1 | !!---------------------------------------------------------------------- |
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2 | !! *** tau_forced_monthly.h90 *** |
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3 | !!---------------------------------------------------------------------- |
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4 | |
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5 | !!---------------------------------------------------------------------- |
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6 | !! tau : update the surface wind stress - monthly fields in NetCDF |
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7 | !! file. |
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8 | !!---------------------------------------------------------------------- |
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9 | !! * local modules variables |
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10 | INTEGER :: & |
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11 | numtau, & ! logical unit for the i-component of the wind data |
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12 | numtav, & ! logical unit for the j-component of the wind data |
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13 | ntau1, ntau2 ! index of the first and second record used |
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14 | |
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15 | CHARACTER (len=34) :: & !!! * monthly climatology/interanual fields |
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16 | cl_taux = 'taux_1m.nc', & ! generic name of the i-component monthly NetCDF file |
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17 | cl_tauy = 'tauy_1m.nc' ! generic name of the j-component monthly NetCDF file |
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18 | |
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19 | REAL(wp), DIMENSION(jpi,jpj,2) :: & |
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20 | taux_dta, & ! i- and j-components of the surface stress (Pascal) |
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21 | tauy_dta ! at 2 consecutive months in the (i,j) referential |
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22 | !!---------------------------------------------------------------------- |
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23 | !! OPA 9.0 , LODYC-IPSL (2003) |
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24 | !!---------------------------------------------------------------------- |
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25 | |
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26 | CONTAINS |
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27 | |
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28 | SUBROUTINE tau( kt ) |
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29 | !!--------------------------------------------------------------------- |
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30 | !! *** ROUTINE tau *** |
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31 | !! |
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32 | !! ** Purpose : provide to the ocean the stress at each time step |
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33 | !! |
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34 | !! ** Method : - Read the 2 monthly surface stress components in NetCDF |
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35 | !! file at 2 consecutive time-steps |
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36 | !! They are given in the (i,j) referential |
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37 | !! The i-component is given at U-point (INTERP package) |
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38 | !! The j-component is given at V-point (INTERP package) |
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39 | !! - a linear time-interpolation is performed to provide the |
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40 | !! stress at the kt time-step. |
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41 | !! |
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42 | !! CAUTION: never mask the surface stress field ! |
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43 | !! |
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44 | !! ** Action : |
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45 | !! update at each time-step the two components of the surface |
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46 | !! stress in both (i,j) and geographical referencial |
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47 | !! |
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48 | !! History : |
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49 | !! 4.0 ! 91-03 (G. Madec) Original code |
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50 | !! 6.0 ! 92-07 (M. Imbard) |
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51 | !! 8.1 ! 00-08 (D. Ludicone) adapted to ERS-NCEP |
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52 | !! 8.5 ! 02-11 (G. Madec) F90: Free form and module |
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53 | !! ! daily/monthly, forced/coupled form |
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54 | !!---------------------------------------------------------------------- |
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55 | !! * Modules used |
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56 | USE ioipsl ! NetCDF library |
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57 | !! * Arguments |
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58 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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59 | |
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60 | !! * Local declarations |
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61 | INTEGER, PARAMETER :: jpmonth = 12 |
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62 | INTEGER :: & |
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63 | imois, iman, itime, & |
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64 | i15, & |
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65 | ipi, ipj, ipk |
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66 | INTEGER, DIMENSION(jpmonth) :: istep |
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67 | REAL(wp) , DIMENSION(jpi,jpj):: & |
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68 | zlon , & |
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69 | zlat |
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70 | REAL(wp) , DIMENSION(jpk):: & |
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71 | zlev |
