[3999] | 1 | MODULE LSCP_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | |
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| 7 | !++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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[4072] | 8 | SUBROUTINE LSCP(dtime,missing_val, & |
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[4059] | 9 | paprs,pplay,t,q,ptconv,ratqs, & |
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[4072] | 10 | d_t, d_q, d_ql, d_qi, rneb, rneb_seri, & |
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[4059] | 11 | radliq, radicefrac, rain, snow, & |
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[3999] | 12 | pfrac_impa, pfrac_nucl, pfrac_1nucl, & |
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| 13 | frac_impa, frac_nucl, beta, & |
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| 14 | prfl, psfl, rhcl, zqta, fraca, & |
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| 15 | ztv, zpspsk, ztla, zthl, iflag_cld_th, & |
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[4062] | 16 | iflag_ice_thermo, ok_ice_sursat) |
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[3999] | 17 | |
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| 18 | !++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 19 | ! Authors: Z.X. Li (LMD), J-L Dufresne (LMD), C. Rio (LMD), J-Y Grandpeix (LMD) |
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| 20 | ! A. JAM (LMD), J-B Madeleine (LMD), E. Vignon (LMD), L. Touzze-Peiffert (LMD) |
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| 21 | !-------------------------------------------------------------------------------- |
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| 22 | ! Date: 01/2021 |
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| 23 | !-------------------------------------------------------------------------------- |
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| 24 | ! Aim: Large Scale Clouds and Precipitation (LSCP) |
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| 25 | ! |
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| 26 | ! This code is a new version of the fisrtilp.F90 routine, which is itself a |
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[4072] | 27 | ! merge of 'first' (superrsaturation physics, P. LeVan K. Laval) |
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[3999] | 28 | ! and 'ilp' (il pleut, L. Li) |
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| 29 | ! |
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| 30 | ! Compared to fisrtilp, LSCP |
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| 31 | ! -> assumes thermcep = .TRUE. all the time (fisrtilp inconsistent when .FALSE.) |
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| 32 | ! -> consider always precipitation thermalisation (fl_cor_ebil>0) |
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| 33 | ! -> option iflag_fisrtilp_qsat<0 no longer possible (qsat does not evolve with T) |
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| 34 | ! -> option "oldbug" by JYG has been removed |
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| 35 | ! -> iflag_t_glace >0 always |
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| 36 | ! -> the 'all or nothing' cloud approach is no longer available (cpartiel=T always) |
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| 37 | ! -> rectangular distribution from L. Li no longer available |
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| 38 | ! -> We always account for the Wegener-Findeisen-Bergeron process (iflag_bergeron = 2 in fisrt) |
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| 39 | !-------------------------------------------------------------------------------- |
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| 40 | ! References: |
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| 41 | ! |
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| 42 | ! - Hourdin et al. 2013, Clim Dyn, doi:10.1007/s00382-012-1343-y |
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| 43 | ! - Jam et al. 2013, Boundary-Layer Meteorol, doi:10.1007/s10546-012-9789-3 |
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| 44 | ! - Madeleine et al. 2020, JAMES, doi:10.1029/2020MS002046 |
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| 45 | ! ------------------------------------------------------------------------------- |
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| 46 | ! Code structure: |
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| 47 | ! |
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| 48 | ! P0> Thermalization of the precipitation coming from the overlying layer |
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| 49 | ! P1> Evaporation of the precipitation (falling from the k+1 level) |
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| 50 | ! P2> Cloud formation (at the k level) |
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| 51 | ! P2.A.0> Cloud properties calculation from a rectangular pdf |
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| 52 | ! P2.A.1> With the new PDFs, calculation of cloud properties using the inital |
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| 53 | ! values of T and Q |
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| 54 | ! P2.A.2> Coupling between condensed water and temperature |
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| 55 | ! P2.A.3> Calculation of final quantities associated with cloud formation |
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| 56 | ! P2.B> 'All or nothing' cloud |
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| 57 | ! P2.C> Release of Latent heat after cloud formation |
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| 58 | ! P3> Autoconversion to precipitation (k-level) |
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| 59 | ! P4> Wet scavenging |
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| 60 | !------------------------------------------------------------------------------ |
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| 61 | ! Some preliminary comments (JBM) : |
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| 62 | ! |
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| 63 | ! The cloud water that the radiation scheme sees is not the same that the cloud |
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| 64 | ! water used in the physics and the dynamics |
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| 65 | ! |
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| 66 | ! During the autoconversion to precipitation (P3 step), radliq (cloud water used |
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| 67 | ! by the radiation scheme) is calculated as an average of the water that remains |
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| 68 | ! in the cloud during the precipitation and not the water remaining at the end |
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| 69 | ! of the time step. The latter is used in the rest of the physics and advected |
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| 70 | ! by the dynamics. |
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| 71 | ! |
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| 72 | ! In summary: |
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| 73 | ! |
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| 74 | ! Radiation: |
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| 75 | ! xflwc(newmicro)+xfiwc(newmicro) = |
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| 76 | ! cldliq(physiq)=radliq(fisrt)=lwcon(nc)+iwcon(nc) |
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| 77 | ! |
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| 78 | ! Physics/Dynamics: |
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| 79 | ! ql_seri(physiq)+qs_seri(physiq)=ocond(nc) |
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| 80 | ! |
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| 81 | ! Notetheless, be aware of: |
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| 82 | ! |
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| 83 | ! radliq(fisrt) .NE. ocond(nc) |
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| 84 | ! i.e.: |
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| 85 | ! lwcon(nc)+iwcon(nc) .NE. ocond(nc) |
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| 86 | ! (which is not trivial) |
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| 87 | !++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 88 | |
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| 89 | USE dimphy |
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| 90 | USE print_control_mod, ONLY: prt_level, lunout |
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| 91 | USE cloudth_mod |
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| 92 | USE ioipsl_getin_p_mod, ONLY : getin_p |
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| 93 | USE phys_local_var_mod, ONLY: ql_seri,qs_seri |
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| 94 | USE phys_local_var_mod, ONLY: rneblsvol |
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| 95 | USE lscp_tools_mod, ONLY : CALC_QSAT_ECMWF, ICEFRAC_LSCP, CALC_GAMMASAT, FALLICE_VELOCITY |
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[4059] | 96 | USE ice_sursat_mod |
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| 97 | !--ice supersaturation |
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| 98 | USE phys_local_var_mod, ONLY: zqsats, zqsatl |
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| 99 | USE phys_local_var_mod, ONLY: qclr, qcld, qss, qvc, rnebclr, rnebss, gamma_ss |
