1 | MODULE asmbkg |
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2 | !!====================================================================== |
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3 | !! *** MODULE asmtrj -> asmbkg *** |
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4 | !! Assimilation trajectory interface: Write to file the background state and the model state trajectory |
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5 | !!====================================================================== |
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6 | !! History : ! 2007-03 (M. Martin) Met. Office version |
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7 | !! ! 2007-04 (A. Weaver) asm_trj_wri, original code |
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8 | !! ! 2007-03 (K. Mogensen) Adapt to NEMOVAR and use IOM instead of IOIPSL |
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9 | !! ! 2007-04 (A. Weaver) Name change (formally asmbkg.F90). Distinguish |
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10 | !! background states in Jb term and at analysis time. |
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11 | !! Include state trajectory routine (currently empty) |
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12 | !! ! 2007-07 (A. Weaver) Add tke_rst and flt_rst for case nitbkg=0 |
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13 | !! ! 2009-03 (F. Vigilant) Add hmlp (zdfmxl) for no tracer nmldp=2 |
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14 | !! ! 2009-06 (F. Vigilant) asm_trj_wri: special case when kt=nit000-1 |
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15 | !! ! 2009-07 (F. Vigilant) asm_trj_wri: add computation of eiv at restart |
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16 | !! ! 2010-01 (A. Vidard) split asm_trj_wri into tam_trj_wri and asm_bkg_wri |
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17 | !!---------------------------------------------------------------------- |
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18 | |
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19 | !!---------------------------------------------------------------------- |
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20 | !! 'key_asminc' : Switch on the assimilation increment interface |
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21 | !!---------------------------------------------------------------------- |
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22 | !! asm_bkg_wri : Write out the background state |
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23 | !! asm_trj_wri : Write out the model state trajectory (used with 4D-Var) |
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24 | !!---------------------------------------------------------------------- |
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25 | USE oce ! Dynamics and active tracers defined in memory |
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26 | USE sbc_oce ! Ocean surface boundary conditions |
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27 | USE zdf_oce ! Vertical mixing variables |
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28 | USE zdfddm ! Double diffusion mixing parameterization |
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29 | USE ldftra_oce ! Lateral tracer mixing coefficient defined in memory |
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30 | USE ldfslp ! Slopes of neutral surfaces |
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31 | USE tradmp ! Tracer damping |
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32 | #if defined key_zdftke |
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33 | USE zdftke ! TKE vertical physics |
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34 | #endif |
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35 | USE eosbn2 ! Equation of state (eos_bn2 routine) |
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36 | USE zdfmxl ! Mixed layer depth |
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37 | USE dom_oce, ONLY : ndastp |
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38 | USE sol_oce, ONLY : gcx ! Solver variables defined in memory |
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39 | USE in_out_manager ! I/O manager |
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40 | USE iom ! I/O module |
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41 | USE asmpar ! Parameters for the assmilation interface |
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42 | USE zdfmxl ! mixed layer depth |
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43 | #if defined key_traldf_c2d |
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44 | USE ldfeiv ! eddy induced velocity coef. (ldf_eiv routine) |
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45 | #endif |
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46 | #if defined key_lim2 |
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47 | USE ice_2 |
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48 | #endif |
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49 | #if defined key_lim3 |
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50 | USE ice |
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51 | #endif |
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52 | #if defined key_top |
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53 | USE asmbgc, ONLY: asm_bgc_bkg_wri |
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54 | #endif |
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55 | USE timing |
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56 | IMPLICIT NONE |
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57 | PRIVATE |
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58 | |
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59 | PUBLIC asm_bkg_wri !: Write out the background state |
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60 | |
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61 | !!---------------------------------------------------------------------- |
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62 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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63 | !! $Id$ |
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64 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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65 | !!---------------------------------------------------------------------- |
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66 | CONTAINS |
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67 | |
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68 | SUBROUTINE asm_bkg_wri( kt ) |
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69 | !!----------------------------------------------------------------------- |
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70 | !! *** ROUTINE asm_bkg_wri *** |
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71 | !! |
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72 | !! ** Purpose : Write to file the background state for later use in the |
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73 | !! inner loop of data assimilation or for direct initialization |
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74 | !! in the outer loop. |
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75 | !! |
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76 | !! ** Method : Write out the background state for use in the Jb term |
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77 | !! in the cost function and for use with direct initialization |
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78 | !! at analysis time. |
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79 | !!----------------------------------------------------------------------- |
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80 | INTEGER, INTENT( IN ) :: kt ! Current time-step |
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81 | ! |
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82 | CHARACTER (LEN=50) :: cl_asmbkg |
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83 | CHARACTER (LEN=50) :: cl_asmdin |
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84 | LOGICAL :: llok ! Check if file exists |
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85 | INTEGER :: inum ! File unit number |
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86 | REAL(wp) :: zdate ! Date |
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87 | !!----------------------------------------------------------------------- |
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88 | |
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89 | ! !------------------------------------------- |
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90 | IF( kt == nitbkg_r ) THEN ! Write out background at time step nitbkg_r |
