| 1 | ! |
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| 2 | MODULE surf_landice_mod |
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| 3 | |
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| 4 | IMPLICIT NONE |
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| 5 | |
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| 6 | CONTAINS |
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| 7 | ! |
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| 8 | !**************************************************************************************** |
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| 9 | ! |
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| 10 | SUBROUTINE surf_landice(itime, dtime, knon, knindex, & |
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| 11 | rlon, rlat, debut, lafin, & |
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| 12 | rmu0, lwdownm, albedo, pphi1, & |
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| 13 | swnet, lwnet, tsurf, p1lay, & |
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| 14 | cdragh, cdragm, precip_rain, precip_snow, precip_bs, temp_air, spechum, & |
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| 15 | AcoefH, AcoefQ, BcoefH, BcoefQ, & |
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| 16 | AcoefU, AcoefV, BcoefU, BcoefV, & |
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| 17 | ps, u1, v1, gustiness, rugoro, pctsrf, & |
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| 18 | snow, qsurf, qsol, qbs1, agesno, & |
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| 19 | tsoil, z0m, z0h, SFRWL, alb_dir, alb_dif, evap, fluxsens, fluxlat, fluxbs, & |
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| 20 | tsurf_new, dflux_s, dflux_l, & |
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| 21 | alt, slope, cloudf, & |
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| 22 | snowhgt, qsnow, to_ice, sissnow, & |
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| 23 | alb3, runoff, & |
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| 24 | flux_u1, flux_v1 & |
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| 25 | #ifdef ISO |
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| 26 | & ,xtprecip_rain, xtprecip_snow,xtspechum,Rland_ice & |
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| 27 | & ,xtsnow,xtsol,xtevap & |
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| 28 | #endif |
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| 29 | & ) |
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| 30 | |
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| 31 | USE dimphy |
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| 32 | USE surface_data, ONLY : type_ocean, calice, calsno, landice_opt, iflag_albcalc |
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| 33 | USE fonte_neige_mod, ONLY : fonte_neige,run_off_lic,fqcalving_global,ffonte_global,fqfonte_global,runofflic_global |
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| 34 | USE cpl_mod, ONLY : cpl_send_landice_fields |
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| 35 | USE calcul_fluxs_mod |
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| 36 | USE phys_local_var_mod, ONLY : zxrhoslic, zxustartlic |
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| 37 | USE phys_output_var_mod, ONLY : snow_o,zfra_o |
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| 38 | #ifdef ISO |
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| 39 | USE fonte_neige_mod, ONLY : xtrun_off_lic |
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| 40 | USE infotrac_phy, ONLY : ntiso,niso |
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| 41 | USE isotopes_routines_mod, ONLY: calcul_iso_surf_lic_vectall |
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| 42 | #ifdef ISOVERIF |
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| 43 | use isotopes_mod, ONLY: iso_eau,ridicule |
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| 44 | use isotopes_verif_mod |
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| 45 | #endif |
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| 46 | #endif |
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| 47 | USE geometry_mod, ONLY : longitude,latitude |
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| 48 | |
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| 49 | !FC |
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| 50 | USE ioipsl_getin_p_mod, ONLY : getin_p |
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| 51 | USE blowing_snow_ini_mod, ONLY : zeta_bs, pbst_bs, prt_bs |
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| 52 | |
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| 53 | #ifdef CPP_INLANDSIS |
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| 54 | USE surf_inlandsis_mod, ONLY : surf_inlandsis |
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| 55 | #endif |
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| 56 | |
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| 57 | USE indice_sol_mod |
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| 58 | |
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| 59 | |
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| 60 | ! INCLUDE "indicesol.h" |
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| 61 | INCLUDE "dimsoil.h" |
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| 62 | INCLUDE "YOMCST.h" |
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| 63 | INCLUDE "clesphys.h" |
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| 64 | |
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| 65 | ! Input variables |
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| 66 | !**************************************************************************************** |
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| 67 | INTEGER, INTENT(IN) :: itime, knon |
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| 68 | INTEGER, DIMENSION(klon), INTENT(in) :: knindex |
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| 69 | REAL, INTENT(in) :: dtime |
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| 70 | REAL, DIMENSION(klon), INTENT(IN) :: swnet ! net shortwave radiance |
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| 71 | REAL, DIMENSION(klon), INTENT(IN) :: lwnet ! net longwave radiance |
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| 72 | REAL, DIMENSION(klon), INTENT(IN) :: tsurf |
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| 73 | REAL, DIMENSION(klon), INTENT(IN) :: p1lay |
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| 74 | REAL, DIMENSION(klon), INTENT(IN) :: cdragh, cdragm |
