
|---|
| 1432 | ! In Moyano et al. 2012 BG, the function obtained is based on soil |
|---|
| 1433 | ! incubations were litter is generally manually removed, therefore we used |
|---|
| 1434 | ! only the variable carbon corresponding to the soil organic carbon even |
|---|
| 1435 | ! if some litter (metabolic litter) is not easy to remove manually since it |
|---|
| 1436 | ! corresponds to roots exudates. Therefore, we probably underestimate a bit |
|---|
| 1437 | ! the soil organic carbon compared to what is used in Moyano et al., 2012 |
|---|
| 1438 | ! BG. |
|---|
| 1439 | |
|---|
| 1440 | PRsr(:,:) = zero |
|---|
| 1441 | SR(:,:) = zero |
|---|
| 1442 | moistfunc(:,:) = zero |
|---|
| 1443 | l_error = .FALSE. |
|---|
| 1444 | |
|---|
| 1445 | total_soc(:) = zero |
|---|
| 1446 | DO k = 1,nvm |
|---|
| 1447 | DO j = 1,nbdl |
|---|
| 1448 | total_soc(:) = total_soc(:) + & |
|---|
| 1449 | ((carbon(:,iactive,k,j)*veget_max(:,k) + & |
|---|
| 1450 | carbon(:,islow,k,j)*veget_max(:,k) + & |
|---|
| 1451 | carbon(:,ipassive,k,j)*veget_max(:,k))* & |
|---|
| 1452 | ((z_soil(j)-z_soil(j-1))/z_soil(nbdl))) / & |
|---|
| 1453 | (bulk_dens(:) ) |
|---|
| 1454 | ENDDO |
|---|
| 1455 | ENDDO |
|---|
| 1456 | |
|---|
| 1457 | DO k = 1,nummoist |
|---|
| 1458 | |
|---|
| 1459 | PRsr(:,k) = 1.11066-0.83344*(k/100.) + 1.48095*((k/100.)**2) - 1.02959*((k/100.)**3) + 0.07995*clay(:) + 1.27892*total_soc(:) |
|---|
| 1460 | |
|---|
| 1461 | ENDDO |
|---|
| 1462 | |
|---|
| 1463 | SR(:,1)=PRsr(:,1) |
|---|
| 1464 | DO k=2,nummoist |
|---|
| 1465 | SR(:,k)= SR(:,k-1)* PRsr(:,k) |
|---|
| 1466 | ENDDO |
|---|
| 1467 | |
|---|
| 1468 | DO i = 1,npts |
|---|
| 1469 | DO k= 1, nummoist |
|---|
| 1470 | moistfunc(i,k) = SR(i,k)/MAXVAL(SR(i,:)) |
|---|
| 1471 | ENDDO |
|---|
| 1472 | ENDDO |
|---|
| 1473 | |
|---|
| 1474 | ind_i(:) = MAXLOC(moistfunc(:,:),DIM=2) |
|---|
| 1475 | |
|---|
| 1476 | DO i = 1,npts |
|---|
| 1477 | ind=ind_i(i) |
|---|
| 1478 | |
|---|
| 1479 | ALLOCATE(moistfunc_below_1(npts,ind),stat=ier) |
|---|
| 1480 | l_error = l_error .OR. (ier /= 0) |
|---|
| 1481 | IF (l_error) THEN |
|---|
| 1482 | WRITE(numout,*) 'Memory allocation error for moistfunc_below_1. ' |
|---|
| 1483 | ENDIF |
|---|
| 1484 | |
|---|
| 1485 | DO k= 1,ind |
|---|
| 1486 | moistfunc_below_1(i,k)= moistfunc(i,k) |
|---|
| 1487 | ENDDO |
|---|
| 1488 | |
|---|
| 1489 | DO k= 1,ind |
|---|
| 1490 | moistfunc(i,k)=moistfunc(i,k) - MINVAL(moistfunc_below_1(i,:)) |
|---|
| 1491 | ENDDO |
|---|
| 1492 | |
|---|
| 1493 | DO k= 1,ind |
|---|
| 1494 | moistfunc_below_1(i,k)= moistfunc(i,k) |
|---|
| 1495 | ENDDO |
|---|
| 1496 | |
|---|
| 1497 | DO k=1,ind |
|---|
| 1498 | moistfunc(i,k)=moistfunc(i,k)/MAXVAL(moistfunc_below_1(i,:)) |
|---|
| 1499 | ENDDO |
|---|
| 1500 | |
|---|
| 1501 | IF (ALLOCATED(moistfunc_below_1)) DEALLOCATE(moistfunc_below_1) |
|---|
| 1502 | |
|---|
| 1503 | ENDDO |
|---|
| 1504 | DO i=1,npts |
|---|
| 1505 | IF (NINT(moist_in(i)*100.) .GT. zero) THEN |
|---|
| 1506 | moistfunc_result(i) = moistfunc(i,NINT(moist_in(i)*100.)) |
|---|
| 1507 | ELSE |
|---|
| 1508 | moistfunc_result(i) = zero |
|---|
| 1509 | ENDIF |
|---|
| 1510 | ENDDO |
|---|
| 1511 | |
|---|
| 1512 | END FUNCTION control_moist_func_moyano |
|---|
| 1513 | |
|---|
| 1514 | !! ================================================================================================================================ |
|---|
| 1515 | !! FUNCTION : control_moist_func |
|---|
| 1516 | !! |
|---|
| 1517 | !>\BRIEF Calculate moisture control for litter and soild C decomposition |
|---|
| 1518 | !! |
|---|
| 1519 | !! DESCRIPTION : Calculate moisture control factor applied |
|---|
| 1520 | !! to litter decomposition and to soil carbon decomposition in |
|---|
| 1521 | !! stomate_soilcarbon.f90 using the following equation: \n |
|---|
