[4380] | 1 | MODULE lscp_mod |
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[3999] | 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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[4380] | 8 | SUBROUTINE lscp(klon,klev,dtime,missing_val, & |
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[4059] | 9 | paprs,pplay,t,q,ptconv,ratqs, & |
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[4380] | 10 | d_t, d_q, d_ql, d_qi, rneb, rneblsvol, rneb_seri, & |
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[4412] | 11 | radocond, radicefrac, rain, snow, & |
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[3999] | 12 | frac_impa, frac_nucl, beta, & |
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| 13 | prfl, psfl, rhcl, zqta, fraca, & |
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| 14 | ztv, zpspsk, ztla, zthl, iflag_cld_th, & |
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[4380] | 15 | iflag_ice_thermo, ok_ice_sursat, qsatl, qsats, & |
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| 16 | qclr, qcld, qss, qvc, rnebclr, rnebss, gamma_ss, & |
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| 17 | Tcontr, qcontr, qcontr2, fcontrN, fcontrP) |
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[3999] | 18 | |
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| 19 | !++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 20 | ! Authors: Z.X. Li (LMD), J-L Dufresne (LMD), C. Rio (LMD), J-Y Grandpeix (LMD) |
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| 21 | ! A. JAM (LMD), J-B Madeleine (LMD), E. Vignon (LMD), L. Touzze-Peiffert (LMD) |
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| 22 | !-------------------------------------------------------------------------------- |
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| 23 | ! Date: 01/2021 |
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| 24 | !-------------------------------------------------------------------------------- |
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| 25 | ! Aim: Large Scale Clouds and Precipitation (LSCP) |
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[4226] | 26 | ! |
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[3999] | 27 | ! This code is a new version of the fisrtilp.F90 routine, which is itself a |
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[4072] | 28 | ! merge of 'first' (superrsaturation physics, P. LeVan K. Laval) |
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[3999] | 29 | ! and 'ilp' (il pleut, L. Li) |
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| 30 | ! |
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[4380] | 31 | ! Compared to the original fisrtilp code, lscp |
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[3999] | 32 | ! -> assumes thermcep = .TRUE. all the time (fisrtilp inconsistent when .FALSE.) |
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| 33 | ! -> consider always precipitation thermalisation (fl_cor_ebil>0) |
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| 34 | ! -> option iflag_fisrtilp_qsat<0 no longer possible (qsat does not evolve with T) |
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| 35 | ! -> option "oldbug" by JYG has been removed |
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| 36 | ! -> iflag_t_glace >0 always |
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| 37 | ! -> the 'all or nothing' cloud approach is no longer available (cpartiel=T always) |
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| 38 | ! -> rectangular distribution from L. Li no longer available |
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| 39 | ! -> We always account for the Wegener-Findeisen-Bergeron process (iflag_bergeron = 2 in fisrt) |
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| 40 | !-------------------------------------------------------------------------------- |
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| 41 | ! References: |
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| 42 | ! |
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[4412] | 43 | ! - Bony, S., & Emanuel, K. A. 2001, JAS, doi: 10.1175/1520-0469(2001)058<3158:APOTCA>2.0.CO;2 |
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[3999] | 44 | ! - Hourdin et al. 2013, Clim Dyn, doi:10.1007/s00382-012-1343-y |
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| 45 | ! - Jam et al. 2013, Boundary-Layer Meteorol, doi:10.1007/s10546-012-9789-3 |
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[4412] | 46 | ! - Jouhaud, et al. 2018. JAMES, doi:10.1029/2018MS001379 |
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[3999] | 47 | ! - Madeleine et al. 2020, JAMES, doi:10.1029/2020MS002046 |
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[4412] | 48 | ! - Touzze-Peifert Ludo, PhD thesis, p117-124 |
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[3999] | 49 | ! ------------------------------------------------------------------------------- |
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| 50 | ! Code structure: |
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| 51 | ! |
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[4226] | 52 | ! P0> Thermalization of the precipitation coming from the overlying layer |
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[3999] | 53 | ! P1> Evaporation of the precipitation (falling from the k+1 level) |
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| 54 | ! P2> Cloud formation (at the k level) |
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[4412] | 55 | ! P2.A.1> With the PDFs, calculation of cloud properties using the inital |
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[3999] | 56 | ! values of T and Q |
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| 57 | ! P2.A.2> Coupling between condensed water and temperature |
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| 58 | ! P2.A.3> Calculation of final quantities associated with cloud formation |
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[4412] | 59 | ! P2.B> Release of Latent heat after cloud formation |
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[3999] | 60 | ! P3> Autoconversion to precipitation (k-level) |
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| 61 | ! P4> Wet scavenging |
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| 62 | !------------------------------------------------------------------------------ |
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| 63 | ! Some preliminary comments (JBM) : |
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| 64 | ! |
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| 65 | ! The cloud water that the radiation scheme sees is not the same that the cloud |
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| 66 | ! water used in the physics and the dynamics |
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| 67 | ! |
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[4412] | 68 | ! During the autoconversion to precipitation (P3 step), radocond (cloud water used |
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[3999] | 69 | ! by the radiation scheme) is calculated as an average of the water that remains |
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| 70 | ! in the cloud during the precipitation and not the water remaining at the end |
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| 71 | ! of the time step. The latter is used in the rest of the physics and advected |
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| 72 | ! by the dynamics. |
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| 73 | ! |
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| 74 | ! In summary: |
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| 75 | ! |
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| 76 | ! Radiation: |
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| 77 | ! xflwc(newmicro)+xfiwc(newmicro) = |
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[4412] | 78 | ! radocond=lwcon(nc)+iwcon(nc) |
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[3999] | 79 | ! |