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| 75 | REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow, precip_bs |
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| 76 | REAL, DIMENSION(klon), INTENT(IN) :: temp_air, spechum |
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| 77 | REAL, DIMENSION(klon), INTENT(IN) :: AcoefH, AcoefQ |
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| 78 | REAL, DIMENSION(klon), INTENT(IN) :: BcoefH, BcoefQ |
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| 79 | REAL, DIMENSION(klon), INTENT(IN) :: AcoefU, AcoefV, BcoefU, BcoefV |
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| 80 | REAL, DIMENSION(klon), INTENT(IN) :: ps |
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| 81 | REAL, DIMENSION(klon), INTENT(IN) :: u1, v1, gustiness, qbs1 |
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| 82 | REAL, DIMENSION(klon), INTENT(IN) :: rugoro |
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| 83 | REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf |
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| 84 | #ifdef ISO |
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| 85 | REAL, DIMENSION(ntiso,klon), INTENT(IN) :: xtprecip_rain, xtprecip_snow |
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| 86 | REAL, DIMENSION(ntiso,klon), INTENT(IN) :: xtspechum |
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| 87 | #endif |
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| 88 | |
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| 89 | LOGICAL, INTENT(IN) :: debut !true if first step |
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| 90 | LOGICAL, INTENT(IN) :: lafin !true if last step |
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| 91 | REAL, DIMENSION(klon), INTENT(IN) :: rlon, rlat |
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| 92 | REAL, DIMENSION(klon), INTENT(IN) :: rmu0 |
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| 93 | REAL, DIMENSION(klon), INTENT(IN) :: lwdownm !ylwdown |
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| 94 | REAL, DIMENSION(klon), INTENT(IN) :: albedo !mean albedo |
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| 95 | REAL, DIMENSION(klon), INTENT(IN) :: pphi1 |
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| 96 | REAL, DIMENSION(klon), INTENT(IN) :: alt !mean altitude of the grid box |
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| 97 | REAL, DIMENSION(klon), INTENT(IN) :: slope !mean slope in grid box |
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| 98 | REAL, DIMENSION(klon), INTENT(IN) :: cloudf !total cloud fraction |
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| 99 | |
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| 100 | ! In/Output variables |
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| 101 | !**************************************************************************************** |
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| 102 | REAL, DIMENSION(klon), INTENT(INOUT) :: snow, qsol |
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| 103 | REAL, DIMENSION(klon), INTENT(INOUT) :: agesno |
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| 104 | REAL, DIMENSION(klon, nsoilmx), INTENT(INOUT) :: tsoil |
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| 105 | #ifdef ISO |
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| 106 | REAL, DIMENSION(niso,klon), INTENT(INOUT) :: xtsnow, xtsol |
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| 107 | REAL, DIMENSION(niso,klon), INTENT(INOUT) :: Rland_ice |
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| 108 | #endif |
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| 109 | |
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| 110 | ! Output variables |
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| 111 | !**************************************************************************************** |
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| 112 | REAL, DIMENSION(klon), INTENT(OUT) :: qsurf |
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| 113 | REAL, DIMENSION(klon), INTENT(OUT) :: z0m, z0h |
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| 114 | !albedo SB >>> |
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| 115 | ! REAL, DIMENSION(klon), INTENT(OUT) :: alb1 ! new albedo in visible SW interval |
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| 116 | ! REAL, DIMENSION(klon), INTENT(OUT) :: alb2 ! new albedo in near IR interval |
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| 117 | REAL, DIMENSION(6), INTENT(IN) :: SFRWL |
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| 118 | REAL, DIMENSION(klon,nsw), INTENT(OUT) :: alb_dir,alb_dif |
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| 119 | !albedo SB <<< |
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| 120 | REAL, DIMENSION(klon), INTENT(OUT) :: evap, fluxsens, fluxlat |
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| 121 | REAL, DIMENSION(klon), INTENT(OUT) :: fluxbs |
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| 122 | REAL, DIMENSION(klon), INTENT(OUT) :: tsurf_new |
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| 123 | REAL, DIMENSION(klon), INTENT(OUT) :: dflux_s, dflux_l |
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| 124 | REAL, DIMENSION(klon), INTENT(OUT) :: flux_u1, flux_v1 |
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| 125 | |
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| 126 | REAL, DIMENSION(klon), INTENT(OUT) :: alb3 |
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| 127 | REAL, DIMENSION(klon), INTENT(OUT) :: qsnow !column water in snow [kg/m2] |
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| 128 | REAL, DIMENSION(klon), INTENT(OUT) :: snowhgt !Snow height (m) |
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| 129 | REAL, DIMENSION(klon), INTENT(OUT) :: to_ice |
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| 130 | REAL, DIMENSION(klon), INTENT(OUT) :: sissnow |
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| 131 | REAL, DIMENSION(klon), INTENT(OUT) :: runoff !Land ice runoff |
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| 132 | #ifdef ISO |
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| 133 | REAL, DIMENSION(ntiso,klon), INTENT(OUT) :: xtevap |
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| 134 | ! real, DIMENSION(niso,klon) :: xtrun_off_lic_0_diag ! est une variable globale de |
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| 135 | ! fonte_neige |
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| 136 | #endif |
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| 137 | |
