[888] | 1 | MODULE sbc_oce |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sbc_oce *** |
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| 4 | !! Surface module : variables defined in core memory |
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| 5 | !!====================================================================== |
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[2528] | 6 | !! History : 3.0 ! 2006-06 (G. Madec) Original code |
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| 7 | !! - ! 2008-08 (G. Madec) namsbc moved from sbcmod |
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| 8 | !! 3.3 ! 2010-04 (M. Leclair, G. Madec) Forcing averaged over 2 time steps |
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| 9 | !! - ! 2010-11 (G. Madec) ice-ocean stress always computed at each ocean time-step |
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| 10 | !! 3.3 ! 2010-10 (J. Chanut, C. Bricaud) add the surface pressure forcing |
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[888] | 11 | !!---------------------------------------------------------------------- |
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| 12 | |
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[2715] | 13 | !!---------------------------------------------------------------------- |
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| 14 | !! sbc_oce_alloc : allocation of sbc arrays |
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| 15 | !! sbc_tau2wnd : wind speed estimated from wind stress |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | USE par_oce ! ocean parameters |
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| 18 | USE in_out_manager ! I/O manager |
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| 19 | USE lib_mpp ! MPP library |
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| 20 | |
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[888] | 21 | IMPLICIT NONE |
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| 22 | PRIVATE |
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[2715] | 23 | |
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| 24 | PUBLIC sbc_oce_alloc ! routine called in sbcmod.F90 |
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| 25 | PUBLIC sbc_tau2wnd ! routine called in several sbc modules |
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[888] | 26 | |
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| 27 | !!---------------------------------------------------------------------- |
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[1218] | 28 | !! Namelist for the Ocean Surface Boundary Condition |
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| 29 | !!---------------------------------------------------------------------- |
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[2715] | 30 | ! !!* namsbc namelist * |
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[1218] | 31 | LOGICAL , PUBLIC :: ln_ana = .FALSE. !: analytical boundary condition flag |
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| 32 | LOGICAL , PUBLIC :: ln_flx = .FALSE. !: flux formulation |
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| 33 | LOGICAL , PUBLIC :: ln_blk_clio = .FALSE. !: CLIO bulk formulation |
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| 34 | LOGICAL , PUBLIC :: ln_blk_core = .FALSE. !: CORE bulk formulation |
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| 35 | LOGICAL , PUBLIC :: ln_cpl = .FALSE. !: coupled formulation (overwritten by key_sbc_coupled ) |
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| 36 | LOGICAL , PUBLIC :: ln_dm2dc = .FALSE. !: Daily mean to Diurnal Cycle short wave (qsr) |
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| 37 | LOGICAL , PUBLIC :: ln_rnf = .FALSE. !: runoffs / runoff mouths |
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| 38 | LOGICAL , PUBLIC :: ln_ssr = .FALSE. !: Sea Surface restoring on SST and/or SSS |
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[2528] | 39 | LOGICAL , PUBLIC :: ln_apr_dyn = .FALSE. !: Atmospheric pressure forcing used on dynamics (ocean & ice) |
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[1218] | 40 | INTEGER , PUBLIC :: nn_ice = 0 !: flag on ice in the surface boundary condition (=0/1/2/3) |
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[1220] | 41 | INTEGER , PUBLIC :: nn_fwb = 0 !: FreshWater Budget: |
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| 42 | ! !: = 0 unchecked |
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| 43 | ! !: = 1 global mean of e-p-r set to zero at each nn_fsbc time step |
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| 44 | ! !: = 2 annual global mean of e-p-r set to zero |
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[1218] | 45 | |
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| 46 | !!---------------------------------------------------------------------- |
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[888] | 47 | !! Ocean Surface Boundary Condition fields |
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| 48 | !!---------------------------------------------------------------------- |
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[2528] | 49 | LOGICAL , PUBLIC :: lhftau = .FALSE. !: HF tau used in TKE: mean(stress module) - module(mean stress) |
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| 50 | !! !! now ! before !! |
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[2715] | 51 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: utau , utau_b !: sea surface i-stress (ocean referential) [N/m2] |
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| 52 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: vtau , vtau_b !: sea surface j-stress (ocean referential) [N/m2] |
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| 53 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: taum !: module of sea surface stress (at T-point) [N/m2] |