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| 80 | ! Notetheless, be aware of: |
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| 81 | ! |
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[4412] | 82 | ! radocond .NE. ocond(nc) |
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[3999] | 83 | ! i.e.: |
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| 84 | ! lwcon(nc)+iwcon(nc) .NE. ocond(nc) |
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[4412] | 85 | ! but oliq+(ocond-oliq) .EQ. ocond |
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[3999] | 86 | ! (which is not trivial) |
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| 87 | !++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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[4226] | 88 | ! |
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[3999] | 89 | USE print_control_mod, ONLY: prt_level, lunout |
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[4380] | 90 | USE cloudth_mod, ONLY : cloudth, cloudth_v3, cloudth_v6, cloudth_mpc |
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| 91 | USE lscp_tools_mod, ONLY : calc_qsat_ecmwf, icefrac_lscp, calc_gammasat, fallice_velocity |
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| 92 | USE ice_sursat_mod, ONLY : ice_sursat |
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[3999] | 93 | |
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[4380] | 94 | USE lscp_ini_mod, ONLY : seuil_neb, ninter, iflag_evap_prec, t_coup, DDT0, ztfondue, rain_int_min |
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[4420] | 95 | USE lscp_ini_mod, ONLY : iflag_mpc_bl, ok_radocond_snow, a_tr_sca, ok_debug_autoconversion |
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[4380] | 96 | |
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| 97 | |
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[3999] | 98 | IMPLICIT NONE |
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| 99 | |
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| 100 | !=============================================================================== |
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[4380] | 101 | ! VARIABLES DECLARATION |
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[3999] | 102 | !=============================================================================== |
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| 103 | |
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| 104 | include "YOMCST.h" |
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| 105 | include "YOETHF.h" |
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| 106 | include "fisrtilp.h" |
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| 107 | include "nuage.h" |
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| 108 | |
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| 109 | ! INPUT VARIABLES: |
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| 110 | !----------------- |
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| 111 | |
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[4380] | 112 | INTEGER, INTENT(IN) :: klon,klev ! number of horizontal grid points and vertical levels |
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[3999] | 113 | REAL, INTENT(IN) :: dtime ! time step [s] |
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[4380] | 114 | REAL, INTENT(IN) :: missing_val ! missing value for output |
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[4059] | 115 | |
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[3999] | 116 | REAL, DIMENSION(klon,klev+1), INTENT(IN) :: paprs ! inter-layer pressure [Pa] |
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| 117 | REAL, DIMENSION(klon,klev), INTENT(IN) :: pplay ! mid-layer pressure [Pa] |
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| 118 | REAL, DIMENSION(klon,klev), INTENT(IN) :: t ! temperature (K) |
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[4412] | 119 | REAL, DIMENSION(klon,klev), INTENT(IN) :: q ! total specific humidity (= vapor phase) [kg/kg] |
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[3999] | 120 | INTEGER, INTENT(IN) :: iflag_cld_th ! flag that determines the distribution of convective clouds |
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| 121 | INTEGER, INTENT(IN) :: iflag_ice_thermo! flag to activate the ice thermodynamics |
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[4226] | 122 | ! CR: if iflag_ice_thermo=2, only convection is active |
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[4072] | 123 | LOGICAL, INTENT(IN) :: ok_ice_sursat ! flag to determine if ice sursaturation is activated |
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[4059] | 124 | |
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[3999] | 125 | LOGICAL, DIMENSION(klon,klev), INTENT(IN) :: ptconv ! grid points where deep convection scheme is active |
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| 126 | |
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[4226] | 127 | |
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[3999] | 128 | !Inputs associated with thermal plumes |
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[4226] | 129 | |
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[3999] | 130 | REAL, DIMENSION(klon,klev), INTENT(IN) :: ztv ! virtual potential temperature [K] |
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| 131 | REAL, DIMENSION(klon,klev), INTENT(IN) :: zqta ! specific humidity within thermals [kg/kg] |
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| 132 | REAL, DIMENSION(klon,klev), INTENT(IN) :: fraca ! fraction of thermals within the mesh [-] |
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| 133 | REAL, DIMENSION(klon,klev), INTENT(IN) :: zpspsk ! exner potential (p/100000)**(R/cp) |
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| 134 | REAL, DIMENSION(klon,klev), INTENT(IN) :: ztla ! liquid temperature within thermals [K] |
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[4072] | 135 | REAL, DIMENSION(klon,klev), INTENT(INOUT) :: zthl ! liquid potential temperature [K] |
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[3999] | 136 | |
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| 137 | ! INPUT/OUTPUT variables |
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| 138 | !------------------------ |
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| 139 | |
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| 140 | REAL, DIMENSION(klon,klev), INTENT(INOUT):: ratqs ! function of pressure that sets the large-scale |
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[4380] | 141 | REAL, DIMENSION(klon,klev), INTENT(INOUT):: beta ! conversion rate of condensed water |
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[4059] | 142 | |
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[4380] | 143 | |
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[4059] | 144 | ! Input sursaturation en glace |
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| 145 | REAL, DIMENSION(klon,klev), INTENT(INOUT):: rneb_seri ! fraction nuageuse en memoire |
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[3999] | 146 | |
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| 147 | ! OUTPUT variables |
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| 148 | !----------------- |
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| 149 | |
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| 150 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_t ! temperature increment [K] |
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| 151 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_q ! specific humidity increment [kg/kg] |
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| 152 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_ql ! liquid water increment [kg/kg] |
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| 153 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: d_qi ! cloud ice mass increment [kg/kg] |
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| 154 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneb ! cloud fraction [-] |