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| 138 | |
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| 139 | ! Local variables |
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| 140 | !**************************************************************************************** |
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| 141 | REAL, DIMENSION(klon) :: soilcap, soilflux |
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| 142 | REAL, DIMENSION(klon) :: cal, beta, dif_grnd |
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| 143 | REAL, DIMENSION(klon) :: zfra, alb_neig |
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| 144 | REAL, DIMENSION(klon) :: radsol |
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| 145 | REAL, DIMENSION(klon) :: u0, v0, u1_lay, v1_lay, ustar |
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| 146 | INTEGER :: i,j,nt |
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| 147 | REAL, DIMENSION(klon) :: fqfonte,ffonte |
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| 148 | REAL, DIMENSION(klon) :: run_off_lic_frac |
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| 149 | #ifdef ISO |
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| 150 | real, parameter :: t_coup = 273.15 |
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| 151 | real, dimension(klon) :: fqfonte_diag |
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| 152 | real, dimension(klon) :: fq_fonte_diag |
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| 153 | real, dimension(klon) :: snow_evap_diag |
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| 154 | real, dimension(klon) :: fqcalving_diag |
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| 155 | real max_eau_sol_diag |
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| 156 | real, dimension(klon) :: runoff_diag |
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| 157 | real, dimension(klon) :: run_off_lic_diag |
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| 158 | real :: coeff_rel_diag |
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| 159 | integer ixt |
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| 160 | REAL, DIMENSION(niso,klon) :: xtsnow_prec,xtsol_prec |
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| 161 | REAL, DIMENSION(klon) :: snow_prec,qsol_prec |
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| 162 | ! real, DIMENSION(klon) :: run_off_lic_0_diag |
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| 163 | #endif |
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| 164 | |
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| 165 | REAL, DIMENSION(klon) :: emis_new !Emissivity |
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| 166 | REAL, DIMENSION(klon) :: swdown,lwdown |
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| 167 | REAL, DIMENSION(klon) :: precip_snow_adv, snow_adv !Snow Drift precip./advection (not used in inlandsis) |
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| 168 | REAL, DIMENSION(klon) :: erod !erosion of surface snow (flux, kg/m2/s like evap) |
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| 169 | REAL, DIMENSION(klon) :: zsl_height, wind_velo !surface layer height, wind spd |
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| 170 | REAL, DIMENSION(klon) :: dens_air, snow_cont_air !air density; snow content air |
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| 171 | REAL, DIMENSION(klon) :: alb_soil !albedo of underlying ice |
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| 172 | REAL, DIMENSION(klon) :: pexner !Exner potential |
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| 173 | REAL :: pref |
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| 174 | REAL, DIMENSION(klon,nsoilmx) :: tsoil0 !modif |
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| 175 | REAL :: dtis ! subtimestep |
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| 176 | LOGICAL :: debut_is, lafin_is ! debut and lafin for inlandsis |
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| 177 | |
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| 178 | CHARACTER (len = 20) :: modname = 'surf_landice' |
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| 179 | CHARACTER (len = 80) :: abort_message |
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| 180 | |
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| 181 | |
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| 182 | REAL,DIMENSION(klon) :: alb1,alb2 |
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| 183 | REAL,DIMENSION(klon) :: precip_totsnow, evap_totsnow |
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| 184 | REAL, DIMENSION (klon,6) :: alb6 |
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| 185 | REAL :: rho0, rhoice, ustart0, hsalt, esalt, qsalt |
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| 186 | REAL :: tau_dens, tau_dens0, tau_densmin, rhomax, rhohard |
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| 187 | REAL, DIMENSION(klon) :: ws1, rhos, ustart |
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| 188 | ! End definition |
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| 189 | !**************************************************************************************** |
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| 190 | !FC |
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| 191 | !FC |
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| 192 | REAL,SAVE :: alb_vis_sno_lic |
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| 193 | !$OMP THREADPRIVATE(alb_vis_sno_lic) |
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| 194 | REAL,SAVE :: alb_nir_sno_lic |
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| 195 | !$OMP THREADPRIVATE(alb_nir_sno_lic) |
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| 196 | LOGICAL, SAVE :: firstcall = .TRUE. |
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| 197 | !$OMP THREADPRIVATE(firstcall) |
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| 198 | |
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| 199 | |
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| 200 | !FC firtscall initializations |
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| 201 | !****************************************************************************************** |
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| 202 | #ifdef ISO |
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| 203 | #ifdef ISOVERIF |
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| 204 | ! write(*,*) 'surf_land_ice 1499' |
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| 205 | do i=1,knon |
