| 1 | MODULE sbcblk |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sbcblk *** |
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| 4 | !! Ocean forcing: momentum, heat and freshwater flux formulation |
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| 5 | !! Aerodynamic Bulk Formulas |
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| 6 | !! SUCCESSOR OF "sbcblk_core" |
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| 7 | !!===================================================================== |
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| 8 | !! History : 1.0 ! 2004-08 (U. Schweckendiek) Original CORE code |
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| 9 | !! 2.0 ! 2005-04 (L. Brodeau, A.M. Treguier) improved CORE bulk and its user interface |
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| 10 | !! 3.0 ! 2006-06 (G. Madec) sbc rewritting |
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| 11 | !! - ! 2006-12 (L. Brodeau) Original code for turb_core |
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| 12 | !! 3.2 ! 2009-04 (B. Lemaire) Introduce iom_put |
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| 13 | !! 3.3 ! 2010-10 (S. Masson) add diurnal cycle |
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| 14 | !! 3.4 ! 2011-11 (C. Harris) Fill arrays required by CICE |
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| 15 | !! 3.7 ! 2014-06 (L. Brodeau) simplification and optimization of CORE bulk |
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| 16 | !! 4.0 ! 2016-06 (L. Brodeau) sbcblk_core becomes sbcblk and is not restricted to the CORE algorithm anymore |
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| 17 | !! ! ==> based on AeroBulk (https://github.com/brodeau/aerobulk/) |
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| 18 | !! 4.0 ! 2016-10 (G. Madec) introduce a sbc_blk_init routine |
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| 19 | !! 4.0 ! 2016-10 (M. Vancoppenolle) Introduce conduction flux emulator (M. Vancoppenolle) |
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| 20 | !! 4.0 ! 2019-03 (F. Lemarié & G. Samson) add ABL compatibility (ln_abl=TRUE) |
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| 21 | !! 4.2 ! 2020-12 (L. Brodeau) Introduction of various air-ice bulk parameterizations + improvements |
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| 22 | !!---------------------------------------------------------------------- |
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| 23 | |
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| 24 | !!---------------------------------------------------------------------- |
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| 25 | !! sbc_blk_init : initialisation of the chosen bulk formulation as ocean surface boundary condition |
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| 26 | !! sbc_blk : bulk formulation as ocean surface boundary condition |
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| 27 | !! blk_oce_1 : computes pieces of momentum, heat and freshwater fluxes over ocean for ABL model (ln_abl=TRUE) |
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| 28 | !! blk_oce_2 : finalizes momentum, heat and freshwater fluxes computation over ocean after the ABL step (ln_abl=TRUE) |
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| 29 | !! sea-ice case only : |
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| 30 | !! blk_ice_1 : provide the air-ice stress |
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| 31 | !! blk_ice_2 : provide the heat and mass fluxes at air-ice interface |
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| 32 | !! blk_ice_qcn : provide ice surface temperature and snow/ice conduction flux (emulating conduction flux) |
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| 33 | !!---------------------------------------------------------------------- |
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| 34 | USE oce ! ocean dynamics and tracers |
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| 35 | USE dom_oce ! ocean space and time domain |
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| 36 | USE phycst ! physical constants |
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| 37 | USE fldread ! read input fields |
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| 38 | USE sbc_oce ! Surface boundary condition: ocean fields |
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| 39 | USE cyclone ! Cyclone 10m wind form trac of cyclone centres |
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| 40 | USE sbcdcy ! surface boundary condition: diurnal cycle |
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| 41 | USE sbcwave , ONLY : cdn_wave ! wave module |
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| 42 | USE lib_fortran ! to use key_nosignedzero and glob_sum |
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| 43 | ! |
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| 44 | #if defined key_si3 |
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| 45 | USE sbc_ice ! Surface boundary condition: ice fields #LB? ok to be in 'key_si3' ??? |
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| 46 | USE ice , ONLY : u_ice, v_ice, jpl, a_i_b, at_i_b, t_su, rn_cnd_s, hfx_err_dif, nn_qtrice |
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| 47 | USE icevar ! for CALL ice_var_snwblow |
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| 48 | USE sbcblk_algo_ice_an05 |
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| 49 | USE sbcblk_algo_ice_lu12 |
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| 50 | USE sbcblk_algo_ice_lg15 |
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| 51 | #endif |
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| 52 | USE sbcblk_algo_ncar ! => turb_ncar : NCAR - (formerly known as CORE, Large & Yeager, 2009) |
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| 53 | USE sbcblk_algo_coare3p0 ! => turb_coare3p0 : COAREv3.0 (Fairall et al. 2003) |
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| 54 | USE sbcblk_algo_coare3p6 ! => turb_coare3p6 : COAREv3.6 (Fairall et al. 2018 + Edson et al. 2013) |
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| 55 | USE sbcblk_algo_ecmwf ! => turb_ecmwf : ECMWF (IFS cycle 45r1) |
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| 56 | USE sbcblk_algo_andreas ! => turb_andreas : Andreas et al. 2015 |
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| 57 | ! |
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| 58 | USE iom ! I/O manager library |
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| 59 | USE in_out_manager ! I/O manager |
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| 60 | USE lib_mpp ! distribued memory computing library |
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| 61 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
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| 62 | USE prtctl ! Print control |
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| 63 | |
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| 64 | USE sbc_phy ! Catalog of functions for physical/meteorological parameters in the marine boundary layer |
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| 65 | |
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| 66 | IMPLICIT NONE |
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| 67 | PRIVATE |
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| 68 | |
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| 69 | PUBLIC sbc_blk_init ! called in sbcmod |
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| 70 | PUBLIC sbc_blk ! called in sbcmod |
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| 71 | PUBLIC blk_oce_1 ! called in sbcabl |
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| 72 | PUBLIC blk_oce_2 ! called in sbcabl |
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| 73 | #if defined key_si3 |
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| 74 | PUBLIC blk_ice_1 ! routine called in icesbc |
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| 75 | PUBLIC blk_ice_2 ! routine called in icesbc |
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| 76 | PUBLIC blk_ice_qcn ! routine called in icesbc |
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| 77 | #endif |
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| 78 | |
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| 79 | INTEGER , PUBLIC, PARAMETER :: jp_wndi = 1 ! index of 10m wind velocity (i-component) (m/s) at T-point |
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| 80 | INTEGER , PUBLIC, PARAMETER :: jp_wndj = 2 ! index of 10m wind velocity (j-component) (m/s) at T-point |
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| 81 | INTEGER , PUBLIC, PARAMETER :: jp_tair = 3 ! index of 10m air temperature (Kelvin) |
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| 82 | INTEGER , PUBLIC, PARAMETER :: jp_humi = 4 ! index of specific humidity (kg/kg) |
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| 83 | INTEGER , PUBLIC, PARAMETER :: jp_qsr = 5 ! index of solar heat (W/m2) |
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| 84 | INTEGER , PUBLIC, PARAMETER :: jp_qlw = 6 ! index of Long wave (W/m2) |
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| 85 | INTEGER , PUBLIC, PARAMETER :: jp_prec = 7 ! index of total precipitation (rain+snow) (Kg/m2/s) |
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| 86 | INTEGER , PUBLIC, PARAMETER :: jp_snow = 8 ! index of snow (solid prcipitation) (kg/m2/s) |
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| 87 | INTEGER , PUBLIC, PARAMETER :: jp_slp = 9 ! index of sea level pressure (Pa) |
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| 88 | INTEGER , PUBLIC, PARAMETER :: jp_uoatm = 10 ! index of surface current (i-component) |
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| 89 | ! ! seen by the atmospheric forcing (m/s) at T-point |
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| 90 | INTEGER , PUBLIC, PARAMETER :: jp_voatm = 11 ! index of surface current (j-component) |
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| 91 | ! ! seen by the atmospheric forcing (m/s) at T-point |
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| 92 | INTEGER , PUBLIC, PARAMETER :: jp_cc = 12 ! index of cloud cover (-) range:0-1 |
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| 93 | INTEGER , PUBLIC, PARAMETER :: jp_hpgi = 13 ! index of ABL geostrophic wind or hpg (i-component) (m/s) at T-point |
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| 94 | INTEGER , PUBLIC, PARAMETER :: jp_hpgj = 14 ! index of ABL geostrophic wind or hpg (j-component) (m/s) at T-point |
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| 95 | INTEGER , PUBLIC, PARAMETER :: jpfld = 14 ! maximum number of files to read |
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| 96 | |
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| 97 | ! Warning: keep this structure allocatable for Agrif... |
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| 98 | TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf ! structure of input atmospheric fields (file informations, fields read) |
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| 99 | |
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| 100 | ! !!* Namelist namsbc_blk : bulk parameters |
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| 101 | LOGICAL :: ln_NCAR ! "NCAR" algorithm (Large and Yeager 2008) |
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| 102 | LOGICAL :: ln_COARE_3p0 ! "COARE 3.0" algorithm (Fairall et al. 2003) |
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| 103 | LOGICAL :: ln_COARE_3p6 ! "COARE 3.6" algorithm (Edson et al. 2013) |
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| 104 | LOGICAL :: ln_ECMWF ! "ECMWF" algorithm (IFS cycle 45r1) |
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| 105 | LOGICAL :: ln_ANDREAS ! "ANDREAS" algorithm (Andreas et al. 2015) |
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| 106 | ! |
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| 107 | !#LB: |
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| 108 | LOGICAL :: ln_Cx_ice_cst ! use constant air-ice bulk transfer coefficients (value given in namelist's rn_Cd_i, rn_Ce_i & rn_Ch_i) |
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| 109 | REAL(wp) :: rn_Cd_i, rn_Ce_i, rn_Ch_i ! values for " " |
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| 110 | LOGICAL :: ln_Cx_ice_AN05 ! air-ice bulk transfer coefficients based on Andreas et al., 2005 |
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| 111 | LOGICAL :: ln_Cx_ice_LU12 ! air-ice bulk transfer coefficients based on Lupkes et al., 2012 |
