| 1 | MODULE ocesbc |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE ocesbc *** |
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| 4 | !! Ocean surface boundary conditions |
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| 5 | !!====================================================================== |
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| 6 | |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! oce_sbc : initialization and namelist read |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | !! * Modules used |
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| 11 | USE oce ! dynamics and tracers variables |
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| 12 | USE dom_oce ! ocean space domain variables |
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| 13 | USE cpl_oce ! coupled ocean-atmosphere variables |
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| 14 | USE ice_oce |
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| 15 | USE blk_oce |
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| 16 | USE flx_oce |
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| 17 | USE phycst ! Define parameters for the routines |
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| 18 | USE taumod |
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| 19 | USE flxmod |
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| 20 | USE flxrnf |
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| 21 | USE tradmp ! damping salinity trend |
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| 22 | USE dtatem |
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| 23 | USE dtasal |
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| 24 | USE ocfzpt |
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| 25 | USE lbclnk |
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| 26 | USE lib_mpp |
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| 27 | USE in_out_manager ! I/O manager |
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| 28 | |
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| 29 | IMPLICIT NONE |
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| 30 | PRIVATE |
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| 31 | |
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| 32 | !! * Accessibility |
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| 33 | PUBLIC oce_sbc ! routine called by step |
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| 34 | |
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| 35 | !! * Shared module variables |
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| 36 | REAL(wp), PUBLIC :: & |
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| 37 | aplus, aminus, & !: |
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| 38 | empold = 0.e0 !: current year freshwater budget correction |
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| 39 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & |
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| 40 | qt , & !: total surface heat flux (w/m2) |
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| 41 | q , & !: surface heat flux (w/m2) |
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| 42 | qsr , & !: solar radiation (w/m2) |
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| 43 | emp , & !: evaporation minus precipitation (kg/m2/s = mm/s) |
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| 44 | emps, & !: evaporation - precipitation (free surface) |
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| 45 | qrp , & !: heat flux damping (w/m2) |
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| 46 | erp !: evaporation damping (kg/m2/s = mm/s) |
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| 47 | #if defined key_dynspg_fsc |
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| 48 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj) :: & !: |
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| 49 | dmp !: internal dampind term |
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| 50 | #endif |
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| 51 | |
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| 52 | # include "domzgr_substitute.h90" |
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| 53 | # include "vectopt_loop_substitute.h90" |
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| 54 | !!---------------------------------------------------------------------- |
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| 55 | !! LIM 2.0 , UCL-LODYC-IPSL (2003) |
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| 56 | !!---------------------------------------------------------------------- |
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| 57 | |
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| 58 | CONTAINS |
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| 59 | |
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| 60 | #if defined key_ice_lim |
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| 61 | !!---------------------------------------------------------------------- |
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| 62 | !! 'key_ice_lim' : LIM sea-ice model |
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| 63 | !!---------------------------------------------------------------------- |
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| 64 | # if defined key_coupled |
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| 65 | !!---------------------------------------------------------------------- |
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| 66 | !! 'key_coupled' : Coupled Ocean/Atmosphere |
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| 67 | !!---------------------------------------------------------------------- |
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| 68 | |
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| 69 | SUBROUTINE oce_sbc( kt ) |
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| 70 | !!--------------------------------------------------------------------- |
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| 71 | !! *** ROUTINE oce_sbc *** |
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| 72 | !! |
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| 73 | !! ** Purpose : Ocean surface boundaries conditions with |
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| 74 | !! Louvain la Neuve Sea Ice Model in coupled mode |
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| 75 | !! |