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| 206 | if (iso_eau.gt.0) then |
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| 207 | call iso_verif_egalite_choix(xtsnow(iso_eau,i),snow(i), & |
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| 208 | & 'surf_land_ice 126',errmax,errmaxrel) |
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| 209 | endif !if (iso_eau.gt.0) then |
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| 210 | enddo !do i=1,knon |
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| 211 | #endif |
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| 212 | #endif |
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| 213 | |
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| 214 | IF (firstcall) THEN |
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| 215 | alb_vis_sno_lic=0.77 |
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| 216 | CALL getin_p('alb_vis_sno_lic',alb_vis_sno_lic) |
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| 217 | PRINT*, 'alb_vis_sno_lic',alb_vis_sno_lic |
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| 218 | alb_nir_sno_lic=0.77 |
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| 219 | CALL getin_p('alb_nir_sno_lic',alb_nir_sno_lic) |
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| 220 | PRINT*, 'alb_nir_sno_lic',alb_nir_sno_lic |
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| 221 | |
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| 222 | firstcall=.false. |
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| 223 | ENDIF |
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| 224 | !****************************************************************************************** |
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| 225 | |
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| 226 | ! Initialize output variables |
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| 227 | alb3(:) = 999999. |
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| 228 | alb2(:) = 999999. |
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| 229 | alb1(:) = 999999. |
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| 230 | fluxbs(:)=0. |
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| 231 | runoff(:) = 0. |
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| 232 | !**************************************************************************************** |
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| 233 | ! Calculate total absorbed radiance at surface |
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| 234 | ! |
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| 235 | !**************************************************************************************** |
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| 236 | radsol(:) = 0.0 |
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| 237 | radsol(1:knon) = swnet(1:knon) + lwnet(1:knon) |
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| 238 | |
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| 239 | !**************************************************************************************** |
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| 240 | |
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| 241 | !**************************************************************************************** |
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| 242 | ! landice_opt = 0 : soil_model, calcul_flux, fonte_neige, ... |
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| 243 | ! landice_opt = 1 : prepare and call INterace Lmdz SISvat (INLANDSIS) |
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| 244 | !**************************************************************************************** |
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| 245 | |
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| 246 | |
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| 247 | IF (landice_opt .EQ. 1) THEN |
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| 248 | |
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| 249 | !**************************************************************************************** |
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| 250 | ! CALL to INLANDSIS interface |
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| 251 | !**************************************************************************************** |
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| 252 | #ifdef CPP_INLANDSIS |
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| 253 | |
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| 254 | #ifdef ISO |
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| 255 | CALL abort_gcm('surf_landice 235','isotopes pas dans INLANDSIS',1) |
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| 256 | #endif |
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| 257 | |
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| 258 | debut_is=debut |
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| 259 | lafin_is=.false. |
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| 260 | ! Suppose zero surface speed |
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| 261 | u0(:) = 0.0 |
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| 262 | v0(:) = 0.0 |
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| 263 | |
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| 264 | |
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| 265 | CALL calcul_flux_wind(knon, dtime, & |
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| 266 | u0, v0, u1, v1, gustiness, cdragm, & |
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| 267 | AcoefU, AcoefV, BcoefU, BcoefV, & |
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| 268 | p1lay, temp_air, & |
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| 269 | flux_u1, flux_v1) |
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| 270 | |
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| 271 | |
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| 272 | ! Set constants and compute some input for SISVAT |
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| 273 | ! = 1000 hPa |
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| 274 | ! and calculate incoming flux for SW and LW interval: swdown, lwdown |
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| 275 | swdown(:) = 0.0 |
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| 276 | lwdown(:) = 0.0 |
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| 277 | snow_cont_air(:) = 0. ! the snow content in air is not a prognostic variable of the model |
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| 278 | alb_soil(:) = 0.4 ! before albedo(:) but here it is the ice albedo that we have to set |