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| 112 | LOGICAL :: ln_Cx_ice_LG15 ! air-ice bulk transfer coefficients based on Lupkes & Gryanik, 2015 |
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| 113 | !#LB. |
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| 114 | ! |
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| 115 | LOGICAL :: ln_crt_fbk ! Add surface current feedback to the wind stress computation (Renault et al. 2020) |
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| 116 | REAL(wp) :: rn_stau_a ! Alpha and Beta coefficients of Renault et al. 2020, eq. 10: Stau = Alpha * Wnd + Beta |
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| 117 | REAL(wp) :: rn_stau_b ! |
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| 118 | ! |
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| 119 | REAL(wp) :: rn_pfac ! multiplication factor for precipitation |
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| 120 | REAL(wp), PUBLIC :: rn_efac ! multiplication factor for evaporation |
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| 121 | REAL(wp) :: rn_zqt ! z(q,t) : height of humidity and temperature measurements |
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| 122 | REAL(wp) :: rn_zu ! z(u) : height of wind measurements |
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| 123 | ! |
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| 124 | INTEGER :: nn_iter_algo ! Number of iterations in bulk param. algo ("stable ABL + weak wind" requires more) |
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| 125 | |
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| 126 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: theta_zu, q_zu ! air temp. and spec. hum. at wind speed height (L15 bulk scheme) |
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| 127 | |
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| 128 | #if defined key_si3 |
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| 129 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: Cd_ice , Ch_ice , Ce_ice !#LB transfert coefficients over ice |
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| 130 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: theta_zu_i, q_zu_i !#LB fixme ! air temp. and spec. hum. over ice at wind speed height (L15 bulk scheme) |
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| 131 | #endif |
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| 132 | |
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| 133 | |
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| 134 | LOGICAL :: ln_skin_cs ! use the cool-skin (only available in ECMWF and COARE algorithms) !LB |
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| 135 | LOGICAL :: ln_skin_wl ! use the warm-layer parameterization (only available in ECMWF and COARE algorithms) !LB |
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| 136 | LOGICAL :: ln_humi_sph ! humidity read in files ("sn_humi") is specific humidity [kg/kg] if .true. !LB |
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| 137 | LOGICAL :: ln_humi_dpt ! humidity read in files ("sn_humi") is dew-point temperature [K] if .true. !LB |
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| 138 | LOGICAL :: ln_humi_rlh ! humidity read in files ("sn_humi") is relative humidity [%] if .true. !LB |
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| 139 | LOGICAL :: ln_tair_pot ! temperature read in files ("sn_tair") is already potential temperature (not absolute) |
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| 140 | ! |
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| 141 | INTEGER :: nhumi ! choice of the bulk algorithm |
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| 142 | ! ! associated indices: |
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| 143 | INTEGER, PARAMETER :: np_humi_sph = 1 |
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| 144 | INTEGER, PARAMETER :: np_humi_dpt = 2 |
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| 145 | INTEGER, PARAMETER :: np_humi_rlh = 3 |
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| 146 | |
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| 147 | INTEGER :: nblk ! choice of the bulk algorithm |
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| 148 | ! ! associated indices: |
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| 149 | INTEGER, PARAMETER :: np_NCAR = 1 ! "NCAR" algorithm (Large and Yeager 2008) |
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| 150 | INTEGER, PARAMETER :: np_COARE_3p0 = 2 ! "COARE 3.0" algorithm (Fairall et al. 2003) |
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| 151 | INTEGER, PARAMETER :: np_COARE_3p6 = 3 ! "COARE 3.6" algorithm (Edson et al. 2013) |
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| 152 | INTEGER, PARAMETER :: np_ECMWF = 4 ! "ECMWF" algorithm (IFS cycle 45r1) |
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| 153 | INTEGER, PARAMETER :: np_ANDREAS = 5 ! "ANDREAS" algorithm (Andreas et al. 2015) |
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| 154 | |
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| 155 | !#LB: |
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| 156 | #if defined key_si3 |
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| 157 | ! Same, over sea-ice: |
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| 158 | INTEGER :: nblk_ice ! choice of the bulk algorithm |
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| 159 | ! ! associated indices: |
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| 160 | INTEGER, PARAMETER :: np_ice_cst = 1 ! constant transfer coefficients |
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| 161 | INTEGER, PARAMETER :: np_ice_an05 = 2 ! Andreas et al., 2005 |
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| 162 | INTEGER, PARAMETER :: np_ice_lu12 = 3 ! Lupkes el al., 2012 |
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| 163 | INTEGER, PARAMETER :: np_ice_lg15 = 4 ! Lupkes & Gryanik, 2015 |
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| 164 | #endif |
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| 165 | !LB. |
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| 166 | |
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| 167 | |
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| 168 | |
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| 169 | !! * Substitutions |
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| 170 | # include "do_loop_substitute.h90" |
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| 171 | !!---------------------------------------------------------------------- |
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| 172 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 173 | !! $Id$ |
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| 174 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 175 | !!---------------------------------------------------------------------- |
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| 176 | CONTAINS |
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| 177 | |
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| 178 | INTEGER FUNCTION sbc_blk_alloc() |
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| 179 | !!------------------------------------------------------------------- |
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| 180 | !! *** ROUTINE sbc_blk_alloc *** |
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| 181 | !!------------------------------------------------------------------- |
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| 182 | ALLOCATE( theta_zu(jpi,jpj), q_zu(jpi,jpj), STAT=sbc_blk_alloc ) |
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| 183 | CALL mpp_sum ( 'sbcblk', sbc_blk_alloc ) |
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| 184 | IF( sbc_blk_alloc /= 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_alloc: failed to allocate arrays' ) |
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| 185 | END FUNCTION sbc_blk_alloc |
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| 186 | |
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| 187 | #if defined key_si3 |
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| 188 | INTEGER FUNCTION sbc_blk_ice_alloc() |
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| 189 | !!------------------------------------------------------------------- |
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| 190 | !! *** ROUTINE sbc_blk_ice_alloc *** |
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| 191 | !!------------------------------------------------------------------- |
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| 192 | ALLOCATE( Cd_ice (jpi,jpj), Ch_ice (jpi,jpj), Ce_ice (jpi,jpj), & |
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| 193 | & theta_zu_i(jpi,jpj), q_zu_i(jpi,jpj), STAT=sbc_blk_ice_alloc ) |
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| 194 | CALL mpp_sum ( 'sbcblk', sbc_blk_ice_alloc ) |
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| 195 | IF( sbc_blk_ice_alloc /= 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_ice_alloc: failed to allocate arrays' ) |
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| 196 | END FUNCTION sbc_blk_ice_alloc |
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| 197 | #endif |
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| 198 | |
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| 199 | |
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| 200 | SUBROUTINE sbc_blk_init |
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| 201 | !!--------------------------------------------------------------------- |
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| 202 | !! *** ROUTINE sbc_blk_init *** |
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| 203 | !! |
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| 204 | !! ** Purpose : choose and initialize a bulk formulae formulation |
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| 205 | !! |
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| 206 | !! ** Method : |
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| 207 | !! |
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| 208 | !!---------------------------------------------------------------------- |
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| 209 | INTEGER :: jfpr ! dummy loop indice and argument |
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| 210 | INTEGER :: ios, ierror, ioptio ! Local integer |
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| 211 | !! |
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| 212 | CHARACTER(len=100) :: cn_dir ! Root directory for location of atmospheric forcing files |
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| 213 | TYPE(FLD_N), DIMENSION(jpfld) :: slf_i ! array of namelist informations on the fields to read |
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| 214 | TYPE(FLD_N) :: sn_wndi, sn_wndj , sn_humi, sn_qsr ! informations about the fields to be read |
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| 215 | TYPE(FLD_N) :: sn_qlw , sn_tair , sn_prec, sn_snow ! " " |
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| 216 | TYPE(FLD_N) :: sn_slp , sn_uoatm, sn_voatm ! " " |
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| 217 | TYPE(FLD_N) :: sn_cc, sn_hpgi, sn_hpgj ! " " |
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| 218 | INTEGER :: ipka ! number of levels in the atmospheric variable |
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| 219 | NAMELIST/namsbc_blk/ ln_NCAR, ln_COARE_3p0, ln_COARE_3p6, ln_ECMWF, ln_ANDREAS, & ! bulk algorithm |
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| 220 | & rn_zqt, rn_zu, nn_iter_algo, ln_skin_cs, ln_skin_wl, & |
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| 221 | & rn_pfac, rn_efac, & |
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| 222 | & ln_crt_fbk, rn_stau_a, rn_stau_b, & ! current feedback |
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| 223 | & ln_humi_sph, ln_humi_dpt, ln_humi_rlh, ln_tair_pot, & |
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| 224 | & ln_Cx_ice_cst, rn_Cd_i, rn_Ce_i, rn_Ch_i, & |
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| 225 | & ln_Cx_ice_AN05, ln_Cx_ice_LU12, ln_Cx_ice_LG15, & |
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| 226 | & cn_dir, & |
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| 227 | & sn_wndi, sn_wndj, sn_qsr, sn_qlw , & ! input fields |
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| 228 | & sn_tair, sn_humi, sn_prec, sn_snow, sn_slp, & |
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| 229 | & sn_uoatm, sn_voatm, sn_cc, sn_hpgi, sn_hpgj |
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| 230 | |
