1 | MODULE sbcflx |
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2 | !!====================================================================== |
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3 | !! *** MODULE sbcflx *** |
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4 | !! Ocean forcing: momentum, heat and freshwater flux formulation |
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5 | !!===================================================================== |
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6 | !! History : 9.0 ! 06-06 (G. Madec) Original code |
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7 | !!---------------------------------------------------------------------- |
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8 | |
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9 | !!---------------------------------------------------------------------- |
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10 | !! namflx : flux formulation namlist |
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11 | !! sbc_flx : flux formulation as ocean surface boundary condition |
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12 | !! (forced mode, fluxes read in NetCDF files) |
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13 | !!---------------------------------------------------------------------- |
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14 | !! question diverses |
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15 | !! * ajouter un test sur la division entier de freqh et rdttra ??? |
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16 | !! ** ajoute dans namelist: 1 year forcing files |
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17 | !! or forcing file starts at the begining of the run |
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18 | !! *** we assume that the forcing file start and end with the previous |
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19 | !! year last record and the next year first record (useful for |
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20 | !! time interpolation, required even if no time interp???) |
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21 | !! * ajouter un test sur la division de la frequence en pas de temps |
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22 | !! ==> daymod ajout de nsec_year = number of second since the begining of the year |
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23 | !! assumed to be 0 at 0h january the 1st (i.e. 24h december the 31) |
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24 | !! |
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25 | !! *** regrouper dtatem et dtasal |
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26 | !!---------------------------------------------------------------------- |
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27 | USE oce ! ocean dynamics and tracers |
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28 | USE dom_oce ! ocean space and time domain |
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29 | USE sbc_oce ! Surface boundary condition: ocean fields |
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30 | USE phycst ! physical constants |
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31 | USE daymod ! calendar |
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32 | USE ocfzpt ! ocean freezing point |
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33 | USE fldread ! read input fields |
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34 | USE iom ! IOM library |
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35 | USE in_out_manager ! I/O manager |
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36 | USE lib_mpp ! distribued memory computing library |
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37 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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38 | |
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39 | IMPLICIT NONE |
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40 | PRIVATE |
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41 | |
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42 | PUBLIC sbc_flx ! routine called by step.F90 |
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43 | |
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44 | INTEGER , PARAMETER :: jpfld = 5 ! maximum number of files to read |
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45 | INTEGER , PARAMETER :: jp_utau = 1 ! index of wind stress (i-component) file |
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46 | INTEGER , PARAMETER :: jp_vtau = 2 ! index of wind stress (j-component) file |
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47 | INTEGER , PARAMETER :: jp_qtot = 3 ! index of total (non solar+solar) heat file |
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48 | INTEGER , PARAMETER :: jp_qsr = 4 ! index of solar heat file |
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49 | INTEGER , PARAMETER :: jp_emp = 5 ! index of evaporation-precipation file |
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50 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf ! structure of input fields (file informations, fields read) |
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51 | |
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52 | !! * Substitutions |
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53 | # include "domzgr_substitute.h90" |
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54 | !!---------------------------------------------------------------------- |
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55 | !! OPA 9.0 , LOCEAN-IPSL (2006) |
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56 | !! $ Id: $ |
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57 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
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58 | !!---------------------------------------------------------------------- |
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59 | |
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60 | CONTAINS |
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61 | |
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62 | SUBROUTINE sbc_flx( kt ) |
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63 | !!--------------------------------------------------------------------- |
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64 | !! *** ROUTINE sbc_flx *** |