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| 100 | USE phys_local_var_mod, ONLY: Tcontr, qcontr, qcontr2, fcontrN, fcontrP |
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[3999] | 101 | |
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| 102 | IMPLICIT NONE |
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| 103 | |
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| 104 | !=============================================================================== |
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| 105 | ! VARIABLE DECLARATION |
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| 106 | !=============================================================================== |
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| 107 | |
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| 108 | include "YOMCST.h" |
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| 109 | include "YOETHF.h" |
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| 110 | include "FCTTRE.h" |
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| 111 | include "fisrtilp.h" |
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| 112 | include "nuage.h" |
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| 113 | |
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| 114 | |
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| 115 | ! INPUT VARIABLES: |
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| 116 | !----------------- |
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| 117 | |
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| 118 | REAL, INTENT(IN) :: dtime ! time step [s] |
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[4059] | 119 | REAL, INTENT(IN) :: missing_val ! missing value for output |
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| 120 | |
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[3999] | 121 | REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs ! inter-layer pressure [Pa] |
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| 122 | REAL, DIMENSION(klon,klev), INTENT(IN) :: pplay ! mid-layer pressure [Pa] |
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| 123 | REAL, DIMENSION(klon,klev), INTENT(IN) :: t ! temperature (K) |
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| 124 | REAL, DIMENSION(klon,klev), INTENT(IN) :: q ! specific humidity [kg/kg] |
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| 125 | INTEGER, INTENT(IN) :: iflag_cld_th ! flag that determines the distribution of convective clouds |
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| 126 | INTEGER, INTENT(IN) :: iflag_ice_thermo! flag to activate the ice thermodynamics |
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| 127 | ! CR: if iflag_ice_thermo=2, only convection is active |
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[4072] | 128 | LOGICAL, INTENT(IN) :: ok_ice_sursat ! flag to determine if ice sursaturation is activated |
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[4059] | 129 | |
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[3999] | 130 | LOGICAL, DIMENSION(klon,klev), INTENT(IN) :: ptconv ! grid points where deep convection scheme is active |
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| 131 | |
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| 132 | |
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| 133 | !Inputs associated with thermal plumes |
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| 134 | |
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| 135 | REAL, DIMENSION(klon,klev), INTENT(IN) :: ztv ! virtual potential temperature [K] |
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| 136 | REAL, DIMENSION(klon,klev), INTENT(IN) :: zqta ! specific humidity within thermals [kg/kg] |
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| 137 | REAL, DIMENSION(klon,klev), INTENT(IN) :: fraca ! fraction of thermals within the mesh [-] |
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| 138 | REAL, DIMENSION(klon,klev), INTENT(IN) :: zpspsk ! exner potential (p/100000)**(R/cp) |
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| 139 | REAL, DIMENSION(klon,klev), INTENT(IN) :: ztla ! liquid temperature within thermals [K] |
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[4072] | 140 | REAL, DIMENSION(klon,klev), INTENT(INOUT) :: zthl ! liquid potential temperature [K] |
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[3999] | 141 | |
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| 142 | ! INPUT/OUTPUT variables |
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| 143 | !------------------------ |
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| 144 | |
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| 145 | REAL, DIMENSION(klon,klev), INTENT(INOUT):: ratqs ! function of pressure that sets the large-scale |
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| 146 | ! cloud PDF (sigma=ratqs*qt) |
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[4072] | 147 | |
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[4059] | 148 | |
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| 149 | ! Input sursaturation en glace |
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| 150 | REAL, DIMENSION(klon,klev), INTENT(INOUT):: rneb_seri ! fraction nuageuse en memoire |
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[3999] | 151 | |
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| 152 | ! OUTPUT variables |
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| 153 | !----------------- |
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| 154 | |
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| 155 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_t ! temperature increment [K] |
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| 156 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_q ! specific humidity increment [kg/kg] |
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| 157 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_ql ! liquid water increment [kg/kg] |
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| 158 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_qi ! cloud ice mass increment [kg/kg] |
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| 159 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneb ! cloud fraction [-] |
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| 160 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: radliq ! condensed water used in the radiation scheme [kg/kg] |
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| 161 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: radicefrac ! ice fraction of condensed water for radiation scheme |
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| 162 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rhcl ! clear-sky relative humidity [-] |
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| 163 | REAL, DIMENSION(klon), INTENT(OUT) :: rain ! large-scale rainfall [kg/s/m2] |
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| 164 | REAL, DIMENSION(klon), INTENT(OUT) :: snow ! large-scale snowfall [kg/s/m2] |
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| 165 | REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: prfl ! large-scale rainfall flux in the column [kg/s/m2] |
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| 166 | REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: psfl ! large-scale snowfall flux in the column [kg/s/m2] |
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| 167 | |
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| 168 | |
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| 169 | ! cofficients of scavenging fraction (for off-line) |
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| 170 | |
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| 171 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfrac_nucl ! scavenging fraction due tu nucleation [-] |
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| 172 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfrac_1nucl ! scavenging fraction due tu nucleation with a -1 factor [-] |
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| 173 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: pfrac_impa ! scavening fraction due to impaction [-] |
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| 174 | |
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| 175 | ! fraction of aerosol scavenging through impaction and nucleation (for on-line) |
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| 176 | |
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| 177 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_impa ! scavenging fraction due tu impaction [-] |
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| 178 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_nucl ! scavenging fraction due tu nucleation [-] |
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| 179 | |
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| 180 | |
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| 181 | |
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| 182 | |
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| 183 | ! PROGRAM PARAMETERS: |
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| 184 | !-------------------- |
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| 185 | |
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| 186 | |
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| 187 | REAL, SAVE :: seuil_neb=0.001 ! cloud fraction threshold: a cloud really exists when exceeded |