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| 76 | !! History : |
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| 77 | !! 1.0 ! 00-10 (O. Marti) Original code |
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| 78 | !! 2.0 ! 02-12 (G. Madec) F90: Free form and module |
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| 79 | !!---------------------------------------------------------------------- |
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| 80 | !! * Local declarations |
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| 81 | INTEGER :: ji, jj ! dummy loop indices |
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| 82 | REAL(wp) :: ztx, ztaux, zty, ztauy, ztrp, zsrp |
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| 83 | REAL(wp) :: ztdta, ztgel, zqrp |
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| 84 | !!---------------------------------------------------------------------- |
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| 85 | |
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| 86 | ! 1. initialization to zero at kt = nit000 |
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| 87 | ! --------------------------------------- |
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| 88 | |
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| 89 | IF( kt == nit000 ) THEN |
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| 90 | qsr (:,:) = 0.e0 |
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| 91 | freeze(:,:) = 0.e0 |
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| 92 | qt (:,:) = 0.e0 |
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| 93 | q (:,:) = 0.e0 |
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| 94 | qrp (:,:) = 0.e0 |
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| 95 | emp (:,:) = 0.e0 |
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| 96 | emps (:,:) = 0.e0 |
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| 97 | erp (:,:) = 0.e0 |
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| 98 | #if defined key_dynspg_fsc |
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| 99 | dmp (:,:) = 0.e0 |
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| 100 | #endif |
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| 101 | ENDIF |
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| 102 | |
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| 103 | IF( MOD( kt-1, nfice ) == 0 ) THEN |
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| 104 | |
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| 105 | CALL oce_sbc_dmp ! Computation of internal and evaporation damping terms |
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| 106 | |
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| 107 | ! Surface heat flux (W/m2) |
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| 108 | ! ----------------------- |
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| 109 | |
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| 110 | ! restoring heat flux |
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| 111 | DO jj = 1, jpj |
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| 112 | DO ji = 1, jpi |
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| 113 | ztgel = fzptn(ji,jj) |
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| 114 | #if defined key_dtasst |
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| 115 | ztdta = MAX( sst(ji,jj), ztgel ) |
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| 116 | #else |
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| 117 | ztdta = MAX( t_dta(ji,jj,1), ztgel ) |
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| 118 | #endif |
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| 119 | zqrp = ztrp * ( tb(ji,jj,1) - ztdta ) |
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| 120 | |
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| 121 | qrp(ji,jj) = (1.0-freeze(ji,jj) ) * zqrp |
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| 122 | END DO |
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| 123 | END DO |
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| 124 | |
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| 125 | ! non solar heat flux + solar flux + restoring |
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| 126 | q (:,:) = fnsolar(:,:) + fsolar(:,:) + qrp(:,:) |
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| 127 | qt (:,:) = q(:,:) |
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| 128 | |
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| 129 | ! solar flux |
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| 130 | qsr(:,:) = fsolar(:,:) |
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| 131 | |
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| 132 | #if defined key_dynspg_fsc |
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| 133 | ! total concentration/dilution effect (use on SSS) |
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| 134 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) |
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| 135 | |
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| 136 | ! total volume flux (use on sea-surface height) |
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| 137 | emp (:,:) = fmass(:,:) - dmp(:,:) + runoff(:,:) + erp(:,:) |
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| 138 | #else |
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| 139 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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| 140 | ! freshwater flux |
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| 141 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) |
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| 142 | emp (:,:) = emps(:,:) |
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| 143 | #endif |
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| 144 | |
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| 145 | DO jj = 1, jpjm1 |
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| 146 | DO ji = 1, fs_jpim1 ! vertor opt. |
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| 147 | ztx = 0.5 * ( freeze(ji+1,jj) + freeze(ji+1,jj+1) ) |
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| 148 | ztaux = 0.5 * ( ftaux (ji+1,jj) + ftaux (ji+1,jj+1) ) |
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| 149 | taux(ji,jj) = (1.0-ztx) * taux(ji,jj) + ztx * ztaux |
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| 150 | |
