[9762] | 1 | MODULE usrdef_sbc |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE usrdef_sbc *** |
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| 4 | !! |
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| 5 | !! === BENCH configuration === |
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| 6 | !! |
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| 7 | !! User defined : surface forcing of a user configuration |
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| 8 | !!====================================================================== |
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| 9 | !! History : 4.0 ! |
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| 10 | !!---------------------------------------------------------------------- |
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| 11 | |
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| 12 | !!---------------------------------------------------------------------- |
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| 13 | !! usr_def_sbc : user defined surface bounday conditions in BENCH case |
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| 14 | !!---------------------------------------------------------------------- |
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[10179] | 15 | USE par_oce ! ocean space and time domain |
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| 16 | USE dom_oce |
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| 17 | USE oce ! ocean dynamics and tracers |
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[9762] | 18 | USE sbc_oce ! Surface boundary condition: ocean fields |
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[10179] | 19 | USE sbc_ice ! Surface boundary condition: ocean fields |
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[9762] | 20 | USE in_out_manager ! I/O manager |
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[10179] | 21 | USE phycst ! physical constants |
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| 22 | USE lib_mpp ! MPP library |
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| 23 | USE lbclnk ! lateral boundary conditions - mpp exchanges |
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[9762] | 24 | |
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[10179] | 25 | #if defined key_si3 |
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| 26 | USE ice, ONLY : at_i_b, a_i_b |
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| 27 | #endif |
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| 28 | |
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[9762] | 29 | IMPLICIT NONE |
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| 30 | PRIVATE |
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| 31 | |
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| 32 | PUBLIC usrdef_sbc_oce ! routine called in sbcmod module |
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| 33 | PUBLIC usrdef_sbc_ice_tau ! routine called by sbcice_lim.F90 for ice dynamics |
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| 34 | PUBLIC usrdef_sbc_ice_flx ! routine called by sbcice_lim.F90 for ice thermo |
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| 35 | |
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| 36 | !!---------------------------------------------------------------------- |
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| 37 | !! NEMO/OPA 4.0 , NEMO Consortium (2016) |
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| 38 | !! $Id$ |
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| 39 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 40 | !!---------------------------------------------------------------------- |
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| 41 | CONTAINS |
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| 42 | |
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[10976] | 43 | SUBROUTINE usrdef_sbc_oce( kt, Kbb ) |
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[9762] | 44 | !!--------------------------------------------------------------------- |
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| 45 | !! *** ROUTINE usr_def_sbc *** |
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| 46 | !! |
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| 47 | !! ** Purpose : provide at each time-step the surface boundary |
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| 48 | !! condition, i.e. the momentum, heat and freshwater fluxes. |
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| 49 | !! |
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| 50 | !! ** Method : all 0 fields, for BENCH case |
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| 51 | !! CAUTION : never mask the surface stress field ! |
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| 52 | !! |
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| 53 | !! ** Action : - set to ZERO all the ocean surface boundary condition, i.e. |
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| 54 | !! utau, vtau, taum, wndm, qns, qsr, emp, sfx |
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| 55 | !! |
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| 56 | !!---------------------------------------------------------------------- |
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| 57 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[10976] | 58 | INTEGER, INTENT(in) :: Kbb ! ocean time index |
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[9762] | 59 | !!--------------------------------------------------------------------- |
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| 60 | ! |
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| 61 | IF( kt == nit000 ) THEN |
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| 62 | ! |