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| 279 | ustar(:) = 0. |
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| 280 | pref = 100000. |
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| 281 | DO i = 1, knon |
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| 282 | swdown(i) = swnet(i)/(1-albedo(i)) |
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| 283 | lwdown(i) = lwdownm(i) |
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| 284 | wind_velo(i) = u1(i)**2 + v1(i)**2 |
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| 285 | wind_velo(i) = wind_velo(i)**0.5 |
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| 286 | pexner(i) = (p1lay(i)/pref)**(RD/RCPD) |
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| 287 | dens_air(i) = p1lay(i)/RD/temp_air(i) ! dry air density |
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| 288 | zsl_height(i) = pphi1(i)/RG |
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| 289 | tsoil0(i,:) = tsoil(i,:) |
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| 290 | ustar(i)= (cdragm(i)*(wind_velo(i)**2))**0.5 |
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| 291 | END DO |
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| 292 | |
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| 293 | |
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| 294 | |
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| 295 | dtis=dtime |
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| 296 | |
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| 297 | IF (lafin) THEN |
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| 298 | lafin_is=.true. |
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| 299 | END IF |
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| 300 | |
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| 301 | CALL surf_inlandsis(knon, rlon, rlat, knindex, itime, dtis, debut_is, lafin_is,& |
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| 302 | rmu0, swdown, lwdown, albedo, pexner, ps, p1lay, precip_rain, precip_snow, & |
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| 303 | zsl_height, wind_velo, ustar, temp_air, dens_air, spechum, tsurf,& |
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| 304 | rugoro, snow_cont_air, alb_soil, alt, slope, cloudf, & |
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| 305 | radsol, qsol, tsoil0, snow, zfra, snowhgt, qsnow, to_ice, sissnow,agesno, & |
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| 306 | AcoefH, AcoefQ, BcoefH, BcoefQ, cdragm, cdragh, & |
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| 307 | run_off_lic, fqfonte, ffonte, evap, erod, fluxsens, fluxlat,dflux_s, dflux_l, & |
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| 308 | tsurf_new, alb1, alb2, alb3, alb6, & |
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| 309 | emis_new, z0m, z0h, qsurf) |
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| 310 | |
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| 311 | debut_is=.false. |
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| 312 | |
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| 313 | |
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| 314 | ! Treatment of snow melting and calving |
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| 315 | |
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| 316 | ! for consistency with standard LMDZ, add calving to run_off_lic |
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| 317 | run_off_lic(:)=run_off_lic(:) + to_ice(:) |
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| 318 | |
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| 319 | DO i = 1, knon |
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| 320 | ffonte_global(knindex(i),is_lic) = ffonte(i) |
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| 321 | fqfonte_global(knindex(i),is_lic) = fqfonte(i)! net melting= melting - refreezing |
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| 322 | fqcalving_global(knindex(i),is_lic) = to_ice(i) ! flux |
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| 323 | runofflic_global(knindex(i)) = run_off_lic(i) |
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| 324 | ENDDO |
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| 325 | ! Here, we assume that the calving term is equal to the to_ice term |
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| 326 | ! (no ice accumulation) |
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| 327 | |
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| 328 | |
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| 329 | #else |
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| 330 | abort_message='Pb de coherence: landice_opt = 1 mais CPP_INLANDSIS = .false.' |
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| 331 | CALL abort_physic(modname,abort_message,1) |
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| 332 | #endif |
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| 333 | |
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| 334 | |
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| 335 | ELSE |
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| 336 | |
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| 337 | !**************************************************************************************** |
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| 338 | ! Soil calculations |
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| 339 | ! |
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| 340 | !**************************************************************************************** |
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| 341 | |
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| 342 | ! EV: use calbeta |
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| 343 | CALL calbeta(dtime, is_lic, knon, snow, qsol, beta, cal, dif_grnd) |
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| 344 | |
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| 345 | |
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| 346 | ! use soil model and recalculate properly cal |
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| 347 | IF (soil_model) THEN |
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| 348 | CALL soil(dtime, is_lic, knon, snow, tsurf, qsol, & |
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| 349 | & longitude(knindex(1:knon)), latitude(knindex(1:knon)), tsoil, soilcap, soilflux) |
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| 350 | cal(1:knon) = RCPD / soilcap(1:knon) |