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| 231 | ! cool-skin / warm-layer !LB |
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| 232 | !!--------------------------------------------------------------------- |
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| 233 | ! |
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| 234 | ! ! allocate sbc_blk_core array |
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| 235 | IF( sbc_blk_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'sbc_blk : unable to allocate standard arrays' ) |
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| 236 | ! |
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| 237 | #if defined key_si3 |
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| 238 | IF( sbc_blk_ice_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'sbc_blk : unable to allocate standard ice arrays' ) |
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| 239 | #endif |
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| 240 | ! |
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| 241 | ! !** read bulk namelist |
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| 242 | READ ( numnam_ref, namsbc_blk, IOSTAT = ios, ERR = 901) |
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| 243 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namsbc_blk in reference namelist' ) |
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| 244 | ! |
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| 245 | READ ( numnam_cfg, namsbc_blk, IOSTAT = ios, ERR = 902 ) |
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| 246 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namsbc_blk in configuration namelist' ) |
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| 247 | ! |
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| 248 | IF(lwm) WRITE( numond, namsbc_blk ) |
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| 249 | ! |
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| 250 | ! !** initialization of the chosen bulk formulae (+ check) |
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| 251 | ! !* select the bulk chosen in the namelist and check the choice |
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| 252 | ioptio = 0 |
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| 253 | IF( ln_NCAR ) THEN |
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| 254 | nblk = np_NCAR ; ioptio = ioptio + 1 |
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| 255 | ENDIF |
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| 256 | IF( ln_COARE_3p0 ) THEN |
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| 257 | nblk = np_COARE_3p0 ; ioptio = ioptio + 1 |
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| 258 | ENDIF |
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| 259 | IF( ln_COARE_3p6 ) THEN |
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| 260 | nblk = np_COARE_3p6 ; ioptio = ioptio + 1 |
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| 261 | ENDIF |
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| 262 | IF( ln_ECMWF ) THEN |
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| 263 | nblk = np_ECMWF ; ioptio = ioptio + 1 |
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| 264 | ENDIF |
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| 265 | IF( ln_ANDREAS ) THEN |
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| 266 | nblk = np_ANDREAS ; ioptio = ioptio + 1 |
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| 267 | ENDIF |
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| 268 | IF( ioptio /= 1 ) CALL ctl_stop( 'sbc_blk_init: Choose one and only one bulk algorithm' ) |
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| 269 | |
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| 270 | ! !** initialization of the cool-skin / warm-layer parametrization |
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| 271 | IF( ln_skin_cs .OR. ln_skin_wl ) THEN |
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| 272 | !! Some namelist sanity tests: |
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| 273 | IF( ln_NCAR ) & |
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| 274 | & CALL ctl_stop( 'sbc_blk_init: Cool-skin/warm-layer param. not compatible with NCAR algorithm' ) |
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| 275 | IF( ln_ANDREAS ) & |
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| 276 | & CALL ctl_stop( 'sbc_blk_init: Cool-skin/warm-layer param. not compatible with ANDREAS algorithm' ) |
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| 277 | !IF( nn_fsbc /= 1 ) & |
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| 278 | ! & CALL ctl_stop( 'sbc_blk_init: Please set "nn_fsbc" to 1 when using cool-skin/warm-layer param.') |
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| 279 | END IF |
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| 280 | |
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| 281 | IF( ln_skin_wl ) THEN |
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| 282 | !! Check if the frequency of downwelling solar flux input makes sense and if ln_dm2dc=T if it is daily! |
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| 283 | IF( (sn_qsr%freqh < 0.).OR.(sn_qsr%freqh > 24.) ) & |
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| 284 | & CALL ctl_stop( 'sbc_blk_init: Warm-layer param. (ln_skin_wl) not compatible with freq. of solar flux > daily' ) |
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| 285 | IF( (sn_qsr%freqh == 24.).AND.(.NOT. ln_dm2dc) ) & |
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| 286 | & CALL ctl_stop( 'sbc_blk_init: Please set ln_dm2dc=T for warm-layer param. (ln_skin_wl) to work properly' ) |
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| 287 | END IF |
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| 288 | |
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| 289 | ioptio = 0 |
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| 290 | IF( ln_humi_sph ) THEN |
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| 291 | nhumi = np_humi_sph ; ioptio = ioptio + 1 |
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| 292 | ENDIF |
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| 293 | IF( ln_humi_dpt ) THEN |
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| 294 | nhumi = np_humi_dpt ; ioptio = ioptio + 1 |
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| 295 | ENDIF |
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| 296 | IF( ln_humi_rlh ) THEN |
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| 297 | nhumi = np_humi_rlh ; ioptio = ioptio + 1 |
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| 298 | ENDIF |
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| 299 | IF( ioptio /= 1 ) CALL ctl_stop( 'sbc_blk_init: Choose one and only one type of air humidity' ) |
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| 300 | ! |
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| 301 | IF( ln_dm2dc ) THEN !* check: diurnal cycle on Qsr |
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| 302 | IF( sn_qsr%freqh /= 24. ) CALL ctl_stop( 'sbc_blk_init: ln_dm2dc=T only with daily short-wave input' ) |
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| 303 | IF( sn_qsr%ln_tint ) THEN |
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| 304 | CALL ctl_warn( 'sbc_blk_init: ln_dm2dc=T daily qsr time interpolation done by sbcdcy module', & |
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| 305 | & ' ==> We force time interpolation = .false. for qsr' ) |
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| 306 | sn_qsr%ln_tint = .false. |
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| 307 | ENDIF |
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| 308 | ENDIF |
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| 309 | |
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| 310 | #if defined key_si3 |
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| 311 | ioptio = 0 |
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| 312 | IF( ln_Cx_ice_cst ) THEN |
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| 313 | nblk_ice = np_ice_cst ; ioptio = ioptio + 1 |
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| 314 | ENDIF |
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| 315 | IF( ln_Cx_ice_AN05 ) THEN |
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| 316 | nblk_ice = np_ice_an05 ; ioptio = ioptio + 1 |
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| 317 | ENDIF |
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| 318 | IF( ln_Cx_ice_LU12 ) THEN |
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| 319 | nblk_ice = np_ice_lu12 ; ioptio = ioptio + 1 |
|---|
| 320 | ENDIF |
|---|
| 321 | IF( ln_Cx_ice_LG15 ) THEN |
|---|
| 322 | nblk_ice = np_ice_lg15 ; ioptio = ioptio + 1 |
|---|
| 323 | ENDIF |
|---|
| 324 | IF( ioptio /= 1 ) CALL ctl_stop( 'sbc_blk_init: Choose one and only one ice-atm bulk algorithm' ) |
|---|
| 325 | #endif |
|---|
| 326 | |
|---|
| 327 | |
|---|
| 328 | ! !* set the bulk structure |
|---|
| 329 | ! !- store namelist information in an array |
|---|
| 330 | ! |
|---|
| 331 | slf_i(jp_wndi ) = sn_wndi ; slf_i(jp_wndj ) = sn_wndj |
|---|
| 332 | slf_i(jp_qsr ) = sn_qsr ; slf_i(jp_qlw ) = sn_qlw |
|---|
| 333 | slf_i(jp_tair ) = sn_tair ; slf_i(jp_humi ) = sn_humi |
|---|
| 334 | slf_i(jp_prec ) = sn_prec ; slf_i(jp_snow ) = sn_snow |
|---|
| 335 | slf_i(jp_slp ) = sn_slp ; slf_i(jp_cc ) = sn_cc |
|---|
| 336 | slf_i(jp_uoatm) = sn_uoatm ; slf_i(jp_voatm) = sn_voatm |
|---|
| 337 | slf_i(jp_hpgi ) = sn_hpgi ; slf_i(jp_hpgj ) = sn_hpgj |
|---|
| 338 | ! |
|---|
| 339 | IF( .NOT. ln_abl ) THEN ! force to not use jp_hpgi and jp_hpgj, should already be done in namelist_* but we never know... |
|---|
| 340 | slf_i(jp_hpgi)%clname = 'NOT USED' |
|---|
| 341 | slf_i(jp_hpgj)%clname = 'NOT USED' |
|---|
| 342 | ENDIF |
|---|
| 343 | ! |
|---|
| 344 | ! !- allocate the bulk structure |
|---|
| 345 | ALLOCATE( sf(jpfld), STAT=ierror ) |
|---|
| 346 | IF( ierror > 0 ) CALL ctl_stop( 'STOP', 'sbc_blk_init: unable to allocate sf structure' ) |
|---|
| 347 | ! |
|---|
| 348 | ! !- fill the bulk structure with namelist informations |
|---|
| 349 | CALL fld_fill( sf, slf_i, cn_dir, 'sbc_blk_init', 'surface boundary condition -- bulk formulae', 'namsbc_blk' ) |
|---|
| 350 | sf(jp_wndi )%zsgn = -1._wp ; sf(jp_wndj )%zsgn = -1._wp ! vector field at T point: overwrite default definition of zsgn |
|---|
| 351 | sf(jp_uoatm)%zsgn = -1._wp ; sf(jp_voatm)%zsgn = -1._wp ! vector field at T point: overwrite default definition of zsgn |
|---|
| 352 | sf(jp_hpgi )%zsgn = -1._wp ; sf(jp_hpgj )%zsgn = -1._wp ! vector field at T point: overwrite default definition of zsgn |
|---|
| 353 | ! |
|---|
| 354 | DO jfpr= 1, jpfld |
|---|
| 355 | ! |
|---|
| 356 | IF( ln_abl .AND. & |
|---|
| 357 | & ( jfpr == jp_wndi .OR. jfpr == jp_wndj .OR. jfpr == jp_humi .OR. & |
|---|
| 358 | & jfpr == jp_hpgi .OR. jfpr == jp_hpgj .OR. jfpr == jp_tair ) ) THEN |
|---|
| 359 | ipka = jpka ! ABL: some fields are 3D input |
|---|
| 360 | ELSE |
|---|
| 361 | ipka = 1 |
|---|
| 362 | ENDIF |
|---|
| 363 | ! |
|---|
| 364 | ALLOCATE( sf(jfpr)%fnow(jpi,jpj,ipka) ) |
|---|
| 365 | ! |
|---|
| 366 | IF( TRIM(sf(jfpr)%clrootname) == 'NOT USED' ) THEN !-- not used field --! (only now allocated and set to default) |
|---|
| 367 | IF( jfpr == jp_slp ) THEN |
|---|
| 368 | sf(jfpr)%fnow(:,:,1:ipka) = 101325._wp ! use standard pressure in Pa |
|---|
| 369 | ELSEIF( jfpr == jp_prec .OR. jfpr == jp_snow .OR. jfpr == jp_uoatm .OR. jfpr == jp_voatm ) THEN |
|---|
| 370 | sf(jfpr)%fnow(:,:,1:ipka) = 0._wp ! no precip or no snow or no surface currents |
|---|
| 371 | ELSEIF( jfpr == jp_hpgi .OR. jfpr == jp_hpgj ) THEN |
|---|
| 372 | IF( .NOT. ln_abl ) THEN |
|---|
| 373 | DEALLOCATE( sf(jfpr)%fnow ) ! deallocate as not used in this case |
|---|
| 374 | ELSE |
|---|
| 375 | sf(jfpr)%fnow(:,:,1:ipka) = 0._wp |
|---|
| 376 | ENDIF |
|---|
| 377 | ELSEIF( jfpr == jp_cc ) THEN |
|---|
| 378 | sf(jp_cc)%fnow(:,:,1:ipka) = pp_cldf |
|---|
| 379 | ELSE |
|---|
| 380 | WRITE(ctmp1,*) 'sbc_blk_init: no default value defined for field number', jfpr |
|---|
| 381 | CALL ctl_stop( ctmp1 ) |
|---|
| 382 | ENDIF |
|---|
| 383 | ELSE !-- used field --! |
|---|
| 384 | IF( sf(jfpr)%ln_tint ) ALLOCATE( sf(jfpr)%fdta(jpi,jpj,ipka,2) ) ! allocate array for temporal interpolation |
|---|
| 385 | ! |
|---|
| 386 | IF( sf(jfpr)%freqh > 0. .AND. MOD( NINT(3600. * sf(jfpr)%freqh), nn_fsbc * NINT(rn_Dt) ) /= 0 ) & |
|---|
| 387 | & CALL ctl_warn( 'sbc_blk_init: sbcmod timestep rn_Dt*nn_fsbc is NOT a submultiple of atmospheric forcing frequency.', & |
|---|
| 388 | & ' This is not ideal. You should consider changing either rn_Dt or nn_fsbc value...' ) |
|---|
| 389 | ENDIF |
|---|
| 390 | END DO |
|---|