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[4380] | 155 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rneblsvol ! cloud fraction per unit volume [-] |
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[4412] | 156 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: radocond ! condensed water used in the radiation scheme [kg/kg] |
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[3999] | 157 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: radicefrac ! ice fraction of condensed water for radiation scheme |
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| 158 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rhcl ! clear-sky relative humidity [-] |
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[4412] | 159 | REAL, DIMENSION(klon), INTENT(OUT) :: rain ! surface large-scale rainfall [kg/s/m2] |
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| 160 | REAL, DIMENSION(klon), INTENT(OUT) :: snow ! surface large-scale snowfall [kg/s/m2] |
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[4380] | 161 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsatl ! saturation specific humidity wrt liquid [kg/kg] |
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| 162 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qsats ! saturation specific humidity wrt ice [kg/kg] |
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[3999] | 163 | REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: prfl ! large-scale rainfall flux in the column [kg/s/m2] |
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| 164 | REAL, DIMENSION(klon,klev+1), INTENT(OUT) :: psfl ! large-scale snowfall flux in the column [kg/s/m2] |
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| 165 | |
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| 166 | ! fraction of aerosol scavenging through impaction and nucleation (for on-line) |
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| 167 | |
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| 168 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_impa ! scavenging fraction due tu impaction [-] |
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| 169 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: frac_nucl ! scavenging fraction due tu nucleation [-] |
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| 170 | |
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[4380] | 171 | ! for supersaturation and contrails parameterisation |
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[3999] | 172 | |
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[4380] | 173 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qclr ! specific total water content in clear sky region [kg/kg] |
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| 174 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcld ! specific total water content in cloudy region [kg/kg] |
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| 175 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qss ! specific total water content in supersat region [kg/kg] |
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| 176 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qvc ! specific vapor content in clouds [kg/kg] |
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| 177 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rnebclr ! mesh fraction of clear sky [-] |
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| 178 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: rnebss ! mesh fraction of ISSR [-] |
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| 179 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: gamma_ss ! coefficient governing the ice nucleation RHi threshold [-] |
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[4425] | 180 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: Tcontr ! threshold temperature for contrail formation [K] |
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| 181 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr ! threshold humidity for contrail formation [kg/kg] |
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| 182 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: qcontr2 ! // (2nd expression more consistent with LMDZ expression of q) |
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| 183 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrN ! fraction of grid favourable to non-persistent contrails |
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| 184 | REAL, DIMENSION(klon,klev), INTENT(OUT) :: fcontrP ! fraction of grid favourable to persistent contrails |
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[4380] | 185 | |
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[3999] | 186 | |
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| 187 | ! LOCAL VARIABLES: |
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| 188 | !---------------- |
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| 189 | |
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[4072] | 190 | REAL qsl(klon), qsi(klon) |
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[3999] | 191 | REAL zct, zcl |
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| 192 | REAL ctot(klon,klev) |
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| 193 | REAL ctot_vol(klon,klev) |
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[4226] | 194 | REAL zqs(klon), zdqs(klon), zdelta, zcor, zcvm5 |
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[3999] | 195 | REAL zdqsdT_raw(klon) |
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[4226] | 196 | REAL gammasat(klon),dgammasatdt(klon) ! coefficient to make cold condensation at the correct RH and derivative wrt T |
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[3999] | 197 | REAL Tbef(klon),qlbef(klon),DT(klon),num,denom |
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| 198 | REAL cste |
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| 199 | REAL zpdf_sig(klon),zpdf_k(klon),zpdf_delta(klon) |
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| 200 | REAL Zpdf_a(klon),zpdf_b(klon),zpdf_e1(klon),zpdf_e2(klon) |
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[4226] | 201 | REAL erf |
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[3999] | 202 | REAL qcloud(klon), icefrac_mpc(klon,klev), qincloud_mpc(klon) |
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| 203 | REAL zrfl(klon), zrfln(klon), zqev, zqevt |
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[4114] | 204 | REAL zifl(klon), zifln(klon), ziflprev(klon),zqev0,zqevi, zqevti |
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[3999] | 205 | REAL zoliq(klon), zcond(klon), zq(klon), zqn(klon) |
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[4072] | 206 | REAL zoliql(klon), zoliqi(klon) |
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[3999] | 207 | REAL zt(klon) |
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[4114] | 208 | REAL zdz(klon),zrho(klon,klev),iwc(klon) |
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[3999] | 209 | REAL zchau,zfroi,zfice(klon),zneb(klon),znebprecip(klon) |
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[4072] | 210 | REAL zmelt,zrain,zsnow,zprecip |
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[3999] | 211 | REAL dzfice(klon) |
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[4072] | 212 | REAL zsolid |
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| 213 | REAL qtot(klon), qzero(klon) |
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| 214 | REAL dqsl(klon),dqsi(klon) |
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[3999] | 215 | REAL smallestreal |
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| 216 | ! Variables for Bergeron process |
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| 217 | REAL zcp, coef1, DeltaT, Deltaq, Deltaqprecl |
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| 218 | REAL zqpreci(klon), zqprecl(klon) |
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| 219 | ! Variables precipitation energy conservation |