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| 351 | radsol(1:knon) = radsol(1:knon) + soilflux(1:knon) |
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| 352 | ELSE |
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| 353 | cal = RCPD * calice |
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| 354 | WHERE (snow > 0.0) cal = RCPD * calsno |
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| 355 | ENDIF |
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| 356 | |
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| 357 | |
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| 358 | !**************************************************************************************** |
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| 359 | ! Calulate fluxes |
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| 360 | ! |
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| 361 | !**************************************************************************************** |
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| 362 | ! beta(:) = 1.0 |
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| 363 | ! dif_grnd(:) = 0.0 |
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| 364 | |
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| 365 | ! Suppose zero surface speed |
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| 366 | u0(:)=0.0 |
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| 367 | v0(:)=0.0 |
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| 368 | u1_lay(:) = u1(:) - u0(:) |
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| 369 | v1_lay(:) = v1(:) - v0(:) |
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| 370 | |
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| 371 | CALL calcul_fluxs(knon, is_lic, dtime, & |
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| 372 | tsurf, p1lay, cal, beta, cdragh, cdragh, ps, & |
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| 373 | precip_rain, precip_snow, snow, qsurf, & |
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| 374 | radsol, dif_grnd, temp_air, spechum, u1_lay, v1_lay, gustiness, & |
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| 375 | 1.,AcoefH, AcoefQ, BcoefH, BcoefQ, & |
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| 376 | tsurf_new, evap, fluxlat, fluxsens, dflux_s, dflux_l) |
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| 377 | |
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| 378 | |
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| 379 | #ifdef ISO |
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| 380 | ! verif |
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| 381 | #ifdef ISOVERIF |
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| 382 | !write(*,*) 'surf_land_ice 1499' |
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| 383 | do i=1,knon |
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| 384 | if (iso_eau.gt.0) then |
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| 385 | if (snow(i).gt.ridicule) then |
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| 386 | call iso_verif_egalite_choix(xtsnow(iso_eau,i),snow(i), & |
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| 387 | & 'surf_land_ice 1151',errmax,errmaxrel) |
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| 388 | endif !if ((snow(i).gt.ridicule)) then |
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| 389 | endif !if (iso_eau.gt.0) then |
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| 390 | enddo !do i=1,knon |
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| 391 | #endif |
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| 392 | !#ifdef ISOVERIF |
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| 393 | |
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| 394 | do i=1,knon |
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| 395 | snow_prec(i)=snow(i) |
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| 396 | do ixt=1,niso |
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| 397 | xtsnow_prec(ixt,i)=xtsnow(ixt,i) |
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| 398 | enddo !do ixt=1,niso |
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| 399 | ! initialisation: |
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| 400 | fq_fonte_diag(i)=0.0 |
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| 401 | fqfonte_diag(i)=0.0 |
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| 402 | snow_evap_diag(i)=0.0 |
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| 403 | enddo !do i=1,knon |
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| 404 | #endif |
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| 405 | !#ifdef ISO |
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| 406 | CALL calcul_flux_wind(knon, dtime, & |
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| 407 | u0, v0, u1, v1, gustiness, cdragm, & |
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| 408 | AcoefU, AcoefV, BcoefU, BcoefV, & |
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| 409 | p1lay, temp_air, & |
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| 410 | flux_u1, flux_v1) |
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| 411 | |
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| 412 | |
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| 413 | !**************************************************************************************** |
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| 414 | ! Calculate albedo |
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| 415 | ! |
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| 416 | !**************************************************************************************** |
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| 417 | |
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| 418 | CALL albsno(klon,knon,dtime,agesno(:),alb_neig(:), precip_snow(:)) |
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| 419 | |
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| 420 | |
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| 421 | ! EV: following lines are obsolete since we set alb1 and alb2 to constant values |
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| 422 | ! I therefore comment them |
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| 423 | ! alb1(1:knon) = alb_neig(1:knon)*zfra(1:knon) + & |
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| 424 | ! 0.6 * (1.0-zfra(1:knon)) |
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| 425 | ! |
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| 426 | !IM: plusieurs choix/tests sur l'albedo des "glaciers continentaux" |