| 391 | ! |
|---|
| 392 | IF( ln_abl ) THEN ! ABL: read 3D fields for wind, temperature, humidity and pressure gradient |
|---|
| 393 | rn_zqt = ght_abl(2) ! set the bulk altitude to ABL first level |
|---|
| 394 | rn_zu = ght_abl(2) |
|---|
| 395 | IF(lwp) WRITE(numout,*) |
|---|
| 396 | IF(lwp) WRITE(numout,*) ' ABL formulation: overwrite rn_zqt & rn_zu with ABL first level altitude' |
|---|
| 397 | ENDIF |
|---|
| 398 | ! |
|---|
| 399 | ! |
|---|
| 400 | IF(lwp) THEN !** Control print |
|---|
| 401 | ! |
|---|
| 402 | WRITE(numout,*) !* namelist |
|---|
| 403 | WRITE(numout,*) ' Namelist namsbc_blk (other than data information):' |
|---|
| 404 | WRITE(numout,*) ' "NCAR" algorithm (Large and Yeager 2008) ln_NCAR = ', ln_NCAR |
|---|
| 405 | WRITE(numout,*) ' "COARE 3.0" algorithm (Fairall et al. 2003) ln_COARE_3p0 = ', ln_COARE_3p0 |
|---|
| 406 | WRITE(numout,*) ' "COARE 3.6" algorithm (Fairall 2018 + Edson al 2013) ln_COARE_3p6 = ', ln_COARE_3p6 |
|---|
| 407 | WRITE(numout,*) ' "ECMWF" algorithm (IFS cycle 45r1) ln_ECMWF = ', ln_ECMWF |
|---|
| 408 | WRITE(numout,*) ' "ANDREAS" algorithm (Andreas et al. 2015) ln_ANDREAS = ', ln_ANDREAS |
|---|
| 409 | WRITE(numout,*) ' Air temperature and humidity reference height (m) rn_zqt = ', rn_zqt |
|---|
| 410 | WRITE(numout,*) ' Wind vector reference height (m) rn_zu = ', rn_zu |
|---|
| 411 | WRITE(numout,*) ' factor applied on precipitation (total & snow) rn_pfac = ', rn_pfac |
|---|
| 412 | WRITE(numout,*) ' factor applied on evaporation rn_efac = ', rn_efac |
|---|
| 413 | WRITE(numout,*) ' (form absolute (=0) to relative winds(=1))' |
|---|
| 414 | WRITE(numout,*) ' use surface current feedback on wind stress ln_crt_fbk = ', ln_crt_fbk |
|---|
| 415 | IF(ln_crt_fbk) THEN |
|---|
| 416 | WRITE(numout,*) ' Renault et al. 2020, eq. 10: Stau = Alpha * Wnd + Beta' |
|---|
| 417 | WRITE(numout,*) ' Alpha rn_stau_a = ', rn_stau_a |
|---|
| 418 | WRITE(numout,*) ' Beta rn_stau_b = ', rn_stau_b |
|---|
| 419 | ENDIF |
|---|
| 420 | ! |
|---|
| 421 | WRITE(numout,*) |
|---|
| 422 | SELECT CASE( nblk ) !* Print the choice of bulk algorithm |
|---|
| 423 | CASE( np_NCAR ) ; WRITE(numout,*) ' ==>>> "NCAR" algorithm (Large and Yeager 2008)' |
|---|
| 424 | CASE( np_COARE_3p0 ) ; WRITE(numout,*) ' ==>>> "COARE 3.0" algorithm (Fairall et al. 2003)' |
|---|
| 425 | CASE( np_COARE_3p6 ) ; WRITE(numout,*) ' ==>>> "COARE 3.6" algorithm (Fairall 2018+Edson et al. 2013)' |
|---|
| 426 | CASE( np_ECMWF ) ; WRITE(numout,*) ' ==>>> "ECMWF" algorithm (IFS cycle 45r1)' |
|---|
| 427 | CASE( np_ANDREAS ) ; WRITE(numout,*) ' ==>>> "ANDREAS" algorithm (Andreas et al. 2015)' |
|---|
| 428 | END SELECT |
|---|
| 429 | ! |
|---|
| 430 | WRITE(numout,*) |
|---|
| 431 | WRITE(numout,*) ' use cool-skin parameterization (SSST) ln_skin_cs = ', ln_skin_cs |
|---|
| 432 | WRITE(numout,*) ' use warm-layer parameterization (SSST) ln_skin_wl = ', ln_skin_wl |
|---|
| 433 | ! |
|---|
| 434 | WRITE(numout,*) |
|---|
| 435 | SELECT CASE( nhumi ) !* Print the choice of air humidity |
|---|
| 436 | CASE( np_humi_sph ) ; WRITE(numout,*) ' ==>>> air humidity is SPECIFIC HUMIDITY [kg/kg]' |
|---|
| 437 | CASE( np_humi_dpt ) ; WRITE(numout,*) ' ==>>> air humidity is DEW-POINT TEMPERATURE [K]' |
|---|
| 438 | CASE( np_humi_rlh ) ; WRITE(numout,*) ' ==>>> air humidity is RELATIVE HUMIDITY [%]' |
|---|
| 439 | END SELECT |
|---|
| 440 | ! |
|---|
| 441 | !#LB: |
|---|
| 442 | #if defined key_si3 |
|---|
| 443 | IF( nn_ice > 0 ) THEN |
|---|
| 444 | WRITE(numout,*) |
|---|
| 445 | WRITE(numout,*) ' use constant ice-atm bulk transfer coeff. ln_Cx_ice_cst = ', ln_Cx_ice_cst |
|---|
| 446 | WRITE(numout,*) ' use ice-atm bulk coeff. from Andreas et al., 2005 ln_Cx_ice_AN05 = ', ln_Cx_ice_AN05 |
|---|
| 447 | WRITE(numout,*) ' use ice-atm bulk coeff. from Lupkes et al., 2012 ln_Cx_ice_LU12 = ', ln_Cx_ice_LU12 |
|---|
| 448 | WRITE(numout,*) ' use ice-atm bulk coeff. from Lupkes & Gryanik, 2015 ln_Cx_ice_LG15 = ', ln_Cx_ice_LG15 |
|---|
| 449 | ENDIF |
|---|
| 450 | WRITE(numout,*) |
|---|
| 451 | SELECT CASE( nblk_ice ) !* Print the choice of bulk algorithm |
|---|
| 452 | CASE( np_ice_cst ) |
|---|
| 453 | WRITE(numout,*) ' ==>>> Constant bulk transfer coefficients over sea-ice:' |
|---|
| 454 | WRITE(numout,*) ' => Cd_ice, Ce_ice, Ch_ice =', REAL(rn_Cd_i,4), REAL(rn_Ce_i,4), REAL(rn_Ch_i,4) |
|---|
| 455 | IF( (rn_Cd_i<0._wp).OR.(rn_Cd_i>1.E-2_wp).OR.(rn_Ce_i<0._wp).OR.(rn_Ce_i>1.E-2_wp).OR.(rn_Ch_i<0._wp).OR.(rn_Ch_i>1.E-2_wp) ) & |
|---|
| 456 | & CALL ctl_stop( 'Be realistic in your pick of Cd_ice, Ce_ice & Ch_ice ! (0 < Cx < 1.E-2)') |
|---|
| 457 | CASE( np_ice_an05 ) ; WRITE(numout,*) ' ==>>> bulk algo over ice: Andreas et al, 2005' |
|---|
| 458 | CASE( np_ice_lu12 ) ; WRITE(numout,*) ' ==>>> bulk algo over ice: Lupkes et al, 2012' |
|---|
| 459 | CASE( np_ice_lg15 ) ; WRITE(numout,*) ' ==>>> bulk algo over ice: Lupkes & Gryanik, 2015' |
|---|
| 460 | END SELECT |
|---|
| 461 | #endif |
|---|
| 462 | !#LB. |
|---|
| 463 | ! |
|---|
| 464 | ENDIF |
|---|
| 465 | ! |
|---|
| 466 | END SUBROUTINE sbc_blk_init |
|---|
| 467 | |
|---|
| 468 | |
|---|
| 469 | SUBROUTINE sbc_blk( kt ) |
|---|
| 470 | !!--------------------------------------------------------------------- |
|---|
| 471 | !! *** ROUTINE sbc_blk *** |
|---|
| 472 | !! |
|---|
| 473 | !! ** Purpose : provide at each time step the surface ocean fluxes |
|---|
| 474 | !! (momentum, heat, freshwater and runoff) |
|---|
| 475 | !! |
|---|
| 476 | !! ** Method : |
|---|
| 477 | !! (1) READ each fluxes in NetCDF files: |
|---|
| 478 | !! the wind velocity (i-component) at z=rn_zu (m/s) at T-point |
|---|
| 479 | !! the wind velocity (j-component) at z=rn_zu (m/s) at T-point |
|---|
| 480 | !! the specific humidity at z=rn_zqt (kg/kg) |
|---|
| 481 | !! the air temperature at z=rn_zqt (Kelvin) |
|---|
| 482 | !! the solar heat (W/m2) |
|---|
| 483 | !! the Long wave (W/m2) |
|---|
| 484 | !! the total precipitation (rain+snow) (Kg/m2/s) |
|---|
| 485 | !! the snow (solid precipitation) (kg/m2/s) |
|---|
| 486 | !! ABL dynamical forcing (i/j-components of either hpg or geostrophic winds) |
|---|
| 487 | !! (2) CALL blk_oce_1 and blk_oce_2 |
|---|
| 488 | !! |
|---|
| 489 | !! C A U T I O N : never mask the surface stress fields |
|---|
| 490 | !! the stress is assumed to be in the (i,j) mesh referential |
|---|
| 491 | !! |
|---|
| 492 | !! ** Action : defined at each time-step at the air-sea interface |
|---|
| 493 | !! - utau, vtau i- and j-component of the wind stress |
|---|
| 494 | !! - taum wind stress module at T-point |
|---|
| 495 | !! - wndm wind speed module at T-point over free ocean or leads in presence of sea-ice |
|---|
| 496 | !! - qns, qsr non-solar and solar heat fluxes |
|---|
| 497 | !! - emp upward mass flux (evapo. - precip.) |
|---|
| 498 | !! - sfx salt flux due to freezing/melting (non-zero only if ice is present) |
|---|
| 499 | !! |
|---|
| 500 | !! ** References : Large & Yeager, 2004 / Large & Yeager, 2008 |
|---|
| 501 | !! Brodeau et al. Ocean Modelling 2010 |
|---|
| 502 | !!---------------------------------------------------------------------- |
|---|
| 503 | INTEGER, INTENT(in) :: kt ! ocean time step |
|---|
| 504 | !!---------------------------------------------------------------------- |
|---|
| 505 | REAL(wp), DIMENSION(jpi,jpj) :: zssq, zcd_du, zsen, zlat, zevp, zpre, ztheta |
|---|
| 506 | REAL(wp) :: ztst |
|---|
| 507 | LOGICAL :: llerr |
|---|
| 508 | !!---------------------------------------------------------------------- |
|---|
| 509 | ! |
|---|
| 510 | CALL fld_read( kt, nn_fsbc, sf ) ! input fields provided at the current time-step |
|---|
| 511 | |
|---|
| 512 | ! Sanity/consistence test on humidity at first time step to detect potential screw-up: |
|---|
| 513 | IF( kt == nit000 ) THEN |
|---|
| 514 | ! mean humidity over ocean on proc |
|---|
| 515 | ztst = glob_sum( 'sbcblk', sf(jp_humi)%fnow(:,:,1) * e1e2t(:,:) * tmask(:,:,1) ) / glob_sum( 'sbcblk', e1e2t(:,:) * tmask(:,:,1) ) |
|---|
| 516 | llerr = .FALSE. |
|---|
| 517 | SELECT CASE( nhumi ) |
|---|
| 518 | CASE( np_humi_sph ) ! specific humidity => expect: 0. <= something < 0.065 [kg/kg] (0.061 is saturation at 45degC !!!) |
|---|
| 519 | IF( (ztst < 0._wp) .OR. (ztst > 0.065_wp) ) llerr = .TRUE. |
|---|
| 520 | CASE( np_humi_dpt ) ! dew-point temperature => expect: 110. <= something < 320. [K] |
|---|
| 521 | IF( (ztst < 110._wp) .OR. (ztst > 320._wp) ) llerr = .TRUE. |
|---|
| 522 | CASE( np_humi_rlh ) ! relative humidity => expect: 0. <= something < 100. [%] |
|---|
| 523 | IF( (ztst < 0._wp) .OR. (ztst > 100._wp) ) llerr = .TRUE. |
|---|
| 524 | END SELECT |
|---|
| 525 | IF(llerr) THEN |
|---|
| 526 | WRITE(ctmp1,'(" Error on mean humidity value: ",f10.5)') ztst |
|---|
| 527 | CALL ctl_stop( 'STOP', ctmp1, 'Something is wrong with air humidity!!!', & |
|---|
| 528 | & ' ==> check the unit in your input files' , & |
|---|
| 529 | & ' ==> check consistence of namelist choice: specific? relative? dew-point?', & |
|---|
| 530 | & ' ==> ln_humi_sph -> [kg/kg] | ln_humi_rlh -> [%] | ln_humi_dpt -> [K] !!!' ) |
|---|
| 531 | ENDIF |
|---|
| 532 | IF(lwp) THEN |
|---|
| 533 | WRITE(numout,*) '' |
|---|
| 534 | WRITE(numout,*) ' Global mean humidity at kt = nit000: ', ztst |
|---|
| 535 | WRITE(numout,*) ' === Sanity/consistence test on air humidity sucessfuly passed! ===' |
|---|
| 536 | WRITE(numout,*) '' |
|---|
| 537 | ENDIF |
|---|
| 538 | ENDIF !IF( kt == nit000 ) |
|---|
| 539 | ! ! compute the surface ocean fluxes using bulk formulea |
|---|
| 540 | IF( MOD( kt - 1, nn_fsbc ) == 0 ) THEN |
|---|
| 541 | |
|---|
| 542 | ! Specific humidity of air at z=rn_zqt |
|---|
| 543 | SELECT CASE( nhumi ) |
|---|
| 544 | CASE( np_humi_sph ) |
|---|
| 545 | q_air_zt(:,:) = sf(jp_humi )%fnow(:,:,1) ! what we read in file is already a spec. humidity! |
|---|
| 546 | CASE( np_humi_dpt ) |
|---|
| 547 | IF((kt==nit000).AND.lwp) WRITE(numout,*) ' *** sbc_blk() => computing q_air out of dew-point and P !' |
|---|
| 548 | q_air_zt(:,:) = q_sat( sf(jp_humi )%fnow(:,:,1), sf(jp_slp )%fnow(:,:,1) ) |
|---|
| 549 | CASE( np_humi_rlh ) |
|---|
| 550 | IF((kt==nit000).AND.lwp) WRITE(numout,*) ' *** sbc_blk() => computing q_air out of RH, t_air and slp !' !LBrm |
|---|
| 551 | q_air_zt(:,:) = q_air_rh( 0.01_wp*sf(jp_humi )%fnow(:,:,1), & |
|---|
| 552 | & sf(jp_tair )%fnow(:,:,1), sf(jp_slp )%fnow(:,:,1) ) !#LB: 0.01 => RH is % percent in file |
|---|
| 553 | END SELECT |
|---|
| 554 | |
|---|
| 555 | ! Potential temperature of air at z=rn_zqt (most reanalysis products provide absolute temp., not potential temp.) |
|---|
| 556 | IF( ln_tair_pot ) THEN |
|---|
| 557 | ! temperature read into file is already potential temperature, do nothing... |
|---|
| 558 | theta_air_zt(:,:) = sf(jp_tair )%fnow(:,:,1) |
|---|
| 559 | ELSE |
|---|
| 560 | ! temperature read into file is ABSOLUTE temperature (that's the case for ECMWF products for example...) |
|---|
| 561 | IF((kt==nit000).AND.lwp) WRITE(numout,*) ' *** sbc_blk() => air temperature converted from ABSOLUTE to POTENTIAL!' |
|---|
| 562 | zpre(:,:) = pres_temp( q_air_zt(:,:), sf(jp_slp)%fnow(:,:,1), rn_zu, pta=sf(jp_tair)%fnow(:,:,1) ) |
|---|
| 563 | theta_air_zt(:,:) = theta_exner( sf(jp_tair)%fnow(:,:,1), zpre(:,:) ) |
|---|
| 564 | ENDIF |
|---|
| 565 | ! |
|---|
| 566 | CALL blk_oce_1( kt, sf(jp_wndi )%fnow(:,:,1), sf(jp_wndj )%fnow(:,:,1), & ! <<= in |
|---|
| 567 | & theta_air_zt(:,:), q_air_zt(:,:), & ! <<= in |
|---|
| 568 | & sf(jp_slp )%fnow(:,:,1), sst_m, ssu_m, ssv_m, & ! <<= in |
|---|
| 569 | & sf(jp_uoatm)%fnow(:,:,1), sf(jp_voatm)%fnow(:,:,1), & ! <<= in |
|---|
| 570 | & sf(jp_qsr )%fnow(:,:,1), sf(jp_qlw )%fnow(:,:,1), & ! <<= in (wl/cs) |
|---|
| 571 | & tsk_m, zssq, zcd_du, zsen, zlat, zevp ) ! =>> out |
|---|
| 572 | |
|---|
| 573 | CALL blk_oce_2( theta_air_zt(:,:), & ! <<= in |
|---|
| 574 | & sf(jp_qlw )%fnow(:,:,1), sf(jp_prec )%fnow(:,:,1), & ! <<= in |
|---|
| 575 | & sf(jp_snow )%fnow(:,:,1), tsk_m, & ! <<= in |
|---|
| 576 | & zsen, zlat, zevp ) ! <=> in out |
|---|
| 577 | ENDIF |
|---|
| 578 | ! |
|---|
| 579 | #if defined key_cice |
|---|
| 580 | IF( MOD( kt - 1, nn_fsbc ) == 0 ) THEN |
|---|
| 581 | qlw_ice(:,:,1) = sf(jp_qlw )%fnow(:,:,1) |
|---|
| 582 | IF( ln_dm2dc ) THEN |
|---|
| 583 | qsr_ice(:,:,1) = sbc_dcy( sf(jp_qsr)%fnow(:,:,1) ) |
|---|
| 584 | ELSE |
|---|
| 585 | qsr_ice(:,:,1) = sf(jp_qsr)%fnow(:,:,1) |
|---|
| 586 | ENDIF |
|---|
| 587 | tatm_ice(:,:) = sf(jp_tair)%fnow(:,:,1) !#LB: should it be POTENTIAL temperature (theta_air_zt) instead ???? |
|---|
| 588 | qatm_ice(:,:) = q_air_zt(:,:) |
|---|
| 589 | tprecip(:,:) = sf(jp_prec)%fnow(:,:,1) * rn_pfac |
|---|
| 590 | sprecip(:,:) = sf(jp_snow)%fnow(:,:,1) * rn_pfac |
|---|
| 591 | wndi_ice(:,:) = sf(jp_wndi)%fnow(:,:,1) |
|---|
| 592 | wndj_ice(:,:) = sf(jp_wndj)%fnow(:,:,1) |
|---|
| 593 | ENDIF |
|---|
| 594 | #endif |
|---|