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72 | REAL(wp) :: & |
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73 | zsecond, & ! ??? |
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74 | zdate0, & ! ??? |
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75 | zxy ! coefficient of the linear time interpolation |
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76 | !!--------------------------------------------------------------------- |
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77 | |
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78 | ! -------------- ! |
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79 | ! Initialization ! |
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80 | ! -------------- ! |
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81 | |
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82 | ! iman=number of dates in data file (12 for a year of monthly values) |
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83 | iman = INT( raamo ) |
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84 | ipi=jpiglo |
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85 | ipj=jpjglo |
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86 | |
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87 | i15 = INT( 2*FLOAT( nday ) / ( FLOAT( nobis(nmonth) ) + 0.5 ) ) |
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88 | |
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89 | imois = nmonth + i15 - 1 |
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90 | IF( imois == 0 ) imois = iman |
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91 | |
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92 | |
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93 | ! -------------------- ! |
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94 | ! First call kt=nit000 ! |
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95 | ! -------------------- ! |
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96 | |
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97 | IF( kt == nit000 ) THEN |
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98 | ntau1 = 0 |
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99 | IF(lwp) WRITE(numout,*) |
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100 | IF(lwp) WRITE(numout,*) ' tau : MONTHLY climatological wind stress (NetCDF files)' |
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101 | IF(lwp) WRITE(numout,*) ' ~~~ ' |
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102 | |
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103 | ! title, dimensions and tests |
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104 | |
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105 | CALL flinopen( cl_taux, mig(1), nlci, mjg(1), nlcj, & ! taux on U-grid |
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106 | .FALSE., ipi , ipj, ipk , & |
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107 | zlon , zlat , zlev , itime, & |
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108 | istep, zdate0, zsecond, numtau ) |
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109 | |
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110 | IF( itime /= jpmonth ) THEN |
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111 | IF(lwp) WRITE(numout,cform_err) |
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112 | IF(lwp) WRITE(numout,*) ' problem with time coordinates in file ', cl_taux |
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113 | IF(lwp) WRITE(numout,*) ' itime = ', itime,' jpmonth = ',jpmonth |
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114 | nstop = nstop + 1 |
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115 | ENDIF |
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116 | IF( ipi /= jpidta .AND. ipj /= jpjdta .AND. ipk /= 1 ) THEN |
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117 | IF(lwp) WRITE(numout,cform_err) |
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118 | IF(lwp) WRITE(numout,*) ' problem with size read in file ', cl_taux |
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119 | IF(lwp) WRITE(numout,*) ' ipi = ',ipi,' jpidta = ',jpidta |
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120 | IF(lwp) WRITE(numout,*) ' ipj = ',ipj,' jpjdta = ',jpjdta |
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121 | IF(lwp) WRITE(numout,*) ' ipk = ',ipk,' must be 1' |
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122 | nstop = nstop + 1 |
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123 | ENDIF |
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124 | |
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125 | CALL flinopen( cl_tauy, mig(1), nlci, mjg(1), nlcj, & ! tauy on V-grid |
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126 | .FALSE., ipi , ipj, ipk , & |
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127 | zlon , zlat , zlev , itime, & |
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128 | istep, zdate0, zsecond, numtav ) |
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129 | |
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130 | IF( itime /= jpmonth ) THEN |
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131 | IF(lwp) WRITE(numout,cform_err) |
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132 | IF(lwp) WRITE(numout,*) ' problem with time coordinates in file ', cl_tauy |
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133 | IF(lwp) WRITE(numout,*) ' itime = ', itime,' jpmonth = ',jpmonth |
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134 | nstop = nstop + 1 |
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135 | ENDIF |
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136 | IF( ipi /= jpidta .AND. ipj /= jpjdta .AND. ipk /= 1) THEN |
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137 | IF(lwp) WRITE(numout,cform_err) |
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138 | IF(lwp) WRITE(numout,*) ' problem with size read in file ', cl_tauy |
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139 | IF(lwp) WRITE(numout,*) ' ipi = ',ipi,' jpidta = ',jpidta |
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140 | IF(lwp) WRITE(numout,*) ' ipj = ',ipj,' jpjdta = ',jpjdta |
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141 | IF(lwp) WRITE(numout,*) ' ipk = ',ipk,' must be 1' |
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142 | nstop = nstop + 1 |
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143 | ENDIF |
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144 | ENDIF |
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145 | |
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146 | ! ----------------- ! |
