1 | MODULE p2zsed |
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2 | !!====================================================================== |
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3 | !! *** MODULE p2zsed *** |
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4 | !! TOP : PISCES Compute loss of organic matter in the sediments |
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5 | !!====================================================================== |
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6 | !! History : - ! 1995-06 (M. Levy) original code |
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7 | !! - ! 2000-12 (E. Kestenare) clean up |
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8 | !! 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 + simplifications |
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9 | !!---------------------------------------------------------------------- |
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10 | !! p2z_sed : Compute loss of organic matter in the sediments |
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11 | !!---------------------------------------------------------------------- |
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12 | USE oce_trc ! |
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13 | USE trc |
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14 | USE sms_pisces |
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15 | USE lbclnk |
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16 | USE trd_oce |
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17 | USE trdtrc |
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18 | USE iom |
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19 | USE prtctl_trc ! Print control for debbuging |
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20 | |
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21 | IMPLICIT NONE |
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22 | PRIVATE |
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23 | |
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24 | PUBLIC p2z_sed ! called in ??? |
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25 | PUBLIC p2z_sed_init ! called in ??? |
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26 | |
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27 | REAL(wp), PUBLIC :: sedlam !: time coefficient of POC remineralization in sediments |
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28 | REAL(wp), PUBLIC :: sedlostpoc ! mass of POC lost in sediments |
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29 | REAL(wp), PUBLIC :: vsed ! detritus sedimentation speed [m/s] |
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30 | REAL(wp), PUBLIC :: xhr ! coeff for martin''s remineralisation profile |
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31 | |
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32 | !!---------------------------------------------------------------------- |
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33 | !! NEMO/TOP 3.3 , NEMO Consortium (2010) |
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34 | !! $Id$ |
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35 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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36 | !!---------------------------------------------------------------------- |
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37 | CONTAINS |
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38 | |
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39 | SUBROUTINE p2z_sed( kt ) |
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40 | !!--------------------------------------------------------------------- |
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41 | !! *** ROUTINE p2z_sed *** |
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42 | !! |
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43 | !! ** Purpose : compute the now trend due to the vertical sedimentation of |
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44 | !! detritus and add it to the general trend of detritus equations |
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45 | !! |
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46 | !! ** Method : this ROUTINE compute not exactly the advection but the |
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47 | !! transport term, i.e. dz(wt) and dz(ws)., dz(wtr) |
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48 | !! using an upstream scheme |
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49 | !! the now vertical advection of tracers is given by: |
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50 | !! dz(trn wn) = 1/bt dk+1( e1t e2t vsed (trn) ) |
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51 | !! add this trend now to the general trend of tracer (ta,sa,tra): |
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52 | !! tra = tra + dz(trn wn) |
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53 | !! |
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54 | !! IF 'key_diabio' is defined, the now vertical advection |
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55 | !! trend of passive tracers is saved for futher diagnostics. |
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56 | !!--------------------------------------------------------------------- |
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57 | INTEGER, INTENT( in ) :: kt ! ocean time-step index |
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58 | ! |
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59 | INTEGER :: ji, jj, jk, jl, ierr |
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60 | CHARACTER (len=25) :: charout |
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61 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zw2d |
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62 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zwork, ztra |
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63 | !!--------------------------------------------------------------------- |
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64 | ! |
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65 | IF( ln_timing ) CALL timing_start('p2z_sed') |
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66 | ! |
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67 | IF( kt == nittrc000 ) THEN |
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68 | IF(lwp) WRITE(numout,*) |
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69 | IF(lwp) WRITE(numout,*) ' p2z_sed: LOBSTER sedimentation' |
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70 | IF(lwp) WRITE(numout,*) ' ~~~~~~~' |
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71 | ENDIF |
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72 | |
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73 | ! sedimentation of detritus : upstream scheme |
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74 | ! -------------------------------------------- |
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75 | |