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| 54 | !! wndm is used onmpute surface gases exchanges in ice-free ocean or leads |
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| 55 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: wndm !: wind speed module at T-point (=|U10m-Uoce|) [m/s] |
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| 56 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: qsr !: sea heat flux: solar [W/m2] |
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| 57 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: qns , qns_b !: sea heat flux: non solar [W/m2] |
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| 58 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: qsr_tot !: total solar heat flux (over sea and ice) [W/m2] |
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| 59 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: qns_tot !: total non solar heat flux (over sea and ice) [W/m2] |
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| 60 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: emp , emp_b !: freshwater budget: volume flux [Kg/m2/s] |
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| 61 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: emps , emps_b !: freshwater budget: concentration/dillution [Kg/m2/s] |
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| 62 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: emp_tot !: total E-P over ocean and ice [Kg/m2/s] |
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| 63 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: rnf , rnf_b !: river runoff [Kg/m2/s] |
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[2528] | 64 | !! |
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[2715] | 65 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: sbc_tsc, sbc_tsc_b !: sbc content trend [K.m/s] jpi,jpj,jpts |
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| 66 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: qsr_hc , qsr_hc_b !: heat content trend due to qsr flux [K.m/s] jpi,jpj,jpk |
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[2528] | 67 | !! |
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[2715] | 68 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: tprecip !: total precipitation [Kg/m2/s] |
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| 69 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sprecip !: solid precipitation [Kg/m2/s] |
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| 70 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: fr_i !: ice fraction = 1 - lead fraction (between 0 to 1) |
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[1534] | 71 | #if defined key_cpl_carbon_cycle |
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[2715] | 72 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: atm_co2 !: atmospheric pCO2 [ppm] |
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[1534] | 73 | #endif |
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[888] | 74 | |
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| 75 | !!---------------------------------------------------------------------- |
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| 76 | !! Sea Surface Mean fields |
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| 77 | !!---------------------------------------------------------------------- |
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| 78 | INTEGER , PUBLIC :: nn_fsbc !: frequency of sbc computation (as well as sea-ice model) |
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[2715] | 79 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ssu_m !: mean (nn_fsbc time-step) surface sea i-current (U-point) [m/s] |
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| 80 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ssv_m !: mean (nn_fsbc time-step) surface sea j-current (V-point) [m/s] |
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| 81 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sst_m !: mean (nn_fsbc time-step) surface sea temperature [Celsius] |
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| 82 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: sss_m !: mean (nn_fsbc time-step) surface sea salinity [psu] |
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| 83 | REAL(wp), PUBLIC, ALLOCATABLE, SAVE, DIMENSION(:,:) :: ssh_m !: mean (nn_fsbc time-step) sea surface height [m] |
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[888] | 84 | |
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[2715] | 85 | !! * Substitutions |
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| 86 | # include "vectopt_loop_substitute.h90" |
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[888] | 87 | !!---------------------------------------------------------------------- |
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[2715] | 88 | !! NEMO/OPA 4.0 , NEMO Consortium (2011) |
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[2528] | 89 | !! $Id$ |
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| 90 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[2715] | 91 | !!---------------------------------------------------------------------- |
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| 92 | CONTAINS |
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| 93 | |
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| 94 | INTEGER FUNCTION sbc_oce_alloc() |
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| 95 | !!--------------------------------------------------------------------- |
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| 96 | !! *** FUNCTION sbc_oce_alloc *** |
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| 97 | !!--------------------------------------------------------------------- |