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| 220 | REAL zmqc(klon) |
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| 221 | REAL zalpha_tr |
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| 222 | REAL zfrac_lessi |
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| 223 | REAL zprec_cond(klon) |
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| 224 | REAL zmair(klon), zcpair, zcpeau |
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| 225 | REAL zlh_solid(klon), zm_solid ! for liquid -> solid conversion |
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[4226] | 226 | REAL zrflclr(klon), zrflcld(klon) |
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| 227 | REAL d_zrfl_clr_cld(klon), d_zifl_clr_cld(klon) |
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[3999] | 228 | REAL d_zrfl_cld_clr(klon), d_zifl_cld_clr(klon) |
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[4226] | 229 | REAL ziflclr(klon), ziflcld(klon) |
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| 230 | REAL znebprecipclr(klon), znebprecipcld(klon) |
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| 231 | REAL tot_zneb(klon), tot_znebn(klon), d_tot_zneb(klon) |
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[3999] | 232 | REAL d_znebprecip_clr_cld(klon), d_znebprecip_cld_clr(klon) |
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[4072] | 233 | REAL velo(klon,klev), vr |
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[3999] | 234 | REAL qlmpc, qimpc, rnebmpc |
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[4412] | 235 | REAL radocondi(klon,klev), radocondl(klon,klev) |
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[3999] | 236 | |
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| 237 | INTEGER i, k, n, kk |
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| 238 | INTEGER n_i(klon), iter |
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[4226] | 239 | INTEGER ncoreczq |
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[4072] | 240 | INTEGER mpc_bl_points(klon,klev) |
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[3999] | 241 | |
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| 242 | LOGICAL lognormale(klon) |
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[4424] | 243 | LOGICAL keepgoing(klon) |
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[4226] | 244 | LOGICAL,SAVE :: appel1er |
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[3999] | 245 | !$OMP THREADPRIVATE(appel1er) |
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| 246 | |
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| 247 | CHARACTER (len = 20) :: modname = 'lscp' |
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| 248 | CHARACTER (len = 80) :: abort_message |
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| 249 | |
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| 250 | DATA appel1er /.TRUE./ |
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| 251 | |
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| 252 | !=============================================================================== |
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| 253 | ! INITIALISATION |
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| 254 | !=============================================================================== |
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| 255 | |
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[4226] | 256 | ! Few initial checks |
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[3999] | 257 | |
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| 258 | IF (iflag_t_glace.EQ.0) THEN |
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| 259 | abort_message = 'lscp cannot be used if iflag_t_glace=0' |
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| 260 | CALL abort_physic(modname,abort_message,1) |
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| 261 | ENDIF |
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| 262 | |
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| 263 | IF (.NOT.((iflag_ice_thermo .EQ. 1).OR.(iflag_ice_thermo .GE. 3))) THEN |
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| 264 | abort_message = 'lscp cannot be used without ice thermodynamics' |
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| 265 | CALL abort_physic(modname,abort_message,1) |
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| 266 | ENDIF |
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| 267 | |
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| 268 | IF (iflag_fisrtilp_qsat .LT. 0) THEN |
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[4226] | 269 | abort_message = 'lscp cannot be used with iflag_fisrtilp<0' |
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| 270 | CALL abort_physic(modname,abort_message,1) |
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[3999] | 271 | ENDIF |
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| 272 | |
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| 273 | ! Few initialisations |
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| 274 | |
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[4226] | 275 | znebprecip(:)=0.0 |
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[3999] | 276 | ctot_vol(1:klon,1:klev)=0.0 |
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| 277 | rneblsvol(1:klon,1:klev)=0.0 |
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[4226] | 278 | smallestreal=1.e-9 |
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| 279 | znebprecipclr(:)=0.0 |
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| 280 | znebprecipcld(:)=0.0 |
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[3999] | 281 | mpc_bl_points(:,:)=0 |
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| 282 | |
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| 283 | IF (prt_level>9) WRITE(lunout,*) 'NUAGES4 A. JAM' |
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| 284 | |
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| 285 | ! AA for 'safety' reasons |
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| 286 | zalpha_tr = 0. |
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| 287 | zfrac_lessi = 0. |
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[4380] | 288 | beta(:,:)= 0. |
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[3999] | 289 | |
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[4380] | 290 | ! Initialisation of variables: |
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| 291 | |
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[3999] | 292 | prfl(:,:) = 0.0 |
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| 293 | psfl(:,:) = 0.0 |
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| 294 | d_t(:,:) = 0.0 |
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| 295 | d_q(:,:) = 0.0 |
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| 296 | d_ql(:,:) = 0.0 |
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| 297 | d_qi(:,:) = 0.0 |
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| 298 | rneb(:,:) = 0.0 |
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[4412] | 299 | radocond(:,:) = 0.0 |
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[3999] | 300 | radicefrac(:,:) = 0.0 |
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[4226] | 301 | frac_nucl(:,:) = 1.0 |
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| 302 | frac_impa(:,:) = 1.0 |
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[3999] | 303 | rain(:) = 0.0 |
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| 304 | snow(:) = 0.0 |
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[4114] | 305 | zoliq(:)=0.0 |
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| 306 | zfice(:)=0.0 |
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| 307 | dzfice(:)=0.0 |
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| 308 | zqprecl(:)=0.0 |
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| 309 | zqpreci(:)=0.0 |
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[3999] | 310 | zrfl(:) = 0.0 |
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| 311 | zifl(:) = 0.0 |