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| 188 | !$OMP THREADPRIVATE(seuil_neb) |
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| 189 | |
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| 190 | INTEGER, SAVE :: ninter=5 ! number of iterations to calculate autoconversion to precipitation |
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| 191 | !$OMP THREADPRIVATE(ninter) |
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| 192 | |
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| 193 | INTEGER,SAVE :: iflag_evap_prec=1 ! precipitation evap. flag. 0: nothing, 1: "old way", 2: Max cloud fraction above to calculate the max of reevaporation |
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| 194 | ! 4: LTP'method i.e. evaporation in the clear-sky fraction of the mesh only |
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| 195 | !$OMP THREADPRIVATE(iflag_evap_prec) |
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| 196 | |
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| 197 | |
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| 198 | REAL t_coup ! temperature threshold which determines the phase |
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| 199 | PARAMETER (t_coup=234.0) ! for which the saturation vapor pressure is calculated |
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| 200 | |
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| 201 | REAL DDT0 ! iteration parameter |
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| 202 | PARAMETER (DDT0=.01) |
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| 203 | |
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| 204 | REAL ztfondue ! parameter to calculate melting fraction of precipitation |
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| 205 | PARAMETER (ztfondue=278.15) |
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| 206 | |
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[4072] | 207 | REAL, SAVE :: rain_int_min=0.001 ! Minimum local rain intensity [mm/s] before the decrease in associated precipitation fraction |
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[3999] | 208 | !$OMP THREADPRIVATE(rain_int_min) |
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| 209 | |
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| 210 | |
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[4072] | 211 | |
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[3999] | 212 | ! LOCAL VARIABLES: |
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| 213 | !---------------- |
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| 214 | |
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| 215 | |
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[4072] | 216 | REAL qsl(klon), qsi(klon) |
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[3999] | 217 | REAL zct, zcl |
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| 218 | REAL ctot(klon,klev) |
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| 219 | REAL ctot_vol(klon,klev) |
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| 220 | REAL zqs(klon), zdqs(klon), zdelta, zcor, zcvm5 |
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| 221 | REAL zdqsdT_raw(klon) |
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| 222 | REAL gammasat(klon),dgammasatdt(klon) ! coefficient to make cold condensation at the correct RH and derivative wrt T |
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| 223 | REAL Tbef(klon),qlbef(klon),DT(klon),num,denom |
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| 224 | REAL cste |
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| 225 | REAL zpdf_sig(klon),zpdf_k(klon),zpdf_delta(klon) |
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| 226 | REAL Zpdf_a(klon),zpdf_b(klon),zpdf_e1(klon),zpdf_e2(klon) |
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| 227 | REAL erf |
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| 228 | REAL qcloud(klon), icefrac_mpc(klon,klev), qincloud_mpc(klon) |
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| 229 | REAL zrfl(klon), zrfln(klon), zqev, zqevt |
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[4114] | 230 | REAL zifl(klon), zifln(klon), ziflprev(klon),zqev0,zqevi, zqevti |
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[3999] | 231 | REAL zoliq(klon), zcond(klon), zq(klon), zqn(klon) |
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[4072] | 232 | REAL zoliql(klon), zoliqi(klon) |
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[3999] | 233 | REAL zt(klon) |
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[4114] | 234 | REAL zdz(klon),zrho(klon,klev),iwc(klon) |
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[3999] | 235 | REAL zchau,zfroi,zfice(klon),zneb(klon),znebprecip(klon) |
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[4072] | 236 | REAL zmelt,zrain,zsnow,zprecip |
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[3999] | 237 | REAL dzfice(klon) |
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[4072] | 238 | REAL zsolid |
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| 239 | REAL qtot(klon), qzero(klon) |
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| 240 | REAL dqsl(klon),dqsi(klon) |
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[3999] | 241 | REAL smallestreal |
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| 242 | ! Variables for Bergeron process |
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| 243 | REAL zcp, coef1, DeltaT, Deltaq, Deltaqprecl |
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| 244 | REAL zqpreci(klon), zqprecl(klon) |
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| 245 | ! Variables precipitation energy conservation |
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| 246 | REAL zmqc(klon) |
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| 247 | ! Variables for tracers |
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| 248 | ! temporary: alpha parameter for scavenging |
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| 249 | ! 4 possible scavenging processes |
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| 250 | REAL a_tr_sca(4) |
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| 251 | save a_tr_sca |
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| 252 | !$OMP THREADPRIVATE(a_tr_sca) |
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| 253 | REAL zalpha_tr |
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| 254 | REAL zfrac_lessi |
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| 255 | REAL zprec_cond(klon) |
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| 256 | REAL beta(klon,klev) ! conversion rate of condensed water |
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| 257 | REAL zmair(klon), zcpair, zcpeau |
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| 258 | REAL zlh_solid(klon), zm_solid ! for liquid -> solid conversion |
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| 259 | REAL zrflclr(klon), zrflcld(klon) |
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| 260 | REAL d_zrfl_clr_cld(klon), d_zifl_clr_cld(klon) |
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| 261 | REAL d_zrfl_cld_clr(klon), d_zifl_cld_clr(klon) |
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| 262 | REAL ziflclr(klon), ziflcld(klon) |
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| 263 | REAL znebprecipclr(klon), znebprecipcld(klon) |
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| 264 | REAL tot_zneb(klon), tot_znebn(klon), d_tot_zneb(klon) |
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| 265 | REAL d_znebprecip_clr_cld(klon), d_znebprecip_cld_clr(klon) |
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[4072] | 266 | REAL velo(klon,klev), vr |
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[3999] | 267 | REAL qlmpc, qimpc, rnebmpc |
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[4072] | 268 | REAL radliqi(klon,klev), radliql(klon,klev) |
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[3999] | 269 | |
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| 270 | INTEGER i, k, n, kk |
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| 271 | INTEGER n_i(klon), iter |
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| 272 | INTEGER ncoreczq |
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[4072] | 273 | INTEGER mpc_bl_points(klon,klev) |
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[3999] | 274 | INTEGER,SAVE :: itap=0 |
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| 275 | !$OMP THREADPRIVATE(itap) |
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| 276 | |
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| 277 | LOGICAL lognormale(klon) |
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| 278 | LOGICAL convergence(klon) |
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| 279 | LOGICAL appel1er |
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| 280 | SAVE appel1er |
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| 281 | !$OMP THREADPRIVATE(appel1er) |
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| 282 | |
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| 283 | CHARACTER (len = 20) :: modname = 'lscp' |
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| 284 | CHARACTER (len = 80) :: abort_message |
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| 285 | |
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| 286 | DATA appel1er /.TRUE./ |
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| 287 | |
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| 288 | !=============================================================================== |