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65 | !! |
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66 | !! ** Purpose : provide at each time step the surface ocean fluxes |
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67 | !! (momentum, heat, freshwater and runoff) |
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68 | !! |
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69 | !! ** Method : - READ each fluxes in NetCDF files: |
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70 | !! i-component of the stress utau (N/m2) |
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71 | !! j-component of the stress vtau (N/m2) |
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72 | !! net downward heat flux qtot (watt/m2) |
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73 | !! net downward radiative flux qsr (watt/m2) |
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74 | !! net upward freshwater (evapo - precip) emp (kg/m2/s) |
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75 | !! Assumptions made: |
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76 | !! - each file content an entire year (read record, not the time axis) |
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77 | !! - first and last record are part of the previous and next year |
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78 | !! (useful for time interpolation) |
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79 | !! - the number of records is 2 + 365*24 / freqh(jf) |
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80 | !! or 366 in leap year case |
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81 | !! |
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82 | !! CAUTION : - never mask the surface stress fields |
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83 | !! - the stress is assumed to be in the mesh referential |
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84 | !! i.e. the (i,j) referential |
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85 | !! |
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86 | !! ** Action : update at each time-step |
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87 | !! - utau & vtau : stress components in (i,j) referential |
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88 | !! - qns : non solar heat flux |
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89 | !! - qsr : solar heat flux |
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90 | !! - emp : evap - precip (volume flux) |
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91 | !! - emps : evap - precip (concentration/dillution) |
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92 | !!---------------------------------------------------------------------- |
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93 | INTEGER, INTENT(in) :: kt ! ocean time step |
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94 | !! |
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95 | INTEGER :: ji, jj, jf ! dummy indices |
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96 | INTEGER :: ierror ! return error code |
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97 | REAL(wp) :: zfact ! temporary scalar |
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98 | !! |
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99 | CHARACTER(len=100) :: cn_dir ! Root directory for location of flx files |
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100 | TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist information structures |
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101 | TYPE(FLD_N) :: sn_utau, sn_vtau, sn_qtot, sn_qsr, sn_emp ! informations about the fields to be read |
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102 | NAMELIST/namsbc_flx/ cn_dir, sn_utau, sn_vtau, sn_qtot, sn_qsr, sn_emp |
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103 | !!--------------------------------------------------------------------- |
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104 | INTEGER , PARAMETER :: jp_utau = 1 ! index of wind stress (i-component) file |
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105 | INTEGER , PARAMETER :: jp_vtau = 2 ! index of wind stress (j-component) file |
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106 | INTEGER , PARAMETER :: jp_qtot = 3 ! index of total (non solar+solar) heat file |
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107 | INTEGER , PARAMETER :: jp_qsr = 4 ! index of solar heat file |
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108 | INTEGER , PARAMETER :: jp_emp = 5 ! index of evaporation-precipation file |
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109 | |
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110 | |
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111 | ! ! ====================== ! |
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112 | IF( kt == nit000 ) THEN ! First call kt=nit000 ! |
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113 | ! ! ====================== ! |
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114 | ! set file information |
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115 | cn_dir = './' ! directory in which the model is executed |
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116 | ! ... default values (NB: frequency positive => hours, negative => months) |
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117 | ! ! file ! frequency ! variable ! time intep ! clim ! starting ! |
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118 | ! ! name ! (hours) ! name ! (T/F) ! (0/1) ! record ! |
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119 | sn_utau = FLD_N( 'utau.nc' , 24. , 'utau' , .FALSE. , 0 , 0 ) |
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120 | sn_vtau = FLD_N( 'vtau.nc' , 24. , 'vtau' , .FALSE. , 0 , 0 ) |
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121 | sn_qtot = FLD_N( 'qtot.nc' , 24. , 'qtot' , .FALSE. , 0 , 0 ) |
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122 | sn_qsr = FLD_N( 'qsr.nc' , 24. , 'qsr' , .FALSE. , 0 , 0 ) |
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123 | sn_emp = FLD_N( 'emp.nc' , 24. , 'emp' , .FALSE. , 0 , 0 ) |
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124 | |
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125 | REWIND ( numnam ) ! ... read in namlist namflx |
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126 | READ ( numnam, namsbc_flx ) |
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127 | |
