1 | MODULE sbcice_lim_2 |
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2 | !!====================================================================== |
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3 | !! *** MODULE sbcice_lim_2 *** |
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4 | !! Surface module : update surface ocean boundary condition over ice covered area using LIM sea-ice model |
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5 | !! Sea-Ice model : LIM-2 Sea ice model time-stepping |
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6 | !!====================================================================== |
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7 | !! History : 1.0 ! 06-2006 (G. Madec) from icestp_2.F90 |
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8 | !! 3.0 ! 08-2008 (S. Masson, E. .... ) coupled interface |
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9 | !! 3.3 ! 05-2009 (G.Garric) addition of the lim2_evp case |
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10 | !!---------------------------------------------------------------------- |
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11 | #if defined key_lim2 |
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12 | !!---------------------------------------------------------------------- |
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13 | !! 'key_lim2' : LIM-2 sea-ice model |
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14 | !!---------------------------------------------------------------------- |
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15 | !! sbc_ice_lim_2 : sea-ice model time-stepping and update ocean sbc over ice-covered area |
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16 | !!---------------------------------------------------------------------- |
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17 | USE oce ! ocean dynamics and tracers |
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18 | USE dom_oce ! ocean space and time domain |
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19 | USE ice_2 |
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20 | USE par_ice_2 |
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21 | USE iceini_2 |
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22 | USE dom_ice_2 |
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23 | |
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24 | USE sbc_oce ! Surface boundary condition: ocean fields |
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25 | USE sbc_ice ! Surface boundary condition: ice fields |
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26 | USE sbcblk_core ! Surface boundary condition: CORE bulk |
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27 | USE sbcblk_clio ! Surface boundary condition: CLIO bulk |
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28 | USE sbccpl ! Surface boundary condition: coupled interface |
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29 | USE albedo |
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30 | |
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31 | USE phycst ! Define parameters for the routines |
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32 | USE eosbn2 ! equation of state |
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33 | USE limdyn_2 |
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34 | USE limtrp_2 |
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35 | USE limdmp_2 |
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36 | USE limthd_2 |
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37 | USE limsbc_2 ! sea surface boundary condition |
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38 | USE limdia_2 |
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39 | USE limwri_2 |
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40 | USE limrst_2 |
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41 | |
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42 | USE c1d ! 1D vertical configuration |
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43 | |
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44 | USE lbclnk ! lateral boundary condition - MPP link |
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45 | USE lib_mpp ! MPP library |
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46 | USE wrk_nemo ! work arrays |
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47 | USE iom ! I/O manager library |
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48 | USE in_out_manager ! I/O manager |
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49 | USE prtctl ! Print control |
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50 | |
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51 | # if defined key_agrif |
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52 | USE agrif_ice |
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53 | USE agrif_lim2_update |
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54 | # endif |
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55 | |
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56 | #if defined key_bdy |
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57 | USE bdyice_lim ! unstructured open boundary data (bdy_ice_lim routine) |
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58 | #endif |
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59 | |
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60 | IMPLICIT NONE |
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61 | PRIVATE |
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62 | |
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63 | PUBLIC sbc_ice_lim_2 ! routine called by sbcmod.F90 |
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64 | |
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65 | !! * Substitutions |
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66 | # include "domzgr_substitute.h90" |
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67 | # include "vectopt_loop_substitute.h90" |
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68 | !!---------------------------------------------------------------------- |
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69 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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70 | !! $Id$ |
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71 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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72 | !!---------------------------------------------------------------------- |
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73 | CONTAINS |
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74 | |
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75 | SUBROUTINE sbc_ice_lim_2( kt, ksbc ) |
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76 | !!--------------------------------------------------------------------- |
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77 | !! *** ROUTINE sbc_ice_lim_2 *** |