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| 289 | ! INITIALISATION |
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| 290 | !=============================================================================== |
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| 291 | |
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| 292 | ! Few initial checksS |
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| 293 | |
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| 294 | IF (iflag_t_glace.EQ.0) THEN |
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| 295 | abort_message = 'lscp cannot be used if iflag_t_glace=0' |
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| 296 | CALL abort_physic(modname,abort_message,1) |
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| 297 | ENDIF |
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| 298 | |
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| 299 | IF (.NOT.((iflag_ice_thermo .EQ. 1).OR.(iflag_ice_thermo .GE. 3))) THEN |
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| 300 | abort_message = 'lscp cannot be used without ice thermodynamics' |
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| 301 | CALL abort_physic(modname,abort_message,1) |
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| 302 | ENDIF |
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| 303 | |
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| 304 | IF (.NOT.thermcep) THEN |
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| 305 | abort_message = 'lscp cannot be used when thermcep=false' |
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| 306 | CALL abort_physic(modname,abort_message,1) |
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| 307 | ENDIF |
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| 308 | |
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| 309 | IF (iflag_fisrtilp_qsat .LT. 0) THEN |
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| 310 | abort_message = 'lscp cannot be used with iflag_fisrtilp<0' |
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| 311 | CALL abort_physic(modname,abort_message,1) |
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| 312 | ENDIF |
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| 313 | |
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| 314 | |
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| 315 | ! Few initialisations |
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| 316 | |
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| 317 | itap=itap+1 |
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| 318 | znebprecip(:)=0. |
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| 319 | ctot_vol(1:klon,1:klev)=0.0 |
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| 320 | rneblsvol(1:klon,1:klev)=0.0 |
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| 321 | smallestreal=1.e-9 |
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| 322 | znebprecipclr(:)=0. |
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| 323 | znebprecipcld(:)=0. |
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| 324 | mpc_bl_points(:,:)=0 |
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| 325 | |
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| 326 | IF (prt_level>9) WRITE(lunout,*) 'NUAGES4 A. JAM' |
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| 327 | |
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| 328 | IF (appel1er) THEN |
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| 329 | CALL getin_p('ninter',ninter) |
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| 330 | CALL getin_p('iflag_evap_prec',iflag_evap_prec) |
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| 331 | CALL getin_p('seuil_neb',seuil_neb) |
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| 332 | CALL getin_p('rain_int_min',rain_int_min) |
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| 333 | WRITE(lunout,*) 'lscp, ninter:', ninter |
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| 334 | WRITE(lunout,*) 'lscp, iflag_evap_prec:', iflag_evap_prec |
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| 335 | WRITE(lunout,*) 'lscp, seuil_neb:', seuil_neb |
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| 336 | WRITE(lunout,*) 'lscp, rain_int_min:', rain_int_min |
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| 337 | |
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| 338 | ! check for precipitation sub-time steps |
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| 339 | IF (ABS(dtime/REAL(ninter)-360.0).GT.0.001) THEN |
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| 340 | WRITE(lunout,*) 'lscp: it is not expected, see Z.X.Li', dtime |
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| 341 | WRITE(lunout,*) 'I would prefer a 6 min sub-timestep' |
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| 342 | ENDIF |
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| 343 | |
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| 344 | !AA Temporary initialisation |
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| 345 | a_tr_sca(1) = -0.5 |
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| 346 | a_tr_sca(2) = -0.5 |
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| 347 | a_tr_sca(3) = -0.5 |
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| 348 | a_tr_sca(4) = -0.5 |
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| 349 | |
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| 350 | !AA Set scavenged fractions to 1 |
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| 351 | DO k = 1, klev |
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| 352 | DO i = 1, klon |
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| 353 | pfrac_nucl(i,k)=1. |
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| 354 | pfrac_1nucl(i,k)=1. |
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| 355 | pfrac_impa(i,k)=1. |
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| 356 | beta(i,k)=0. |
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| 357 | ENDDO |
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| 358 | ENDDO |
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| 359 | |
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[4099] | 360 | IF (ok_ice_sursat) CALL ice_sursat_init() |
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| 361 | |
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[3999] | 362 | appel1er = .FALSE. |
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| 363 | |
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| 364 | ENDIF !(appel1er) |
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| 365 | |
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| 366 | ! AA for 'safety' reasons |
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| 367 | zalpha_tr = 0. |
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| 368 | zfrac_lessi = 0. |
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| 369 | |
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| 370 | ! Initialisation of output variables (JYG): |
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| 371 | prfl(:,:) = 0.0 |
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| 372 | psfl(:,:) = 0.0 |
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| 373 | |
---|
| 374 | d_t(:,:) = 0.0 |
---|
| 375 | d_q(:,:) = 0.0 |
---|
| 376 | d_ql(:,:) = 0.0 |
---|
| 377 | d_qi(:,:) = 0.0 |
---|
| 378 | rneb(:,:) = 0.0 |
---|
| 379 | radliq(:,:) = 0.0 |
---|
| 380 | radicefrac(:,:) = 0.0 |
---|
| 381 | frac_nucl(:,:) = 1. |
---|
| 382 | frac_impa(:,:) = 1. |
---|
| 383 | |
---|
| 384 | rain(:) = 0.0 |
---|
| 385 | snow(:) = 0.0 |
---|
[4114] | 386 | zoliq(:)=0.0 |
---|
| 387 | zfice(:)=0.0 |
---|
| 388 | dzfice(:)=0.0 |
---|
| 389 | zqprecl(:)=0.0 |
---|
| 390 | zqpreci(:)=0.0 |
---|
[3999] | 391 | zrfl(:) = 0.0 |
---|
| 392 | zifl(:) = 0.0 |
---|
[4114] | 393 | ziflprev(:)=0.0 |
---|
[3999] | 394 | zneb(:) = seuil_neb |
---|
| 395 | zrflclr(:) = 0.0 |
---|
| 396 | ziflclr(:) = 0.0 |
---|
| 397 | zrflcld(:) = 0.0 |
---|
| 398 | ziflcld(:) = 0.0 |
---|
| 399 | tot_zneb(:) = 0.0 |
---|
| 400 | tot_znebn(:) = 0.0 |
---|
| 401 | d_tot_zneb(:) = 0.0 |
---|
[4072] | 402 | qzero(:)=0.0 |
---|
[3999] | 403 | |
---|
[4059] | 404 | !--ice sursaturation |
---|
| 405 | gamma_ss(:,:) = 1. |
---|
| 406 | qss(:,:) = 0. |
---|
| 407 | rnebss(:,:) = 0. |
---|
| 408 | Tcontr(:,:) = missing_val |
---|
| 409 | qcontr(:,:) = missing_val |
---|
| 410 | qcontr2(:,:) = missing_val |
---|
| 411 | fcontrN(:,:) = 0.0 |
---|
| 412 | fcontrP(:,:) = 0.0 |
---|
[3999] | 413 | |
---|
| 414 | !=============================================================================== |
---|
| 415 | ! BEGINNING OF VERTICAL LOOP FROM TOP TO BOTTOM |
---|
| 416 | !=============================================================================== |
---|
| 417 | |
---|
| 418 | ncoreczq=0 |
---|
| 419 | |
---|
| 420 | DO k = klev, 1, -1 |
---|
| 421 | |
---|
| 422 | |
---|
| 423 | ! Initialisation temperature and specific humidity |
---|
| 424 | DO i = 1, klon |
---|
| 425 | zt(i)=t(i,k) |
---|
| 426 | zq(i)=q(i,k) |
---|
| 427 | ENDDO |
---|
| 428 | |
---|
| 429 | ! -------------------------------------------------------------------- |
---|
| 430 | ! P0> Thermalization of precipitation falling from the overlying layer |
---|
| 431 | ! -------------------------------------------------------------------- |
---|
| 432 | ! Computes air temperature variation due to latent heat transported by |
---|
| 433 | ! precipitation. Precipitation is then thermalized with the air in the |
---|
| 434 | ! layer. |
