[3] | 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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