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76 | ! for detritus sedimentation only - jpdet |
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77 | zwork(:,:,1 ) = 0.e0 ! surface value set to zero |
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78 | zwork(:,:,jpk) = 0.e0 ! bottom value set to zero |
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79 | |
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80 | ! tracer flux at w-point: we use -vsed (downward flux) with simplification : no e1*e2 |
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81 | DO jk = 2, jpkm1 |
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82 | zwork(:,:,jk) = -vsed * trn(:,:,jk-1,jpdet) |
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83 | END DO |
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84 | |
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85 | ! tracer flux divergence at t-point added to the general trend |
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86 | DO jk = 1, jpkm1 |
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87 | DO jj = 1, jpj |
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88 | DO ji = 1, jpi |
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89 | ztra(ji,jj,jk) = - ( zwork(ji,jj,jk) - zwork(ji,jj,jk+1) ) / e3t_n(ji,jj,jk) |
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90 | tra(ji,jj,jk,jpdet) = tra(ji,jj,jk,jpdet) + ztra(ji,jj,jk) |
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91 | END DO |
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92 | END DO |
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93 | END DO |
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94 | |
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95 | IF( lk_iomput ) THEN |
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96 | IF( iom_use( "TDETSED" ) ) THEN |
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97 | ALLOCATE( zw2d(jpi,jpj) ) |
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98 | zw2d(:,:) = ztra(:,:,1) * e3t_n(:,:,1) * 86400._wp |
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99 | DO jk = 2, jpkm1 |
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100 | zw2d(:,:) = zw2d(:,:) + ztra(:,:,jk) * e3t_n(:,:,jk) * 86400._wp |
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101 | END DO |
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102 | CALL iom_put( "TDETSED", zw2d ) |
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103 | DEALLOCATE( zw2d ) |
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104 | ENDIF |
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105 | ENDIF |
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106 | ! |
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107 | |
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108 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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109 | WRITE(charout, FMT="('sed')") |
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110 | CALL prt_ctl_trc_info(charout) |
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111 | CALL prt_ctl_trc(tab4d=tra, mask=tmask, clinfo=ctrcnm) |
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112 | ENDIF |
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113 | ! |
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114 | IF( ln_timing ) CALL timing_stop('p2z_sed') |
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115 | ! |
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116 | END SUBROUTINE p2z_sed |
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117 | |
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118 | |
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119 | SUBROUTINE p2z_sed_init |
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120 | !!---------------------------------------------------------------------- |
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121 | !! *** ROUTINE p2z_sed_init *** |
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122 | !! |
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123 | !! ** Purpose : Parameters from aphotic layers to sediment |
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124 | !! |
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125 | !! ** Method : Read the namlobsed namelist and check the parameters |
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126 | !! |
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127 | !!---------------------------------------------------------------------- |
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128 | NAMELIST/namlobsed/ sedlam, sedlostpoc, vsed, xhr |
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129 | INTEGER :: ios ! Local integer output status for namelist read |
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130 | |
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131 | REWIND( numnatp_ref ) ! Namelist namlobsed in reference namelist : Lobster sediments |
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132 | READ ( numnatp_ref, namlobsed, IOSTAT = ios, ERR = 901) |
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133 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namlosed in reference namelist', lwp ) |
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134 | |
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135 | REWIND( numnatp_cfg ) ! Namelist namlobsed in configuration namelist : Lobster sediments |
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136 | READ ( numnatp_cfg, namlobsed, IOSTAT = ios, ERR = 902 ) |
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137 | 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namlobsed in configuration namelist', lwp ) |
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138 | IF(lwm) WRITE ( numonp, namlobsed ) |
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139 | |
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140 | IF(lwp) THEN |
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141 | WRITE(numout,*) ' Namelist namlobsed' |
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142 | WRITE(numout,*) ' time coeff of POC in sediments sedlam =', sedlam |
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143 | WRITE(numout,*) ' Sediment geol loss for POC sedlostpoc=', sedlostpoc |
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144 | WRITE(numout,*) ' detritus sedimentation speed vsed =', 86400 * vsed , ' d' |
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145 | WRITE(numout,*) ' coeff for martin''s remineralistion xhr =', xhr |
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146 | WRITE(numout,*) ' ' |
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147 | ENDIF |
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148 | ! |
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149 | END SUBROUTINE p2z_sed_init |
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150 | |
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151 | !!====================================================================== |
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152 | END MODULE p2zsed |
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