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[4114] | 312 | ziflprev(:)=0.0 |
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[3999] | 313 | zneb(:) = seuil_neb |
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[4226] | 314 | zrflclr(:) = 0.0 |
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| 315 | ziflclr(:) = 0.0 |
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| 316 | zrflcld(:) = 0.0 |
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| 317 | ziflcld(:) = 0.0 |
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| 318 | tot_zneb(:) = 0.0 |
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| 319 | tot_znebn(:) = 0.0 |
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| 320 | d_tot_zneb(:) = 0.0 |
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| 321 | qzero(:) = 0.0 |
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[3999] | 322 | |
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[4380] | 323 | !--ice supersaturation |
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[4226] | 324 | gamma_ss(:,:) = 1.0 |
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| 325 | qss(:,:) = 0.0 |
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| 326 | rnebss(:,:) = 0.0 |
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[4059] | 327 | Tcontr(:,:) = missing_val |
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| 328 | qcontr(:,:) = missing_val |
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| 329 | qcontr2(:,:) = missing_val |
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| 330 | fcontrN(:,:) = 0.0 |
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| 331 | fcontrP(:,:) = 0.0 |
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[3999] | 332 | |
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[4392] | 333 | !c_iso: variable initialisation for iso |
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| 334 | |
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| 335 | |
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[3999] | 336 | !=============================================================================== |
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| 337 | ! BEGINNING OF VERTICAL LOOP FROM TOP TO BOTTOM |
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| 338 | !=============================================================================== |
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| 339 | |
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| 340 | ncoreczq=0 |
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| 341 | |
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| 342 | DO k = klev, 1, -1 |
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| 343 | |
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| 344 | ! Initialisation temperature and specific humidity |
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| 345 | DO i = 1, klon |
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| 346 | zt(i)=t(i,k) |
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| 347 | zq(i)=q(i,k) |
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[4392] | 348 | !c_iso init of iso |
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[3999] | 349 | ENDDO |
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| 350 | |
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| 351 | ! -------------------------------------------------------------------- |
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| 352 | ! P0> Thermalization of precipitation falling from the overlying layer |
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| 353 | ! -------------------------------------------------------------------- |
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[4412] | 354 | ! Computes air temperature variation due to enthalpy transported by |
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[3999] | 355 | ! precipitation. Precipitation is then thermalized with the air in the |
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| 356 | ! layer. |
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| 357 | ! The precipitation should remain thermalized throughout the different |
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[4412] | 358 | ! thermodynamical transformations. |
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| 359 | ! The corresponding water mass should |
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[3999] | 360 | ! be added when calculating the layer's enthalpy change with |
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| 361 | ! temperature |
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[4412] | 362 | ! See lmdzpedia page todoan |
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| 363 | ! todoan: check consistency with ice phase |
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| 364 | ! todoan: understand why several steps |
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[3999] | 365 | ! --------------------------------------------------------------------- |
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| 366 | |
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[4380] | 367 | IF (k.LE.klev-1) THEN |
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[3999] | 368 | |
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| 369 | DO i = 1, klon |
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| 370 | |
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| 371 | zmair(i)=(paprs(i,k)-paprs(i,k+1))/RG |
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| 372 | ! no condensed water so cp=cp(vapor+dry air) |
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| 373 | ! RVTMP2=rcpv/rcpd-1 |
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| 374 | zcpair=RCPD*(1.0+RVTMP2*zq(i)) |
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[4226] | 375 | zcpeau=RCPD*RVTMP2 |
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| 376 | |
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[3999] | 377 | ! zmqc: precipitation mass that has to be thermalized with |
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| 378 | ! layer's air so that precipitation at the ground has the |
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| 379 | ! same temperature as the lowermost layer |
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| 380 | zmqc(i) = (zrfl(i)+zifl(i))*dtime/zmair(i) |
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| 381 | ! t(i,k+1)+d_t(i,k+1): new temperature of the overlying layer |
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| 382 | zt(i) = ( (t(i,k+1)+d_t(i,k+1))*zmqc(i)*zcpeau + zcpair*zt(i) ) & |
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| 383 | / (zcpair + zmqc(i)*zcpeau) |
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[4226] | 384 | |
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[3999] | 385 | ENDDO |
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| 386 | |
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[4226] | 387 | ELSE |
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[3999] | 388 | |
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| 389 | DO i = 1, klon |
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| 390 | zmair(i)=(paprs(i,k)-paprs(i,k+1))/RG |
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| 391 | zmqc(i) = 0. |
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| 392 | ENDDO |
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| 393 | |
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| 394 | ENDIF |
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| 395 | |
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| 396 | ! -------------------------------------------------------------------- |
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| 397 | ! P1> Precipitation evaporation/sublimation |
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| 398 | ! -------------------------------------------------------------------- |
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| 399 | ! A part of the precipitation coming from above is evaporated/sublimated. |