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| 151 | zty = 0.5 * ( freeze(ji,jj+1) + freeze(ji+1,jj+1) ) |
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| 152 | ztauy = 0.5 * ( ftauy (ji,jj+1) + ftauy (ji+1,jj+1) ) |
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| 153 | tauy(ji,jj) = (1.0-zty) * tauy(ji,jj) + zty * ztauy |
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| 154 | END DO |
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| 155 | END DO |
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| 156 | CALL lbc_lnk( taux, 'U', -1. ) |
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| 157 | CALL lbc_lnk( tauy, 'V', -1. ) |
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| 158 | |
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| 159 | ! Re-initialization of fluxes |
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| 160 | sst_io(:,:) = 0.0 |
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| 161 | sss_io(:,:) = 0.0 |
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| 162 | u_io (:,:) = 0.0 |
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| 163 | v_io (:,:) = 0.0 |
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| 164 | gtaux (:,:) = 0. |
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| 165 | gtauy (:,:) = 0. |
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| 166 | |
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| 167 | ENDIF |
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| 168 | |
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| 169 | END SUBROUTINE oce_sbc |
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| 170 | |
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| 171 | # elif defined key_flx_bulk_monthly || defined key_flx_bulk_daily |
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| 172 | !!---------------------------------------------------------------------- |
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| 173 | !! 'key_ice_lim' with LIM sea-ice model |
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| 174 | !!---------------------------------------------------------------------- |
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| 175 | |
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| 176 | SUBROUTINE oce_sbc( kt ) |
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| 177 | !!--------------------------------------------------------------------- |
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| 178 | !! *** ROUTINE oce_sbc *** |
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| 179 | !! |
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| 180 | !! ** Purpose : - Ocean surface boundary conditions with LIM sea-ice |
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| 181 | !! model in forced mode using bulk formulea |
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| 182 | !! |
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| 183 | !! History : |
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| 184 | !! 1.0 ! 99-11 (M. Imbard) Original code |
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| 185 | !! ! 01-03 (D. Ludicone, E. Durand, G. Madec) free surf. |
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| 186 | !! 2.0 ! 02-09 (G. Madec, C. Ethe) F90: Free form and module |
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| 187 | !!---------------------------------------------------------------------- |
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| 188 | !! * arguments |
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| 189 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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| 190 | |
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| 191 | !! * Local declarations |
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| 192 | INTEGER :: ji, jj ! dummy loop indices |
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| 193 | REAL(wp) :: ztx, ztaux, zty, ztauy |
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| 194 | !!---------------------------------------------------------------------- |
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| 195 | |
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| 196 | ! 1. initialization to zero at kt = nit000 |
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| 197 | ! --------------------------------------- |
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| 198 | |
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| 199 | IF( kt == nit000 ) THEN |
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| 200 | qsr (:,:) = 0.e0 |
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| 201 | qt (:,:) = 0.e0 |
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| 202 | q (:,:) = 0.e0 |
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| 203 | qrp (:,:) = 0.e0 |
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| 204 | emp (:,:) = 0.e0 |
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| 205 | emps (:,:) = 0.e0 |
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| 206 | erp (:,:) = 0.e0 |
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| 207 | #if defined key_dynspg_fsc |
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| 208 | dmp (:,:) = 0.e0 |
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| 209 | #endif |
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| 210 | ENDIF |
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| 211 | |
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| 212 | IF( MOD( kt-1, nfice ) == 0 ) THEN |
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| 213 | |
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| 214 | CALL oce_sbc_dmp ! Computation of internal and evaporation damping terms |
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| 215 | |
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| 216 | ! Surface Ocean fluxes |
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| 217 | ! ==================== |
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| 218 | |
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| 219 | ! Surface heat flux (W/m2) |
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| 220 | ! ----------------- |
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| 221 | |
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| 222 | q (:,:) = fnsolar(:,:) + fsolar(:,:) ! non solar heat flux + solar flux |
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| 223 | qt (:,:) = q(:,:) |
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| 224 | qsr (:,:) = fsolar(:,:) ! solar flux |