---|
| 435 | ! The precipitation should remain thermalized throughout the different |
---|
| 436 | ! thermodynamical transformations. The corresponding water mass should |
---|
| 437 | ! be added when calculating the layer's enthalpy change with |
---|
| 438 | ! temperature |
---|
| 439 | ! --------------------------------------------------------------------- |
---|
| 440 | |
---|
| 441 | IF (k.LE.klevm1) THEN |
---|
| 442 | |
---|
| 443 | DO i = 1, klon |
---|
| 444 | |
---|
| 445 | zmair(i)=(paprs(i,k)-paprs(i,k+1))/RG |
---|
| 446 | ! no condensed water so cp=cp(vapor+dry air) |
---|
| 447 | ! RVTMP2=rcpv/rcpd-1 |
---|
| 448 | zcpair=RCPD*(1.0+RVTMP2*zq(i)) |
---|
| 449 | zcpeau=RCPD*RVTMP2 |
---|
| 450 | |
---|
| 451 | ! zmqc: precipitation mass that has to be thermalized with |
---|
| 452 | ! layer's air so that precipitation at the ground has the |
---|
| 453 | ! same temperature as the lowermost layer |
---|
| 454 | zmqc(i) = (zrfl(i)+zifl(i))*dtime/zmair(i) |
---|
| 455 | ! t(i,k+1)+d_t(i,k+1): new temperature of the overlying layer |
---|
| 456 | zt(i) = ( (t(i,k+1)+d_t(i,k+1))*zmqc(i)*zcpeau + zcpair*zt(i) ) & |
---|
| 457 | / (zcpair + zmqc(i)*zcpeau) |
---|
| 458 | |
---|
| 459 | ENDDO |
---|
| 460 | |
---|
| 461 | ELSE |
---|
| 462 | |
---|
| 463 | DO i = 1, klon |
---|
| 464 | zmair(i)=(paprs(i,k)-paprs(i,k+1))/RG |
---|
| 465 | zmqc(i) = 0. |
---|
| 466 | ENDDO |
---|
| 467 | |
---|
| 468 | ENDIF |
---|
| 469 | |
---|
| 470 | ! -------------------------------------------------------------------- |
---|
| 471 | ! P1> Precipitation evaporation/sublimation |
---|
| 472 | ! -------------------------------------------------------------------- |
---|
| 473 | ! A part of the precipitation coming from above is evaporated/sublimated. |
---|
| 474 | ! -------------------------------------------------------------------- |
---|
| 475 | |
---|
| 476 | |
---|
| 477 | IF (iflag_evap_prec.GE.1) THEN |
---|
| 478 | |
---|
[4072] | 479 | ! Calculation of saturation specific humidity |
---|
| 480 | ! depending on temperature: |
---|
| 481 | CALL CALC_QSAT_ECMWF(klon,zt(:),qzero(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
---|
| 482 | ! wrt liquid water |
---|
| 483 | CALL CALC_QSAT_ECMWF(klon,zt(:),qzero(:),pplay(:,k),RTT,1,.false.,qsl(:),dqsl(:)) |
---|
| 484 | ! wrt ice |
---|
| 485 | CALL CALC_QSAT_ECMWF(klon,zt(:),qzero(:),pplay(:,k),RTT,2,.false.,qsi(:),dqsi(:)) |
---|
[3999] | 486 | |
---|
| 487 | DO i = 1, klon |
---|
| 488 | |
---|
| 489 | ! if precipitation |
---|
| 490 | IF (zrfl(i)+zifl(i).GT.0.) THEN |
---|
| 491 | |
---|
| 492 | ! LTP: we only account for precipitation evaporation in the clear-sky (iflag_evap_prec=4). |
---|
| 493 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 494 | zrfl(i) = zrflclr(i) |
---|
| 495 | zifl(i) = ziflclr(i) |
---|
| 496 | ENDIF |
---|
| 497 | |
---|
| 498 | IF (iflag_evap_prec.EQ.1) THEN |
---|
| 499 | znebprecip(i)=zneb(i) |
---|
| 500 | ELSE |
---|
| 501 | znebprecip(i)=MAX(zneb(i),znebprecip(i)) |
---|
| 502 | ENDIF |
---|
| 503 | |
---|
| 504 | |
---|
| 505 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 506 | ! Max evaporation not to saturate the whole mesh |
---|
| 507 | zqev0 = MAX(0.0, zqs(i)-zq(i)) |
---|
| 508 | ELSE |
---|
| 509 | ! Max evap not to saturate the fraction below the cloud |
---|
| 510 | zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecip(i)) |
---|
| 511 | ENDIF |
---|
| 512 | |
---|
| 513 | |
---|
| 514 | ! Evaporation of liquid precipitation coming from above |
---|
| 515 | ! dP/dz=beta*(1-q/qsat)*sqrt(P) |
---|
| 516 | ! formula from Sundquist 1988, Klemp & Wilhemson 1978 |
---|
| 517 | ! LTP: evaporation only in the clear sky part (iflag_evap_prec=4) |
---|
| 518 | |
---|
| 519 | IF (iflag_evap_prec.EQ.3) THEN |
---|
[4072] | 520 | zqevt = znebprecip(i)*coef_eva*(1.0-zq(i)/qsl(i)) & |
---|
[3999] | 521 | *SQRT(zrfl(i)/max(1.e-4,znebprecip(i))) & |
---|
| 522 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 523 | ELSE IF (iflag_evap_prec.EQ.4) THEN |
---|
[4072] | 524 | zqevt = znebprecipclr(i)*coef_eva*(1.0-zq(i)/qsl(i)) & |
---|
[3999] | 525 | *SQRT(zrfl(i)/max(1.e-8,znebprecipclr(i))) & |
---|
| 526 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 527 | ELSE |
---|
[4072] | 528 | zqevt = 1.*coef_eva*(1.0-zq(i)/qsl(i))*SQRT(zrfl(i)) & |
---|
[3999] | 529 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 530 | ENDIF |
---|
| 531 | |
---|
| 532 | |
---|
| 533 | zqevt = MAX(0.0,MIN(zqevt,zrfl(i))) & |
---|
| 534 | *RG*dtime/(paprs(i,k)-paprs(i,k+1)) |
---|
| 535 | |
---|
| 536 | ! sublimation of the solid precipitation coming from above |
---|
| 537 | IF (iflag_evap_prec.EQ.3) THEN |
---|
[4072] | 538 | zqevti = znebprecip(i)*coef_eva_i*(1.0-zq(i)/qsi(i)) & |
---|
[3999] | 539 | *SQRT(zifl(i)/max(1.e-4,znebprecip(i))) & |
---|
| 540 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 541 | ELSE IF (iflag_evap_prec.EQ.4) THEN |
---|
[4072] | 542 | zqevti = znebprecipclr(i)*coef_eva_i*(1.0-zq(i)/qsi(i)) & |
---|
[3999] | 543 | *SQRT(zifl(i)/max(1.e-8,znebprecipclr(i))) & |
---|
| 544 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 545 | ELSE |
---|
[4072] | 546 | zqevti = 1.*coef_eva_i*(1.0-zq(i)/qsi(i))*SQRT(zifl(i)) & |
---|
[3999] | 547 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
---|
| 548 | ENDIF |
---|
| 549 | |
---|
| 550 | zqevti = MAX(0.0,MIN(zqevti,zifl(i))) & |
---|
| 551 | *RG*dtime/(paprs(i,k)-paprs(i,k+1)) |
---|
| 552 | |
---|
| 553 | ! A. JAM |
---|
| 554 | ! Evaporation limit: we ensure that the layer's fraction below |
---|
| 555 | ! the cloud or the whole mesh (depending on iflag_evap_prec) |
---|
| 556 | ! does not reach saturation. In this case, we |
---|
| 557 | ! redistribute zqev0 conserving the ratio liquid/ice |
---|
| 558 | |
---|
| 559 | IF (zqevt+zqevti.GT.zqev0) THEN |
---|
| 560 | zqev=zqev0*zqevt/(zqevt+zqevti) |
---|
| 561 | zqevi=zqev0*zqevti/(zqevt+zqevti) |
---|
| 562 | ELSE |
---|
| 563 | zqev=zqevt |
---|
| 564 | zqevi=zqevti |
---|
| 565 | ENDIF |
---|
| 566 | |
---|
| 567 | |
---|
| 568 | ! New solid and liquid precipitation fluxes |
---|
| 569 | zrfln(i) = Max(0.,zrfl(i) - zqev*(paprs(i,k)-paprs(i,k+1)) & |
---|
| 570 | /RG/dtime) |
---|
| 571 | zifln(i) = Max(0.,zifl(i) - zqevi*(paprs(i,k)-paprs(i,k+1)) & |
---|
| 572 | /RG/dtime) |
---|
| 573 | |
---|
| 574 | ! vapor, temperature, precip fluxes update |
---|
| 575 | zq(i) = zq(i) - (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) & |
---|
| 576 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime |
---|
| 577 | ! precip thermalization |
---|
| 578 | zmqc(i) = zmqc(i) + (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) & |
---|
| 579 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime |
---|
| 580 | zt(i) = zt(i) + (zrfln(i)-zrfl(i)) & |
---|
| 581 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime & |
---|
| 582 | * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) & |
---|
| 583 | + (zifln(i)-zifl(i)) & |
---|
| 584 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime & |
---|
| 585 | * RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) |
---|
| 586 | |
---|
| 587 | ! New values of liquid and solid precipitation |
---|
| 588 | zrfl(i) = zrfln(i) |
---|
| 589 | zifl(i) = zifln(i) |
---|
| 590 | |
---|
| 591 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 592 | zrflclr(i) = zrfl(i) |
---|
| 593 | ziflclr(i) = zifl(i) |
---|
| 594 | IF(zrflclr(i) + ziflclr(i).LE.0) THEN |
---|
| 595 | znebprecipclr(i) = 0. |
---|
| 596 | ENDIF |
---|
| 597 | zrfl(i) = zrflclr(i) + zrflcld(i) |
---|
| 598 | zifl(i) = ziflclr(i) + ziflcld(i) |
---|
| 599 | ENDIF |
---|
| 600 | |
---|
| 601 | |
---|
| 602 | ! CR Be careful: ice melting has been moved |
---|
| 603 | zmelt = ((zt(i)-273.15)/(ztfondue-273.15)) ! JYG |
---|
| 604 | ! precip fraction that is melted |
---|
| 605 | zmelt = MIN(MAX(zmelt,0.),1.) |
---|
| 606 | ! Ice melting |
---|
| 607 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 608 | zrflclr(i)=zrflclr(i)+zmelt*ziflclr(i) |
---|
| 609 | zrflcld(i)=zrflcld(i)+zmelt*ziflcld(i) |
---|
| 610 | zrfl(i)=zrflclr(i)+zrflcld(i) |
---|
| 611 | ELSE |
---|
| 612 | zrfl(i)=zrfl(i)+zmelt*zifl(i) |
---|
| 613 | ENDIF |
---|
| 614 | |
---|
| 615 | ! Latent heat of melting with precipitation thermalization |
---|
| 616 | zt(i)=zt(i)-zifl(i)*zmelt*(RG*dtime)/(paprs(i,k)-paprs(i,k+1)) & |
---|
| 617 | *RLMLT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) |
---|
| 618 | |
---|
| 619 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 620 | ziflclr(i)=ziflclr(i)*(1.-zmelt) |
---|
| 621 | ziflcld(i)=ziflcld(i)*(1.-zmelt) |
---|
| 622 | zifl(i)=ziflclr(i)+ziflcld(i) |
---|
| 623 | ELSE |
---|
| 624 | zifl(i)=zifl(i)*(1.-zmelt) |
---|
| 625 | ENDIF |
---|
| 626 | |
---|
| 627 | ELSE |
---|
| 628 | ! if no precip, we reinitialize the cloud fraction used for the precip to 0 |
---|
| 629 | znebprecip(i)=0. |
---|
| 630 | |
---|
| 631 | ENDIF ! (zrfl(i)+zifl(i).GT.0.) |
---|
| 632 | |
---|
| 633 | ENDDO |
---|
| 634 | |
---|
| 635 | ENDIF ! (iflag_evap_prec>=1) |
---|
| 636 | |
---|
| 637 | ! -------------------------------------------------------------------- |
---|
| 638 | ! End precip evaporation |
---|
| 639 | ! -------------------------------------------------------------------- |
---|
| 640 | |
---|
| 641 | |
---|
| 642 | |
---|
| 643 | |
---|
| 644 | ! Calculation of qsat, L/Cp*dqsat/dT and ncoreczq counter |
---|
| 645 | !------------------------------------------------------- |
---|
[4072] | 646 | |
---|
| 647 | qtot(:)=zq(:)+zmqc(:) |
---|
| 648 | CALL CALC_QSAT_ECMWF(klon,zt(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
---|
| 649 | DO i = 1, klon |
---|
[3999] | 650 | zdelta = MAX(0.,SIGN(1.,RTT-zt(i))) |