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| 400 | ! -------------------------------------------------------------------- |
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| 401 | |
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[4397] | 402 | IF (iflag_evap_prec.GE.1) THEN |
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[3999] | 403 | |
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[4072] | 404 | ! Calculation of saturation specific humidity |
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| 405 | ! depending on temperature: |
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[4380] | 406 | CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
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[4072] | 407 | ! wrt liquid water |
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[4380] | 408 | CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,1,.false.,qsl(:),dqsl(:)) |
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[4072] | 409 | ! wrt ice |
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[4380] | 410 | CALL calc_qsat_ecmwf(klon,zt(:),qzero(:),pplay(:,k),RTT,2,.false.,qsi(:),dqsi(:)) |
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[3999] | 411 | |
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| 412 | DO i = 1, klon |
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[4226] | 413 | |
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[3999] | 414 | ! if precipitation |
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| 415 | IF (zrfl(i)+zifl(i).GT.0.) THEN |
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[4226] | 416 | |
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[4412] | 417 | ! LudoTP: we only account for precipitation evaporation in the clear-sky (iflag_evap_prec=4). |
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[4392] | 418 | ! c_iso: likely important to distinguish cs from neb isotope precipitation |
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| 419 | |
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[4226] | 420 | IF (iflag_evap_prec.EQ.4) THEN |
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| 421 | zrfl(i) = zrflclr(i) |
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| 422 | zifl(i) = ziflclr(i) |
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| 423 | ENDIF |
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[3999] | 424 | |
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| 425 | IF (iflag_evap_prec.EQ.1) THEN |
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| 426 | znebprecip(i)=zneb(i) |
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| 427 | ELSE |
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| 428 | znebprecip(i)=MAX(zneb(i),znebprecip(i)) |
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| 429 | ENDIF |
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| 430 | |
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[4226] | 431 | IF (iflag_evap_prec.EQ.4) THEN |
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| 432 | ! Max evaporation not to saturate the whole mesh |
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| 433 | zqev0 = MAX(0.0, zqs(i)-zq(i)) |
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| 434 | ELSE |
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| 435 | ! Max evap not to saturate the fraction below the cloud |
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| 436 | zqev0 = MAX(0.0, (zqs(i)-zq(i))*znebprecip(i)) |
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| 437 | ENDIF |
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[3999] | 438 | |
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| 439 | ! Evaporation of liquid precipitation coming from above |
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| 440 | ! dP/dz=beta*(1-q/qsat)*sqrt(P) |
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| 441 | ! formula from Sundquist 1988, Klemp & Wilhemson 1978 |
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| 442 | ! LTP: evaporation only in the clear sky part (iflag_evap_prec=4) |
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| 443 | |
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| 444 | IF (iflag_evap_prec.EQ.3) THEN |
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[4072] | 445 | zqevt = znebprecip(i)*coef_eva*(1.0-zq(i)/qsl(i)) & |
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[3999] | 446 | *SQRT(zrfl(i)/max(1.e-4,znebprecip(i))) & |
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| 447 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 448 | ELSE IF (iflag_evap_prec.EQ.4) THEN |
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[4072] | 449 | zqevt = znebprecipclr(i)*coef_eva*(1.0-zq(i)/qsl(i)) & |
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[3999] | 450 | *SQRT(zrfl(i)/max(1.e-8,znebprecipclr(i))) & |
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| 451 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 452 | ELSE |
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[4072] | 453 | zqevt = 1.*coef_eva*(1.0-zq(i)/qsl(i))*SQRT(zrfl(i)) & |
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[3999] | 454 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 455 | ENDIF |
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| 456 | |
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[4226] | 457 | zqevt = MAX(0.0,MIN(zqevt,zrfl(i))) & |
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| 458 | *RG*dtime/(paprs(i,k)-paprs(i,k+1)) |
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[3999] | 459 | |
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| 460 | ! sublimation of the solid precipitation coming from above |
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| 461 | IF (iflag_evap_prec.EQ.3) THEN |
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[4072] | 462 | zqevti = znebprecip(i)*coef_eva_i*(1.0-zq(i)/qsi(i)) & |
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[3999] | 463 | *SQRT(zifl(i)/max(1.e-4,znebprecip(i))) & |
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| 464 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 465 | ELSE IF (iflag_evap_prec.EQ.4) THEN |
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[4072] | 466 | zqevti = znebprecipclr(i)*coef_eva_i*(1.0-zq(i)/qsi(i)) & |
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[3999] | 467 | *SQRT(zifl(i)/max(1.e-8,znebprecipclr(i))) & |
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| 468 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 469 | ELSE |
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[4072] | 470 | zqevti = 1.*coef_eva_i*(1.0-zq(i)/qsi(i))*SQRT(zifl(i)) & |
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[3999] | 471 | *(paprs(i,k)-paprs(i,k+1))/pplay(i,k)*zt(i)*RD/RG |
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| 472 | ENDIF |
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[4226] | 473 | |
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[3999] | 474 | zqevti = MAX(0.0,MIN(zqevti,zifl(i))) & |
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[4226] | 475 | *RG*dtime/(paprs(i,k)-paprs(i,k+1)) |
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[3999] | 476 | |
---|
| 477 | ! A. JAM |
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| 478 | ! Evaporation limit: we ensure that the layer's fraction below |
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| 479 | ! the cloud or the whole mesh (depending on iflag_evap_prec) |
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| 480 | ! does not reach saturation. In this case, we |
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| 481 | ! redistribute zqev0 conserving the ratio liquid/ice |
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[4226] | 482 | |
---|
[4412] | 483 | ! todoan: check the consistency of this formula |
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[3999] | 484 | IF (zqevt+zqevti.GT.zqev0) THEN |
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| 485 | zqev=zqev0*zqevt/(zqevt+zqevti) |
---|
| 486 | zqevi=zqev0*zqevti/(zqevt+zqevti) |
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| 487 | ELSE |