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| 63 | IF(lwp) WRITE(numout,*)' usr_sbc : BENCH case: surface forcing' |
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| 64 | IF(lwp) WRITE(numout,*)' ~~~~~~~~~~~ vtau = taum = wndm = qns = qsr = emp = sfx = 0' |
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| 65 | ! |
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| 66 | utau(:,:) = 0._wp |
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| 67 | vtau(:,:) = 0._wp |
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| 68 | taum(:,:) = 0._wp |
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| 69 | wndm(:,:) = 0._wp |
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| 70 | ! |
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| 71 | emp (:,:) = 0._wp |
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| 72 | sfx (:,:) = 0._wp |
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| 73 | qns (:,:) = 0._wp |
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| 74 | qsr (:,:) = 0._wp |
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[10179] | 75 | ! |
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| 76 | utau_b(:,:) = 0._wp |
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| 77 | vtau_b(:,:) = 0._wp |
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| 78 | emp_b (:,:) = 0._wp |
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| 79 | sfx_b (:,:) = 0._wp |
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| 80 | qns_b (:,:) = 0._wp |
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| 81 | ! |
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[9762] | 82 | ENDIF |
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| 83 | |
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| 84 | ! |
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| 85 | END SUBROUTINE usrdef_sbc_oce |
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| 86 | |
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[10179] | 87 | |
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[9762] | 88 | SUBROUTINE usrdef_sbc_ice_tau( kt ) |
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[10179] | 89 | !!--------------------------------------------------------------------- |
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| 90 | !! *** ROUTINE usrdef_sbc_ice_tau *** |
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| 91 | !! |
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| 92 | !! ** Purpose : provide the surface boundary (momentum) condition over |
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| 93 | !sea-ice |
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| 94 | !!--------------------------------------------------------------------- |
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[9762] | 95 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[10179] | 96 | ! |
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| 97 | REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace |
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| 98 | INTEGER :: ji, jj |
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| 99 | !!--------------------------------------------------------------------- |
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| 100 | #if defined key_si3 |
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| 101 | IF( kt==nit000 .AND. lwp) WRITE(numout,*)' usrdef_sbc_ice : BENCH case: constant stress forcing' |
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| 102 | ! |
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| 103 | ! define unique value on each point. z2d ranging from 0.05 to -0.05 |
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| 104 | DO jj = 1, jpj |
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| 105 | DO ji = 1, jpi |
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| 106 | z2d(ji,jj) = 0.1 * ( 0.5 - REAL( nimpp + ji - 1 + ( njmpp + jj - 2 ) * jpiglo, wp ) / REAL( jpiglo * jpjglo, wp ) ) |
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| 107 | ENDDO |
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| 108 | ENDDO |
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| 109 | utau_ice(:,:) = 0.1_wp + z2d(:,:) |
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| 110 | vtau_ice(:,:) = 0.1_wp + z2d(:,:) |
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| 111 | |
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| 112 | CALL lbc_lnk_multi( 'usrdef_sbc', utau_ice, 'U', -1., vtau_ice, 'V', -1. ) |
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| 113 | #endif |
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| 114 | ! |
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[9762] | 115 | END SUBROUTINE usrdef_sbc_ice_tau |
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| 116 | |
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[10179] | 117 | |
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| 118 | SUBROUTINE usrdef_sbc_ice_flx( kt, phs, phi ) |
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| 119 | !!--------------------------------------------------------------------- |
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| 120 | !! *** ROUTINE usrdef_sbc_ice_flx *** |
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| 121 | !! |
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| 122 | !! ** Purpose : provide the surface boundary (flux) condition over |
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| 123 | !sea-ice |
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| 124 | !!--------------------------------------------------------------------- |
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[9762] | 125 | INTEGER, INTENT(in) :: kt ! ocean time step |
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[10179] | 126 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phs ! snow thickness |