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| 427 | ! alb1(1 : knon) = 0.6 !IM cf FH/GK |
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| 428 | ! alb1(1 : knon) = 0.82 |
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| 429 | ! alb1(1 : knon) = 0.77 !211003 Ksta0.77 |
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| 430 | ! alb1(1 : knon) = 0.8 !KstaTER0.8 & LMD_ARMIP5 |
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| 431 | !IM: KstaTER0.77 & LMD_ARMIP6 |
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| 432 | |
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| 433 | ! Attantion: alb1 and alb2 are not the same! |
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| 434 | alb1(1:knon) = alb_vis_sno_lic |
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| 435 | alb2(1:knon) = alb_nir_sno_lic |
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| 436 | |
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| 437 | |
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| 438 | !**************************************************************************************** |
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| 439 | ! Rugosity |
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| 440 | ! |
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| 441 | !**************************************************************************************** |
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| 442 | z0m = z0m_landice |
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| 443 | z0h = z0h_landice |
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| 444 | !z0m = SQRT(z0m**2+rugoro**2) |
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| 445 | |
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| 446 | |
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| 447 | |
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| 448 | ! Simple blowing snow param |
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| 449 | if (ok_bs) then |
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| 450 | ustart0 = 0.211 |
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| 451 | rhoice = 920.0 |
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| 452 | rho0 = 200.0 |
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| 453 | rhomax=450.0 |
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| 454 | rhohard=400.0 |
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| 455 | tau_dens0=86400.0*10. ! 10 days by default, in s |
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| 456 | tau_densmin=86400.0 ! 1 days according to in situ obs by C. Amory |
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| 457 | do i = 1, knon |
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| 458 | ! estimation of snow density |
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| 459 | ! snow density increases with snow age and |
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| 460 | ! increases even faster in case of sedimentation of blowing snow |
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| 461 | tau_dens=max(tau_densmin, tau_dens0*exp(-abs(precip_bs(i))/pbst_bs-abs(precip_rain(i))/prt_bs)) |
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| 462 | rhos(i)=rho0+(rhohard-rho0)*(1.-exp(-agesno(i)*86400.0/tau_dens)) |
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| 463 | ! blowing snow flux formula used in MAR |
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| 464 | ws1(i)=(u1(i)**2+v1(i)**2)**0.5 |
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| 465 | ustar(i)=(cdragm(i)*(u1(i)**2+v1(i)**2))**0.5 |
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| 466 | ustart(i)=ustart0*exp(max(rhoice/rho0-rhoice/rhos(i),0.))*exp(max(0.,rhos(i)-rhomax)) |
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| 467 | ! we have multiplied by exp to prevent erosion when rhos>rhomax (usefull till |
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| 468 | ! rhohard<450) |
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| 469 | esalt=1./(3.25*max(ustar(i),0.001)) |
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| 470 | hsalt=0.08436*ustar(i)**1.27 |
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| 471 | qsalt=(max(ustar(i)**2-ustart(i)**2,0.))/(RG*hsalt)*esalt |
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| 472 | !ep=qsalt*cdragm(i)*sqrt(u1(i)**2+v1(i)**2) |
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| 473 | fluxbs(i)= zeta_bs*p1lay(i)/RD/temp_air(i)*ws1(i)*cdragm(i)*(qbs1(i)-qsalt) |
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| 474 | enddo |
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| 475 | |
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| 476 | ! for outputs |
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| 477 | do j = 1, knon |
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| 478 | i = knindex(j) |
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| 479 | zxustartlic(i) = ustart(j) |
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| 480 | zxrhoslic(i) = rhos(j) |
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| 481 | enddo |
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| 482 | |
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| 483 | endif |
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| 484 | |
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| 485 | |
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| 486 | |
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| 487 | !**************************************************************************************** |
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| 488 | ! Calculate surface snow amount |
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| 489 | ! |
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| 490 | !**************************************************************************************** |
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| 491 | IF (ok_bs) THEN |
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| 492 | precip_totsnow=precip_snow+precip_bs |
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| 493 | evap_totsnow=evap-fluxbs ! flux bs is positive towards the surface (snow erosion) |
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| 494 | ELSE |
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| 495 | precip_totsnow=precip_snow |
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| 496 | evap_totsnow=evap |
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| 497 | ENDIF |
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| 498 | |
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| 499 | CALL fonte_neige(knon, is_lic, knindex, dtime, & |