| 1522 | !! \latexonly |
|---|
| 1523 | !! \input{control_moist_func1.tex} |
|---|
| 1524 | !! \endlatexonly |
|---|
| 1525 | !! \n |
|---|
| 1526 | !! with M the moisture control factor and soilmoisutre, the soil moisture |
|---|
| 1527 | !! calculated in sechiba. |
|---|
| 1528 | !! Then, the function is ranged between 0.25 and 1:\n |
|---|
| 1529 | !! \latexonly |
|---|
| 1530 | !! \input{control_moist_func2.tex} |
|---|
| 1531 | !! \endlatexonly |
|---|
| 1532 | !! \n |
|---|
| 1533 | !! RECENT CHANGE(S) : None |
|---|
| 1534 | !! |
|---|
| 1535 | !! RETURN VALUE : ::moistfunc_result |
|---|
| 1536 | !! |
|---|
| 1537 | !! REFERENCE(S) : None |
|---|
| 1538 | !! |
|---|
| 1539 | !! FLOWCHART : None |
|---|
| 1540 | !! \n |
|---|
| 1541 | !_ ================================================================================================================================ |
|---|
| 1542 | |
|---|
| 1543 | FUNCTION control_moist_func (npts, moist_in) RESULT (moistfunc_result) |
|---|
| 1544 | |
|---|
| 1545 | !! 0. Variable and parameter declaration |
|---|
| 1546 | |
|---|
| 1547 | !! 0.1 Input variables |
|---|
| 1548 | |
|---|
| 1549 | INTEGER(i_std), INTENT(in) :: npts !! Domain size - number of grid pixel (unitless) |
|---|
| 1550 | REAL(r_std), DIMENSION(npts), INTENT(in) :: moist_in !! relative humidity (unitless) |
|---|
| 1551 | |
|---|
| 1552 | |
|---|
| 1553 | !! 0.2 Output variables |
|---|
| 1554 | |
|---|
| 1555 | REAL(r_std), DIMENSION(npts) :: moistfunc_result !! Moisture control factor (0-1, unitless) |
|---|
| 1556 | |
|---|
| 1557 | !! 0.3 Modified variables |
|---|
| 1558 | |
|---|
| 1559 | |
|---|
| 1560 | !_ ================================================================================================================================ |
|---|
| 1561 | |
|---|
| 1562 | |
|---|
| 1563 | moistfunc_result(:) = -moist_coeff(1) * moist_in(:) * moist_in(:) + moist_coeff(2)* moist_in(:) - moist_coeff(3) |
|---|
| 1564 | moistfunc_result(:) = MAX( 0.25_r_std, MIN( un, moistfunc_result(:) ) ) |
|---|
| 1565 | |
|---|
| 1566 | END FUNCTION control_moist_func |
|---|
| 1567 | |
|---|
| 1568 | !! ================================================================================================================================ |
|---|
| 1569 | !! FUNCTION : control_temp_func |
|---|
| 1570 | !! |
|---|
| 1571 | !>\BRIEF Calculate temperature control for litter and soild C decomposition |
|---|
| 1572 | !! |
|---|
| 1573 | !! DESCRIPTION : Calculate temperature control factor applied |
|---|
| 1574 | !! to litter decomposition and to soil carbon decomposition in |
|---|
| 1575 | !! stomate_soilcarbon.f90 using the following equation: \n |
|---|
| 1576 | !! \latexonly |
|---|
| 1577 | !! \input{control_temp_func1.tex} |
|---|
| 1578 | !! \endlatexonly |
|---|
| 1579 | !! \n |
|---|
| 1580 | !! with T the temperature control factor, temp the temperature in Kelvin of |
|---|
| 1581 | !! the air (for aboveground litter) or of the soil (for belowground litter |
|---|
| 1582 | !! and soil) |
|---|
| 1583 | !! Then, the function is limited in its maximal range to 1:\n |
|---|
| 1584 | !! \latexonly |
|---|
| 1585 | !! \input{control_temp_func2.tex} |
|---|
| 1586 | !! \endlatexonly |
|---|
| 1587 | !! \n |
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| 1588 | !! RECENT CHANGE(S) : None |
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| 1589 | !! |
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| 1590 | !! RETURN VALUE: ::tempfunc_result |
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| 1591 | !! |
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| 1592 | !! REFERENCE(S) : None |
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| 1593 | !! |
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| 1594 | !! FLOWCHART : None |