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78 | !! |
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79 | !! ** Purpose : update the ocean surface boundary condition via the |
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80 | !! Louvain la Neuve Sea Ice Model time stepping |
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81 | !! |
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82 | !! ** Method : ice model time stepping |
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83 | !! - call the ice dynamics routine |
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84 | !! - call the ice advection/diffusion routine |
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85 | !! - call the ice thermodynamics routine |
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86 | !! - call the routine that computes mass and |
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87 | !! heat fluxes at the ice/ocean interface |
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88 | !! - save the outputs |
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89 | !! - save the outputs for restart when necessary |
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90 | !! |
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91 | !! ** Action : - time evolution of the LIM sea-ice model |
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92 | !! - update all sbc variables below sea-ice: |
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93 | !! utau, vtau, taum, wndm, qns , qsr, emp , sfx |
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94 | !!--------------------------------------------------------------------- |
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95 | INTEGER, INTENT(in) :: kt ! ocean time step |
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96 | INTEGER, INTENT(in) :: ksbc ! type of sbc ( =3 CLIO bulk ; =4 CORE bulk ; =5 coupled ) |
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97 | !! |
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98 | INTEGER :: ji, jj ! dummy loop indices |
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99 | REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_os ! ice albedo under overcast sky |
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100 | REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_cs ! ice albedo under clear sky |
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101 | REAL(wp), DIMENSION(:,:,:), POINTER :: zalb_ice ! mean ice albedo |
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102 | REAL(wp), DIMENSION(:,:,:), POINTER :: zsist ! ice surface temperature (K) |
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103 | REAL(wp), DIMENSION(:,: ), POINTER :: zutau_ice, zvtau_ice |
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104 | !!---------------------------------------------------------------------- |
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105 | |
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106 | IF( kt == nit000 ) THEN |
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107 | IF(lwp) WRITE(numout,*) |
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108 | IF(lwp) WRITE(numout,*) 'sbc_ice_lim_2 : update ocean surface boudary condition' |
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109 | IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~ via Louvain la Neuve Ice Model (LIM) time stepping' |
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110 | ! |
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111 | CALL ice_init_2 |
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112 | ! |
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113 | # if defined key_agrif |
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114 | IF( .NOT. Agrif_Root() ) CALL Agrif_InitValues_cont_lim2 ! AGRIF: set the meshes |
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115 | # endif |
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116 | ENDIF |
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117 | |
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118 | ! !----------------------! |
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119 | IF( MOD( kt-1, nn_fsbc ) == 0 ) THEN ! Ice time-step only ! |
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120 | ! !----------------------! |
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121 | # if defined key_agrif |
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122 | IF( .NOT. Agrif_Root() ) lim_nbstep = MOD(lim_nbstep,Agrif_rhot()& |
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123 | &*Agrif_PArent(nn_fsbc)/REAL(nn_fsbc)) + 1 |
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124 | # endif |
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125 | |
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126 | CALL wrk_alloc( jpi,jpj , zutau_ice, zvtau_ice) |
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127 | CALL wrk_alloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist ) |
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128 | |
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129 | ! Bulk Formulea ! |
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130 | !----------------! |
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131 | ! ... mean surface ocean current at ice dynamics point |
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132 | SELECT CASE( cp_ice_msh ) |
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133 | CASE( 'I' ) !== B-grid ice dynamics : I-point (i.e. F-point with sea-ice indexation) |
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134 | DO jj = 2, jpj |
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135 | DO ji = 2, jpi ! NO vector opt. possible |
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136 | u_oce(ji,jj) = 0.5_wp * ( ssu_m(ji-1,jj ) * umask(ji-1,jj ,1) & |
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137 | & + ssu_m(ji-1,jj-1) * umask(ji-1,jj-1,1) ) * tmu(ji,jj) |
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138 | v_oce(ji,jj) = 0.5_wp * ( ssv_m(ji ,jj-1) * vmask(ji ,jj-1,1) & |
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139 | & + ssv_m(ji-1,jj-1) * vmask(ji-1,jj-1,1) ) * tmu(ji,jj) |
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140 | END DO |
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141 | END DO |
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142 | CALL lbc_lnk( u_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices) |
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143 | CALL lbc_lnk( v_oce, 'I', -1. ) ! I-point (i.e. F-point with ice indices) |
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144 | ! |
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145 | CASE( 'C' ) !== C-grid ice dynamics : U & V-points (same as ocean) |
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146 | u_oce(:,:) = ssu_m(:,:) * umask(:,:,1) ! mean surface ocean current at ice velocity point |