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| 488 | zqev=zqevt |
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| 489 | zqevi=zqevti |
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| 490 | ENDIF |
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| 491 | |
---|
| 492 | |
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[4392] | 493 | ! New solid and liquid precipitation fluxes after evap and sublimation |
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[3999] | 494 | zrfln(i) = Max(0.,zrfl(i) - zqev*(paprs(i,k)-paprs(i,k+1)) & |
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| 495 | /RG/dtime) |
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| 496 | zifln(i) = Max(0.,zifl(i) - zqevi*(paprs(i,k)-paprs(i,k+1)) & |
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| 497 | /RG/dtime) |
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| 498 | |
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[4392] | 499 | |
---|
[3999] | 500 | ! vapor, temperature, precip fluxes update |
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| 501 | zq(i) = zq(i) - (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) & |
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| 502 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime |
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| 503 | zmqc(i) = zmqc(i) + (zrfln(i)+zifln(i)-zrfl(i)-zifl(i)) & |
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| 504 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime |
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| 505 | zt(i) = zt(i) + (zrfln(i)-zrfl(i)) & |
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| 506 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime & |
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| 507 | * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) & |
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| 508 | + (zifln(i)-zifl(i)) & |
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| 509 | * (RG/(paprs(i,k)-paprs(i,k+1)))*dtime & |
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| 510 | * RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) |
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| 511 | |
---|
| 512 | ! New values of liquid and solid precipitation |
---|
| 513 | zrfl(i) = zrfln(i) |
---|
| 514 | zifl(i) = zifln(i) |
---|
| 515 | |
---|
[4392] | 516 | ! c_iso here call_reevap that updates isotopic zrfl, zifl (in inout) |
---|
| 517 | ! due to evap + sublim |
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| 518 | |
---|
| 519 | |
---|
[4226] | 520 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 521 | zrflclr(i) = zrfl(i) |
---|
| 522 | ziflclr(i) = zifl(i) |
---|
| 523 | IF(zrflclr(i) + ziflclr(i).LE.0) THEN |
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| 524 | znebprecipclr(i) = 0.0 |
---|
| 525 | ENDIF |
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| 526 | zrfl(i) = zrflclr(i) + zrflcld(i) |
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| 527 | zifl(i) = ziflclr(i) + ziflcld(i) |
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| 528 | ENDIF |
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[3999] | 529 | |
---|
[4392] | 530 | ! c_iso duplicate for isotopes or loop on isotopes |
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[3999] | 531 | |
---|
[4392] | 532 | ! Melting: |
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[4412] | 533 | zmelt = ((zt(i)-RTT)/(ztfondue-RTT)) ! JYG |
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[3999] | 534 | ! precip fraction that is melted |
---|
| 535 | zmelt = MIN(MAX(zmelt,0.),1.) |
---|
[4392] | 536 | |
---|
[4412] | 537 | ! update of rainfall and snowfall due to melting |
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[4226] | 538 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 539 | zrflclr(i)=zrflclr(i)+zmelt*ziflclr(i) |
---|
| 540 | zrflcld(i)=zrflcld(i)+zmelt*ziflcld(i) |
---|
| 541 | zrfl(i)=zrflclr(i)+zrflcld(i) |
---|
[4412] | 542 | |
---|
| 543 | ziflclr(i)=ziflclr(i)*(1.-zmelt) |
---|
| 544 | ziflcld(i)=ziflcld(i)*(1.-zmelt) |
---|
| 545 | zifl(i)=ziflclr(i)+ziflcld(i) |
---|
| 546 | |
---|
[4226] | 547 | ELSE |
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| 548 | zrfl(i)=zrfl(i)+zmelt*zifl(i) |
---|
[4412] | 549 | |
---|
| 550 | zifl(i)=zifl(i)*(1.-zmelt) |
---|
[4226] | 551 | ENDIF |
---|
[4412] | 552 | |
---|
| 553 | |
---|
[4392] | 554 | ! c_iso: melting of isotopic precipi with zmelt (no fractionation) |
---|
[3999] | 555 | |
---|
| 556 | ! Latent heat of melting with precipitation thermalization |
---|
| 557 | zt(i)=zt(i)-zifl(i)*zmelt*(RG*dtime)/(paprs(i,k)-paprs(i,k+1)) & |
---|
| 558 | *RLMLT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i))) |
---|
| 559 | |
---|
| 560 | |
---|
| 561 | ELSE |
---|
| 562 | ! if no precip, we reinitialize the cloud fraction used for the precip to 0 |
---|
| 563 | znebprecip(i)=0. |
---|
| 564 | |
---|
| 565 | ENDIF ! (zrfl(i)+zifl(i).GT.0.) |
---|
| 566 | |
---|
| 567 | ENDDO |
---|
[4226] | 568 | |
---|
[3999] | 569 | ENDIF ! (iflag_evap_prec>=1) |
---|
| 570 | |
---|
| 571 | ! -------------------------------------------------------------------- |
---|
| 572 | ! End precip evaporation |
---|
| 573 | ! -------------------------------------------------------------------- |
---|
| 574 | |
---|
| 575 | ! Calculation of qsat, L/Cp*dqsat/dT and ncoreczq counter |
---|
| 576 | !------------------------------------------------------- |
---|
[4226] | 577 | |
---|
[4072] | 578 | qtot(:)=zq(:)+zmqc(:) |
---|
[4380] | 579 | CALL calc_qsat_ecmwf(klon,zt(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
---|
[4072] | 580 | DO i = 1, klon |
---|
[3999] | 581 | zdelta = MAX(0.,SIGN(1.,RTT-zt(i))) |
---|
[4059] | 582 | zdqsdT_raw(i) = zdqs(i)*RCPD*(1.0+RVTMP2*zq(i)) / (RLVTT*(1.-zdelta) + RLSTT*zdelta) |
---|
[3999] | 583 | IF (zq(i) .LT. 1.e-15) THEN |
---|
| 584 | ncoreczq=ncoreczq+1 |
---|
| 585 | zq(i)=1.e-15 |
---|
| 586 | ENDIF |
---|
[4392] | 587 | ! c_iso: do something similar for isotopes |
---|
[3999] | 588 | |
---|
[4072] | 589 | ENDDO |
---|
[3999] | 590 | |
---|
| 591 | ! -------------------------------------------------------------------- |
---|
| 592 | ! P2> Cloud formation |
---|
| 593 | !--------------------------------------------------------------------- |
---|
| 594 | ! |
---|
| 595 | ! Unlike fisrtilp, we always assume a 'fractional cloud' approach |
---|
| 596 | ! i.e. clouds occupy only a fraction of the mesh (the subgrid distribution |
---|
| 597 | ! is prescribed and depends on large scale variables and boundary layer |
---|
| 598 | ! properties) |
---|
| 599 | ! The decrease in condensed part due tu latent heating is taken into |
---|
| 600 | ! account |
---|
| 601 | ! ------------------------------------------------------------------- |
---|
| 602 | |
---|
| 603 | ! P2.1> With the PDFs (log-normal, bigaussian) |
---|
[4424] | 604 | ! cloud properties calculation with the initial values of t and q |
---|
[3999] | 605 | ! ---------------------------------------------------------------- |
---|
| 606 | |
---|
| 607 | ! initialise gammasat and qincloud_mpc |
---|
| 608 | gammasat(:)=1. |
---|
| 609 | qincloud_mpc(:)=0. |
---|
| 610 | |
---|
| 611 | IF (iflag_cld_th.GE.5) THEN |
---|
| 612 | |
---|
| 613 | IF (iflag_mpc_bl .LT. 1) THEN |
---|
| 614 | |
---|
| 615 | IF (iflag_cloudth_vert.LE.2) THEN |
---|
| 616 | |
---|
| 617 | CALL cloudth(klon,klev,k,ztv, & |
---|
| 618 | zq,zqta,fraca, & |
---|
| 619 | qcloud,ctot,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 620 | ratqs,zqs,t) |
---|
| 621 | |
---|
| 622 | ELSEIF (iflag_cloudth_vert.GE.3 .AND. iflag_cloudth_vert.LE.5) THEN |
---|
| 623 | |
---|
| 624 | CALL cloudth_v3(klon,klev,k,ztv, & |
---|
| 625 | zq,zqta,fraca, & |
---|
| 626 | qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 627 | ratqs,zqs,t) |
---|
| 628 | |
---|
[4226] | 629 | !Jean Jouhaud's version, Decembre 2018 |
---|
| 630 | !------------------------------------- |
---|
[3999] | 631 | |
---|
| 632 | ELSEIF (iflag_cloudth_vert.EQ.6) THEN |
---|
| 633 | |
---|
| 634 | CALL cloudth_v6(klon,klev,k,ztv, & |