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91 | ! !-----------------------------------======== |
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92 | ! |
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93 | WRITE(cl_asmbkg, FMT='(A,".nc")' ) TRIM( c_asmbkg ) |
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94 | cl_asmbkg = TRIM( cl_asmbkg ) |
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95 | INQUIRE( FILE = cl_asmbkg, EXIST = llok ) |
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96 | ! |
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97 | IF( .NOT. llok ) THEN |
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98 | IF(lwp) WRITE(numout,*) ' Setting up assimilation background file '// TRIM( c_asmbkg ) |
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99 | ! |
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100 | ! ! Define the output file |
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101 | CALL iom_open( c_asmbkg, inum, ldwrt = .TRUE., kiolib = jprstlib) |
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102 | ! |
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103 | IF( nitbkg_r == nit000 - 1 ) THEN ! Treat special case when nitbkg = 0 |
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104 | zdate = REAL( ndastp ) |
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105 | #if defined key_zdftke |
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106 | ! lk_zdftke=T : Read turbulent kinetic energy ( en ) |
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107 | IF(lwp) WRITE(numout,*) ' Reading TKE (en) from restart...' |
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108 | CALL tke_rst( nit000, 'READ' ) ! lk_zdftke=T : Read turbulent kinetic energy ( en ) |
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109 | |
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110 | #endif |
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111 | ELSE |
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112 | zdate = REAL( ndastp ) |
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113 | ENDIF |
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114 | ! |
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115 | ! ! Write the information |
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116 | IF(nn_timing == 2) CALL timing_start('iom_rstput') |
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117 | CALL iom_rstput( kt, nitbkg_r, inum, 'rdastp' , zdate ) |
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118 | CALL iom_rstput( kt, nitbkg_r, inum, 'un' , un ) |
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119 | CALL iom_rstput( kt, nitbkg_r, inum, 'vn' , vn ) |
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120 | CALL iom_rstput( kt, nitbkg_r, inum, 'tn' , tsn(:,:,:,jp_tem) ) |
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121 | CALL iom_rstput( kt, nitbkg_r, inum, 'sn' , tsn(:,:,:,jp_sal) ) |
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122 | CALL iom_rstput( kt, nitbkg_r, inum, 'sshn' , sshn ) |
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123 | #if defined key_zdftke |
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124 | CALL iom_rstput( kt, nitbkg_r, inum, 'en' , en ) |
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125 | #endif |
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126 | ! CALL iom_rstput( kt, nitbkg_r, inum, 'gcx' , gcx ) |
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127 | CALL iom_rstput( kt, nitbkg_r, inum, 'avt' , avt ) |
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128 | IF(nn_timing == 2) CALL timing_stop('iom_rstput') |
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129 | ! |
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130 | #if defined key_top |
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131 | CALL asm_bgc_bkg_wri( kt, inum ) |
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132 | ! |
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133 | #endif |
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134 | CALL iom_close( inum ) |
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135 | ENDIF |
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136 | ! |
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137 | ENDIF |
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138 | |
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139 | ! !------------------------------------------- |
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140 | IF( kt == nitdin_r ) THEN ! Write out background at time step nitdin_r |
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141 | ! !-----------------------------------======== |
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142 | ! |
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143 | WRITE(cl_asmdin, FMT='(A,".nc")' ) TRIM( c_asmdin ) |
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144 | cl_asmdin = TRIM( cl_asmdin ) |
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145 | INQUIRE( FILE = cl_asmdin, EXIST = llok ) |
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146 | ! |
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147 | IF( .NOT. llok ) THEN |
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148 | IF(lwp) WRITE(numout,*) ' Setting up assimilation background file '// TRIM( c_asmdin ) |
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149 | ! |
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150 | ! ! Define the output file |
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151 | CALL iom_open( c_asmdin, inum, ldwrt = .TRUE., kiolib = jprstlib) |
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152 | ! |
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153 | IF( nitdin_r == nit000 - 1 ) THEN ! Treat special case when nitbkg = 0 |
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154 | |
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155 | zdate = REAL( ndastp ) |
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156 | ELSE |
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157 | zdate = REAL( ndastp ) |
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158 | ENDIF |
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159 | ! |
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160 | ! ! Write the information |
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161 | IF(nn_timing == 2) CALL timing_start('iom_rstput') |
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162 | CALL iom_rstput( kt, nitdin_r, inum, 'rdastp' , zdate ) |
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163 | CALL iom_rstput( kt, nitdin_r, inum, 'un' , un ) |
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164 | CALL iom_rstput( kt, nitdin_r, inum, 'vn' , vn ) |
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165 | CALL iom_rstput( kt, nitdin_r, inum, 'tn' , tsn(:,:,:,jp_tem) ) |
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166 | CALL iom_rstput( kt, nitdin_r, inum, 'sn' , tsn(:,:,:,jp_sal) ) |
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167 | CALL iom_rstput( kt, nitdin_r, inum, 'avt' , avt ) |
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168 | CALL iom_rstput( kt, nitdin_r, inum, 'sshn' , sshn ) |
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169 | #if defined key_lim2 || defined key_lim3 |
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170 | IF(( nn_ice == 2 ) .OR. ( nn_ice == 3 )) THEN |
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171 | IF(ALLOCATED(frld)) THEN |
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172 | CALL iom_rstput( kt, nitdin_r, inum, 'iceconc', 1.0 - frld(:,:) ) |
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173 | ELSE |
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174 | CALL ctl_warn('Ice concentration not written to background as ice variable frld not allocated on this timestep') |
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175 | ENDIF |
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176 | ENDIF |
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177 | #endif |
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178 | IF(nn_timing == 2) CALL timing_stop('iom_rstput') |
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179 | ! |
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180 | CALL iom_close( inum ) |
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181 | ENDIF |
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182 | ! |
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183 | ENDIF |
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184 | ! |
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185 | END SUBROUTINE asm_bkg_wri |
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186 | |
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187 | !!====================================================================== |
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188 | END MODULE asmbkg |
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