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147 | v_oce(:,:) = ssv_m(:,:) * vmask(:,:,1) |
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148 | ! |
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149 | END SELECT |
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150 | |
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151 | ! ... masked sea surface freezing temperature [Kelvin] (set to rt0 over land) |
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152 | tfu(:,:) = eos_fzp( sss_m ) + rt0 |
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153 | |
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154 | zsist (:,:,1) = sist (:,:) + rt0 * ( 1. - tmask(:,:,1) ) |
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155 | |
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156 | ! Ice albedo |
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157 | |
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158 | CALL albedo_ice( zsist, reshape( hicif, (/jpi,jpj,1/) ), & |
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159 | reshape( hsnif, (/jpi,jpj,1/) ), & |
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160 | zalb_cs, zalb_os ) |
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161 | |
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162 | SELECT CASE( ksbc ) |
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163 | CASE( jp_core , jp_purecpl ) ! CORE and COUPLED bulk formulations |
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164 | |
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165 | ! albedo depends on cloud fraction because of non-linear spectral effects |
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166 | zalb_ice(:,:,:) = ( 1. - cldf_ice ) * zalb_cs(:,:,:) + cldf_ice * zalb_os(:,:,:) |
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167 | ! In CLIO the cloud fraction is read in the climatology and the all-sky albedo |
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168 | ! (zalb_ice) is computed within the bulk routine |
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169 | |
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170 | END SELECT |
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171 | |
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172 | ! ... Sea-ice surface boundary conditions output from bulk formulae : |
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173 | ! - utau_ice ! surface ice stress i-component (I-point) [N/m2] |
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174 | ! - vtau_ice ! surface ice stress j-component (I-point) [N/m2] |
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175 | ! - qns_ice ! non solar heat flux over ice (T-point) [W/m2] |
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176 | ! - qsr_ice ! solar heat flux over ice (T-point) [W/m2] |
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177 | ! - qla_ice ! latent heat flux over ice (T-point) [W/m2] |
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178 | ! - dqns_ice ! non solar heat sensistivity (T-point) [W/m2] |
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179 | ! - dqla_ice ! latent heat sensistivity (T-point) [W/m2] |
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180 | ! - tprecip ! total precipitation (T-point) [Kg/m2/s] |
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181 | ! - sprecip ! solid precipitation (T-point) [Kg/m2/s] |
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182 | ! - fr1_i0 ! 1sr fraction of qsr penetration in ice [%] |
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183 | ! - fr2_i0 ! 2nd fraction of qsr penetration in ice [%] |
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184 | ! |
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185 | SELECT CASE( ksbc ) |
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186 | CASE( jp_clio ) ! CLIO bulk formulation |
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187 | ! CALL blk_ice_clio( zsist, zalb_cs , zalb_os , zalb_ice , & |
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188 | ! & utau_ice , vtau_ice , qns_ice , qsr_ice, & |
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189 | ! & qla_ice , dqns_ice , dqla_ice , & |
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190 | ! & tprecip , sprecip , & |
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191 | ! & fr1_i0 , fr2_i0 , cp_ice_msh , jpl ) |
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192 | CALL blk_ice_clio_tau |
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193 | CALL blk_ice_clio_flx( zsist, zalb_cs, zalb_os, zalb_ice ) |
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194 | |
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195 | CASE( jp_core ) ! CORE bulk formulation |
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196 | CALL blk_ice_core_tau |
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197 | CALL blk_ice_core_flx( zsist, zalb_ice ) |
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198 | |
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199 | CASE( jp_purecpl ) ! Coupled formulation : atmosphere-ice stress only (fluxes provided after ice dynamics) |
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200 | CALL sbc_cpl_ice_tau( utau_ice , vtau_ice ) |
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201 | END SELECT |
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202 | |
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203 | IF( ln_mixcpl) THEN |
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204 | CALL sbc_cpl_ice_tau( zutau_ice , zvtau_ice ) |
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205 | utau_ice(:,:) = utau_ice(:,:) * xcplmask(:,:,0) + zutau_ice(:,:) * ( 1. - xcplmask(:,:,0) ) |
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206 | vtau_ice(:,:) = vtau_ice(:,:) * xcplmask(:,:,0) + zvtau_ice(:,:) * ( 1. - xcplmask(:,:,0) ) |
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207 | ENDIF |
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208 | |
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209 | CALL iom_put( 'utau_ice', utau_ice ) ! Wind stress over ice along i-axis at I-point |
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210 | CALL iom_put( 'vtau_ice', vtau_ice ) ! Wind stress over ice along j-axis at I-point |
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211 | |
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212 | IF(ln_ctl) THEN ! print mean trends (used for debugging) |
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213 | CALL prt_ctl_info( 'Ice Forcings ' ) |
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214 | CALL prt_ctl( tab2d_1=tprecip ,clinfo1=' sbc_ice_lim: precip : ', tab2d_2=sprecip , clinfo2=' Snow : ' ) |
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215 | CALL prt_ctl( tab2d_1=utau_ice,clinfo1=' sbc_ice_lim: utau_ice: ', tab2d_2=vtau_ice, clinfo2=' vtau_ice: ' ) |
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216 | CALL prt_ctl( tab2d_1=sst_m ,clinfo1=' sbc_ice_lim: sst : ', tab2d_2=sss_m , clinfo2=' sss : ' ) |