---|
[4059] | 651 | zdqsdT_raw(i) = zdqs(i)*RCPD*(1.0+RVTMP2*zq(i)) / (RLVTT*(1.-zdelta) + RLSTT*zdelta) |
---|
[3999] | 652 | IF (zq(i) .LT. 1.e-15) THEN |
---|
| 653 | ncoreczq=ncoreczq+1 |
---|
| 654 | zq(i)=1.e-15 |
---|
| 655 | ENDIF |
---|
| 656 | |
---|
[4072] | 657 | ENDDO |
---|
[3999] | 658 | |
---|
| 659 | |
---|
| 660 | ! -------------------------------------------------------------------- |
---|
| 661 | ! P2> Cloud formation |
---|
| 662 | !--------------------------------------------------------------------- |
---|
| 663 | ! |
---|
| 664 | ! Unlike fisrtilp, we always assume a 'fractional cloud' approach |
---|
| 665 | ! i.e. clouds occupy only a fraction of the mesh (the subgrid distribution |
---|
| 666 | ! is prescribed and depends on large scale variables and boundary layer |
---|
| 667 | ! properties) |
---|
| 668 | ! The decrease in condensed part due tu latent heating is taken into |
---|
| 669 | ! account |
---|
| 670 | ! ------------------------------------------------------------------- |
---|
| 671 | |
---|
| 672 | |
---|
| 673 | ! P2.1> With the PDFs (log-normal, bigaussian) |
---|
| 674 | ! cloud propertues calculation with the initial values of t and q |
---|
| 675 | ! ---------------------------------------------------------------- |
---|
| 676 | |
---|
| 677 | ! initialise gammasat and qincloud_mpc |
---|
| 678 | gammasat(:)=1. |
---|
| 679 | qincloud_mpc(:)=0. |
---|
| 680 | |
---|
| 681 | IF (iflag_cld_th.GE.5) THEN |
---|
| 682 | |
---|
| 683 | IF (iflag_mpc_bl .LT. 1) THEN |
---|
| 684 | |
---|
| 685 | IF (iflag_cloudth_vert.LE.2) THEN |
---|
| 686 | |
---|
| 687 | CALL cloudth(klon,klev,k,ztv, & |
---|
| 688 | zq,zqta,fraca, & |
---|
| 689 | qcloud,ctot,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 690 | ratqs,zqs,t) |
---|
| 691 | |
---|
| 692 | ELSEIF (iflag_cloudth_vert.GE.3 .AND. iflag_cloudth_vert.LE.5) THEN |
---|
| 693 | |
---|
| 694 | CALL cloudth_v3(klon,klev,k,ztv, & |
---|
| 695 | zq,zqta,fraca, & |
---|
| 696 | qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 697 | ratqs,zqs,t) |
---|
| 698 | |
---|
| 699 | |
---|
| 700 | !Jean Jouhaud's version, Decembre 2018 |
---|
| 701 | !------------------------------------- |
---|
| 702 | |
---|
| 703 | ELSEIF (iflag_cloudth_vert.EQ.6) THEN |
---|
| 704 | |
---|
| 705 | CALL cloudth_v6(klon,klev,k,ztv, & |
---|
| 706 | zq,zqta,fraca, & |
---|
| 707 | qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 708 | ratqs,zqs,t) |
---|
| 709 | |
---|
| 710 | ENDIF |
---|
| 711 | |
---|
| 712 | ELSE |
---|
| 713 | ! cloudth_v3 + cold microphysical considerations |
---|
| 714 | ! + stationary mixed-phase cloud model |
---|
| 715 | |
---|
| 716 | CALL cloudth_mpc(klon,klev,k,mpc_bl_points, & |
---|
| 717 | t,ztv,zq,zqta,fraca, zpspsk, & |
---|
| 718 | paprs,pplay,ztla,zthl,ratqs,zqs,psfl, & |
---|
| 719 | qcloud,qincloud_mpc,icefrac_mpc,ctot,ctot_vol) |
---|
| 720 | |
---|
| 721 | ENDIF ! iflag_mpc_bl |
---|
| 722 | |
---|
| 723 | DO i=1,klon |
---|
| 724 | rneb(i,k)=ctot(i,k) |
---|
| 725 | rneblsvol(i,k)=ctot_vol(i,k) |
---|
| 726 | zqn(i)=qcloud(i) |
---|
| 727 | ENDDO |
---|
| 728 | |
---|
| 729 | ENDIF |
---|
| 730 | |
---|
| 731 | IF (iflag_cld_th .LE. 4) THEN |
---|
| 732 | |
---|
| 733 | ! lognormal |
---|
| 734 | lognormale = .TRUE. |
---|
| 735 | |
---|
| 736 | ELSEIF (iflag_cld_th .GE. 6) THEN |
---|
| 737 | |
---|
| 738 | ! lognormal distribution when no thermals |
---|
| 739 | lognormale = fraca(:,k) < 1e-10 |
---|
| 740 | |
---|
| 741 | ELSE |
---|
| 742 | ! When iflag_cld_th=5, we always assume |
---|
| 743 | ! bi-gaussian distribution |
---|
| 744 | lognormale = .FALSE. |
---|
| 745 | |
---|
| 746 | ENDIF |
---|
| 747 | |
---|
| 748 | |
---|
| 749 | DT(:) = 0. |
---|
| 750 | n_i(:)=0 |
---|
| 751 | Tbef(:)=zt(:) |
---|
| 752 | qlbef(:)=0. |
---|
| 753 | |
---|
| 754 | ! Treatment of non-boundary layer clouds (lognormale) |
---|
| 755 | ! condensation with qsat(T) variation (adaptation) |
---|
| 756 | ! Iterative Loop to converge towards qsat |
---|
| 757 | |
---|
| 758 | |
---|
| 759 | DO iter=1,iflag_fisrtilp_qsat+1 |
---|
| 760 | |
---|
| 761 | DO i=1,klon |
---|
| 762 | |
---|
[4072] | 763 | ! convergence = .true. until when convergence is not satisfied |
---|
[3999] | 764 | convergence(i)=ABS(DT(i)).GT.DDT0 |
---|
| 765 | |
---|
| 766 | IF ((convergence(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN |
---|
| 767 | |
---|
| 768 | ! if not convergence: |
---|
| 769 | |
---|
| 770 | ! P2.2.1> cloud fraction and condensed water mass calculation |
---|
| 771 | ! Calculated variables: |
---|
| 772 | ! rneb : cloud fraction |
---|
| 773 | ! zqn : total water within the cloud |
---|
| 774 | ! zcond: mean condensed water within the mesh |
---|
| 775 | ! rhcl: clear-sky relative humidity |
---|
| 776 | !--------------------------------------------------------------- |
---|
| 777 | |
---|
| 778 | ! new temperature: |
---|
| 779 | Tbef(i)=Tbef(i)+DT(i) |
---|
| 780 | |
---|
| 781 | ! Rneb, qzn and zcond for lognormal PDFs |
---|
[4072] | 782 | qtot(i)=zq(i)+zmqc(i) |
---|
| 783 | |
---|
| 784 | ENDIF |
---|
[3999] | 785 | |
---|
[4072] | 786 | ENDDO |
---|
| 787 | |
---|
| 788 | ! Calculation of saturation specific humidity and ce fraction |
---|
| 789 | CALL CALC_QSAT_ECMWF(klon,Tbef(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
---|
| 790 | CALL CALC_GAMMASAT(klon,Tbef(:),qtot(:),pplay(:,k),gammasat(:),dgammasatdt(:)) |
---|
| 791 | ! saturation may occur at a humidity different from qsat (gamma qsat), so gamma correction for dqs |
---|
| 792 | zdqs(:) = gammasat(:)*zdqs(:)+zqs(:)*dgammasatdt(:) |
---|
| 793 | CALL ICEFRAC_LSCP(klon, zt(:),pplay(:,k)/paprs(:,1),zfice(:),dzfice(:)) |
---|
| 794 | |
---|
| 795 | |
---|
| 796 | |
---|
| 797 | DO i=1,klon |
---|
| 798 | |
---|
| 799 | IF ((convergence(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN |
---|
| 800 | |
---|
[3999] | 801 | zpdf_sig(i)=ratqs(i,k)*zq(i) |
---|
| 802 | zpdf_k(i)=-sqrt(log(1.+(zpdf_sig(i)/zq(i))**2)) |
---|
| 803 | zpdf_delta(i)=log(zq(i)/(gammasat(i)*zqs(i))) |
---|
| 804 | zpdf_a(i)=zpdf_delta(i)/(zpdf_k(i)*sqrt(2.)) |
---|
| 805 | zpdf_b(i)=zpdf_k(i)/(2.*sqrt(2.)) |
---|
| 806 | zpdf_e1(i)=zpdf_a(i)-zpdf_b(i) |
---|
| 807 | zpdf_e1(i)=sign(min(ABS(zpdf_e1(i)),5.),zpdf_e1(i)) |
---|
| 808 | zpdf_e1(i)=1.-erf(zpdf_e1(i)) |
---|
| 809 | zpdf_e2(i)=zpdf_a(i)+zpdf_b(i) |
---|
| 810 | zpdf_e2(i)=sign(min(ABS(zpdf_e2(i)),5.),zpdf_e2(i)) |
---|
| 811 | zpdf_e2(i)=1.-erf(zpdf_e2(i)) |
---|
| 812 | |
---|
[4059] | 813 | !--ice sursaturation by Audran |
---|
[4062] | 814 | IF ((.NOT.ok_ice_sursat).OR.(Tbef(i).GT.t_glace_min)) THEN |
---|
[4059] | 815 | |
---|
| 816 | IF (zpdf_e1(i).LT.1.e-10) THEN |
---|
| 817 | rneb(i,k)=0. |
---|
| 818 | zqn(i)=gammasat(i)*zqs(i) |
---|
| 819 | ELSE |
---|
| 820 | rneb(i,k)=0.5*zpdf_e1(i) |
---|
| 821 | zqn(i)=zq(i)*zpdf_e2(i)/zpdf_e1(i) |
---|
| 822 | ENDIF |
---|
| 823 | |
---|
[4072] | 824 | rnebss(i,k)=0.0 !--added by OB (needed because of the convergence loop on time) |
---|
[4059] | 825 | fcontrN(i,k)=0.0 !--idem |
---|
| 826 | fcontrP(i,k)=0.0 !--idem |
---|
| 827 | qss(i,k)=0.0 !--idem |
---|
[4072] | 828 | |
---|
[3999] | 829 | ELSE |
---|
[4072] | 830 | |
---|
[4059] | 831 | !------------------------------------ |
---|
[4072] | 832 | ! ICE SUPERSATURATION |
---|
[4059] | 833 | !------------------------------------ |
---|
[3999] | 834 | |
---|
[4059] | 835 | CALL ice_sursat(pplay(i,k), paprs(i,k)-paprs(i,k+1), dtime, i, k, t(i,k), zq(i), & |
---|
[4072] | 836 | gamma_ss(i,k), zqs(i), Tbef(i), rneb_seri(i,k), ratqs(i,k), & |
---|
| 837 | rneb(i,k), zqn(i), rnebss(i,k), qss(i,k), & |
---|
[4059] | 838 | Tcontr(i,k), qcontr(i,k), qcontr2(i,k), fcontrN(i,k), fcontrP(i,k) ) |
---|
| 839 | |
---|
| 840 | ENDIF ! ((flag_ice_sursat.eq.0).or.(Tbef(i).gt.t_glace_min)) |
---|
| 841 | |
---|
[3999] | 842 | ! If vertical heterogeneity, change fraction by volume as well |
---|
| 843 | IF (iflag_cloudth_vert.GE.3) THEN |
---|
| 844 | ctot_vol(i,k)=rneb(i,k) |
---|
| 845 | rneblsvol(i,k)=ctot_vol(i,k) |
---|
| 846 | ENDIF |
---|
| 847 | |
---|
| 848 | |
---|
[4072] | 849 | ! P2.2.2> Approximative calculation of temperature variation DT |
---|
| 850 | ! due to condensation. |
---|
| 851 | ! Calculated variables: |
---|
| 852 | ! dT : temperature change due to condensation |
---|
| 853 | !--------------------------------------------------------------- |
---|
[3999] | 854 | |
---|
| 855 | |
---|
| 856 | IF (zfice(i).LT.1) THEN |
---|
| 857 | cste=RLVTT |
---|
| 858 | ELSE |
---|
| 859 | cste=RLSTT |
---|
| 860 | ENDIF |
---|
| 861 | |
---|
| 862 | qlbef(i)=max(0.,zqn(i)-zqs(i)) |
---|
| 863 | num = -Tbef(i)+zt(i)+rneb(i,k)*((1-zfice(i))*RLVTT & |
---|
| 864 | & +zfice(i)*RLSTT)/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))*qlbef(i) |
---|
| 865 | denom = 1.+rneb(i,k)*((1-zfice(i))*RLVTT+zfice(i)*RLSTT)/cste*zdqs(i) & |
---|
| 866 | -(RLSTT-RLVTT)/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))*rneb(i,k) & |
---|
| 867 | & *qlbef(i)*dzfice(i) |
---|
| 868 | DT(i)=num/denom |
---|
| 869 | n_i(i)=n_i(i)+1 |
---|
| 870 | |
---|
| 871 | ENDIF ! end convergence |
---|
| 872 | |
---|
| 873 | ENDDO ! end loop on i |
---|
| 874 | |
---|
| 875 | ENDDO ! iter=1,iflag_fisrtilp_qsat+1 |
---|
| 876 | |
---|
| 877 | |
---|
| 878 | |
---|
| 879 | ! P2.3> Final quantities calculation |
---|
| 880 | ! Calculated variables: |
---|
| 881 | ! rneb : cloud fraction |
---|
| 882 | ! zcond: mean condensed water in the mesh |
---|
| 883 | ! zqn : mean water vapor in the mesh |
---|
| 884 | ! zt : temperature |
---|
| 885 | ! rhcl : clear-sky relative humidity |
---|
| 886 | ! ---------------------------------------------------------------- |