| 595 | ! |
|---|
| 596 | END SUBROUTINE sbc_blk |
|---|
| 597 | |
|---|
| 598 | |
|---|
| 599 | SUBROUTINE blk_oce_1( kt, pwndi, pwndj, ptair, pqair, & ! inp |
|---|
| 600 | & pslp , pst , pu , pv, & ! inp |
|---|
| 601 | & puatm, pvatm, pdqsr , pdqlw , & ! inp |
|---|
| 602 | & ptsk , pssq , pcd_du, psen, plat, pevp ) ! out |
|---|
| 603 | !!--------------------------------------------------------------------- |
|---|
| 604 | !! *** ROUTINE blk_oce_1 *** |
|---|
| 605 | !! |
|---|
| 606 | !! ** Purpose : if ln_blk=T, computes surface momentum, heat and freshwater fluxes |
|---|
| 607 | !! if ln_abl=T, computes Cd x |U|, Ch x |U|, Ce x |U| for ABL integration |
|---|
| 608 | !! |
|---|
| 609 | !! ** Method : bulk formulae using atmospheric fields from : |
|---|
| 610 | !! if ln_blk=T, atmospheric fields read in sbc_read |
|---|
| 611 | !! if ln_abl=T, the ABL model at previous time-step |
|---|
| 612 | !! |
|---|
| 613 | !! ** Outputs : - pssq : surface humidity used to compute latent heat flux (kg/kg) |
|---|
| 614 | !! - pcd_du : Cd x |dU| at T-points (m/s) |
|---|
| 615 | !! - psen : sensible heat flux (W/m^2) |
|---|
| 616 | !! - plat : latent heat flux (W/m^2) |
|---|
| 617 | !! - pevp : evaporation (mm/s) #lolo |
|---|
| 618 | !!--------------------------------------------------------------------- |
|---|
| 619 | INTEGER , INTENT(in ) :: kt ! time step index |
|---|
| 620 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pwndi ! atmospheric wind at T-point [m/s] |
|---|
| 621 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pwndj ! atmospheric wind at T-point [m/s] |
|---|
| 622 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pqair ! specific humidity at T-points [kg/kg] |
|---|
| 623 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: ptair ! potential temperature at T-points [Kelvin] |
|---|
| 624 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pslp ! sea-level pressure [Pa] |
|---|
| 625 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pst ! surface temperature [Celsius] |
|---|
| 626 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pu ! surface current at U-point (i-component) [m/s] |
|---|
| 627 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pv ! surface current at V-point (j-component) [m/s] |
|---|
| 628 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: puatm ! surface current seen by the atm at T-point (i-component) [m/s] |
|---|
| 629 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pvatm ! surface current seen by the atm at T-point (j-component) [m/s] |
|---|
| 630 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pdqsr ! downwelling solar (shortwave) radiation at surface [W/m^2] |
|---|
| 631 | REAL(wp), INTENT(in ), DIMENSION(:,:) :: pdqlw ! downwelling longwave radiation at surface [W/m^2] |
|---|
| 632 | REAL(wp), INTENT( out), DIMENSION(:,:) :: ptsk ! skin temp. (or SST if CS & WL not used) [Celsius] |
|---|
| 633 | REAL(wp), INTENT( out), DIMENSION(:,:) :: pssq ! specific humidity at pst [kg/kg] |
|---|
| 634 | REAL(wp), INTENT( out), DIMENSION(:,:) :: pcd_du |
|---|
| 635 | REAL(wp), INTENT( out), DIMENSION(:,:) :: psen |
|---|
| 636 | REAL(wp), INTENT( out), DIMENSION(:,:) :: plat |
|---|
| 637 | REAL(wp), INTENT( out), DIMENSION(:,:) :: pevp |
|---|
| 638 | ! |
|---|
| 639 | INTEGER :: ji, jj ! dummy loop indices |
|---|
| 640 | REAL(wp) :: zztmp ! local variable |
|---|
| 641 | REAL(wp) :: zstmax, zstau |
|---|
| 642 | #if defined key_cyclone |
|---|
| 643 | REAL(wp), DIMENSION(jpi,jpj) :: zwnd_i, zwnd_j ! wind speed components at T-point |
|---|
| 644 | #endif |
|---|
| 645 | REAL(wp), DIMENSION(jpi,jpj) :: ztau_i, ztau_j ! wind stress components at T-point |
|---|
| 646 | REAL(wp), DIMENSION(jpi,jpj) :: zU_zu ! bulk wind speed at height zu [m/s] |
|---|
| 647 | REAL(wp), DIMENSION(jpi,jpj) :: zcd_oce ! momentum transfert coefficient over ocean |
|---|
| 648 | REAL(wp), DIMENSION(jpi,jpj) :: zch_oce ! sensible heat transfert coefficient over ocean |
|---|
| 649 | REAL(wp), DIMENSION(jpi,jpj) :: zce_oce ! latent heat transfert coefficient over ocean |
|---|
| 650 | REAL(wp), DIMENSION(jpi,jpj) :: zsspt ! potential sea-surface temperature [K] |
|---|
| 651 | REAL(wp), DIMENSION(jpi,jpj) :: zpre, ztabs ! air pressure [Pa] & absolute temperature [K] |
|---|
| 652 | REAL(wp), DIMENSION(jpi,jpj) :: zztmp1, zztmp2 |
|---|
| 653 | !!--------------------------------------------------------------------- |
|---|
| 654 | ! |
|---|
| 655 | ! local scalars ( place there for vector optimisation purposes) |
|---|
| 656 | ! ! Temporary conversion from Celcius to Kelvin (and set minimum value far above 0 K) |
|---|
| 657 | ptsk(:,:) = pst(:,:) + rt0 ! by default: skin temperature = "bulk SST" (will remain this way if NCAR algorithm used!) |
|---|
| 658 | |
|---|
| 659 | ! sea surface potential temperature [K] |
|---|
| 660 | zsspt(:,:) = theta_exner( ptsk(:,:), pslp(:,:) ) |
|---|
| 661 | |
|---|
| 662 | ! --- cloud cover --- ! |
|---|
| 663 | cloud_fra(:,:) = sf(jp_cc)%fnow(:,:,1) |
|---|
| 664 | |
|---|
| 665 | ! ----------------------------------------------------------------------------- ! |
|---|
| 666 | ! 0 Wind components and module at T-point relative to the moving ocean ! |
|---|
| 667 | ! ----------------------------------------------------------------------------- ! |
|---|
| 668 | |
|---|
| 669 | ! ... components ( U10m - U_oce ) at T-point (unmasked) |
|---|
| 670 | #if defined key_cyclone |
|---|
| 671 | zwnd_i(:,:) = 0._wp |
|---|
| 672 | zwnd_j(:,:) = 0._wp |
|---|
| 673 | CALL wnd_cyc( kt, zwnd_i, zwnd_j ) ! add analytical tropical cyclone (Vincent et al. JGR 2012) |
|---|
| 674 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 675 | zwnd_i(ji,jj) = pwndi(ji,jj) + zwnd_i(ji,jj) |
|---|
| 676 | zwnd_j(ji,jj) = pwndj(ji,jj) + zwnd_j(ji,jj) |
|---|
| 677 | ! ... scalar wind at T-point (not masked) |
|---|
| 678 | wndm(ji,jj) = SQRT( zwnd_i(ji,jj) * zwnd_i(ji,jj) + zwnd_j(ji,jj) * zwnd_j(ji,jj) ) |
|---|
| 679 | END_2D |
|---|
| 680 | #else |
|---|
| 681 | ! ... scalar wind module at T-point (not masked) |
|---|
| 682 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 683 | wndm(ji,jj) = SQRT( pwndi(ji,jj) * pwndi(ji,jj) + pwndj(ji,jj) * pwndj(ji,jj) ) |
|---|
| 684 | END_2D |
|---|
| 685 | #endif |
|---|
| 686 | ! ----------------------------------------------------------------------------- ! |
|---|
| 687 | ! I Solar FLUX ! |
|---|
| 688 | ! ----------------------------------------------------------------------------- ! |
|---|
| 689 | |
|---|
| 690 | ! ocean albedo assumed to be constant + modify now Qsr to include the diurnal cycle ! Short Wave |
|---|
| 691 | zztmp = 1. - albo |
|---|
| 692 | IF( ln_dm2dc ) THEN |
|---|
| 693 | qsr(:,:) = zztmp * sbc_dcy( pdqsr(:,:) ) * tmask(:,:,1) |
|---|
| 694 | ELSE |
|---|
| 695 | qsr(:,:) = zztmp * pdqsr(:,:) * tmask(:,:,1) |
|---|
| 696 | ENDIF |
|---|
| 697 | |
|---|
| 698 | |
|---|
| 699 | ! ----------------------------------------------------------------------------- ! |
|---|
| 700 | ! II Turbulent FLUXES ! |
|---|
| 701 | ! ----------------------------------------------------------------------------- ! |
|---|
| 702 | |
|---|
| 703 | ! specific humidity at SST |
|---|
| 704 | pssq(:,:) = rdct_qsat_salt * q_sat( ptsk(:,:), pslp(:,:) ) |
|---|
| 705 | |
|---|
| 706 | IF( ln_skin_cs .OR. ln_skin_wl ) THEN |
|---|
| 707 | !! Backup "bulk SST" and associated spec. hum. |
|---|
| 708 | zztmp1(:,:) = zsspt(:,:) |
|---|
| 709 | zztmp2(:,:) = pssq(:,:) |
|---|
| 710 | ENDIF |
|---|
| 711 | |
|---|
| 712 | !! Time to call the user-selected bulk parameterization for |
|---|
| 713 | !! == transfer coefficients ==! Cd, Ch, Ce at T-point, and more... |
|---|
| 714 | SELECT CASE( nblk ) |
|---|
| 715 | |
|---|
| 716 | CASE( np_NCAR ) |
|---|
| 717 | CALL turb_ncar ( rn_zqt, rn_zu, zsspt, ptair, pssq, pqair, wndm, & |
|---|
| 718 | & zcd_oce, zch_oce, zce_oce, theta_zu, q_zu, zU_zu , & |
|---|
| 719 | & nb_iter=nn_iter_algo ) |
|---|
| 720 | ! |
|---|
| 721 | CASE( np_COARE_3p0 ) |
|---|
| 722 | CALL turb_coare3p0( kt, rn_zqt, rn_zu, zsspt, ptair, pssq, pqair, wndm, & |
|---|
| 723 | & ln_skin_cs, ln_skin_wl, & |
|---|
| 724 | & zcd_oce, zch_oce, zce_oce, theta_zu, q_zu, zU_zu, & |
|---|
| 725 | & nb_iter=nn_iter_algo, & |
|---|
| 726 | & Qsw=qsr(:,:), rad_lw=pdqlw(:,:), slp=pslp(:,:) ) |
|---|
| 727 | ! |
|---|
| 728 | CASE( np_COARE_3p6 ) |
|---|
| 729 | CALL turb_coare3p6( kt, rn_zqt, rn_zu, zsspt, ptair, pssq, pqair, wndm, & |
|---|
| 730 | & ln_skin_cs, ln_skin_wl, & |
|---|
| 731 | & zcd_oce, zch_oce, zce_oce, theta_zu, q_zu, zU_zu, & |
|---|
| 732 | & nb_iter=nn_iter_algo, & |
|---|
| 733 | & Qsw=qsr(:,:), rad_lw=pdqlw(:,:), slp=pslp(:,:) ) |
|---|
| 734 | ! |
|---|
| 735 | CASE( np_ECMWF ) |
|---|
| 736 | CALL turb_ecmwf ( kt, rn_zqt, rn_zu, zsspt, ptair, pssq, pqair, wndm, & |
|---|
| 737 | & ln_skin_cs, ln_skin_wl, & |
|---|
| 738 | & zcd_oce, zch_oce, zce_oce, theta_zu, q_zu, zU_zu, & |
|---|
| 739 | & nb_iter=nn_iter_algo, & |
|---|
| 740 | & Qsw=qsr(:,:), rad_lw=pdqlw(:,:), slp=pslp(:,:) ) |
|---|
| 741 | ! |
|---|
| 742 | CASE( np_ANDREAS ) |
|---|
| 743 | CALL turb_andreas ( rn_zqt, rn_zu, zsspt, ptair, pssq, pqair, wndm, & |
|---|
| 744 | & zcd_oce, zch_oce, zce_oce, theta_zu, q_zu, zU_zu , & |
|---|
| 745 | & nb_iter=nn_iter_algo ) |
|---|
| 746 | ! |
|---|
| 747 | CASE DEFAULT |
|---|
| 748 | CALL ctl_stop( 'STOP', 'sbc_oce: non-existing bulk parameterizaton selected' ) |
|---|
| 749 | ! |
|---|
| 750 | END SELECT |
|---|
| 751 | |
|---|
| 752 | IF( iom_use('Cd_oce') ) CALL iom_put("Cd_oce", zcd_oce * tmask(:,:,1)) |
|---|
| 753 | IF( iom_use('Ce_oce') ) CALL iom_put("Ce_oce", zce_oce * tmask(:,:,1)) |
|---|
| 754 | IF( iom_use('Ch_oce') ) CALL iom_put("Ch_oce", zch_oce * tmask(:,:,1)) |
|---|
| 755 | !! LB: mainly here for debugging purpose: |
|---|
| 756 | IF( iom_use('theta_zt') ) CALL iom_put("theta_zt", (ptair-rt0) * tmask(:,:,1)) ! potential temperature at z=zt |
|---|
| 757 | IF( iom_use('q_zt') ) CALL iom_put("q_zt", pqair * tmask(:,:,1)) ! specific humidity " |
|---|
| 758 | IF( iom_use('theta_zu') ) CALL iom_put("theta_zu", (theta_zu -rt0) * tmask(:,:,1)) ! potential temperature at z=zu |
|---|
| 759 | IF( iom_use('q_zu') ) CALL iom_put("q_zu", q_zu * tmask(:,:,1)) ! specific humidity " |
|---|
| 760 | IF( iom_use('ssq') ) CALL iom_put("ssq", pssq * tmask(:,:,1)) ! saturation specific humidity at z=0 |
|---|
| 761 | IF( iom_use('wspd_blk') ) CALL iom_put("wspd_blk", zU_zu * tmask(:,:,1)) ! bulk wind speed at z=zu |
|---|
| 762 | |
|---|
| 763 | IF( ln_skin_cs .OR. ln_skin_wl ) THEN |
|---|
| 764 | !! In the presence of sea-ice we forget about the cool-skin/warm-layer update of zsspt, pssq & ptsk: |
|---|
| 765 | WHERE ( fr_i(:,:) > 0.001_wp ) |
|---|
| 766 | ! sea-ice present, we forget about the update, using what we backed up before call to turb_*() |
|---|
| 767 | zsspt(:,:) = zztmp1(:,:) |
|---|
| 768 | pssq(:,:) = zztmp2(:,:) |
|---|
| 769 | END WHERE |
|---|
| 770 | ! apply potential temperature increment to abolute SST |
|---|
| 771 | ptsk(:,:) = ptsk(:,:) + ( zsspt(:,:) - zztmp1(:,:) ) |
|---|
| 772 | END IF |
|---|
| 773 | |
|---|
| 774 | ! Turbulent fluxes over ocean => BULK_FORMULA @ sbc_phy.F90 |
|---|
| 775 | ! ------------------------------------------------------------- |
|---|
| 776 | |
|---|
| 777 | IF( ln_abl ) THEN !== ABL formulation ==! multiplication by rho_air and turbulent fluxes computation done in ablstp |
|---|
| 778 | |
|---|
| 779 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 780 | zztmp = zU_zu(ji,jj) |
|---|
| 781 | wndm(ji,jj) = zztmp ! Store zU_zu in wndm to compute ustar2 in ablmod |
|---|
| 782 | pcd_du(ji,jj) = zztmp * zcd_oce(ji,jj) |
|---|
| 783 | psen(ji,jj) = zztmp * zch_oce(ji,jj) |
|---|
| 784 | pevp(ji,jj) = zztmp * zce_oce(ji,jj) |
|---|
| 785 | zpre(ji,jj) = pres_temp( pqair(ji,jj), pslp(ji,jj), rn_zu, ptpot=ptair(ji,jj), pta=ztabs(ji,jj) ) |
|---|
| 786 | rhoa(ji,jj) = rho_air( ztabs(ji,jj), pqair(ji,jj), zpre(ji,jj) ) |
|---|
| 787 | END_2D |
|---|
| 788 | |
|---|
| 789 | ELSE !== BLK formulation ==! turbulent fluxes computation |
|---|
| 790 | |
|---|
| 791 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 792 | zpre(ji,jj) = pres_temp( q_zu(ji,jj), pslp(ji,jj), rn_zu, ptpot=theta_zu(ji,jj), pta=ztabs(ji,jj) ) |
|---|
| 793 | rhoa(ji,jj) = rho_air( ztabs(ji,jj), q_zu(ji,jj), zpre(ji,jj) ) |
|---|
| 794 | END_2D |
|---|
| 795 | |
|---|
| 796 | CALL BULK_FORMULA( rn_zu, zsspt(:,:), pssq(:,:), theta_zu(:,:), q_zu(:,:), & |
|---|
| 797 | & zcd_oce(:,:), zch_oce(:,:), zce_oce(:,:), & |
|---|
| 798 | & wndm(:,:), zU_zu(:,:), pslp(:,:), rhoa(:,:), & |
|---|
| 799 | & taum(:,:), psen(:,:), plat(:,:), & |
|---|
| 800 | & pEvap=pevp(:,:), pfact_evap=rn_efac ) |
|---|
| 801 | |
|---|
| 802 | psen(:,:) = psen(:,:) * tmask(:,:,1) |
|---|
| 803 | plat(:,:) = plat(:,:) * tmask(:,:,1) |
|---|
| 804 | taum(:,:) = taum(:,:) * tmask(:,:,1) |