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| 225 | |
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| 226 | #if defined key_dynspg_fsc |
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| 227 | ! total concentration/dilution effect (use on SSS) |
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| 228 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) + empold |
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| 229 | |
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| 230 | ! total volume flux (use on sea-surface height) |
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| 231 | emp (:,:) = fmass(:,:) - dmp(:,:) + runoff(:,:) + erp(:,:) + empold |
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| 232 | #else |
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| 233 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
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| 234 | emps(:,:) = fmass(:,:) + fsalt(:,:) + runoff(:,:) + erp(:,:) ! freshwater flux |
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| 235 | emp (:,:) = emps(:,:) |
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| 236 | |
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| 237 | #endif |
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| 238 | |
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| 239 | ! Surface stress |
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| 240 | ! -------------- |
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| 241 | |
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| 242 | ! update the stress beloww sea-ice area |
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| 243 | DO jj = 1, jpjm1 |
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| 244 | DO ji = 1, fs_jpim1 ! vertor opt. |
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| 245 | ztx = MAX( freezn(ji,jj), freezn(ji,jj+1) ) ! ice/ocean indicator at U- and V-points |
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| 246 | zty = MAX( freezn(ji,jj), freezn(ji+1,jj) ) |
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| 247 | ztaux = 0.5 *( ftaux(ji+1,jj) + ftaux(ji+1,jj+1) ) ! ice-ocean stress at U- and V-points |
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| 248 | ztauy = 0.5 *( ftauy(ji,jj+1) + ftauy(ji+1,jj+1) ) |
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| 249 | taux(ji,jj) = (1.-ztx) * taux(ji,jj) + ztx * ztaux ! stress at the ocean surface |
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| 250 | tauy(ji,jj) = (1.-zty) * tauy(ji,jj) + zty * ztauy |
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| 251 | END DO |
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| 252 | END DO |
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| 253 | |
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| 254 | ! boundary condition on the stress (taux,tauy) |
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| 255 | CALL lbc_lnk( taux, 'U', -1. ) |
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| 256 | CALL lbc_lnk( tauy, 'V', -1. ) |
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| 257 | |
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| 258 | ! Re-initialization of fluxes |
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| 259 | sst_io(:,:) = 0.0 |
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| 260 | sss_io(:,:) = 0.0 |
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| 261 | u_io (:,:) = 0.0 |
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| 262 | v_io (:,:) = 0.0 |
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| 263 | |
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| 264 | ENDIF |
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| 265 | |
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| 266 | END SUBROUTINE oce_sbc |
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| 267 | |
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| 268 | # else |
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| 269 | !!---------------------------------------------------------------------- |
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| 270 | !! Error option LIM sea-ice model requires bulk formulea |
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| 271 | !!---------------------------------------------------------------------- |
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| 272 | This line forced a compilation error |
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| 273 | # endif |
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| 274 | |
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| 275 | #else |
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| 276 | !!---------------------------------------------------------------------- |
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| 277 | !! Default option NO LIM sea-ice model |
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| 278 | !!---------------------------------------------------------------------- |
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| 279 | # if defined key_coupled |
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| 280 | !!---------------------------------------------------------------------- |
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| 281 | !! 'key_coupled' : Coupled Ocean/Atmosphere |
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| 282 | !!---------------------------------------------------------------------- |
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| 283 | |
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| 284 | SUBROUTINE oce_sbc( kt ) |
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| 285 | !!--------------------------------------------------------------------- |
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| 286 | !! *** ROUTINE oce_sbc *** |
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| 287 | !! |
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| 288 | !! ** Purpose : Ocean surface boundaries conditions in |
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| 289 | !! coupled ocean/atmosphere case without sea-ice |
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| 290 | !! |
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| 291 | !! History : |
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| 292 | !! 1.0 ! 00-10 (O. Marti) Original code |
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| 293 | !! 2.0 ! 02-12 (G. Madec) F90: Free form and module |