---|
| 887 | |
---|
| 888 | |
---|
| 889 | |
---|
| 890 | ! Water vapor update, Phase determination and subsequent latent heat exchange |
---|
| 891 | |
---|
| 892 | ! Partition function in stratiform clouds (will be overwritten in boundary-layer MPCs) |
---|
[4072] | 893 | CALL ICEFRAC_LSCP(klon,zt(:),pplay(:,k)/paprs(:,1),zfice(:), dzfice(:)) |
---|
[3999] | 894 | |
---|
| 895 | DO i=1, klon |
---|
| 896 | |
---|
| 897 | |
---|
| 898 | IF (mpc_bl_points(i,k) .GT. 0) THEN |
---|
| 899 | zcond(i) = MAX(0.0,qincloud_mpc(i))*rneb(i,k) |
---|
| 900 | ! following line is very strange and probably wrong |
---|
| 901 | rhcl(i,k)= (zqs(i)+zq(i))/2./zqs(i) |
---|
| 902 | ! water vapor update and partition function if thermals |
---|
| 903 | zq(i) = zq(i) - zcond(i) |
---|
| 904 | zfice(i)=icefrac_mpc(i,k) |
---|
| 905 | |
---|
| 906 | ELSE |
---|
| 907 | |
---|
| 908 | ! Checks on rneb, rhcl and zqn |
---|
| 909 | IF (rneb(i,k) .LE. 0.0) THEN |
---|
| 910 | zqn(i) = 0.0 |
---|
| 911 | rneb(i,k) = 0.0 |
---|
| 912 | zcond(i) = 0.0 |
---|
| 913 | rhcl(i,k)=zq(i)/zqs(i) |
---|
| 914 | ELSE IF (rneb(i,k) .GE. 1.0) THEN |
---|
| 915 | zqn(i) = zq(i) |
---|
| 916 | rneb(i,k) = 1.0 |
---|
| 917 | zcond(i) = MAX(0.0,zqn(i)-gammasat(i)*zqs(i)) |
---|
| 918 | rhcl(i,k)=1.0 |
---|
| 919 | ELSE |
---|
| 920 | zcond(i) = MAX(0.0,zqn(i)-gammasat(i)*zqs(i))*rneb(i,k) |
---|
| 921 | ! following line is very strange and probably wrong: |
---|
| 922 | rhcl(i,k)=(zqs(i)+zq(i))/2./zqs(i) |
---|
| 923 | ENDIF |
---|
| 924 | |
---|
| 925 | |
---|
| 926 | ! water vapor update |
---|
| 927 | zq(i) = zq(i) - zcond(i) |
---|
| 928 | |
---|
| 929 | ENDIF |
---|
| 930 | |
---|
| 931 | ! temperature update due to phase change |
---|
| 932 | zt(i) = zt(i) + (1.-zfice(i))*zcond(i) & |
---|
| 933 | & * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) & |
---|
| 934 | +zfice(i)*zcond(i) * RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) |
---|
| 935 | ENDDO |
---|
| 936 | |
---|
| 937 | |
---|
| 938 | ! If vertical heterogeneity, change volume fraction |
---|
| 939 | IF (iflag_cloudth_vert .GE. 3) THEN |
---|
| 940 | ctot_vol(1:klon,k)=min(max(ctot_vol(1:klon,k),0.),1.) |
---|
| 941 | rneblsvol(1:klon,k)=ctot_vol(1:klon,k) |
---|
| 942 | ENDIF |
---|
| 943 | |
---|
| 944 | ! ---------------------------------------------------------------- |
---|
[4114] | 945 | ! P3> Precipitation formation |
---|
[3999] | 946 | ! ---------------------------------------------------------------- |
---|
| 947 | |
---|
| 948 | ! LTP: |
---|
| 949 | IF (iflag_evap_prec==4) THEN |
---|
| 950 | |
---|
| 951 | !Partitionning between precipitation coming from clouds and that coming from CS |
---|
| 952 | |
---|
| 953 | !0) Calculate tot_zneb, total cloud fraction above the cloud |
---|
| 954 | !assuming a maximum-random overlap (voir Jakob and Klein, 2000) |
---|
| 955 | |
---|
| 956 | DO i=1, klon |
---|
| 957 | tot_znebn(i) = 1 - (1-tot_zneb(i))*(1 - max(rneb(i,k),zneb(i))) & |
---|
| 958 | /(1-min(zneb(i),1-smallestreal)) |
---|
| 959 | d_tot_zneb(i) = tot_znebn(i) - tot_zneb(i) |
---|
| 960 | tot_zneb(i) = tot_znebn(i) |
---|
| 961 | |
---|
| 962 | |
---|
| 963 | !1) Cloudy to clear air |
---|
| 964 | d_znebprecip_cld_clr(i) = znebprecipcld(i) - min(rneb(i,k),znebprecipcld(i)) |
---|
| 965 | IF (znebprecipcld(i) .GT. 0) THEN |
---|
| 966 | d_zrfl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*zrflcld(i) |
---|
| 967 | d_zifl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*ziflcld(i) |
---|
| 968 | ELSE |
---|
| 969 | d_zrfl_cld_clr(i) = 0. |
---|
| 970 | d_zifl_cld_clr(i) = 0. |
---|
| 971 | ENDIF |
---|
| 972 | |
---|
| 973 | !2) Clear to cloudy air |
---|
| 974 | d_znebprecip_clr_cld(i) = max(0., min(znebprecipclr(i), rneb(i,k) & |
---|
| 975 | - d_tot_zneb(i) - zneb(i))) |
---|
| 976 | IF (znebprecipclr(i) .GT. 0) THEN |
---|
| 977 | d_zrfl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*zrflclr(i) |
---|
| 978 | d_zifl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*ziflclr(i) |
---|
| 979 | ELSE |
---|
| 980 | d_zrfl_clr_cld(i) = 0. |
---|
| 981 | d_zifl_clr_cld(i) = 0. |
---|
| 982 | ENDIF |
---|
| 983 | |
---|
| 984 | !Update variables |
---|
| 985 | znebprecipcld(i) = znebprecipcld(i) + d_znebprecip_clr_cld(i) - d_znebprecip_cld_clr(i) |
---|
| 986 | znebprecipclr(i) = znebprecipclr(i) + d_znebprecip_cld_clr(i) - d_znebprecip_clr_cld(i) |
---|
| 987 | zrflcld(i) = zrflcld(i) + d_zrfl_clr_cld(i) - d_zrfl_cld_clr(i) |
---|
| 988 | ziflcld(i) = ziflcld(i) + d_zifl_clr_cld(i) - d_zifl_cld_clr(i) |
---|
| 989 | zrflclr(i) = zrflclr(i) + d_zrfl_cld_clr(i) - d_zrfl_clr_cld(i) |
---|
| 990 | ziflclr(i) = ziflclr(i) + d_zifl_cld_clr(i) - d_zifl_clr_cld(i) |
---|
| 991 | |
---|
| 992 | ENDDO |
---|
| 993 | ENDIF |
---|
| 994 | |
---|
| 995 | ! Initialisation of zoliq and radliq variables |
---|
| 996 | |
---|
| 997 | DO i = 1, klon |
---|
| 998 | zoliq(i) = zcond(i) |
---|
[4072] | 999 | zoliqi(i)= zoliq(i)*zfice(i) |
---|
| 1000 | zoliql(i)= zoliq(i)*(1.-zfice(i)) |
---|
[4114] | 1001 | zrho(i,k) = pplay(i,k) / zt(i) / RD |
---|
| 1002 | zdz(i) = (paprs(i,k)-paprs(i,k+1)) / (zrho(i,k)*RG) |
---|
[4072] | 1003 | iwc(i) = 0. |
---|
| 1004 | zneb(i) = MAX(rneb(i,k),seuil_neb) |
---|
[3999] | 1005 | radliq(i,k) = zoliq(i)/REAL(ninter+1) |
---|
| 1006 | radicefrac(i,k) = zfice(i) |
---|
| 1007 | radliqi(i,k)=zoliq(i)*zfice(i)/REAL(ninter+1) |
---|
[4072] | 1008 | radliql(i,k)=zoliq(i)*(1.-zfice(i))/REAL(ninter+1) |
---|
[3999] | 1009 | ENDDO |
---|
| 1010 | |
---|
| 1011 | ! ------------------------------------------------------------------------------- |
---|
[4114] | 1012 | ! Autoconversion |
---|
[3999] | 1013 | ! ------------------------------------------------------------------------------- |
---|
| 1014 | |
---|
| 1015 | DO n = 1, ninter |
---|
| 1016 | |
---|
| 1017 | DO i=1,klon |
---|
| 1018 | IF (rneb(i,k).GT.0.0) THEN |
---|
[4114] | 1019 | iwc(i) = zrho(i,k) * zoliqi(i) / zneb(i) ! in-cloud ice condensate content |
---|
[3999] | 1020 | ENDIF |
---|
| 1021 | ENDDO |
---|
| 1022 | |
---|
[4114] | 1023 | CALL FALLICE_VELOCITY(klon,iwc(:),zt(:),zrho(:,k),pplay(:,k),ptconv(:,k),velo(:,k)) |
---|
[3999] | 1024 | |
---|
| 1025 | DO i = 1, klon |
---|
| 1026 | |
---|
| 1027 | IF (rneb(i,k).GT.0.0) THEN |
---|
| 1028 | |
---|
[4072] | 1029 | ! Initialization of zrain, zsnow and zprecip: |
---|
| 1030 | zrain=0. |
---|
| 1031 | zsnow=0. |
---|
| 1032 | zprecip=0. |
---|
[3999] | 1033 | |
---|
| 1034 | IF (zneb(i).EQ.seuil_neb) THEN |
---|
[4072] | 1035 | zprecip = 0.0 |
---|
| 1036 | zsnow = 0.0 |
---|
| 1037 | zrain= 0.0 |
---|
[3999] | 1038 | ELSE |
---|
| 1039 | ! water quantity to remove: zchau (Sundqvist, 1978) |
---|
| 1040 | ! same thing for the ice: zfroi (Zender & Kiehl, 1997) |
---|
| 1041 | IF (ptconv(i,k)) THEN ! if convective point |
---|
| 1042 | zcl=cld_lc_con |
---|
| 1043 | zct=1./cld_tau_con |
---|
[4072] | 1044 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliq(i)*velo(i,k)*zfice(i) |
---|
[3999] | 1045 | ELSE |
---|
| 1046 | zcl=cld_lc_lsc |
---|
| 1047 | zct=1./cld_tau_lsc |
---|
| 1048 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliq(i) & ! dqice/dt=1/rho*d(rho*wice*qice)/dz |
---|
[4072] | 1049 | *velo(i,k) * zfice(i) |
---|
[3999] | 1050 | ENDIF |
---|
| 1051 | |
---|
| 1052 | ! if vertical heterogeneity is taken into account, we use |
---|
| 1053 | ! the "true" volume fraction instead of a modified |
---|
| 1054 | ! surface fraction (which is larger and artificially |
---|
| 1055 | ! reduces the in-cloud water). |
---|
[4072] | 1056 | |
---|
[3999] | 1057 | IF ((iflag_cloudth_vert.GE.3).AND.(iflag_rain_incloud_vol.EQ.1)) THEN |
---|
| 1058 | zchau = zct *dtime/REAL(ninter) * zoliq(i) & |
---|
| 1059 | *(1.0-EXP(-(zoliq(i)/ctot_vol(i,k)/zcl)**2)) *(1.-zfice(i)) |
---|
| 1060 | ELSE |
---|
| 1061 | zchau = zct *dtime/REAL(ninter) * zoliq(i) & |
---|
| 1062 | *(1.0-EXP(-(zoliq(i)/zneb(i)/zcl)**2)) *(1.-zfice(i)) ! dqliq/dt=-qliq/tau*(1-exp(-qcin/clw)**2) |
---|
| 1063 | ENDIF |
---|
| 1064 | |
---|
[4072] | 1065 | zrain = MIN(MAX(zchau,0.0),zoliq(i)*(1.-zfice(i))) |
---|
| 1066 | zsnow = MIN(MAX(zfroi,0.0),zoliq(i)*zfice(i)) |
---|
| 1067 | zprecip = MAX(zrain + zsnow,0.0) |
---|
[3999] | 1068 | |
---|
| 1069 | ENDIF |
---|
| 1070 | |
---|
[4072] | 1071 | zoliql(i) = MAX(zoliq(i)*(1.-zfice(i))-1.*zrain , 0.0) |
---|
| 1072 | zoliqi(i) = MAX(zoliq(i)*zfice(i)-1.*zsnow , 0.0) |
---|
| 1073 | zoliq(i) = MAX(zoliq(i)-zprecip , 0.0) |
---|
[3999] | 1074 | |
---|
| 1075 | radliq(i,k) = radliq(i,k) + zoliq(i)/REAL(ninter+1) |
---|
[4072] | 1076 | radliql(i,k) = radliql(i,k) + zoliql(i)/REAL(ninter+1) |
---|
[3999] | 1077 | radliqi(i,k) = radliqi(i,k) + zoliqi(i)/REAL(ninter+1) |
---|
| 1078 | |
---|
[4072] | 1079 | ENDIF ! rneb >0 |
---|
[3999] | 1080 | |
---|
| 1081 | ENDDO ! i = 1,klon |
---|
| 1082 | |
---|
| 1083 | ENDDO ! n = 1,niter |
---|
| 1084 | |
---|
| 1085 | |
---|
[4072] | 1086 | |
---|
| 1087 | ! Precipitation flux calculation |
---|
[3999] | 1088 | |
---|
| 1089 | DO i = 1, klon |
---|
| 1090 | |
---|
[4114] | 1091 | |
---|
| 1092 | ziflprev(i)=zifl(i) |
---|
| 1093 | |
---|
[3999] | 1094 | IF (rneb(i,k) .GT. 0.0) THEN |
---|
[4072] | 1095 | |
---|
[3999] | 1096 | |
---|
[4072] | 1097 | ! CR&JYG: We account for the Wegener-Findeisen-Bergeron process in the precipitation flux: |
---|
| 1098 | ! If T<0C, liquid precip are converted into ice, which leads to an increase in |
---|
| 1099 | ! temperature DeltaT. The effect of DeltaT on condensates and precipitation is roughly |
---|
| 1100 | ! taken into account through a linearization of the equations and by approximating |
---|
| 1101 | ! the liquid precipitation process with a "threshold" process. We assume that |