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147 | ! Read monthly file ! |
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148 | ! ----------------- ! |
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149 | |
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150 | IF( kt == nit000 .OR. imois /= ntau1 ) THEN |
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151 | |
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152 | ! Calendar computation |
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153 | ntau1 = imois ! index of the first record |
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154 | ntau2 = ntau1 + 1 ! index of the last record |
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155 | ntau1 = MOD( ntau1, iman ) |
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156 | IF( ntau1 == 0 ) ntau1 = iman |
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157 | ntau2 = MOD( ntau2, iman ) |
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158 | IF( ntau2 == 0 ) ntau2 = iman |
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159 | IF(lwp) WRITE(numout,*) 'first month used ntau1 = ', ntau1 |
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160 | IF(lwp) WRITE(numout,*) 'last month used ntau2 = ', ntau2 |
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161 | |
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162 | ! Read the corresponding 2 monthly stress data |
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163 | ! ntau1 |
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164 | CALL flinget( numtau,'sozotaux', & ! i-component at U-pt |
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165 | jpidta,jpjdta,1,jpmonth,ntau1, & |
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166 | ntau1,mig(1),nlci,mjg(1),nlcj,taux_dta(1:nlci,1:nlcj,1) ) |
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167 | CALL flinget( numtav,'sometauy', & ! j-component at V-pt |
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168 | jpidta,jpjdta,1,jpmonth,ntau1, & |
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169 | ntau1,mig(1),nlci,mjg(1),nlcj,tauy_dta(1:nlci,1:nlcj,1) ) |
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170 | ! ntau2 |
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171 | CALL flinget( numtau,'sozotaux', & ! i-component at U-pt |
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172 | jpidta,jpjdta,1,jpmonth,ntau2, & |
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173 | ntau2,mig(1),nlci,mjg(1),nlcj,taux_dta(1:nlci,1:nlcj,2) ) |
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174 | CALL flinget( numtav,'sometauy', & ! j-component at V-pt |
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175 | jpidta,jpjdta,1,jpmonth,ntau2, & |
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176 | ntau2,mig(1),nlci,mjg(1),nlcj,tauy_dta(1:nlci,1:nlcj,2) ) |
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177 | |
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178 | IF(lwp .AND. nitend-nit000 <= 100 ) THEN |
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179 | WRITE(numout,*) |
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180 | WRITE(numout,*) ' monthly stress read' |
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181 | WRITE(numout,*) |
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182 | WRITE(numout,*) ' month: ', ntau1, ' taux: 1 multiply by ', 1. |
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183 | CALL prihre( taux_dta(1,1,1), jpi, jpj, 1, jpi, 20, 1, jpj, 10, 1., numout ) |
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184 | WRITE(numout,*) |
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185 | WRITE(numout,*) ' month: ', ntau2, ' tauy: 2 multiply by ', 1. |
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186 | CALL prihre( tauy_dta(1,1,2), jpi, jpj, 1, jpi, 20, 1, jpj, 10, 1., numout ) |
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187 | ENDIF |
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188 | |
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189 | CALL FLUSH(numout) |
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190 | ENDIF |
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191 | |
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192 | ! ------------------------------- ! |
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193 | ! linear time interpolation at kt ! |
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194 | ! ------------------------------- ! |
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195 | |
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196 | ! zxy : coefficient for linear interpolation in time |
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197 | |
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198 | zxy = FLOAT( nday ) / FLOAT( nobis(ntau1) ) + 0.5 - i15 |
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199 | |
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200 | taux(:,:) = (1.-zxy) * taux_dta(:,:,1) + zxy * taux_dta(:,:,2) |
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201 | tauy(:,:) = (1.-zxy) * tauy_dta(:,:,1) + zxy * tauy_dta(:,:,2) |
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202 | |
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203 | ! Save components |
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204 | |
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205 | tauxg(:,:) = taux(:,:) |
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206 | tauyg(:,:) = tauy(:,:) |
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207 | |
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208 | CALL FLUSH(numout) |
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209 | |
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210 | ! ------------------- ! |
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211 | ! Last call kt=nitend ! |
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212 | ! ------------------- ! |
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213 | |
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214 | ! Closing of the 2 files (required in mpp) |
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215 | IF( kt == nitend ) THEN |
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216 | CALL flinclo(numtau) |
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217 | CALL flinclo(numtav) |
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218 | ENDIF |
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219 | |
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220 | END SUBROUTINE tau |
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