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217 | CALL prt_ctl( tab2d_1=u_oce ,clinfo1=' sbc_ice_lim: u_io : ', tab2d_2=v_oce , clinfo2=' v_io : ' ) |
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218 | CALL prt_ctl( tab2d_1=hsnif ,clinfo1=' sbc_ice_lim: hsnif 1: ', tab2d_2=hicif , clinfo2=' hicif : ' ) |
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219 | CALL prt_ctl( tab2d_1=frld ,clinfo1=' sbc_ice_lim: frld 1: ', tab2d_2=sist , clinfo2=' sist : ' ) |
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220 | ENDIF |
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221 | |
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222 | ! ---------------- ! |
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223 | ! Ice model step ! |
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224 | ! ---------------- ! |
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225 | numit = numit + nn_fsbc ! Ice model time step |
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226 | |
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227 | CALL lim_rst_opn_2 ( kt ) ! Open Ice restart file |
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228 | IF( .NOT. lk_c1d ) THEN ! Ice dynamics & transport (except in 1D case) |
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229 | CALL lim_dyn_2 ( kt ) ! Ice dynamics ( rheology/dynamics ) |
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230 | CALL lim_trp_2 ( kt ) ! Ice transport ( Advection/diffusion ) |
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231 | IF( ln_limdmp ) CALL lim_dmp_2 ( kt ) ! Ice damping |
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232 | #if defined key_bdy |
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233 | CALL bdy_ice_lim( kt ) ! bdy ice thermo |
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234 | #endif |
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235 | END IF |
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236 | ! ! Ice surface fluxes in coupled mode |
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237 | IF( ln_cpl ) THEN ! pure coupled and mixed forced-coupled configurations |
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238 | a_i(:,:,1)=fr_i |
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239 | CALL sbc_cpl_ice_flx( frld, & |
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240 | ! optional arguments, used only in 'mixed oce-ice' case |
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241 | & palbi=zalb_ice, psst=sst_m, pist=zsist ) |
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242 | sprecip(:,:) = - emp_ice(:,:) ! Ugly patch, WARNING, in coupled mode, sublimation included in snow (parsub = 0.) |
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243 | ENDIF |
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244 | CALL lim_thd_2 ( kt ) ! Ice thermodynamics |
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245 | CALL lim_sbc_flx_2 ( kt ) ! update surface ocean mass, heat & salt fluxes |
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246 | |
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247 | IF( .NOT. lk_mpp )THEN |
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248 | IF( MOD( kt+nn_fsbc-1, ninfo ) == 0 .OR. ntmoy == 1 ) & |
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249 | & CALL lim_dia_2 ( kt ) ! Ice Diagnostics |
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250 | ENDIF |
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251 | # if ! defined key_iomput |
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252 | CALL lim_wri_2 ( kt ) ! Ice outputs |
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253 | # endif |
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254 | IF( lrst_ice ) CALL lim_rst_write_2( kt ) ! Ice restart file |
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255 | ! |
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256 | # if defined key_agrif && defined key_lim2 |
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257 | IF( .NOT. Agrif_Root() ) CALL agrif_update_lim2( kt ) |
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258 | # endif |
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259 | ! |
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260 | CALL wrk_dealloc( jpi,jpj , zutau_ice, zvtau_ice) |
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261 | CALL wrk_dealloc( jpi,jpj,1, zalb_os, zalb_cs, zalb_ice, zsist ) |
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262 | ! |
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263 | ENDIF ! End sea-ice time step only |
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264 | ! |
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265 | ! !--------------------------! |
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266 | ! ! at all ocean time step ! |
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267 | ! !--------------------------! |
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268 | ! |
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269 | ! ! Update surface ocean stresses (only in ice-dynamic case) |
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270 | ! ! otherwise the atm.-ocean stresses are used everywhere |
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271 | IF( ln_limdyn ) CALL lim_sbc_tau_2( kt, ub(:,:,1), vb(:,:,1) ) ! using before instantaneous surf. currents |
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272 | ! |
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273 | END SUBROUTINE sbc_ice_lim_2 |
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274 | |
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275 | #else |
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276 | !!---------------------------------------------------------------------- |
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277 | !! Default option Dummy module NO LIM 2.0 sea-ice model |
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278 | !!---------------------------------------------------------------------- |
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279 | CONTAINS |
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280 | SUBROUTINE sbc_ice_lim_2 ( kt, ksbc ) ! Dummy routine |
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281 | INTEGER, INTENT(in) :: kt, ksbc |
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282 | WRITE(*,*) 'sbc_ice_lim_2: You should not have seen this print! error?', kt, ksbc |
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283 | END SUBROUTINE sbc_ice_lim_2 |
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284 | #endif |
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285 | |
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286 | !!====================================================================== |
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287 | END MODULE sbcice_lim_2 |
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