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| 294 | !!---------------------------------------------------------------------- |
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| 295 | !! * Modules used |
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| 296 | USE cpl_oce |
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| 297 | |
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| 298 | !! * Arguments |
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| 299 | INTEGER, INTENT( in ) :: kt ! ocean time step index |
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| 300 | |
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| 301 | !! * Local declarations |
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| 302 | INTEGER :: ji, jj, jf ! dummy loop indices |
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| 303 | REAL(wp) :: ztrp, ztgel, & ! temporary scalars |
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| 304 | zice, zhemis, zqrp, zqri, & ! " " |
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| 305 | zq, zqi, zerp, ze, zei, zro ! " " |
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| 306 | !!---------------------------------------------------------------------- |
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| 307 | |
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| 308 | ! Compute fluxes |
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| 309 | ! -------------- |
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| 310 | |
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| 311 | ! constant initialization |
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| 312 | ztrp = -40. ! restoring term for temperature (w/m2/k) |
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| 313 | |
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| 314 | DO jj = 1, jpj |
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| 315 | DO ji = 1, jpi |
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| 316 | |
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| 317 | ztgel = fzptn(ji,jj) ! local freezing temperature |
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| 318 | |
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| 319 | ! opa model ice freeze() |
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| 320 | |
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| 321 | zice = tmask(ji,jj,1) |
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| 322 | IF( tn(ji,jj,1) >= ztgel ) zice = 0. |
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| 323 | freeze(ji,jj) = zice |
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| 324 | |
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| 325 | ! hemisphere indicator (=1 north, =-1 south) |
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| 326 | |
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| 327 | zhemis = float(isign(1, mjg(jj)-(jpjglo/2+1))) |
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| 328 | |
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| 329 | ! a) net downward radiative flux qsr() |
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| 330 | ! - AGCM qsrc if no ice |
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| 331 | ! - zero under ice (zice=1) |
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| 332 | |
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| 333 | qsr(ji,jj) = (1.-zice)*qsrc(ji,jj)*tmask(ji,jj,1) |
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| 334 | |
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| 335 | ! b) heat flux damping term qrp() |
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| 336 | ! - no damping if no ice (zice=0) |
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| 337 | ! - gamma*min(0,t-tgel) if ice (zice=1) |
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| 338 | |
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| 339 | zqrp = 0. |
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| 340 | zqri = ztrp*MIN( 0., tb(ji,jj,1)-ztgel ) |
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| 341 | qrp(ji,jj) = ( ( 1. - zice ) * zqrp + zice * zqri ) * tmask(ji,jj,1) |
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| 342 | |
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| 343 | |
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| 344 | ! c) net downward heat flux q() = q0 + qrp() |
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| 345 | ! for q0 |
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| 346 | ! - AGCM qc if no ice (zice=0) |
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| 347 | ! - -2 watt/m2 (arctic) or -4 watt/m2 (antarctic) if ice (zice=1) |
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| 348 | zq = qc(ji,jj) |
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| 349 | zqi = -3. + zhemis |
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| 350 | qt(ji,jj) = ( (1.-zice) * zq + zice * zqi ) * tmask(ji,jj,1) + qrp(ji,jj) |
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| 351 | q (ji,jj) = qt(ji,jj) |
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| 352 | |
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| 353 | ! d) water flux damping term erp() |
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| 354 | ! - no damping |
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| 355 | zerp = 0. |
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| 356 | erp(ji,jj) = zerp |
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| 357 | |
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| 358 | ! e) net upward water flux e() = eo + runoff() + erp() |
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| 359 | ! for e0 |
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| 360 | ! - AGCM if no ice (zice=0) |
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| 361 | ! - 1.mm/day if climatological and opa ice (zice=1) |
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| 362 | ze = ec(ji,jj) |
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| 363 | zei = 1./rday |
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| 364 | zro = runoff(ji,jj) |
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| 365 | emp(ji,jj) = ( ( 1. - zice ) * ze + zice * zei + zro ) * tmask(ji,jj,1) + erp(ji,jj) |
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| 366 | |
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| 367 | END DO |
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| 368 | END DO |
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| 369 | |