|---|
| 805 | pevp(:,:) = pevp(:,:) * tmask(:,:,1) |
|---|
| 806 | |
|---|
| 807 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 808 | IF( wndm(ji,jj) > 0._wp ) THEN |
|---|
| 809 | zztmp = taum(ji,jj) / wndm(ji,jj) |
|---|
| 810 | #if defined key_cyclone |
|---|
| 811 | ztau_i(ji,jj) = zztmp * zwnd_i(ji,jj) |
|---|
| 812 | ztau_j(ji,jj) = zztmp * zwnd_j(ji,jj) |
|---|
| 813 | #else |
|---|
| 814 | ztau_i(ji,jj) = zztmp * pwndi(ji,jj) |
|---|
| 815 | ztau_j(ji,jj) = zztmp * pwndj(ji,jj) |
|---|
| 816 | #endif |
|---|
| 817 | ELSE |
|---|
| 818 | ztau_i(ji,jj) = 0._wp |
|---|
| 819 | ztau_j(ji,jj) = 0._wp |
|---|
| 820 | ENDIF |
|---|
| 821 | END_2D |
|---|
| 822 | |
|---|
| 823 | IF( ln_crt_fbk ) THEN ! aply eq. 10 and 11 of Renault et al. 2020 (doi: 10.1029/2019MS001715) |
|---|
| 824 | zstmax = MIN( rn_stau_a * 3._wp + rn_stau_b, 0._wp ) ! set the max value of Stau corresponding to a wind of 3 m/s (<0) |
|---|
| 825 | DO_2D( 0, 1, 0, 1 ) ! end at jpj and jpi, as ztau_j(ji,jj+1) ztau_i(ji+1,jj) used in the next loop |
|---|
| 826 | zstau = MIN( rn_stau_a * wndm(ji,jj) + rn_stau_b, zstmax ) ! stau (<0) must be smaller than zstmax |
|---|
| 827 | ztau_i(ji,jj) = ztau_i(ji,jj) + zstau * ( 0.5_wp * ( pu(ji-1,jj ) + pu(ji,jj) ) - puatm(ji,jj) ) |
|---|
| 828 | ztau_j(ji,jj) = ztau_j(ji,jj) + zstau * ( 0.5_wp * ( pv(ji ,jj-1) + pv(ji,jj) ) - pvatm(ji,jj) ) |
|---|
| 829 | taum(ji,jj) = SQRT( ztau_i(ji,jj) * ztau_i(ji,jj) + ztau_j(ji,jj) * ztau_j(ji,jj) ) |
|---|
| 830 | END_2D |
|---|
| 831 | ENDIF |
|---|
| 832 | |
|---|
| 833 | ! ... utau, vtau at U- and V_points, resp. |
|---|
| 834 | ! Note the use of 0.5*(2-umask) in order to unmask the stress along coastlines |
|---|
| 835 | ! Note that coastal wind stress is not used in the code... so this extra care has no effect |
|---|
| 836 | DO_2D( 0, 0, 0, 0 ) ! start loop at 2, in case ln_crt_fbk = T |
|---|
| 837 | utau(ji,jj) = 0.5 * ( 2. - umask(ji,jj,1) ) * ( ztau_i(ji,jj) + ztau_i(ji+1,jj ) ) & |
|---|
| 838 | & * MAX(tmask(ji,jj,1),tmask(ji+1,jj,1)) |
|---|
| 839 | vtau(ji,jj) = 0.5 * ( 2. - vmask(ji,jj,1) ) * ( ztau_j(ji,jj) + ztau_j(ji ,jj+1) ) & |
|---|
| 840 | & * MAX(tmask(ji,jj,1),tmask(ji,jj+1,1)) |
|---|
| 841 | END_2D |
|---|
| 842 | |
|---|
| 843 | IF( ln_crt_fbk ) THEN |
|---|
| 844 | CALL lbc_lnk( 'sbcblk', utau, 'U', -1._wp, vtau, 'V', -1._wp, taum, 'T', 1._wp ) |
|---|
| 845 | ELSE |
|---|
| 846 | CALL lbc_lnk( 'sbcblk', utau, 'U', -1._wp, vtau, 'V', -1._wp ) |
|---|
| 847 | ENDIF |
|---|
| 848 | |
|---|
| 849 | ! Saving open-ocean wind-stress (module and components) on T-points: |
|---|
| 850 | CALL iom_put( "taum_oce", taum(:,:)*tmask(:,:,1) ) ! output wind stress module |
|---|
| 851 | !#LB: These 2 lines below mostly here for 'STATION_ASF' test-case, otherwize "utau" (U-grid) and vtau" (V-grid) does the job in: [DYN/dynatf.F90]) |
|---|
| 852 | CALL iom_put( "utau_oce", ztau_i(:,:)*tmask(:,:,1) ) ! utau at T-points! |
|---|
| 853 | CALL iom_put( "vtau_oce", ztau_j(:,:)*tmask(:,:,1) ) ! vtau at T-points! |
|---|
| 854 | |
|---|
| 855 | IF(sn_cfctl%l_prtctl) THEN |
|---|
| 856 | CALL prt_ctl( tab2d_1=pssq , clinfo1=' blk_oce_1: pssq : ') |
|---|
| 857 | CALL prt_ctl( tab2d_1=wndm , clinfo1=' blk_oce_1: wndm : ') |
|---|
| 858 | CALL prt_ctl( tab2d_1=utau , clinfo1=' blk_oce_1: utau : ', mask1=umask, & |
|---|
| 859 | & tab2d_2=vtau , clinfo2=' vtau : ', mask2=vmask ) |
|---|
| 860 | CALL prt_ctl( tab2d_1=zcd_oce, clinfo1=' blk_oce_1: Cd : ') |
|---|
| 861 | ENDIF |
|---|
| 862 | ! |
|---|
| 863 | ENDIF ! ln_blk / ln_abl |
|---|
| 864 | |
|---|
| 865 | ptsk(:,:) = ( ptsk(:,:) - rt0 ) * tmask(:,:,1) ! Back to Celsius |
|---|
| 866 | |
|---|
| 867 | IF( ln_skin_cs .OR. ln_skin_wl ) THEN |
|---|
| 868 | CALL iom_put( "t_skin" , ptsk ) ! T_skin in Celsius |
|---|
| 869 | CALL iom_put( "dt_skin" , ptsk - pst ) ! T_skin - SST temperature difference |
|---|
| 870 | ENDIF |
|---|
| 871 | ! |
|---|
| 872 | END SUBROUTINE blk_oce_1 |
|---|
| 873 | |
|---|
| 874 | |
|---|
| 875 | SUBROUTINE blk_oce_2( ptair, pdqlw, pprec, psnow, & ! <<= in |
|---|
| 876 | & ptsk, psen, plat, pevp ) ! <<= in |
|---|
| 877 | !!--------------------------------------------------------------------- |
|---|
| 878 | !! *** ROUTINE blk_oce_2 *** |
|---|
| 879 | !! |
|---|
| 880 | !! ** Purpose : finalize the momentum, heat and freshwater fluxes computation |
|---|
| 881 | !! at the ocean surface at each time step knowing Cd, Ch, Ce and |
|---|
| 882 | !! atmospheric variables (from ABL or external data) |
|---|
| 883 | !! |
|---|
| 884 | !! ** Outputs : - utau : i-component of the stress at U-point (N/m2) |
|---|
| 885 | !! - vtau : j-component of the stress at V-point (N/m2) |
|---|
| 886 | !! - taum : Wind stress module at T-point (N/m2) |
|---|
| 887 | !! - wndm : Wind speed module at T-point (m/s) |
|---|
| 888 | !! - qsr : Solar heat flux over the ocean (W/m2) |
|---|
| 889 | !! - qns : Non Solar heat flux over the ocean (W/m2) |
|---|
| 890 | !! - emp : evaporation minus precipitation (kg/m2/s) |
|---|
| 891 | !!--------------------------------------------------------------------- |
|---|
| 892 | REAL(wp), INTENT(in), DIMENSION(:,:) :: ptair ! potential temperature of air #LB: confirm! |
|---|
| 893 | REAL(wp), INTENT(in), DIMENSION(:,:) :: pdqlw ! downwelling longwave radiation at surface [W/m^2] |
|---|
| 894 | REAL(wp), INTENT(in), DIMENSION(:,:) :: pprec |
|---|
| 895 | REAL(wp), INTENT(in), DIMENSION(:,:) :: psnow |
|---|
| 896 | REAL(wp), INTENT(in), DIMENSION(:,:) :: ptsk ! SKIN surface temperature [Celsius] |
|---|
| 897 | REAL(wp), INTENT(in), DIMENSION(:,:) :: psen |
|---|
| 898 | REAL(wp), INTENT(in), DIMENSION(:,:) :: plat |
|---|
| 899 | REAL(wp), INTENT(in), DIMENSION(:,:) :: pevp |
|---|
| 900 | ! |
|---|
| 901 | INTEGER :: ji, jj ! dummy loop indices |
|---|
| 902 | REAL(wp) :: zztmp,zz1,zz2,zz3 ! local variable |
|---|
| 903 | REAL(wp), DIMENSION(jpi,jpj) :: zqlw ! net long wave radiative heat flux |
|---|
| 904 | REAL(wp), DIMENSION(jpi,jpj) :: zcptrain, zcptsnw, zcptn ! Heat content per unit mass (J/kg) |
|---|
| 905 | !!--------------------------------------------------------------------- |
|---|
| 906 | ! |
|---|
| 907 | ! Heat content per unit mass (J/kg) |
|---|
| 908 | zcptrain(:,:) = ( ptair - rt0 ) * rcp * tmask(:,:,1) |
|---|
| 909 | zcptsnw (:,:) = ( MIN( ptair, rt0 ) - rt0 ) * rcpi * tmask(:,:,1) |
|---|
| 910 | zcptn (:,:) = ptsk * rcp * tmask(:,:,1) |
|---|
| 911 | ! |
|---|
| 912 | ! ----------------------------------------------------------------------------- ! |
|---|
| 913 | ! III Net longwave radiative FLUX ! |
|---|
| 914 | ! ----------------------------------------------------------------------------- ! |
|---|
| 915 | !! #LB: now moved after Turbulent fluxes because must use the skin temperature rather than bulk SST |
|---|
| 916 | !! (ptsk is skin temperature if ln_skin_cs==.TRUE. .OR. ln_skin_wl==.TRUE.) |
|---|
| 917 | zqlw(:,:) = qlw_net( pdqlw(:,:), ptsk(:,:)+rt0 ) |
|---|
| 918 | |
|---|
| 919 | ! ----------------------------------------------------------------------------- ! |
|---|
| 920 | ! IV Total FLUXES ! |
|---|
| 921 | ! ----------------------------------------------------------------------------- ! |
|---|
| 922 | ! |
|---|
| 923 | emp (:,:) = ( pevp(:,:) - pprec(:,:) * rn_pfac ) * tmask(:,:,1) ! mass flux (evap. - precip.) |
|---|
| 924 | ! |
|---|
| 925 | qns(:,:) = zqlw(:,:) + psen(:,:) + plat(:,:) & ! Downward Non Solar |
|---|
| 926 | & - psnow(:,:) * rn_pfac * rLfus & ! remove latent melting heat for solid precip |
|---|
| 927 | & - pevp(:,:) * zcptn(:,:) & ! remove evap heat content at SST |
|---|
| 928 | & + ( pprec(:,:) - psnow(:,:) ) * rn_pfac * zcptrain(:,:) & ! add liquid precip heat content at Tair |
|---|
| 929 | & + psnow(:,:) * rn_pfac * zcptsnw(:,:) ! add solid precip heat content at min(Tair,Tsnow) |
|---|
| 930 | qns(:,:) = qns(:,:) * tmask(:,:,1) |
|---|
| 931 | ! |
|---|
| 932 | #if defined key_si3 |
|---|
| 933 | qns_oce(:,:) = zqlw(:,:) + psen(:,:) + plat(:,:) ! non solar without emp (only needed by SI3) |
|---|
| 934 | qsr_oce(:,:) = qsr(:,:) |
|---|
| 935 | #endif |
|---|
| 936 | ! |
|---|
| 937 | CALL iom_put( "rho_air" , rhoa*tmask(:,:,1) ) ! output air density [kg/m^3] |
|---|
| 938 | CALL iom_put( "evap_oce" , pevp ) ! evaporation |
|---|
| 939 | CALL iom_put( "qlw_oce" , zqlw ) ! output downward longwave heat over the ocean |
|---|
| 940 | CALL iom_put( "qsb_oce" , psen ) ! output downward sensible heat over the ocean |
|---|
| 941 | CALL iom_put( "qla_oce" , plat ) ! output downward latent heat over the ocean |
|---|
| 942 | tprecip(:,:) = pprec(:,:) * rn_pfac * tmask(:,:,1) ! output total precipitation [kg/m2/s] |
|---|
| 943 | sprecip(:,:) = psnow(:,:) * rn_pfac * tmask(:,:,1) ! output solid precipitation [kg/m2/s] |
|---|
| 944 | CALL iom_put( 'snowpre', sprecip ) ! Snow |
|---|
| 945 | CALL iom_put( 'precip' , tprecip ) ! Total precipitation |
|---|
| 946 | ! |
|---|
| 947 | IF ( nn_ice == 0 ) THEN |
|---|
| 948 | CALL iom_put( "qemp_oce" , qns-zqlw-psen-plat ) ! output downward heat content of E-P over the ocean |
|---|
| 949 | CALL iom_put( "qns_oce" , qns ) ! output downward non solar heat over the ocean |
|---|
| 950 | CALL iom_put( "qsr_oce" , qsr ) ! output downward solar heat over the ocean |
|---|
| 951 | CALL iom_put( "qt_oce" , qns+qsr ) ! output total downward heat over the ocean |
|---|
| 952 | ENDIF |
|---|
| 953 | ! |
|---|
| 954 | IF(sn_cfctl%l_prtctl) THEN |
|---|
| 955 | CALL prt_ctl(tab2d_1=zqlw , clinfo1=' blk_oce_2: zqlw : ') |
|---|
| 956 | CALL prt_ctl(tab2d_1=psen , clinfo1=' blk_oce_2: psen : ' ) |
|---|
| 957 | CALL prt_ctl(tab2d_1=plat , clinfo1=' blk_oce_2: plat : ' ) |
|---|
| 958 | CALL prt_ctl(tab2d_1=qns , clinfo1=' blk_oce_2: qns : ' ) |
|---|
| 959 | CALL prt_ctl(tab2d_1=emp , clinfo1=' blk_oce_2: emp : ') |
|---|
| 960 | ENDIF |
|---|
| 961 | ! |
|---|
| 962 | END SUBROUTINE blk_oce_2 |
|---|
| 963 | |
|---|
| 964 | |
|---|
| 965 | #if defined key_si3 |
|---|
| 966 | !!---------------------------------------------------------------------- |
|---|
| 967 | !! 'key_si3' SI3 sea-ice model |
|---|
| 968 | !!---------------------------------------------------------------------- |
|---|
| 969 | !! blk_ice_1 : provide the air-ice stress |
|---|
| 970 | !! blk_ice_2 : provide the heat and mass fluxes at air-ice interface |
|---|
| 971 | !! blk_ice_qcn : provide ice surface temperature and snow/ice conduction flux (emulating conduction flux) |
|---|
| 972 | !!---------------------------------------------------------------------- |
|---|
| 973 | |
|---|
| 974 | SUBROUTINE blk_ice_1( pwndi, pwndj, ptair, pqair, pslp , puice, pvice, ptsui, & ! inputs |
|---|
| 975 | & putaui, pvtaui, pseni, pevpi, pssqi, pcd_dui ) ! optional outputs |
|---|
| 976 | !!--------------------------------------------------------------------- |
|---|
| 977 | !! *** ROUTINE blk_ice_1 *** |
|---|
| 978 | !! |
|---|
| 979 | !! ** Purpose : provide the surface boundary condition over sea-ice |
|---|
| 980 | !! |
|---|
| 981 | !! ** Method : compute momentum using bulk formulation |
|---|
| 982 | !! formulea, ice variables and read atmospheric fields. |
|---|
| 983 | !! NB: ice drag coefficient is assumed to be a constant |
|---|
| 984 | !!--------------------------------------------------------------------- |
|---|
| 985 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: pslp ! sea-level pressure [Pa] |
|---|
| 986 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: pwndi ! atmospheric wind at T-point [m/s] |
|---|
| 987 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: pwndj ! atmospheric wind at T-point [m/s] |
|---|
| 988 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: ptair ! atmospheric potential temperature at T-point [K] |
|---|
| 989 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: pqair ! atmospheric specific humidity at T-point [kg/kg] |
|---|
| 990 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: puice ! sea-ice velocity on I or C grid [m/s] |
|---|
| 991 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: pvice ! " |
|---|
| 992 | REAL(wp) , INTENT(in ), DIMENSION(:,: ) :: ptsui ! sea-ice surface temperature [K] |
|---|
| 993 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: putaui ! if ln_blk |
|---|
| 994 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: pvtaui ! if ln_blk |
|---|
| 995 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: pseni ! if ln_abl |
|---|
| 996 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: pevpi ! if ln_abl |
|---|
| 997 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: pssqi ! if ln_abl |
|---|
| 998 | REAL(wp) , INTENT( out), DIMENSION(:,: ), OPTIONAL :: pcd_dui ! if ln_abl |
|---|
| 999 | ! |
|---|
| 1000 | INTEGER :: ji, jj ! dummy loop indices |
|---|
| 1001 | REAL(wp) :: zootm_su ! sea-ice surface mean temperature |
|---|
| 1002 | REAL(wp) :: zztmp1, zztmp2 ! temporary scalars |
|---|