---|
| 1102 | ! condensates are not modified during this operation. Liquid precipitation is |
---|
| 1103 | ! removed (in the limit DeltaT<273.15-T). Solid precipitation increases. |
---|
| 1104 | ! Water vapor increases as well |
---|
| 1105 | ! Note that compared to fisrtilp, we always assume iflag_bergeron=2 |
---|
| 1106 | |
---|
| 1107 | zqpreci(i)=(zcond(i)-zoliq(i))*zfice(i) |
---|
| 1108 | zqprecl(i)=(zcond(i)-zoliq(i))*(1.-zfice(i)) |
---|
| 1109 | zcp=RCPD*(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) |
---|
| 1110 | coef1 = rneb(i,k)*RLSTT/zcp*zdqsdT_raw(i) |
---|
| 1111 | ! Computation of DT if all the liquid precip freezes |
---|
| 1112 | DeltaT = RLMLT*zqprecl(i) / (zcp*(1.+coef1)) |
---|
| 1113 | ! T should not exceed the freezing point |
---|
| 1114 | ! that is Delta > RTT-zt(i) |
---|
| 1115 | DeltaT = max( min( RTT-zt(i), DeltaT) , 0. ) |
---|
| 1116 | zt(i) = zt(i) + DeltaT |
---|
| 1117 | ! water vaporization due to temp. increase |
---|
| 1118 | Deltaq = rneb(i,k)*zdqsdT_raw(i)*DeltaT |
---|
| 1119 | ! we add this vaporized water to the total vapor and we remove it from the precip |
---|
| 1120 | zq(i) = zq(i) + Deltaq |
---|
| 1121 | ! The three "max" lines herebelow protect from rounding errors |
---|
| 1122 | zcond(i) = max( zcond(i)- Deltaq, 0. ) |
---|
| 1123 | ! liquid precipitation converted to ice precip |
---|
| 1124 | Deltaqprecl = -zcp/RLMLT*(1.+coef1)*DeltaT |
---|
| 1125 | zqprecl(i) = max( zqprecl(i) + Deltaqprecl, 0. ) |
---|
| 1126 | ! iced water budget |
---|
| 1127 | zqpreci(i) = max (zqpreci(i) - Deltaqprecl - Deltaq, 0.) |
---|
[3999] | 1128 | |
---|
| 1129 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 1130 | zrflcld(i) = zrflcld(i)+zqprecl(i) & |
---|
| 1131 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1132 | ziflcld(i) = ziflcld(i)+ zqpreci(i) & |
---|
| 1133 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1134 | znebprecipcld(i) = rneb(i,k) |
---|
| 1135 | zrfl(i) = zrflcld(i) + zrflclr(i) |
---|
| 1136 | zifl(i) = ziflcld(i) + ziflclr(i) |
---|
| 1137 | ELSE |
---|
| 1138 | zrfl(i) = zrfl(i)+ zqprecl(i) & |
---|
| 1139 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1140 | zifl(i) = zifl(i)+ zqpreci(i) & |
---|
| 1141 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1142 | ENDIF |
---|
| 1143 | |
---|
| 1144 | ENDIF ! rneb>0 |
---|
| 1145 | |
---|
[4114] | 1146 | |
---|
[3999] | 1147 | ENDDO |
---|
| 1148 | |
---|
[4114] | 1149 | |
---|
| 1150 | |
---|
| 1151 | |
---|
[3999] | 1152 | ! LTP: limit of surface cloud fraction covered by precipitation when the local intensity of the flux is below rain_int_min |
---|
| 1153 | ! if iflag_evap_pre=4 |
---|
| 1154 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 1155 | |
---|
[4072] | 1156 | DO i=1,klon |
---|
[3999] | 1157 | |
---|
| 1158 | IF ((zrflclr(i) + ziflclr(i)) .GT. 0. ) THEN |
---|
| 1159 | znebprecipclr(i) = min(znebprecipclr(i),max(zrflclr(i)/ & |
---|
| 1160 | (MAX(znebprecipclr(i),seuil_neb)*rain_int_min), ziflclr(i)/(MAX(znebprecipclr(i),seuil_neb)*rain_int_min))) |
---|
| 1161 | ELSE |
---|
| 1162 | znebprecipclr(i)=0. |
---|
| 1163 | ENDIF |
---|
| 1164 | |
---|
| 1165 | IF ((zrflcld(i) + ziflcld(i)) .GT. 0.) THEN |
---|
| 1166 | znebprecipcld(i) = min(znebprecipcld(i), max(zrflcld(i)/ & |
---|
| 1167 | (MAX(znebprecipcld(i),seuil_neb)*rain_int_min), ziflcld(i)/(MAX(znebprecipcld(i),seuil_neb)*rain_int_min))) |
---|
| 1168 | ELSE |
---|
| 1169 | znebprecipcld(i)=0. |
---|
| 1170 | ENDIF |
---|
| 1171 | |
---|
| 1172 | ENDDO |
---|
| 1173 | |
---|
| 1174 | ENDIF |
---|
| 1175 | |
---|
| 1176 | ! End of precipitation formation |
---|
| 1177 | ! -------------------------------- |
---|
| 1178 | |
---|
| 1179 | ! Outputs: |
---|
| 1180 | ! Precipitation fluxes at layer interfaces |
---|
[4072] | 1181 | ! and temperature and water species tendencies |
---|
[3999] | 1182 | DO i = 1, klon |
---|
| 1183 | psfl(i,k)=zifl(i) |
---|
| 1184 | prfl(i,k)=zrfl(i) |
---|
[4072] | 1185 | d_ql(i,k) = (1-zfice(i))*zoliq(i) |
---|
| 1186 | d_qi(i,k) = zfice(i)*zoliq(i) |
---|
[3999] | 1187 | d_q(i,k) = zq(i) - q(i,k) |
---|
| 1188 | d_t(i,k) = zt(i) - t(i,k) |
---|
| 1189 | ENDDO |
---|
| 1190 | |
---|
[4114] | 1191 | ! Calculation of the concentration of condensates seen by the radiation scheme |
---|
| 1192 | ! for liquid phase, we take radliql |
---|
| 1193 | ! for ice phase, we take radliqi if we neglect snowfall, otherwise (ok_radliq_snow=true) |
---|
| 1194 | ! we recaulate radliqi to account for contributions from the precipitation flux |
---|
[3999] | 1195 | |
---|
[4114] | 1196 | |
---|
| 1197 | IF ((ok_radliq_snow) .AND. (k .LT. klev)) THEN |
---|
| 1198 | ! for the solid phase (crystals + snowflakes) |
---|
| 1199 | ! we recalculate radliqi by summing |
---|
| 1200 | ! the ice content calculated in the mesh |
---|
| 1201 | ! + the contribution of the non-evaporated snowfall |
---|
| 1202 | ! from the overlying layer |
---|
| 1203 | DO i=1,klon |
---|
| 1204 | IF (ziflprev(i) .NE. 0.0) THEN |
---|
| 1205 | radliqi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)+ziflprev(i)/zrho(i,k+1)/velo(i,k+1) |
---|
| 1206 | ELSE |
---|
| 1207 | radliqi(i,k)=zoliq(i)*zfice(i)+zqpreci(i) |
---|
| 1208 | ENDIF |
---|
| 1209 | radliq(i,k)=radliql(i,k)+radliqi(i,k) |
---|
| 1210 | ENDDO |
---|
| 1211 | ENDIF |
---|
| 1212 | |
---|
| 1213 | ! caculate the percentage of ice in "radliq" so cloud+precip seen by the radiation scheme |
---|
| 1214 | DO i=1,klon |
---|
| 1215 | IF (radliq(i,k) .GT. 0.) THEN |
---|
| 1216 | radicefrac(i,k)=MIN(MAX(radliqi(i,k)/radliq(i,k),0.),1.) |
---|
| 1217 | ENDIF |
---|
| 1218 | ENDDO |
---|
| 1219 | |
---|
| 1220 | |
---|
| 1221 | |
---|
[3999] | 1222 | ! ---------------------------------------------------------------- |
---|
| 1223 | ! P4> Wet scavenging |
---|
| 1224 | ! ---------------------------------------------------------------- |
---|
| 1225 | |
---|
| 1226 | |
---|
| 1227 | !Scavenging through nucleation in the layer |
---|
| 1228 | |
---|
| 1229 | DO i = 1,klon |
---|
| 1230 | |
---|
| 1231 | IF(zcond(i).GT.zoliq(i)+1.e-10) THEN |
---|
| 1232 | beta(i,k) = (zcond(i)-zoliq(i))/zcond(i)/dtime |
---|
| 1233 | ELSE |
---|
| 1234 | beta(i,k) = 0. |
---|
| 1235 | ENDIF |
---|
| 1236 | |
---|
[4059] | 1237 | zprec_cond(i) = MAX(zcond(i)-zoliq(i),0.0)*(paprs(i,k)-paprs(i,k+1))/RG |
---|
[3999] | 1238 | |
---|
| 1239 | IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN |
---|
| 1240 | |
---|
| 1241 | IF (t(i,k) .GE. t_glace_min) THEN |
---|
| 1242 | zalpha_tr = a_tr_sca(3) |
---|
| 1243 | ELSE |
---|
| 1244 | zalpha_tr = a_tr_sca(4) |
---|
| 1245 | ENDIF |
---|
| 1246 | |
---|
| 1247 | zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i)) |
---|
| 1248 | pfrac_nucl(i,k)=pfrac_nucl(i,k)*(1.-zneb(i)*zfrac_lessi) |
---|
| 1249 | frac_nucl(i,k)= 1.-zneb(i)*zfrac_lessi |
---|
| 1250 | |
---|
| 1251 | ! Nucleation with a factor of -1 instead of -0.5 |
---|
| 1252 | zfrac_lessi = 1. - EXP(-zprec_cond(i)/zneb(i)) |
---|
| 1253 | pfrac_1nucl(i,k)=pfrac_1nucl(i,k)*(1.-zneb(i)*zfrac_lessi) |
---|
| 1254 | |
---|
| 1255 | ENDIF |
---|
| 1256 | |
---|
| 1257 | ENDDO |
---|
| 1258 | |
---|
| 1259 | |
---|
| 1260 | ! Scavenging through impaction in the underlying layer |
---|
| 1261 | |
---|
| 1262 | DO kk = k-1, 1, -1 |
---|
| 1263 | |
---|
| 1264 | DO i = 1, klon |
---|
| 1265 | |
---|
| 1266 | IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN |
---|
| 1267 | |
---|
| 1268 | IF (t(i,kk) .GE. t_glace_min) THEN |
---|
| 1269 | zalpha_tr = a_tr_sca(1) |
---|
| 1270 | ELSE |
---|
| 1271 | zalpha_tr = a_tr_sca(2) |
---|
| 1272 | ENDIF |
---|
| 1273 | |
---|
| 1274 | zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i)) |
---|
| 1275 | pfrac_impa(i,kk)=pfrac_impa(i,kk)*(1.-zneb(i)*zfrac_lessi) |
---|
| 1276 | frac_impa(i,kk)= 1.-zneb(i)*zfrac_lessi |
---|
| 1277 | |
---|
| 1278 | ENDIF |
---|
| 1279 | |
---|
| 1280 | ENDDO |
---|
| 1281 | |
---|
| 1282 | ENDDO |
---|
| 1283 | |
---|
[4072] | 1284 | !--save some variables for ice supersaturation |
---|
[4059] | 1285 | ! |
---|
| 1286 | DO i = 1, klon |
---|
[4072] | 1287 | ! for memory |
---|
[4059] | 1288 | rneb_seri(i,k) = rneb(i,k) |
---|
[3999] | 1289 | |
---|
[4072] | 1290 | ! for diagnostics |
---|
[4059] | 1291 | rnebclr(i,k) = 1.0 - rneb(i,k) - rnebss(i,k) |
---|
[3999] | 1292 | |
---|
[4059] | 1293 | qvc(i,k) = zqs(i) * rneb(i,k) |
---|
[4072] | 1294 | qclr(i,k) = MAX(1.e-10,zq(i) - qvc(i,k) - qss(i,k)) !--added by OB because of pathologic cases with the lognormal |
---|
[4059] | 1295 | qcld(i,k) = qvc(i,k) + zcond(i) |
---|
[4072] | 1296 | END DO |
---|
| 1297 | !q_sat |
---|
| 1298 | CALL CALC_QSAT_ECMWF(klon,Tbef(:),qzero(:),pplay(:,k),RTT,1,.false.,zqsatl(:,k),zdqs(:)) |
---|
| 1299 | CALL CALC_QSAT_ECMWF(klon,Tbef(:),qzero(:),pplay(:,k),RTT,2,.false.,zqsats(:,k),zdqs(:)) |
---|
[4059] | 1300 | |
---|
[4072] | 1301 | END DO |
---|
[4059] | 1302 | |
---|
[3999] | 1303 | !====================================================================== |
---|
| 1304 | ! END OF VERTICAL LOOP |
---|
| 1305 | !====================================================================== |
---|
| 1306 | |
---|
| 1307 | ! Rain or snow at the surface (depending on the first layer temperature) |
---|
| 1308 | DO i = 1, klon |
---|
| 1309 | snow(i) = zifl(i) |
---|
| 1310 | rain(i) = zrfl(i) |
---|
| 1311 | ENDDO |
---|
| 1312 | |
---|
| 1313 | IF (ncoreczq>0) THEN |
---|
| 1314 | WRITE(lunout,*)'WARNING : ZQ in LSCP ',ncoreczq,' val < 1.e-15.' |
---|
| 1315 | ENDIF |
---|
| 1316 | |
---|
| 1317 | END SUBROUTINE LSCP |
---|
| 1318 | !+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
| 1319 | |
---|
| 1320 | END MODULE LSCP_MOD |
---|