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| 370 | END SUBROUTINE oce_sbc |
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| 371 | |
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| 372 | # elif defined key_flx_bulk_monthly || defined key_flx_bulk_daily || defined key_flx_forced_daily |
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| 373 | !!------------------------------------------------------------------------- |
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| 374 | !! 'key_flx_bulk_monthly' or 'key_flx_bulk_daily' or bulk formulea |
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| 375 | !! 'key_flx_forced_daily' or no bulk case |
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| 376 | !!------------------------------------------------------------------------- |
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| 377 | |
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| 378 | SUBROUTINE oce_sbc( kt ) |
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| 379 | !!--------------------------------------------------------------------- |
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| 380 | !! *** ROUTINE oce_sbc *** |
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| 381 | !! |
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| 382 | !! ** Purpose : Ocean surface boundary conditions in forced mode |
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| 383 | !! using either flux or bulk formulation. |
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| 384 | !! |
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| 385 | !! History : |
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| 386 | !! 1.0 ! 99-11 (M. Imbard) Original code |
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| 387 | !! ! 01-03 (D. Ludicone, E. Durand, G. Madec) free surf. |
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| 388 | !! 2.0 ! 02-09 (G. Madec, C. Ethe) F90: Free form and module |
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| 389 | !!---------------------------------------------------------------------- |
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| 390 | !! * Modules used |
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| 391 | USE daymod |
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| 392 | #if ! defined key_dtasst |
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| 393 | USE dtasst, ONLY : rclice |
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| 394 | #endif |
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| 395 | #if defined key_flx_bulk_monthly || defined key_flx_bulk_daily |
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| 396 | USE blk_oce |
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| 397 | #endif |
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| 398 | #if defined key_flx_forced_daily |
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| 399 | USE flx_oce |
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| 400 | #endif |
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| 401 | |
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| 402 | !! * arguments |
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| 403 | INTEGER, INTENT( in ) :: kt ! ocean time step |
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| 404 | |
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| 405 | !! * local declarations |
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| 406 | INTEGER :: ji, jj ! dummy loop arguments |
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| 407 | INTEGER :: i15, ifreq ! |
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| 408 | REAL(wp) :: zxy |
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| 409 | REAL(wp) :: zsice, zqri, zqrp, ztdta, zqrj |
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| 410 | REAL(wp) :: zq, zqi, zhemis, ztrp |
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| 411 | REAL(wp), DIMENSION(jpi,jpj) :: zeri, zerps, ziclim |
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| 412 | REAL(wp), DIMENSION(jpi,jpj) :: zqt, zqsr, zemp |
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| 413 | !!---------------------------------------------------------------------- |
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| 414 | |
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| 415 | ! 1. initialization to zero at kt = nit000 |
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| 416 | ! --------------------------------------- |
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| 417 | |
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| 418 | IF( kt == nit000 ) THEN |
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| 419 | qsr (:,:) = 0.e0 |
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| 420 | freeze (:,:) = 0.e0 |
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| 421 | qt (:,:) = 0.e0 |
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| 422 | q (:,:) = 0.e0 |
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| 423 | qrp (:,:) = 0.e0 |
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| 424 | emp (:,:) = 0.e0 |
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| 425 | emps (:,:) = 0.e0 |
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| 426 | erp (:,:) = 0.e0 |
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| 427 | #if defined key_dynspg_fsc |
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| 428 | dmp (:,:) = 0.e0 |
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| 429 | #endif |
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| 430 | ENDIF |
|---|
| 431 | |
|---|
| 432 | #if defined key_flx_bulk_monthly || defined key_flx_bulk_daily |
|---|
| 433 | ifreq = nfbulk |
|---|
| 434 | zqt (:,:) = qsr_oce(:,:) + qnsr_oce(:,:) |
|---|
| 435 | zqsr(:,:) = qsr_oce(:,:) |
|---|
| 436 | zemp(:,:) = evap(:,:) - tprecip(:,:) |
|---|
| 437 | #endif |
|---|
| 438 | |
|---|
| 439 | #if defined key_flx_forced_daily |
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| 440 | ifreq = 1 |
|---|
| 441 | zqt (:,:) = p_qt (:,:) |
|---|
| 442 | zqsr(:,:) = p_qsr(:,:) |
|---|
| 443 | zemp(:,:) = p_emp(:,:) |
|---|
| 444 | #endif |
|---|
| 445 | |
|---|
| 446 | IF( MOD( kt-1, ifreq) == 0 ) THEN |
|---|
| 447 | ! Computation of internal and evaporation damping terms |
|---|
| 448 | CALL oce_sbc_dmp |
|---|
| 449 | |
|---|
| 450 | ztrp = -40. ! restoring terme for temperature (w/m2/k) |
|---|
| 451 | zsice = - 0.04 / 0.8 ! ratio of isohaline compressibility over isotherme compressibility |
|---|