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| 98 | INTEGER :: ierr(4) |
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| 99 | !!--------------------------------------------------------------------- |
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| 100 | ierr(:) = 0 |
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| 101 | ! |
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| 102 | ALLOCATE( utau(jpi,jpj) , utau_b(jpi,jpj) , taum(jpi,jpj) , & |
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| 103 | & vtau(jpi,jpj) , vtau_b(jpi,jpj) , wndm(jpi,jpj) , STAT=ierr(1) ) |
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| 104 | ! |
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| 105 | ALLOCATE( qns_tot(jpi,jpj) , qns (jpi,jpj) , qns_b(jpi,jpj), & |
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| 106 | & qsr_tot(jpi,jpj) , qsr (jpi,jpj) , & |
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| 107 | & emp (jpi,jpj) , emp_b (jpi,jpj) , & |
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| 108 | & emps (jpi,jpj) , emps_b(jpi,jpj) , emp_tot(jpi,jpj) , STAT=ierr(2) ) |
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| 109 | ! |
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| 110 | ALLOCATE( rnf (jpi,jpj) , sbc_tsc (jpi,jpj,jpts) , qsr_hc (jpi,jpj,jpk) , & |
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| 111 | & rnf_b(jpi,jpj) , sbc_tsc_b(jpi,jpj,jpts) , qsr_hc_b(jpi,jpj,jpk) , STAT=ierr(3) ) |
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| 112 | ! |
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| 113 | ALLOCATE( tprecip(jpi,jpj) , sprecip(jpi,jpj) , fr_i(jpi,jpj) , & |
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| 114 | #if defined key_cpl_carbon_cycle |
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| 115 | & atm_co2(jpi,jpj) , & |
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| 116 | #endif |
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| 117 | & ssu_m (jpi,jpj) , sst_m(jpi,jpj) , & |
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| 118 | & ssv_m (jpi,jpj) , sss_m (jpi,jpj), ssh_m(jpi,jpj) , STAT=ierr(4) ) |
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| 119 | ! |
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| 120 | sbc_oce_alloc = MAXVAL( ierr ) |
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| 121 | IF( lk_mpp ) CALL mpp_sum ( sbc_oce_alloc ) |
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| 122 | IF( sbc_oce_alloc > 0 ) CALL ctl_warn('sbc_oce_alloc: allocation of arrays failed') |
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| 123 | ! |
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| 124 | END FUNCTION sbc_oce_alloc |
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| 125 | |
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| 126 | |
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| 127 | SUBROUTINE sbc_tau2wnd |
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| 128 | !!--------------------------------------------------------------------- |
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| 129 | !! *** ROUTINE sbc_tau2wnd *** |
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| 130 | !! |
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| 131 | !! ** Purpose : Estimation of wind speed as a function of wind stress |
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| 132 | !! |
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| 133 | !! ** Method : |tau|=rhoa*Cd*|U|^2 |
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| 134 | !!--------------------------------------------------------------------- |
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| 135 | USE dom_oce ! ocean space and time domain |
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| 136 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 137 | REAL(wp) :: zrhoa = 1.22 ! Air density kg/m3 |
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| 138 | REAL(wp) :: zcdrag = 1.5e-3 ! drag coefficient |
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| 139 | REAL(wp) :: ztx, zty, ztau, zcoef ! temporary variables |
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| 140 | INTEGER :: ji, jj ! dummy indices |
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| 141 | !!--------------------------------------------------------------------- |
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| 142 | zcoef = 0.5 / ( zrhoa * zcdrag ) |
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| 143 | !CDIR NOVERRCHK |
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| 144 | DO jj = 2, jpjm1 |
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| 145 | !CDIR NOVERRCHK |
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| 146 | DO ji = fs_2, fs_jpim1 ! vect. opt. |
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| 147 | ztx = utau(ji-1,jj ) + utau(ji,jj) |
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| 148 | zty = vtau(ji ,jj-1) + vtau(ji,jj) |
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| 149 | ztau = SQRT( ztx * ztx + zty * zty ) |
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| 150 | wndm(ji,jj) = SQRT ( ztau * zcoef ) * tmask(ji,jj,1) |
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| 151 | END DO |
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| 152 | END DO |
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| 153 | CALL lbc_lnk( wndm(:,:) , 'T', 1. ) |
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| 154 | ! |
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| 155 | END SUBROUTINE sbc_tau2wnd |
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| 156 | |
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[888] | 157 | !!====================================================================== |
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| 158 | END MODULE sbc_oce |
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