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| 127 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phi ! ice thickness |
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| 128 | !! |
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| 129 | REAL(wp) :: zfr1, zfr2 ! local variables |
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| 130 | REAL(wp), DIMENSION(jpi,jpj) :: zsnw ! snw distribution after wind blowing |
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| 131 | !!--------------------------------------------------------------------- |
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| 132 | ! |
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| 133 | #if defined key_si3 |
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| 134 | IF( kt==nit000 .AND. lwp) WRITE(numout,*)' usrdef_sbc_ice : BENCH case: NO flux forcing' |
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| 135 | ! |
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| 136 | ! ocean variables (renaming) |
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| 137 | emp_oce (:,:) = 0._wp ! uniform value for freshwater budget (E-P) |
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| 138 | qsr_oce (:,:) = 0._wp ! uniform value for solar radiation |
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| 139 | qns_oce (:,:) = 0._wp ! uniform value for non-solar radiation |
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| 140 | |
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| 141 | ! ice variables |
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| 142 | alb_ice (:,:,:) = 0.7_wp ! useless |
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| 143 | qsr_ice (:,:,:) = 0._wp ! uniform value for solar radiation |
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| 144 | qns_ice (:,:,:) = 0._wp ! uniform value for non-solar radiation |
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| 145 | sprecip (:,:) = 0._wp ! uniform value for snow precip |
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| 146 | evap_ice(:,:,:) = 0._wp ! uniform value for sublimation |
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| 147 | |
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| 148 | ! ice fields deduced from above |
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| 149 | zsnw(:,:) = 1._wp |
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| 150 | !!CALL lim_thd_snwblow( at_i_b, zsnw ) ! snow distribution over ice after |
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| 151 | !wind blowing |
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| 152 | emp_ice (:,:) = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw(:,:) |
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| 153 | emp_oce (:,:) = emp_oce(:,:) - sprecip(:,:) * (1._wp - zsnw(:,:) ) |
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| 154 | qevap_ice(:,:,:) = 0._wp |
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| 155 | qprec_ice(:,:) = rhos * ( sst_m(:,:) * rcpi - rLfus ) * tmask(:,:,1) ! in J/m3 |
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| 156 | qemp_oce (:,:) = - emp_oce(:,:) * sst_m(:,:) * rcp |
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| 157 | qemp_ice (:,:) = sprecip(:,:) * zsnw * ( sst_m(:,:) * rcpi - rLfus ) * tmask(:,:,1) ! solid precip (only) |
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| 158 | |
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| 159 | ! total fluxes |
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| 160 | emp_tot (:,:) = emp_ice + emp_oce |
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| 161 | qns_tot (:,:) = at_i_b(:,:) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) + qemp_ice(:,:) + qemp_oce(:,:) |
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| 162 | qsr_tot (:,:) = at_i_b(:,:) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 ) |
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| 163 | |
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| 164 | ! --- shortwave radiation transmitted below the surface (W/m2, see Grenfell Maykut 77) --- ! |
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| 165 | zfr1 = ( 0.18 * ( 1.0 - cldf_ice ) + 0.35 * cldf_ice ) ! transmission when hi>10cm |
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| 166 | zfr2 = ( 0.82 * ( 1.0 - cldf_ice ) + 0.65 * cldf_ice ) ! zfr2 such that zfr1 + zfr2 to equal 1 |
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| 167 | ! |
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| 168 | WHERE ( phs(:,:,:) <= 0._wp .AND. phi(:,:,:) < 0.1_wp ) ! linear decrease from hi=0 to 10cm |
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| 169 | qtr_ice_top(:,:,:) = qsr_ice(:,:,:) * ( zfr1 + zfr2 * ( 1._wp - phi(:,:,:) * 10._wp ) ) |
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| 170 | ELSEWHERE( phs(:,:,:) <= 0._wp .AND. phi(:,:,:) >= 0.1_wp ) ! constant (zfr1) when hi>10cm |
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| 171 | qtr_ice_top(:,:,:) = qsr_ice(:,:,:) * zfr1 |
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| 172 | ELSEWHERE ! zero when hs>0 |
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| 173 | qtr_ice_top(:,:,:) = 0._wp |
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| 174 | END WHERE |
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| 175 | #endif |
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| 176 | |
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[9762] | 177 | END SUBROUTINE usrdef_sbc_ice_flx |
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| 178 | |
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| 179 | !!====================================================================== |
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| 180 | END MODULE usrdef_sbc |
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