| 452 | ! ( d rho / dt ) / ( d rho / ds ) ( s = 34, t = -1.8 ) |
|---|
| 453 | ! Flux computation |
|---|
| 454 | DO jj = 1, jpj |
|---|
| 455 | DO ji = 1, jpi |
|---|
| 456 | ! climatological ice |
|---|
| 457 | #if defined key_dtasst |
|---|
| 458 | ziclim(ji,jj) = FLOAT( NINT( rclice(ji,jj,1) ) ) |
|---|
| 459 | #else |
|---|
| 460 | ! tested only with key key_dtasst (A. Lazar 07/2001) |
|---|
| 461 | ! this loop in CASE of interpolation of monthly rclice |
|---|
| 462 | i15 = INT( 2.* FLOAT(nday) / (FLOAT( nobis(nmonth) ) + 0.5) ) |
|---|
| 463 | zxy = FLOAT(nday) / FLOAT(nobis(nmonth)) + 0.5 - i15 |
|---|
| 464 | ziclim(ji,jj) = FLOAT( NINT( (1-zxy) * rclice(ji,jj,1) + zxy * rclice(ji,jj,2) ) ) |
|---|
| 465 | #endif |
|---|
| 466 | |
|---|
| 467 | ! avoid surfreezing point |
|---|
| 468 | tn(ji,jj,1) = MAX( tn(ji,jj,1), fzptn(ji,jj) ) |
|---|
| 469 | |
|---|
| 470 | ! hemisphere indicator (=1 north, =-1 south) |
|---|
| 471 | zhemis = FLOAT( isign(1, mjg(jj) - (jpjdta/2+1) ) ) |
|---|
| 472 | |
|---|
| 473 | ! restoring temperature (ztdta >= to local freezing temperature) |
|---|
| 474 | #if defined key_dtasst |
|---|
| 475 | ztdta = MAX( sst(ji,jj), fzptn(ji,jj) ) |
|---|
| 476 | #else |
|---|
| 477 | ztdta = MAX( t_dta(ji,jj,1), fzptn(ji,jj) ) |
|---|
| 478 | #endif |
|---|
| 479 | |
|---|
| 480 | ! a) net downward radiative flux qsr() |
|---|
| 481 | qsr(ji,jj) = zqsr(ji,jj) * tmask(ji,jj,1) |
|---|
| 482 | |
|---|
| 483 | ! b) heat flux damping term qrp() |
|---|
| 484 | ! - gamma*(t-tlevitus) if no climatological ice (ziclim=0) |
|---|
| 485 | ! - gamma*(t-(tgel-1.)) if climatological ice and no opa ice (ziclim=1 zicopa=0) |
|---|
| 486 | ! - gamma*min(0,t-tgel) if climatological and opa ice (ziclim=1 zicopa=1) |
|---|
| 487 | |
|---|
| 488 | zqrp = ztrp * ( tb(ji,jj,1) - ztdta ) |
|---|
| 489 | zqri = ztrp * ( tb(ji,jj,1) - ( fzptn(ji,jj) - 1.) ) |
|---|
| 490 | zqrj = ztrp * MIN( 0., tb(ji,jj,1) - fzptn(ji,jj) ) |
|---|
| 491 | qrp(ji,jj) = ( (1. - ziclim(ji,jj)) * zqrp & |
|---|
| 492 | + ziclim(ji,jj) * ( ( 1 - freeze(ji,jj)) * zqri & |
|---|
| 493 | + freeze(ji,jj) * zqrj ) ) * tmask(ji,jj,1) |
|---|
| 494 | |
|---|
| 495 | ! c) net downward heat flux q() = q0 + qrp() |
|---|
| 496 | ! for q0 |
|---|
| 497 | ! - ECMWF fluxes if no climatological ice (ziclim=0) |
|---|
| 498 | ! - qrp if climatological ice and no opa ice (ziclim=1 zicopa=0) |
|---|
| 499 | ! - -2 watt/m2 (arctic) or -4 watt/m2 (antarctic) if climatological and opa ice |
|---|
| 500 | ! (ziclim=1 zicopa=1) |
|---|
| 501 | zq = zqt(ji,jj) |
|---|
| 502 | zqi = -3. + zhemis |
|---|
| 503 | qt (ji,jj) = ( (1.-ziclim(ji,jj)) * zq & |
|---|
| 504 | +ziclim(ji,jj) * freeze(ji,jj) * zqi ) & |
|---|
| 505 | * tmask(ji,jj,1) & |
|---|
| 506 | + qrp(ji,jj) |
|---|
| 507 | q (ji,jj) = qt (ji,jj) |
|---|
| 508 | |
|---|
| 509 | END DO |
|---|
| 510 | END DO |
|---|
| 511 | |
|---|
| 512 | #if defined key_dynspg_fsc |
|---|
| 513 | ! Free-surface |
|---|
| 514 | |
|---|
| 515 | ! Water flux for zero buoyancy flux if no opa ice and ice clim |
|---|
| 516 | zeri(:,:) = -zsice * qrp(:,:) * ro0cpr * rauw / 34.0 |
|---|
| 517 | zerps(:,:) = ziclim(:,:) * ( (1-freeze(:,:)) * zeri(:,:) ) |
|---|
| 518 | |
|---|
| 519 | ! Contribution to sea level: |
|---|
| 520 | ! net upward water flux emp() = e-p + runoff() + erp() + dmp + empold |
|---|
| 521 | emp (:,:) = zemp(:,:) & ! e-p data |
|---|
| 522 | & + runoff(:,:) & ! runoff data |
|---|
| 523 | & + erp(:,:) & ! restoring term to SSS data |
|---|
| 524 | & + dmp(:,:) & ! freshwater flux associated with internal damping |
|---|
| 525 | & + empold ! domain averaged annual mean correction |
|---|
| 526 | |
|---|
| 527 | ! Contribution to salinity: |
|---|
| 528 | ! net upward water flux emps() = e-p + runoff() + erp() + zerps + empold |
|---|
| 529 | emps(:,:) = zemp(:,:) & |
|---|
| 530 | & + runoff(:,:) & |
|---|
| 531 | & + erp(:,:) & |
|---|
| 532 | & + zerps(:,:) & |
|---|
| 533 | & + empold |
|---|
| 534 | #else |
|---|
| 535 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
|---|
| 536 | ! freshwater flux |
|---|
| 537 | zeri(:,:) = -zsice * qrp(:,:) * ro0cpr * rauw / 34.0 |
|---|
| 538 | zerps(:,:) = ziclim(:,:) * ( (1-freeze(:,:)) * zeri(:,:) ) |
|---|
| 539 | emps (:,:) = zemp(:,:) & |
|---|
| 540 | & + runoff(:,:) & |
|---|
| 541 | & + erp(:,:) & |
|---|
| 542 | & + zerps(:,:) |
|---|
| 543 | emp (:,:) = emps(:,:) |
|---|
| 544 | #endif |
|---|
| 545 | |
|---|
| 546 | ! Boundary condition on emp for free surface option |
|---|
| 547 | ! ------------------------------------------------- |
|---|
| 548 | CALL lbc_lnk( emp, 'T', 1. ) |
|---|
| 549 | |
|---|
| 550 | ENDIF |
|---|
| 551 | |
|---|
| 552 | END SUBROUTINE oce_sbc |
|---|
| 553 | |
|---|
| 554 | # else |
|---|
| 555 | !!---------------------------------------------------------------------- |
|---|
| 556 | !! Default option : Analytical forcing |
|---|
| 557 | !!---------------------------------------------------------------------- |
|---|
| 558 | |
|---|
| 559 | SUBROUTINE oce_sbc( kt ) |
|---|
| 560 | !!--------------------------------------------------------------------- |
|---|
| 561 | !! *** ROUTINE oce_sbc *** |
|---|
| 562 | !! |
|---|
| 563 | !! ** Purpose : provide the thermohaline fluxes (heat and freshwater) |
|---|
| 564 | !! to the ocean at each time step. |
|---|
| 565 | !! |
|---|
| 566 | !! ** Method : Constant surface fluxes (read in namelist (namflx)) |
|---|
| 567 | !! |
|---|
| 568 | !! ** Action : - q, qt, qsr, emp, emps, qrp, erp |
|---|
| 569 | !! |
|---|
| 570 | !! History : |
|---|
| 571 | !! ! 91-03 () Original code |
|---|
| 572 | !! 8.5 ! 02-09 (G. Madec) F90: Free form and module |
|---|
| 573 | !!---------------------------------------------------------------------- |
|---|
| 574 | !! * Modules used |
|---|
| 575 | USE flxrnf ! ocean runoffs |
|---|
| 576 | |
|---|
| 577 | !! * arguments |
|---|
| 578 | INTEGER, INTENT( in ) :: kt ! ocean time step |
|---|
| 579 | |
|---|
| 580 | !! * local declarations |
|---|
| 581 | REAL(wp) :: & !!! surface fluxes namelist (namflx) |
|---|
| 582 | q0 = 0.e0, & ! net heat flux |
|---|
| 583 | qsr0 = 0.e0, & ! solar heat flux |
|---|
| 584 | emp0 = 0.e0 ! net freshwater flux |
|---|
| 585 | |
|---|
| 586 | NAMELIST/namflx/ q0, qsr0, emp0 |
|---|
| 587 | !!--------------------------------------------------------------------- |
|---|
| 588 | |
|---|
| 589 | IF( kt == nit000 ) THEN |
|---|
| 590 | |
|---|
| 591 | ! Read Namelist namflx : surface thermohaline fluxes |
|---|
| 592 | ! -------------------- |
|---|
| 593 | REWIND ( numnam ) |