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| 1595 | !! \n |
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| 1596 | !_ ================================================================================================================================ |
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| 1597 | |
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| 1598 | FUNCTION control_temp_func (npts, temp_in,tau) RESULT (tempfunc_result) |
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| 1599 | |
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| 1600 | !! 0. Variable and parameter declaration |
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| 1601 | |
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| 1602 | !! 0.1 Input variables |
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| 1603 | INTEGER(i_std), INTENT(in) :: npts !! Domain size - number of land pixels (unitless) |
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| 1604 | REAL(r_std), DIMENSION(npts), INTENT(in) :: temp_in !! Temperature (K) |
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| 1605 | REAL(r_std), DIMENSION(npts), INTENT(in) :: tau !! residence time of the pool considered (days) |
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| 1606 | !! 0.2 Output variables |
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| 1607 | REAL(r_std), DIMENSION(npts) :: tempfunc_result !! Temperature control factor (0-1, unitless) |
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| 1608 | |
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| 1609 | !! 0.3 Modified variables |
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| 1610 | |
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| 1611 | !! 0.4 Local variables |
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| 1612 | REAL(r_std), DIMENSION(npts) :: Ea !! Activation Energy |
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| 1613 | REAL(r_std), DIMENSION(npts) :: Q10_soil !! Q10 values calculated based on Ea |
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| 1614 | !_ ================================================================================================================================ |
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| 1615 | |
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| 1616 | ! This relationship is based on a reanalysis of the data published by LefÚvre et al. 2014 in global change biology |
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| 1617 | ! We use MAX(cent,(temp_in(:)-ZeroCelsius)*(temp_in(:)-ZeroCelsius)))) because for values between -10 and 10 degC |
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| 1618 | ! the Q10 values are close to infinity |
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| 1619 | Ea(:)=a_term_Q10_soil*tau + b_term_Q10_soil |
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| 1620 | Q10_soil(:)=exp((dix*Ea(:))/(RR*MAX(cent,(temp_in(:)-ZeroCelsius)*(temp_in(:)-ZeroCelsius)))) |
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| 1621 | tempfunc_result(:) = exp( log(Q10_soil(:)) * ( temp_in(:) - (ZeroCelsius+tsoil_ref)) / Q10 ) |
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| 1622 | tempfunc_result(:) = MIN( un, tempfunc_result(:) ) |
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| 1623 | WHERE (temp_in(:) .LT. zero) |
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| 1624 | tempfunc_result(:) = zero |
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| 1625 | ENDWHERE |
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| 1626 | END FUNCTION control_temp_func |
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| 1627 | |
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| 1628 | END MODULE stomate_litter |
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