| 1003 | REAL(wp), DIMENSION(jpi,jpj) :: ztmp, zsipt ! temporary array |
|---|
| 1004 | !!--------------------------------------------------------------------- |
|---|
| 1005 | ! |
|---|
| 1006 | ! ------------------------------------------------------------ ! |
|---|
| 1007 | ! Wind module relative to the moving ice ( U10m - U_ice ) ! |
|---|
| 1008 | ! ------------------------------------------------------------ ! |
|---|
| 1009 | ! C-grid ice dynamics : U & V-points (same as ocean) |
|---|
| 1010 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 1011 | wndm_ice(ji,jj) = SQRT( pwndi(ji,jj) * pwndi(ji,jj) + pwndj(ji,jj) * pwndj(ji,jj) ) |
|---|
| 1012 | END_2D |
|---|
| 1013 | ! |
|---|
| 1014 | ! potential sea-ice surface temperature [K] |
|---|
| 1015 | zsipt(:,:) = theta_exner( ptsui(:,:), pslp(:,:) ) |
|---|
| 1016 | |
|---|
| 1017 | ! sea-ice <-> atmosphere bulk transfer coefficients |
|---|
| 1018 | SELECT CASE( nblk_ice ) |
|---|
| 1019 | |
|---|
| 1020 | CASE( np_ice_cst ) |
|---|
| 1021 | ! Constant bulk transfer coefficients over sea-ice: |
|---|
| 1022 | Cd_ice(:,:) = rn_Cd_i |
|---|
| 1023 | Ch_ice(:,:) = rn_Ch_i |
|---|
| 1024 | Ce_ice(:,:) = rn_Ce_i |
|---|
| 1025 | ! no height adjustment, keeping zt values: |
|---|
| 1026 | theta_zu_i(:,:) = ptair(:,:) |
|---|
| 1027 | q_zu_i(:,:) = pqair(:,:) |
|---|
| 1028 | |
|---|
| 1029 | CASE( np_ice_an05 ) ! calculate new drag from Lupkes(2015) equations |
|---|
| 1030 | ztmp(:,:) = q_sat( ptsui(:,:), pslp(:,:), l_ice=.TRUE. ) ! temporary array for SSQ |
|---|
| 1031 | CALL turb_ice_an05( rn_zqt, rn_zu, zsipt, ptair, ztmp, pqair, wndm_ice, & |
|---|
| 1032 | & Cd_ice, Ch_ice, Ce_ice, theta_zu_i, q_zu_i ) |
|---|
| 1033 | !! |
|---|
| 1034 | CASE( np_ice_lu12 ) |
|---|
| 1035 | ztmp(:,:) = q_sat( ptsui(:,:), pslp(:,:), l_ice=.TRUE. ) ! temporary array for SSQ |
|---|
| 1036 | CALL turb_ice_lu12( rn_zqt, rn_zu, zsipt, ptair, ztmp, pqair, wndm_ice, fr_i, & |
|---|
| 1037 | & Cd_ice, Ch_ice, Ce_ice, theta_zu_i, q_zu_i ) |
|---|
| 1038 | !! |
|---|
| 1039 | CASE( np_ice_lg15 ) ! calculate new drag from Lupkes(2015) equations |
|---|
| 1040 | ztmp(:,:) = q_sat( ptsui(:,:), pslp(:,:), l_ice=.TRUE. ) ! temporary array for SSQ |
|---|
| 1041 | CALL turb_ice_lg15( rn_zqt, rn_zu, zsipt, ptair, ztmp, pqair, wndm_ice, fr_i, & |
|---|
| 1042 | & Cd_ice, Ch_ice, Ce_ice, theta_zu_i, q_zu_i ) |
|---|
| 1043 | !! |
|---|
| 1044 | END SELECT |
|---|
| 1045 | |
|---|
| 1046 | IF( iom_use('Cd_ice').OR.iom_use('Ce_ice').OR.iom_use('Ch_ice').OR.iom_use('taum_ice').OR.iom_use('utau_ice').OR.iom_use('vtau_ice') ) & |
|---|
| 1047 | & ztmp(:,:) = ( 1._wp - MAX(0._wp, SIGN( 1._wp, 1.E-6_wp - fr_i )) )*tmask(:,:,1) ! mask for presence of ice ! |
|---|
| 1048 | |
|---|
| 1049 | IF( iom_use('Cd_ice') ) CALL iom_put("Cd_ice", Cd_ice*ztmp) |
|---|
| 1050 | IF( iom_use('Ce_ice') ) CALL iom_put("Ce_ice", Ce_ice*ztmp) |
|---|
| 1051 | IF( iom_use('Ch_ice') ) CALL iom_put("Ch_ice", Ch_ice*ztmp) |
|---|
| 1052 | |
|---|
| 1053 | |
|---|
| 1054 | IF( ln_blk ) THEN |
|---|
| 1055 | ! ---------------------------------------------------- ! |
|---|
| 1056 | ! Wind stress relative to nonmoving ice ( U10m ) ! |
|---|
| 1057 | ! ---------------------------------------------------- ! |
|---|
| 1058 | ! supress moving ice in wind stress computation as we don't know how to do it properly... |
|---|
| 1059 | DO_2D( 0, 1, 0, 1 ) ! at T point |
|---|
| 1060 | zztmp1 = rhoa(ji,jj) * Cd_ice(ji,jj) * wndm_ice(ji,jj) |
|---|
| 1061 | putaui(ji,jj) = zztmp1 * pwndi(ji,jj) |
|---|
| 1062 | pvtaui(ji,jj) = zztmp1 * pwndj(ji,jj) |
|---|
| 1063 | END_2D |
|---|
| 1064 | |
|---|
| 1065 | !#LB: saving the module, and x-y components, of the ai wind-stress at T-points: NOT weighted by the ice concentration !!! |
|---|
| 1066 | IF(iom_use('taum_ice')) CALL iom_put('taum_ice', SQRT( putaui*putaui + pvtaui*pvtaui )*ztmp ) |
|---|
| 1067 | !#LB: These 2 lines below mostly here for 'STATION_ASF' test-case, otherwize "utau_oi" (U-grid) and vtau_oi" (V-grid) does the job in: [ICE/icedyn_rhg_evp.F90]) |
|---|
| 1068 | IF(iom_use('utau_ice')) CALL iom_put("utau_ice", putaui*ztmp) ! utau at T-points! |
|---|
| 1069 | IF(iom_use('vtau_ice')) CALL iom_put("vtau_ice", pvtaui*ztmp) ! vtau at T-points! |
|---|
| 1070 | |
|---|
| 1071 | ! |
|---|
| 1072 | DO_2D( 0, 0, 0, 0 ) ! U & V-points (same as ocean). |
|---|
| 1073 | !#LB: QUESTION?? so SI3 expects wind stress vector to be provided at U & V points? Not at T-points ? |
|---|
| 1074 | ! take care of the land-sea mask to avoid "pollution" of coastal stress. p[uv]taui used in frazil and rheology |
|---|
| 1075 | zztmp1 = 0.5_wp * ( 2. - umask(ji,jj,1) ) * MAX( tmask(ji,jj,1),tmask(ji+1,jj ,1) ) |
|---|
| 1076 | zztmp2 = 0.5_wp * ( 2. - vmask(ji,jj,1) ) * MAX( tmask(ji,jj,1),tmask(ji ,jj+1,1) ) |
|---|
| 1077 | putaui(ji,jj) = zztmp1 * ( putaui(ji,jj) + putaui(ji+1,jj ) ) |
|---|
| 1078 | pvtaui(ji,jj) = zztmp2 * ( pvtaui(ji,jj) + pvtaui(ji ,jj+1) ) |
|---|
| 1079 | END_2D |
|---|
| 1080 | CALL lbc_lnk( 'sbcblk', putaui, 'U', -1._wp, pvtaui, 'V', -1._wp ) |
|---|
| 1081 | ! |
|---|
| 1082 | IF(sn_cfctl%l_prtctl) CALL prt_ctl( tab2d_1=putaui , clinfo1=' blk_ice: putaui : ' & |
|---|
| 1083 | & , tab2d_2=pvtaui , clinfo2=' pvtaui : ' ) |
|---|
| 1084 | ELSE ! ln_abl |
|---|
| 1085 | |
|---|
| 1086 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 1087 | pcd_dui(ji,jj) = wndm_ice(ji,jj) * Cd_ice(ji,jj) |
|---|
| 1088 | pseni (ji,jj) = wndm_ice(ji,jj) * Ch_ice(ji,jj) |
|---|
| 1089 | pevpi (ji,jj) = wndm_ice(ji,jj) * Ce_ice(ji,jj) |
|---|
| 1090 | END_2D |
|---|
| 1091 | pssqi(:,:) = q_sat( ptsui(:,:), pslp(:,:), l_ice=.TRUE. ) ; ! more accurate way to obtain ssq ! |
|---|
| 1092 | |
|---|
| 1093 | ENDIF ! ln_blk / ln_abl |
|---|
| 1094 | ! |
|---|
| 1095 | IF(sn_cfctl%l_prtctl) CALL prt_ctl(tab2d_1=wndm_ice , clinfo1=' blk_ice: wndm_ice : ') |
|---|
| 1096 | ! |
|---|
| 1097 | END SUBROUTINE blk_ice_1 |
|---|
| 1098 | |
|---|
| 1099 | |
|---|
| 1100 | SUBROUTINE blk_ice_2( ptsu, phs, phi, palb, ptair, pqair, pslp, pdqlw, pprec, psnow ) |
|---|
| 1101 | !!--------------------------------------------------------------------- |
|---|
| 1102 | !! *** ROUTINE blk_ice_2 *** |
|---|
| 1103 | !! |
|---|
| 1104 | !! ** Purpose : provide the heat and mass fluxes at air-ice interface |
|---|
| 1105 | !! |
|---|
| 1106 | !! ** Method : compute heat and freshwater exchanged |
|---|
| 1107 | !! between atmosphere and sea-ice using bulk formulation |
|---|
| 1108 | !! formulea, ice variables and read atmmospheric fields. |
|---|
| 1109 | !! |
|---|
| 1110 | !! caution : the net upward water flux has with mm/day unit |
|---|
| 1111 | !!--------------------------------------------------------------------- |
|---|
| 1112 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: ptsu ! sea ice surface temperature [K] |
|---|
| 1113 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phs ! snow thickness |
|---|
| 1114 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: phi ! ice thickness |
|---|
| 1115 | REAL(wp), DIMENSION(:,:,:), INTENT(in) :: palb ! ice albedo (all skies) |
|---|
| 1116 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: ptair ! potential temperature of air #LB: okay ??? |
|---|
| 1117 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: pqair ! specific humidity of air |
|---|
| 1118 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: pslp |
|---|
| 1119 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: pdqlw |
|---|
| 1120 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: pprec |
|---|
| 1121 | REAL(wp), DIMENSION(:,: ), INTENT(in) :: psnow |
|---|
| 1122 | !! |
|---|
| 1123 | INTEGER :: ji, jj, jl ! dummy loop indices |
|---|
| 1124 | REAL(wp) :: zst, zst3, zsq, zsipt ! local variable |
|---|
| 1125 | REAL(wp) :: zcoef_dqlw, zcoef_dqla ! - - |
|---|
| 1126 | REAL(wp) :: zztmp, zzblk, zztmp1, z1_rLsub ! - - |
|---|
| 1127 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z_qlw ! long wave heat flux over ice |
|---|
| 1128 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z_qsb ! sensible heat flux over ice |
|---|
| 1129 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z_dqlw ! long wave heat sensitivity over ice |
|---|
| 1130 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: z_dqsb ! sensible heat sensitivity over ice |
|---|
| 1131 | REAL(wp), DIMENSION(jpi,jpj) :: zevap, zsnw ! evaporation and snw distribution after wind blowing (SI3) |
|---|
| 1132 | REAL(wp), DIMENSION(jpi,jpj) :: ztmp, ztmp2 |
|---|
| 1133 | REAL(wp), DIMENSION(jpi,jpj) :: ztri |
|---|
| 1134 | REAL(wp), DIMENSION(jpi,jpj) :: zcptrain, zcptsnw, zcptn ! Heat content per unit mass (J/kg) |
|---|
| 1135 | !!--------------------------------------------------------------------- |
|---|
| 1136 | ! |
|---|
| 1137 | zcoef_dqlw = 4._wp * emiss_i * stefan ! local scalars |
|---|
| 1138 | zztmp = 1. / ( 1. - albo ) |
|---|
| 1139 | dqla_ice(:,:,:) = 0._wp |
|---|
| 1140 | |
|---|
| 1141 | ! Heat content per unit mass (J/kg) |
|---|
| 1142 | zcptrain(:,:) = ( ptair - rt0 ) * rcp * tmask(:,:,1) |
|---|
| 1143 | zcptsnw (:,:) = ( MIN( ptair, rt0 ) - rt0 ) * rcpi * tmask(:,:,1) |
|---|
| 1144 | zcptn (:,:) = sst_m * rcp * tmask(:,:,1) |
|---|
| 1145 | ! |
|---|
| 1146 | ! ! ========================== ! |
|---|
| 1147 | DO jl = 1, jpl ! Loop over ice categories ! |
|---|
| 1148 | ! ! ========================== ! |
|---|
| 1149 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 1150 | |
|---|
| 1151 | zst = ptsu(ji,jj,jl) ! surface temperature of sea-ice [K] |
|---|
| 1152 | zsq = q_sat( zst, pslp(ji,jj), l_ice=.TRUE. ) ! surface saturation specific humidity when ice present |
|---|
| 1153 | zsipt = theta_exner( zst, pslp(ji,jj) ) ! potential sea-ice surface temperature [K] |
|---|
| 1154 | |
|---|
| 1155 | ! ----------------------------! |
|---|
| 1156 | ! I Radiative FLUXES ! |
|---|
| 1157 | ! ----------------------------! |
|---|
| 1158 | ! Short Wave (sw) |
|---|
| 1159 | qsr_ice(ji,jj,jl) = zztmp * ( 1. - palb(ji,jj,jl) ) * qsr(ji,jj) |
|---|
| 1160 | |
|---|
| 1161 | ! Long Wave (lw) |
|---|
| 1162 | zst3 = zst * zst * zst |
|---|
| 1163 | z_qlw(ji,jj,jl) = emiss_i * ( pdqlw(ji,jj) - stefan * zst * zst3 ) * tmask(ji,jj,1) |
|---|
| 1164 | ! lw sensitivity |
|---|
| 1165 | z_dqlw(ji,jj,jl) = zcoef_dqlw * zst3 |
|---|
| 1166 | |
|---|
| 1167 | ! ----------------------------! |
|---|
| 1168 | ! II Turbulent FLUXES ! |
|---|
| 1169 | ! ----------------------------! |
|---|
| 1170 | |
|---|
| 1171 | ! ... turbulent heat fluxes with Ch_ice recalculated in blk_ice_1 |
|---|
| 1172 | |
|---|
| 1173 | ! Common term in bulk F. equations... |
|---|
| 1174 | zzblk = rhoa(ji,jj) * wndm_ice(ji,jj) |
|---|
| 1175 | |
|---|
| 1176 | ! Sensible Heat |
|---|
| 1177 | zztmp1 = zzblk * rCp_air * Ch_ice(ji,jj) |
|---|
| 1178 | z_qsb (ji,jj,jl) = zztmp1 * (zsipt - theta_zu_i(ji,jj)) |
|---|
| 1179 | z_dqsb(ji,jj,jl) = zztmp1 ! ==> Qsens sensitivity (Dqsb_ice/Dtn_ice) |
|---|
| 1180 | |
|---|
| 1181 | ! Latent Heat |
|---|
| 1182 | zztmp1 = zzblk * rLsub * Ce_ice(ji,jj) |
|---|
| 1183 | qla_ice(ji,jj,jl) = MAX( zztmp1 * (zsq - q_zu_i(ji,jj)) , 0._wp ) ! #LB: only sublimation (and not condensation) ??? |
|---|
| 1184 | IF(qla_ice(ji,jj,jl)>0._wp) dqla_ice(ji,jj,jl) = zztmp1*dq_sat_dt_ice(zst, pslp(ji,jj)) ! ==> Qlat sensitivity (dQlat/dT) |
|---|
| 1185 | ! !#LB: dq_sat_dt_ice() in "sbc_phy.F90" |
|---|
| 1186 | !#LB: without this unjustified "condensation sensure": |
|---|
| 1187 | !qla_ice( ji,jj,jl) = zztmp1 * (zsq - q_zu_i(ji,jj)) |
|---|
| 1188 | !dqla_ice(ji,jj,jl) = zztmp1 * dq_sat_dt_ice(zst, pslp(ji,jj)) ! ==> Qlat sensitivity (dQlat/dT) |
|---|
| 1189 | |
|---|
| 1190 | |
|---|
| 1191 | ! ----------------------------! |
|---|
| 1192 | ! III Total FLUXES ! |
|---|
| 1193 | ! ----------------------------! |
|---|
| 1194 | ! Downward Non Solar flux |
|---|
| 1195 | qns_ice (ji,jj,jl) = z_qlw (ji,jj,jl) - z_qsb (ji,jj,jl) - qla_ice (ji,jj,jl) |
|---|
| 1196 | ! Total non solar heat flux sensitivity for ice |
|---|
| 1197 | dqns_ice(ji,jj,jl) = - ( z_dqlw(ji,jj,jl) + z_dqsb(ji,jj,jl) + dqla_ice(ji,jj,jl) ) !#LB: correct signs ???? |
|---|
| 1198 | |
|---|
| 1199 | END_2D |
|---|
| 1200 | ! |
|---|
| 1201 | END DO |
|---|
| 1202 | ! |
|---|
| 1203 | tprecip(:,:) = pprec(:,:) * rn_pfac * tmask(:,:,1) ! total precipitation [kg/m2/s] |
|---|
| 1204 | sprecip(:,:) = psnow(:,:) * rn_pfac * tmask(:,:,1) ! solid precipitation [kg/m2/s] |
|---|
| 1205 | CALL iom_put( 'snowpre', sprecip ) ! Snow precipitation |
|---|
| 1206 | CALL iom_put( 'precip' , tprecip ) ! Total precipitation |
|---|
| 1207 | |
|---|
| 1208 | ! --- evaporation --- ! |
|---|
| 1209 | z1_rLsub = 1._wp / rLsub |
|---|
| 1210 | evap_ice (:,:,:) = rn_efac * qla_ice (:,:,:) * z1_rLsub ! sublimation |
|---|
| 1211 | devap_ice(:,:,:) = rn_efac * dqla_ice(:,:,:) * z1_rLsub ! d(sublimation)/dT |
|---|