|---|
| 594 | READ ( numnam, namflx ) |
|---|
| 595 | |
|---|
| 596 | IF(lwp) WRITE(numout,*)' ' |
|---|
| 597 | IF(lwp) WRITE(numout,*)' ocesbc : Constant surface fluxes read in namelist' |
|---|
| 598 | IF(lwp) WRITE(numout,*)' ~~~~~~~ ' |
|---|
| 599 | IF(lwp) WRITE(numout,*)' Namelist namflx: set the constant flux values' |
|---|
| 600 | IF(lwp) WRITE(numout,*)' net heat flux q0 = ', q0 , ' W/m2' |
|---|
| 601 | IF(lwp) WRITE(numout,*)' solar heat flux qsr0 = ', qsr0, ' W/m2' |
|---|
| 602 | IF(lwp) WRITE(numout,*)' net heat flux emp0 = ', emp0, ' W/m2' |
|---|
| 603 | |
|---|
| 604 | qt (:,:) = q0 |
|---|
| 605 | qsr (:,:) = qsr0 |
|---|
| 606 | q (:,:) = q0 |
|---|
| 607 | emp (:,:) = emp0 |
|---|
| 608 | emps (:,:) = emp0 |
|---|
| 609 | qrp (:,:) = 0.e0 |
|---|
| 610 | erp (:,:) = 0.e0 |
|---|
| 611 | |
|---|
| 612 | runoff(:,:) = 0.e0 |
|---|
| 613 | ENDIF |
|---|
| 614 | |
|---|
| 615 | END SUBROUTINE oce_sbc |
|---|
| 616 | |
|---|
| 617 | # endif |
|---|
| 618 | #endif |
|---|
| 619 | |
|---|
| 620 | #if defined key_dtasal |
|---|
| 621 | !!---------------------------------------------------------------------- |
|---|
| 622 | !! 'key_dtasal' salinity data |
|---|
| 623 | !!---------------------------------------------------------------------- |
|---|
| 624 | SUBROUTINE oce_sbc_dmp |
|---|
| 625 | !!--------------------------------------------------------------------- |
|---|
| 626 | !! *** ROUTINE oce_sbc_dmp *** |
|---|
| 627 | !! |
|---|
| 628 | !! ** Purpose : Computation of internal and evaporation damping terms |
|---|
| 629 | !! for ocean surface boundary conditions |
|---|
| 630 | !! |
|---|
| 631 | !! History : |
|---|
| 632 | !! 9.0 ! 04-01 (G. Madec, C. Ethe) Original code |
|---|
| 633 | !!---------------------------------------------------------------------- |
|---|
| 634 | !! * Local declarations |
|---|
| 635 | INTEGER :: ji, jj ! dummy loop indices |
|---|
| 636 | REAL(wp), DIMENSION(jpi,jpj) :: zsss, zfreeze |
|---|
| 637 | REAL(wp) :: zerp, ztrp, zsrp |
|---|
| 638 | #if defined key_dynspg_fsc |
|---|
| 639 | REAL(wp) :: zwei |
|---|
| 640 | REAL(wp) :: zerpplus(jpi,jpj), zerpminus(jpi,jpj) |
|---|
| 641 | REAL(wp) :: zplus, zminus, zadefi |
|---|
| 642 | # if defined key_tradmp |
|---|
| 643 | INTEGER jk |
|---|
| 644 | REAL(wp), DIMENSION(jpi,jpj) :: zstrdmp |
|---|
| 645 | # endif |
|---|
| 646 | #endif |
|---|
| 647 | !!---------------------------------------------------------------------- |
|---|
| 648 | |
|---|
| 649 | #if defined key_ice_lim |
|---|
| 650 | ! sea ice indicator (1 or 0) |
|---|
| 651 | DO jj = 1, jpj |
|---|
| 652 | DO ji = 1, jpi |
|---|
| 653 | freezn(ji,jj) = MAX(0., SIGN(1., freeze(ji,jj)-rsmall)) |
|---|
| 654 | END DO |
|---|
| 655 | END DO |
|---|
| 656 | zsss (:,:) = sss_io(:,:) |
|---|
| 657 | zfreeze(:,:) = freezn(:,:) |
|---|
| 658 | #else |
|---|
| 659 | zsss (:,:) = sn (:,:,1) |
|---|
| 660 | zfreeze(:,:) = freeze(:,:) |
|---|
| 661 | #endif |
|---|
| 662 | |
|---|
| 663 | ! Initialisation |
|---|
| 664 | ! -------------- |
|---|
| 665 | ! Restoring coefficients on SST and SSS |
|---|
| 666 | IF( lk_cpl ) THEN |
|---|
| 667 | ztrp = 0.e0 |
|---|
| 668 | zsrp = 0.e0 |
|---|
| 669 | ELSE |
|---|
| 670 | ztrp = -40. ! (W/m2/K) |
|---|
| 671 | zsrp = ztrp * ro0cpr * rauw ! (Kg/m2/s2) |
|---|
| 672 | ENDIF |
|---|
| 673 | |
|---|
| 674 | #if defined key_dynspg_fsc |
|---|
| 675 | ! Free-surface |
|---|
| 676 | |
|---|
| 677 | ! Internal damping |
|---|
| 678 | # if defined key_tradmp |
|---|
| 679 | ! Vertical mean of dampind trend (computed in tradmp module) |
|---|
| 680 | zstrdmp(:,:) = 0.e0 |
|---|
| 681 | DO jk = 1, jpk |
|---|
| 682 | zstrdmp(:,:) = zstrdmp(:,:) + strdmp(:,:,jk) * fse3t(:,:,jk) |
|---|
| 683 | END DO |
|---|
| 684 | ! volume flux associated to internal damping to climatology |
|---|
| 685 | dmp(:,:) = zstrdmp(:,:) * rauw / ( zsss(:,:) + rsmall ) |
|---|
| 686 | # else |
|---|
| 687 | dmp(:,:) = 0.e0 ! No internal damping |
|---|
| 688 | # endif |
|---|
| 689 | |
|---|
| 690 | ! evaporation damping term ( Surface restoring ) |
|---|
| 691 | zerpplus (:,:) = 0.e0 |
|---|
| 692 | zerpminus(:,:) = 0.e0 |
|---|
| 693 | zplus = 15. / rday |
|---|
| 694 | zminus = -15. / rday |
|---|
| 695 | |
|---|
| 696 | DO jj = 1, jpj |
|---|
| 697 | DO ji = 1, jpi |
|---|
| 698 | zerp = ( 1. - 2.*upsrnfh(ji,jj) ) * zsrp & |
|---|
| 699 | & * ( zsss(ji,jj) - s_dta(ji,jj,1) ) & |
|---|
| 700 | & / ( zsss(ji,jj) + rsmall ) |
|---|
| 701 | |
|---|
| 702 | zerp = MIN( zerp, zplus ) |
|---|
| 703 | zerp = MAX( zerp, zminus ) |
|---|
| 704 | erp(ji,jj) = zerp |
|---|
| 705 | zerpplus (ji,jj) = MAX( erp(ji,jj), 0.e0 ) |
|---|
| 706 | zerpminus(ji,jj) = MIN( erp(ji,jj), 0.e0 ) |
|---|
| 707 | END DO |
|---|
| 708 | END DO |
|---|
| 709 | |
|---|
| 710 | aplus = 0.e0 |
|---|
| 711 | aminus = 0.e0 |
|---|
| 712 | DO jj = 1, jpj |
|---|
| 713 | DO ji = 1, jpi |
|---|
| 714 | zwei = e1t(ji,jj) * e2t(ji,jj) * tmask_i(ji,jj) |
|---|
| 715 | aplus = aplus + zerpplus (ji,jj) * zwei |
|---|
| 716 | aminus = aminus - zerpminus(ji,jj) * zwei |
|---|
| 717 | END DO |
|---|
| 718 | END DO |
|---|
| 719 | IF( lk_mpp ) CALL mpp_sum( aplus ) ! sums over the global domain |
|---|
| 720 | IF( lk_mpp ) CALL mpp_sum( aminus ) |
|---|
| 721 | IF( l_ctl .AND. lwp ) WRITE(numout,*) ' oce_sbc_dmp : a+ = ', aplus, ' a- = ', aminus |
|---|
| 722 | |
|---|
| 723 | zadefi = MIN( aplus, aminus ) |
|---|
| 724 | IF( zadefi == 0.0 ) THEN |
|---|
| 725 | erp(:,:) = 0.e0 |
|---|
| 726 | ELSE |
|---|
| 727 | erp(:,:) = zadefi * ( zerpplus(:,:) / aplus + zerpminus(:,:) / aminus ) |
|---|
| 728 | ENDIF |
|---|
| 729 | #else |
|---|
| 730 | ! Rigid-lid (emp=emps=E-P-R+Erp) |
|---|
| 731 | |
|---|
| 732 | erp(:,:) = ( 1. - zfreeze(:,:) ) * zsrp & ! surface restoring term |
|---|
| 733 | & * ( zsss(:,:) - s_dta(:,:,1) ) & |
|---|
| 734 | & / ( zsss(:,:) + rsmall ) |
|---|
| 735 | #endif |
|---|
| 736 | |
|---|
| 737 | END SUBROUTINE oce_sbc_dmp |
|---|
| 738 | |
|---|
| 739 | #else |
|---|
| 740 | !!---------------------------------------------------------------------- |
|---|
| 741 | !! Dummy routine NO salinity data |
|---|
| 742 | !!---------------------------------------------------------------------- |
|---|
| 743 | SUBROUTINE oce_sbc_dmp ! Dummy routine |
|---|
| 744 | WRITE(*,*) 'oce_sbc_dmp: you should not have seen that print! error?' |
|---|
| 745 | END SUBROUTINE oce_sbc_dmp |
|---|
| 746 | #endif |
|---|
| 747 | |
|---|
| 748 | !!====================================================================== |
|---|
| 749 | END MODULE ocesbc |
|---|