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| 500 | tsurf, precip_rain, precip_totsnow, & |
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| 501 | snow, qsol, tsurf_new, evap_totsnow & |
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| 502 | #ifdef ISO |
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| 503 | & ,fq_fonte_diag,fqfonte_diag,snow_evap_diag,fqcalving_diag & |
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| 504 | & ,max_eau_sol_diag,runoff_diag,run_off_lic_diag,coeff_rel_diag & |
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| 505 | #endif |
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| 506 | & ) |
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| 507 | |
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| 508 | |
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| 509 | #ifdef ISO |
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| 510 | #ifdef ISOVERIF |
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| 511 | do i=1,knon |
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| 512 | if (iso_eau.gt.0) then |
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| 513 | call iso_verif_egalite_choix(Rland_ice(iso_eau,i),1.0, & |
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| 514 | & 'surf_landice_mod 217',errmax,errmaxrel) |
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| 515 | endif !if (iso_eau.gt.0) then |
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| 516 | enddo !do i=1,knon |
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| 517 | #endif |
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| 518 | !#ifdef ISOVERIF |
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| 519 | |
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| 520 | call calcul_iso_surf_lic_vectall(klon,knon, & |
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| 521 | & evap,snow_evap_diag,Tsurf_new,snow, & |
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| 522 | & fq_fonte_diag,fqfonte_diag,dtime,t_coup, & |
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| 523 | & precip_snow,xtprecip_snow,precip_rain,xtprecip_rain, snow_prec,xtsnow_prec, & |
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| 524 | & xtspechum,spechum,ps,Rland_ice, & |
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| 525 | & xtevap,xtsnow,fqcalving_diag, & |
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| 526 | & knindex,is_lic,run_off_lic_diag,coeff_rel_diag & |
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| 527 | & ) |
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| 528 | |
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| 529 | ! call fonte_neige_export_xtrun_off_lic_0(knon,xtrun_off_lic_0_diag) |
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| 530 | |
|---|
| 531 | #endif |
|---|
| 532 | !#ifdef ISO |
|---|
| 533 | |
|---|
| 534 | |
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| 535 | WHERE (snow(1 : knon) .LT. 0.0001) agesno(1 : knon) = 0. |
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| 536 | zfra(1:knon) = MAX(0.0,MIN(1.0,snow(1:knon)/(snow(1:knon)+10.0))) |
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| 537 | |
|---|
| 538 | |
|---|
| 539 | END IF ! landice_opt |
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| 540 | |
|---|
| 541 | |
|---|
| 542 | !**************************************************************************************** |
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| 543 | ! Send run-off on land-ice to coupler if coupled ocean. |
|---|
| 544 | ! run_off_lic has been calculated in fonte_neige or surf_inlandsis |
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| 545 | ! If landice_opt>=2, corresponding call is done from surf_land_orchidee |
|---|
| 546 | !**************************************************************************************** |
|---|
| 547 | IF (type_ocean=='couple' .AND. landice_opt .LT. 2) THEN |
|---|
| 548 | ! Compress fraction where run_off_lic is active (here all pctsrf(is_lic)) |
|---|
| 549 | run_off_lic_frac(:)=0.0 |
|---|
| 550 | DO j = 1, knon |
|---|
| 551 | i = knindex(j) |
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| 552 | run_off_lic_frac(j) = pctsrf(i,is_lic) |
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| 553 | ENDDO |
|---|
| 554 | |
|---|
| 555 | CALL cpl_send_landice_fields(itime, knon, knindex, run_off_lic, run_off_lic_frac) |
|---|
| 556 | ENDIF |
|---|
| 557 | |
|---|
| 558 | ! transfer runoff rate [kg/m2/s](!) to physiq for output |
|---|
| 559 | runoff(1:knon)=run_off_lic(1:knon)/dtime |
|---|
| 560 | |
|---|
| 561 | snow_o=0. |
|---|
| 562 | zfra_o = 0. |
|---|
| 563 | DO j = 1, knon |
|---|
| 564 | i = knindex(j) |
|---|
| 565 | snow_o(i) = snow(j) |
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| 566 | zfra_o(i) = zfra(j) |
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| 567 | ENDDO |
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| 568 | |
|---|
| 569 | |
|---|
| 570 | !albedo SB >>> |
|---|
| 571 | select case(NSW) |
|---|
| 572 | case(2) |
|---|
| 573 | alb_dir(1:knon,1)=alb1(1:knon) |
|---|
| 574 | alb_dir(1:knon,2)=alb2(1:knon) |
|---|
| 575 | case(4) |
|---|
| 576 | alb_dir(1:knon,1)=alb1(1:knon) |
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| 577 | alb_dir(1:knon,2)=alb2(1:knon) |
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| 578 | alb_dir(1:knon,3)=alb2(1:knon) |
|---|
| 579 | alb_dir(1:knon,4)=alb2(1:knon) |
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| 580 | case(6) |
|---|
| 581 | alb_dir(1:knon,1)=alb1(1:knon) |
|---|
| 582 | alb_dir(1:knon,2)=alb1(1:knon) |
|---|
| 583 | alb_dir(1:knon,3)=alb1(1:knon) |
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| 584 | alb_dir(1:knon,4)=alb2(1:knon) |
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| 585 | alb_dir(1:knon,5)=alb2(1:knon) |
|---|
| 586 | alb_dir(1:knon,6)=alb2(1:knon) |
|---|
| 587 | |
|---|
| 588 | IF ((landice_opt .EQ. 1) .AND. (iflag_albcalc .EQ. 2)) THEN |
|---|
| 589 | alb_dir(1:knon,1)=alb6(1:knon,1) |
|---|
| 590 | alb_dir(1:knon,2)=alb6(1:knon,2) |
|---|
| 591 | alb_dir(1:knon,3)=alb6(1:knon,3) |
|---|
| 592 | alb_dir(1:knon,4)=alb6(1:knon,4) |
|---|
| 593 | alb_dir(1:knon,5)=alb6(1:knon,5) |
|---|
| 594 | alb_dir(1:knon,6)=alb6(1:knon,6) |
|---|
| 595 | ENDIF |
|---|
| 596 | |
|---|
| 597 | end select |
|---|
| 598 | alb_dif=alb_dir |
|---|
| 599 | !albedo SB <<< |
|---|
| 600 | |
|---|
| 601 | |
|---|
| 602 | END SUBROUTINE surf_landice |
|---|
| 603 | ! |
|---|
| 604 | !**************************************************************************************** |
|---|
| 605 | ! |
|---|
| 606 | END MODULE surf_landice_mod |
|---|
| 607 | |
|---|
| 608 | |
|---|
| 609 | |
|---|