| 1212 | zevap (:,:) = emp(:,:) + tprecip(:,:) ! evaporation over ocean !LB: removed rn_efac here, correct??? |
|---|
| 1213 | |
|---|
| 1214 | ! --- evaporation minus precipitation --- ! |
|---|
| 1215 | zsnw(:,:) = 0._wp |
|---|
| 1216 | CALL ice_var_snwblow( (1.-at_i_b(:,:)), zsnw ) ! snow distribution over ice after wind blowing |
|---|
| 1217 | emp_oce(:,:) = ( 1._wp - at_i_b(:,:) ) * zevap(:,:) - ( tprecip(:,:) - sprecip(:,:) ) - sprecip(:,:) * (1._wp - zsnw ) |
|---|
| 1218 | emp_ice(:,:) = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw |
|---|
| 1219 | emp_tot(:,:) = emp_oce(:,:) + emp_ice(:,:) |
|---|
| 1220 | |
|---|
| 1221 | ! --- heat flux associated with emp --- ! |
|---|
| 1222 | qemp_oce(:,:) = - ( 1._wp - at_i_b(:,:) ) * zevap(:,:) * zcptn(:,:) & ! evap at sst |
|---|
| 1223 | & + ( tprecip(:,:) - sprecip(:,:) ) * zcptrain(:,:) & ! liquid precip at Tair |
|---|
| 1224 | & + sprecip(:,:) * ( 1._wp - zsnw ) * ( zcptsnw (:,:) - rLfus ) ! solid precip at min(Tair,Tsnow) |
|---|
| 1225 | qemp_ice(:,:) = sprecip(:,:) * zsnw * ( zcptsnw (:,:) - rLfus ) ! solid precip (only) |
|---|
| 1226 | |
|---|
| 1227 | ! --- total solar and non solar fluxes --- ! |
|---|
| 1228 | qns_tot(:,:) = ( 1._wp - at_i_b(:,:) ) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) & |
|---|
| 1229 | & + qemp_ice(:,:) + qemp_oce(:,:) |
|---|
| 1230 | qsr_tot(:,:) = ( 1._wp - at_i_b(:,:) ) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 ) |
|---|
| 1231 | |
|---|
| 1232 | ! --- heat content of precip over ice in J/m3 (to be used in 1D-thermo) --- ! |
|---|
| 1233 | qprec_ice(:,:) = rhos * ( zcptsnw(:,:) - rLfus ) |
|---|
| 1234 | |
|---|
| 1235 | ! --- heat content of evap over ice in W/m2 (to be used in 1D-thermo) --- |
|---|
| 1236 | DO jl = 1, jpl |
|---|
| 1237 | qevap_ice(:,:,jl) = 0._wp ! should be -evap_ice(:,:,jl)*( ( Tice - rt0 ) * rcpi * tmask(:,:,1) ) |
|---|
| 1238 | ! ! But we do not have Tice => consider it at 0degC => evap=0 |
|---|
| 1239 | END DO |
|---|
| 1240 | |
|---|
| 1241 | ! --- shortwave radiation transmitted thru the surface scattering layer (W/m2) --- ! |
|---|
| 1242 | IF( nn_qtrice == 0 ) THEN |
|---|
| 1243 | ! formulation derived from Grenfell and Maykut (1977), where transmission rate |
|---|
| 1244 | ! 1) depends on cloudiness |
|---|
| 1245 | ! 2) is 0 when there is any snow |
|---|
| 1246 | ! 3) tends to 1 for thin ice |
|---|
| 1247 | ztri(:,:) = 0.18 * ( 1.0 - cloud_fra(:,:) ) + 0.35 * cloud_fra(:,:) ! surface transmission when hi>10cm |
|---|
| 1248 | DO jl = 1, jpl |
|---|
| 1249 | WHERE ( phs(:,:,jl) <= 0._wp .AND. phi(:,:,jl) < 0.1_wp ) ! linear decrease from hi=0 to 10cm |
|---|
| 1250 | qtr_ice_top(:,:,jl) = qsr_ice(:,:,jl) * ( ztri(:,:) + ( 1._wp - ztri(:,:) ) * ( 1._wp - phi(:,:,jl) * 10._wp ) ) |
|---|
| 1251 | ELSEWHERE( phs(:,:,jl) <= 0._wp .AND. phi(:,:,jl) >= 0.1_wp ) ! constant (ztri) when hi>10cm |
|---|
| 1252 | qtr_ice_top(:,:,jl) = qsr_ice(:,:,jl) * ztri(:,:) |
|---|
| 1253 | ELSEWHERE ! zero when hs>0 |
|---|
| 1254 | qtr_ice_top(:,:,jl) = 0._wp |
|---|
| 1255 | END WHERE |
|---|
| 1256 | ENDDO |
|---|
| 1257 | ELSEIF( nn_qtrice == 1 ) THEN |
|---|
| 1258 | ! formulation is derived from the thesis of M. Lebrun (2019). |
|---|
| 1259 | ! It represents the best fit using several sets of observations |
|---|
| 1260 | ! It comes with snow conductivities adapted to freezing/melting conditions (see icethd_zdf_bl99.F90) |
|---|
| 1261 | qtr_ice_top(:,:,:) = 0.3_wp * qsr_ice(:,:,:) |
|---|
| 1262 | ENDIF |
|---|
| 1263 | ! |
|---|
| 1264 | IF( iom_use('evap_ao_cea') .OR. iom_use('hflx_evap_cea') ) THEN |
|---|
| 1265 | CALL iom_put( 'evap_ao_cea' , zevap(:,:) * ( 1._wp - at_i_b(:,:) ) * tmask(:,:,1) ) ! ice-free oce evap (cell average) |
|---|
| 1266 | CALL iom_put( 'hflx_evap_cea', zevap(:,:) * ( 1._wp - at_i_b(:,:) ) * tmask(:,:,1) * zcptn(:,:) ) ! heat flux from evap (cell average) |
|---|
| 1267 | ENDIF |
|---|
| 1268 | IF( iom_use('rain') .OR. iom_use('rain_ao_cea') .OR. iom_use('hflx_rain_cea') ) THEN |
|---|
| 1269 | CALL iom_put( 'rain' , tprecip(:,:) - sprecip(:,:) ) ! liquid precipitation |
|---|
| 1270 | CALL iom_put( 'rain_ao_cea' , ( tprecip(:,:) - sprecip(:,:) ) * ( 1._wp - at_i_b(:,:) ) ) ! liquid precipitation over ocean (cell average) |
|---|
| 1271 | CALL iom_put( 'hflx_rain_cea', ( tprecip(:,:) - sprecip(:,:) ) * zcptrain(:,:) ) ! heat flux from rain (cell average) |
|---|
| 1272 | ENDIF |
|---|
| 1273 | IF( iom_use('snow_ao_cea') .OR. iom_use('snow_ai_cea') .OR. & |
|---|
| 1274 | & iom_use('hflx_snow_cea') .OR. iom_use('hflx_snow_ao_cea') .OR. iom_use('hflx_snow_ai_cea') ) THEN |
|---|
| 1275 | CALL iom_put( 'snow_ao_cea' , sprecip(:,:) * ( 1._wp - zsnw(:,:) ) ) ! Snow over ice-free ocean (cell average) |
|---|
| 1276 | CALL iom_put( 'snow_ai_cea' , sprecip(:,:) * zsnw(:,:) ) ! Snow over sea-ice (cell average) |
|---|
| 1277 | CALL iom_put( 'hflx_snow_cea' , sprecip(:,:) * ( zcptsnw(:,:) - rLfus ) ) ! heat flux from snow (cell average) |
|---|
| 1278 | CALL iom_put( 'hflx_snow_ao_cea', sprecip(:,:) * ( zcptsnw(:,:) - rLfus ) * ( 1._wp - zsnw(:,:) ) ) ! heat flux from snow (over ocean) |
|---|
| 1279 | CALL iom_put( 'hflx_snow_ai_cea', sprecip(:,:) * ( zcptsnw(:,:) - rLfus ) * zsnw(:,:) ) ! heat flux from snow (over ice) |
|---|
| 1280 | ENDIF |
|---|
| 1281 | IF( iom_use('hflx_prec_cea') ) THEN ! heat flux from precip (cell average) |
|---|
| 1282 | CALL iom_put('hflx_prec_cea' , sprecip(:,:) * ( zcptsnw (:,:) - rLfus ) & |
|---|
| 1283 | & + ( tprecip(:,:) - sprecip(:,:) ) * zcptrain(:,:) ) |
|---|
| 1284 | ENDIF |
|---|
| 1285 | IF( iom_use('subl_ai_cea') .OR. iom_use('hflx_subl_cea') ) THEN |
|---|
| 1286 | CALL iom_put( 'subl_ai_cea' , SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) * tmask(:,:,1) ) ! Sublimation over sea-ice (cell average) |
|---|
| 1287 | CALL iom_put( 'hflx_subl_cea', SUM( a_i_b(:,:,:) * qevap_ice(:,:,:), dim=3 ) * tmask(:,:,1) ) ! Heat flux from sublimation (cell average) |
|---|
| 1288 | ENDIF |
|---|
| 1289 | ! |
|---|
| 1290 | IF(sn_cfctl%l_prtctl) THEN |
|---|
| 1291 | CALL prt_ctl(tab3d_1=qla_ice , clinfo1=' blk_ice: qla_ice : ', tab3d_2=z_qsb , clinfo2=' z_qsb : ', kdim=jpl) |
|---|
| 1292 | CALL prt_ctl(tab3d_1=z_qlw , clinfo1=' blk_ice: z_qlw : ', tab3d_2=dqla_ice, clinfo2=' dqla_ice : ', kdim=jpl) |
|---|
| 1293 | CALL prt_ctl(tab3d_1=z_dqsb , clinfo1=' blk_ice: z_dqsb : ', tab3d_2=z_dqlw , clinfo2=' z_dqlw : ', kdim=jpl) |
|---|
| 1294 | CALL prt_ctl(tab3d_1=dqns_ice, clinfo1=' blk_ice: dqns_ice : ', tab3d_2=qsr_ice , clinfo2=' qsr_ice : ', kdim=jpl) |
|---|
| 1295 | CALL prt_ctl(tab3d_1=ptsu , clinfo1=' blk_ice: ptsu : ', tab3d_2=qns_ice , clinfo2=' qns_ice : ', kdim=jpl) |
|---|
| 1296 | CALL prt_ctl(tab2d_1=tprecip , clinfo1=' blk_ice: tprecip : ', tab2d_2=sprecip , clinfo2=' sprecip : ') |
|---|
| 1297 | ENDIF |
|---|
| 1298 | |
|---|
| 1299 | !#LB: |
|---|
| 1300 | ! air-ice heat flux components that are not written from ice_stp()@icestp.F90: |
|---|
| 1301 | IF( iom_use('qla_ice') ) CALL iom_put( 'qla_ice', SUM( - qla_ice * a_i_b, dim=3 ) ) !#LB: sign consistent with what's done for ocean |
|---|
| 1302 | IF( iom_use('qsb_ice') ) CALL iom_put( 'qsb_ice', SUM( - z_qsb * a_i_b, dim=3 ) ) !#LB: ==> negative => loss of heat for sea-ice |
|---|
| 1303 | IF( iom_use('qlw_ice') ) CALL iom_put( 'qlw_ice', SUM( z_qlw * a_i_b, dim=3 ) ) |
|---|
| 1304 | !#LB. |
|---|
| 1305 | |
|---|
| 1306 | END SUBROUTINE blk_ice_2 |
|---|
| 1307 | |
|---|
| 1308 | |
|---|
| 1309 | SUBROUTINE blk_ice_qcn( ld_virtual_itd, ptsu, ptb, phs, phi ) |
|---|
| 1310 | !!--------------------------------------------------------------------- |
|---|
| 1311 | !! *** ROUTINE blk_ice_qcn *** |
|---|
| 1312 | !! |
|---|
| 1313 | !! ** Purpose : Compute surface temperature and snow/ice conduction flux |
|---|
| 1314 | !! to force sea ice / snow thermodynamics |
|---|
| 1315 | !! in the case conduction flux is emulated |
|---|
| 1316 | !! |
|---|
| 1317 | !! ** Method : compute surface energy balance assuming neglecting heat storage |
|---|
| 1318 | !! following the 0-layer Semtner (1976) approach |
|---|
| 1319 | !! |
|---|
| 1320 | !! ** Outputs : - ptsu : sea-ice / snow surface temperature (K) |
|---|
| 1321 | !! - qcn_ice : surface inner conduction flux (W/m2) |
|---|
| 1322 | !! |
|---|
| 1323 | !!--------------------------------------------------------------------- |
|---|
| 1324 | LOGICAL , INTENT(in ) :: ld_virtual_itd ! single-category option |
|---|
| 1325 | REAL(wp), DIMENSION(:,:,:), INTENT(inout) :: ptsu ! sea ice / snow surface temperature |
|---|
| 1326 | REAL(wp), DIMENSION(:,:) , INTENT(in ) :: ptb ! sea ice base temperature |
|---|
| 1327 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: phs ! snow thickness |
|---|
| 1328 | REAL(wp), DIMENSION(:,:,:), INTENT(in ) :: phi ! sea ice thickness |
|---|
| 1329 | ! |
|---|
| 1330 | INTEGER , PARAMETER :: nit = 10 ! number of iterations |
|---|
| 1331 | REAL(wp), PARAMETER :: zepsilon = 0.1_wp ! characteristic thickness for enhanced conduction |
|---|
| 1332 | ! |
|---|
| 1333 | INTEGER :: ji, jj, jl ! dummy loop indices |
|---|
| 1334 | INTEGER :: iter ! local integer |
|---|
| 1335 | REAL(wp) :: zfac, zfac2, zfac3 ! local scalars |
|---|
| 1336 | REAL(wp) :: zkeff_h, ztsu, ztsu0 ! |
|---|
| 1337 | REAL(wp) :: zqc, zqnet ! |
|---|
| 1338 | REAL(wp) :: zhe, zqa0 ! |
|---|
| 1339 | REAL(wp), DIMENSION(jpi,jpj,jpl) :: zgfac ! enhanced conduction factor |
|---|
| 1340 | !!--------------------------------------------------------------------- |
|---|
| 1341 | |
|---|
| 1342 | ! -------------------------------------! |
|---|
| 1343 | ! I Enhanced conduction factor ! |
|---|
| 1344 | ! -------------------------------------! |
|---|
| 1345 | ! Emulates the enhancement of conduction by unresolved thin ice (ld_virtual_itd = T) |
|---|
| 1346 | ! Fichefet and Morales Maqueda, JGR 1997 |
|---|
| 1347 | ! |
|---|
| 1348 | zgfac(:,:,:) = 1._wp |
|---|
| 1349 | |
|---|
| 1350 | IF( ld_virtual_itd ) THEN |
|---|
| 1351 | ! |
|---|
| 1352 | zfac = 1._wp / ( rn_cnd_s + rcnd_i ) |
|---|
| 1353 | zfac2 = EXP(1._wp) * 0.5_wp * zepsilon |
|---|
| 1354 | zfac3 = 2._wp / zepsilon |
|---|
| 1355 | ! |
|---|
| 1356 | DO jl = 1, jpl |
|---|
| 1357 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 1358 | zhe = ( rn_cnd_s * phi(ji,jj,jl) + rcnd_i * phs(ji,jj,jl) ) * zfac ! Effective thickness |
|---|
| 1359 | IF( zhe >= zfac2 ) zgfac(ji,jj,jl) = MIN( 2._wp, 0.5_wp * ( 1._wp + LOG( zhe * zfac3 ) ) ) ! Enhanced conduction factor |
|---|
| 1360 | END_2D |
|---|
| 1361 | END DO |
|---|
| 1362 | ! |
|---|
| 1363 | ENDIF |
|---|
| 1364 | |
|---|
| 1365 | ! -------------------------------------------------------------! |
|---|
| 1366 | ! II Surface temperature and conduction flux ! |
|---|
| 1367 | ! -------------------------------------------------------------! |
|---|
| 1368 | ! |
|---|
| 1369 | zfac = rcnd_i * rn_cnd_s |
|---|
| 1370 | ! |
|---|
| 1371 | DO jl = 1, jpl |
|---|
| 1372 | DO_2D( nn_hls, nn_hls, nn_hls, nn_hls ) |
|---|
| 1373 | ! |
|---|
| 1374 | zkeff_h = zfac * zgfac(ji,jj,jl) / & ! Effective conductivity of the snow-ice system divided by thickness |
|---|
| 1375 | & ( rcnd_i * phs(ji,jj,jl) + rn_cnd_s * MAX( 0.01, phi(ji,jj,jl) ) ) |
|---|
| 1376 | ztsu = ptsu(ji,jj,jl) ! Store current iteration temperature |
|---|
| 1377 | ztsu0 = ptsu(ji,jj,jl) ! Store initial surface temperature |
|---|
| 1378 | zqa0 = qsr_ice(ji,jj,jl) - qtr_ice_top(ji,jj,jl) + qns_ice(ji,jj,jl) ! Net initial atmospheric heat flux |
|---|
| 1379 | ! |
|---|
| 1380 | DO iter = 1, nit ! --- Iterative loop |
|---|
| 1381 | zqc = zkeff_h * ( ztsu - ptb(ji,jj) ) ! Conduction heat flux through snow-ice system (>0 downwards) |
|---|
| 1382 | zqnet = zqa0 + dqns_ice(ji,jj,jl) * ( ztsu - ptsu(ji,jj,jl) ) - zqc ! Surface energy budget |
|---|
| 1383 | ztsu = ztsu - zqnet / ( dqns_ice(ji,jj,jl) - zkeff_h ) ! Temperature update |
|---|
| 1384 | END DO |
|---|
| 1385 | ! |
|---|
| 1386 | ptsu (ji,jj,jl) = MIN( rt0, ztsu ) |
|---|
| 1387 | qcn_ice(ji,jj,jl) = zkeff_h * ( ptsu(ji,jj,jl) - ptb(ji,jj) ) |
|---|
| 1388 | qns_ice(ji,jj,jl) = qns_ice(ji,jj,jl) + dqns_ice(ji,jj,jl) * ( ptsu(ji,jj,jl) - ztsu0 ) |
|---|
| 1389 | qml_ice(ji,jj,jl) = ( qsr_ice(ji,jj,jl) - qtr_ice_top(ji,jj,jl) + qns_ice(ji,jj,jl) - qcn_ice(ji,jj,jl) ) & |
|---|
| 1390 | & * MAX( 0._wp , SIGN( 1._wp, ptsu(ji,jj,jl) - rt0 ) ) |
|---|
| 1391 | |
|---|
| 1392 | ! --- Diagnose the heat loss due to changing non-solar flux (as in icethd_zdf_bl99) --- ! |
|---|
| 1393 | hfx_err_dif(ji,jj) = hfx_err_dif(ji,jj) - ( dqns_ice(ji,jj,jl) * ( ptsu(ji,jj,jl) - ztsu0 ) ) * a_i_b(ji,jj,jl) |
|---|
| 1394 | |
|---|
| 1395 | END_2D |
|---|
| 1396 | ! |
|---|
| 1397 | END DO |
|---|
| 1398 | ! |
|---|
| 1399 | END SUBROUTINE blk_ice_qcn |
|---|
| 1400 | |
|---|
| 1401 | #endif |
|---|
| 1402 | |
|---|
| 1403 | !!====================================================================== |
|---|
| 1404 | END MODULE sbcblk |
|---|