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128 | ! store namelist information in an array |
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129 | slf_i(jp_utau) = sn_utau ; slf_i(jp_vtau) = sn_vtau |
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130 | slf_i(jp_qtot) = sn_qtot ; slf_i(jp_qsr ) = sn_qsr |
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131 | slf_i(jp_emp ) = sn_emp |
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132 | |
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133 | ! set sf structure |
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134 | ALLOCATE( sf(jpfld), STAT=ierror ) |
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135 | IF( ierror > 0 ) THEN |
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136 | CALL ctl_stop( 'sbc_flx: unable to allocate sf structure' ) ; RETURN |
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137 | ENDIF |
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138 | |
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139 | DO jf = 1, jpfld |
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140 | WRITE(sf(jf)%clrootname,'(a,a)' ) TRIM( cn_dir ), TRIM( slf_i(jf)%clname ) |
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141 | sf(jf)%freqh = slf_i(jf)%freqh |
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142 | sf(jf)%clvar = slf_i(jf)%clvar |
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143 | sf(jf)%ln_tint = slf_i(jf)%ln_tint |
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144 | sf(jf)%nclim = slf_i(jf)%nclim |
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145 | sf(jf)%nstrec = slf_i(jf)%nstrec |
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146 | END DO |
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147 | |
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148 | IF(lwp) THEN ! control print |
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149 | WRITE(numout,*) |
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150 | WRITE(numout,*) 'sbc_flx : flux formulation for ocean surface boundary condition' |
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151 | WRITE(numout,*) '~~~~~~~ ' |
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152 | WRITE(numout,*) ' namsbc_flx Namelist' |
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153 | WRITE(numout,*) ' list of files and frequency (>0: in hours ; <0 in months)' |
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154 | DO jf = 1, jpfld |
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155 | WRITE(numout,*) ' root filename: ' , trim( sf(jf)%clrootname ), & |
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156 | & ' variable name: ' , trim( sf(jf)%clvar ) |
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157 | WRITE(numout,*) ' frequency: ' , sf(jf)%freqh , & |
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158 | & ' time interp: ' , sf(jf)%ln_tint , & |
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159 | & ' climatology: ' , sf(jf)%nclim , & |
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160 | & ' starting record: ', sf(jf)%nstrec |
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161 | END DO |
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162 | ENDIF |
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163 | ! |
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164 | ENDIF |
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165 | |
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166 | CALL fld_read( kt, nn_fsbc, sf ) ! Read input fields and provides the |
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167 | ! ! input fields at the current time-step |
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168 | |
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169 | ! set the ocean fluxes from read fields |
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170 | !CDIR COLLAPSE |
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171 | DO jj = 1, jpj |
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172 | DO ji = 1, jpi |
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173 | utau(ji,jj) = sf(jp_utau)%fnow(ji,jj) |
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174 | vtau(ji,jj) = sf(jp_vtau)%fnow(ji,jj) |
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175 | qns (ji,jj) = sf(jp_qtot)%fnow(ji,jj) - sf(jp_qsr)%fnow(ji,jj) |
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176 | qsr (ji,jj) = sf(jp_qsr )%fnow(ji,jj) |
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177 | emp (ji,jj) = sf(jp_emp )%fnow(ji,jj) |
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178 | END DO |
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179 | END DO |
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180 | |
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181 | ! control print (if less than 100 time-step asked) |
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182 | IF( nitend-nit000 <= 100 .AND. lwp ) THEN |
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183 | WRITE(numout,*) |
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184 | WRITE(numout,*) ' read daily momentum, heat and freshwater fluxes OK' |
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185 | DO jf = 1, jpfld |
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186 | IF( jf == jp_utau .OR. jf == jp_vtau ) zfact = 1. |
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187 | IF( jf == jp_qtot .OR. jf == jp_qsr ) zfact = 0.1 |
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188 | IF( jf == jp_emp ) zfact = 86400. |
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189 | WRITE(numout,*) |
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190 | WRITE(numout,*) ' day: ', ndastp , TRIM(sf(jf)%clvar), ' * ', zfact |
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191 | CALL prihre( sf(jf)%fnow, jpi, jpj, 1, jpi, 20, 1, jpj, 10, 1., numout ) |
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192 | END DO |
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193 | CALL FLUSH(numout) |
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194 | ENDIF |
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195 | ! |
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196 | END SUBROUTINE sbc_flx |
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197 | |
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198 | !!====================================================================== |
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199 | END MODULE sbcflx |
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