---|
| 635 | zq,zqta,fraca, & |
---|
| 636 | qcloud,ctot,ctot_vol,zpspsk,paprs,pplay,ztla,zthl, & |
---|
| 637 | ratqs,zqs,t) |
---|
| 638 | |
---|
| 639 | ENDIF |
---|
| 640 | |
---|
| 641 | ELSE |
---|
| 642 | ! cloudth_v3 + cold microphysical considerations |
---|
| 643 | ! + stationary mixed-phase cloud model |
---|
| 644 | |
---|
[4380] | 645 | CALL cloudth_mpc(klon,klev,k,iflag_mpc_bl,mpc_bl_points, & |
---|
[3999] | 646 | t,ztv,zq,zqta,fraca, zpspsk, & |
---|
| 647 | paprs,pplay,ztla,zthl,ratqs,zqs,psfl, & |
---|
| 648 | qcloud,qincloud_mpc,icefrac_mpc,ctot,ctot_vol) |
---|
| 649 | |
---|
| 650 | ENDIF ! iflag_mpc_bl |
---|
| 651 | |
---|
| 652 | DO i=1,klon |
---|
| 653 | rneb(i,k)=ctot(i,k) |
---|
| 654 | rneblsvol(i,k)=ctot_vol(i,k) |
---|
| 655 | zqn(i)=qcloud(i) |
---|
| 656 | ENDDO |
---|
| 657 | |
---|
| 658 | ENDIF |
---|
| 659 | |
---|
| 660 | IF (iflag_cld_th .LE. 4) THEN |
---|
| 661 | |
---|
| 662 | ! lognormal |
---|
| 663 | lognormale = .TRUE. |
---|
| 664 | |
---|
| 665 | ELSEIF (iflag_cld_th .GE. 6) THEN |
---|
| 666 | |
---|
| 667 | ! lognormal distribution when no thermals |
---|
| 668 | lognormale = fraca(:,k) < 1e-10 |
---|
| 669 | |
---|
| 670 | ELSE |
---|
[4226] | 671 | ! When iflag_cld_th=5, we always assume |
---|
[3999] | 672 | ! bi-gaussian distribution |
---|
| 673 | lognormale = .FALSE. |
---|
| 674 | |
---|
| 675 | ENDIF |
---|
| 676 | |
---|
| 677 | DT(:) = 0. |
---|
| 678 | n_i(:)=0 |
---|
| 679 | Tbef(:)=zt(:) |
---|
| 680 | qlbef(:)=0. |
---|
| 681 | |
---|
| 682 | ! Treatment of non-boundary layer clouds (lognormale) |
---|
| 683 | ! condensation with qsat(T) variation (adaptation) |
---|
[4424] | 684 | ! Iterative resolution to converge towards qsat |
---|
| 685 | ! with update of temperature, ice fraction and qsat at |
---|
| 686 | ! each iteration |
---|
[4226] | 687 | |
---|
[4424] | 688 | ! todoan -> sensitivity to iflag_fisrtilp_qsat |
---|
[3999] | 689 | DO iter=1,iflag_fisrtilp_qsat+1 |
---|
[4226] | 690 | |
---|
[3999] | 691 | DO i=1,klon |
---|
| 692 | |
---|
[4424] | 693 | ! keepgoing = .true. while convergence is not satisfied |
---|
| 694 | keepgoing(i)=ABS(DT(i)).GT.DDT0 |
---|
[4226] | 695 | |
---|
[4424] | 696 | IF ((keepgoing(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN |
---|
[4226] | 697 | |
---|
[3999] | 698 | ! if not convergence: |
---|
| 699 | |
---|
| 700 | ! P2.2.1> cloud fraction and condensed water mass calculation |
---|
| 701 | ! Calculated variables: |
---|
| 702 | ! rneb : cloud fraction |
---|
| 703 | ! zqn : total water within the cloud |
---|
| 704 | ! zcond: mean condensed water within the mesh |
---|
| 705 | ! rhcl: clear-sky relative humidity |
---|
| 706 | !--------------------------------------------------------------- |
---|
| 707 | |
---|
[4424] | 708 | ! new temperature that only serves in the iteration process: |
---|
[3999] | 709 | Tbef(i)=Tbef(i)+DT(i) |
---|
| 710 | |
---|
| 711 | ! Rneb, qzn and zcond for lognormal PDFs |
---|
[4072] | 712 | qtot(i)=zq(i)+zmqc(i) |
---|
[4226] | 713 | |
---|
[4072] | 714 | ENDIF |
---|
[3999] | 715 | |
---|
[4072] | 716 | ENDDO |
---|
| 717 | |
---|
[4380] | 718 | ! Calculation of saturation specific humidity and ice fraction |
---|
[4226] | 719 | CALL calc_qsat_ecmwf(klon,Tbef(:),qtot(:),pplay(:,k),RTT,0,.false.,zqs(:),zdqs(:)) |
---|
| 720 | CALL calc_gammasat(klon,Tbef(:),qtot(:),pplay(:,k),gammasat(:),dgammasatdt(:)) |
---|
[4072] | 721 | ! saturation may occur at a humidity different from qsat (gamma qsat), so gamma correction for dqs |
---|
| 722 | zdqs(:) = gammasat(:)*zdqs(:)+zqs(:)*dgammasatdt(:) |
---|
[4226] | 723 | CALL icefrac_lscp(klon, zt(:),pplay(:,k)/paprs(:,1),zfice(:),dzfice(:)) |
---|
[4072] | 724 | |
---|
[4424] | 725 | DO i=1,klon !todoan : check if loop in i is needed |
---|
[4072] | 726 | |
---|
[4424] | 727 | IF ((keepgoing(i) .OR. (n_i(i) .EQ. 0)) .AND. lognormale(i)) THEN |
---|
[4072] | 728 | |
---|
[3999] | 729 | zpdf_sig(i)=ratqs(i,k)*zq(i) |
---|
| 730 | zpdf_k(i)=-sqrt(log(1.+(zpdf_sig(i)/zq(i))**2)) |
---|
| 731 | zpdf_delta(i)=log(zq(i)/(gammasat(i)*zqs(i))) |
---|
| 732 | zpdf_a(i)=zpdf_delta(i)/(zpdf_k(i)*sqrt(2.)) |
---|
| 733 | zpdf_b(i)=zpdf_k(i)/(2.*sqrt(2.)) |
---|
| 734 | zpdf_e1(i)=zpdf_a(i)-zpdf_b(i) |
---|
| 735 | zpdf_e1(i)=sign(min(ABS(zpdf_e1(i)),5.),zpdf_e1(i)) |
---|
| 736 | zpdf_e1(i)=1.-erf(zpdf_e1(i)) |
---|
| 737 | zpdf_e2(i)=zpdf_a(i)+zpdf_b(i) |
---|
| 738 | zpdf_e2(i)=sign(min(ABS(zpdf_e2(i)),5.),zpdf_e2(i)) |
---|
| 739 | zpdf_e2(i)=1.-erf(zpdf_e2(i)) |
---|
[4226] | 740 | |
---|
[4062] | 741 | IF ((.NOT.ok_ice_sursat).OR.(Tbef(i).GT.t_glace_min)) THEN |
---|
[4059] | 742 | |
---|
| 743 | IF (zpdf_e1(i).LT.1.e-10) THEN |
---|
| 744 | rneb(i,k)=0. |
---|
| 745 | zqn(i)=gammasat(i)*zqs(i) |
---|
| 746 | ELSE |
---|
| 747 | rneb(i,k)=0.5*zpdf_e1(i) |
---|
| 748 | zqn(i)=zq(i)*zpdf_e2(i)/zpdf_e1(i) |
---|
| 749 | ENDIF |
---|
| 750 | |
---|
[4072] | 751 | rnebss(i,k)=0.0 !--added by OB (needed because of the convergence loop on time) |
---|
[4059] | 752 | fcontrN(i,k)=0.0 !--idem |
---|
| 753 | fcontrP(i,k)=0.0 !--idem |
---|
| 754 | qss(i,k)=0.0 !--idem |
---|
[4226] | 755 | |
---|
[4424] | 756 | ELSE ! in case of ice supersaturation by Audran |
---|
[4226] | 757 | |
---|
[4059] | 758 | !------------------------------------ |
---|
[4072] | 759 | ! ICE SUPERSATURATION |
---|
[4059] | 760 | !------------------------------------ |
---|
[3999] | 761 | |
---|
[4059] | 762 | CALL ice_sursat(pplay(i,k), paprs(i,k)-paprs(i,k+1), dtime, i, k, t(i,k), zq(i), & |
---|
[4226] | 763 | gamma_ss(i,k), zqs(i), Tbef(i), rneb_seri(i,k), ratqs(i,k), & |
---|
| 764 | rneb(i,k), zqn(i), rnebss(i,k), qss(i,k), & |
---|
[4059] | 765 | Tcontr(i,k), qcontr(i,k), qcontr2(i,k), fcontrN(i,k), fcontrP(i,k) ) |
---|
| 766 | |
---|
| 767 | ENDIF ! ((flag_ice_sursat.eq.0).or.(Tbef(i).gt.t_glace_min)) |
---|
| 768 | |
---|
[3999] | 769 | ! If vertical heterogeneity, change fraction by volume as well |
---|
| 770 | IF (iflag_cloudth_vert.GE.3) THEN |
---|
| 771 | ctot_vol(i,k)=rneb(i,k) |
---|
| 772 | rneblsvol(i,k)=ctot_vol(i,k) |
---|
| 773 | ENDIF |
---|
| 774 | |
---|
| 775 | |
---|
[4072] | 776 | ! P2.2.2> Approximative calculation of temperature variation DT |
---|
| 777 | ! due to condensation. |
---|
| 778 | ! Calculated variables: |
---|
| 779 | ! dT : temperature change due to condensation |
---|
| 780 | !--------------------------------------------------------------- |
---|
[3999] | 781 | |
---|
| 782 | |
---|
| 783 | IF (zfice(i).LT.1) THEN |
---|
| 784 | cste=RLVTT |
---|
| 785 | ELSE |
---|
| 786 | cste=RLSTT |
---|
| 787 | ENDIF |
---|
| 788 | |
---|
| 789 | qlbef(i)=max(0.,zqn(i)-zqs(i)) |
---|
| 790 | num = -Tbef(i)+zt(i)+rneb(i,k)*((1-zfice(i))*RLVTT & |
---|
[4226] | 791 | +zfice(i)*RLSTT)/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))*qlbef(i) |
---|
[3999] | 792 | denom = 1.+rneb(i,k)*((1-zfice(i))*RLVTT+zfice(i)*RLSTT)/cste*zdqs(i) & |
---|
| 793 | -(RLSTT-RLVTT)/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)))*rneb(i,k) & |
---|
[4226] | 794 | *qlbef(i)*dzfice(i) |
---|
[4424] | 795 | ! here we update a provisory temperature variable that only serves in the iteration |
---|
| 796 | ! process |
---|
[3999] | 797 | DT(i)=num/denom |
---|
| 798 | n_i(i)=n_i(i)+1 |
---|
| 799 | |
---|
[4424] | 800 | ENDIF ! end keepgoing |
---|
[3999] | 801 | |
---|
| 802 | ENDDO ! end loop on i |
---|
| 803 | |
---|
| 804 | ENDDO ! iter=1,iflag_fisrtilp_qsat+1 |
---|
| 805 | |
---|
| 806 | ! P2.3> Final quantities calculation |
---|
| 807 | ! Calculated variables: |
---|
| 808 | ! rneb : cloud fraction |
---|
| 809 | ! zcond: mean condensed water in the mesh |
---|
| 810 | ! zqn : mean water vapor in the mesh |
---|
| 811 | ! zt : temperature |
---|
| 812 | ! rhcl : clear-sky relative humidity |
---|
| 813 | ! ---------------------------------------------------------------- |
---|
| 814 | |
---|
| 815 | ! Water vapor update, Phase determination and subsequent latent heat exchange |
---|
| 816 | |
---|
| 817 | ! Partition function in stratiform clouds (will be overwritten in boundary-layer MPCs) |
---|
[4226] | 818 | CALL icefrac_lscp(klon,zt(:),pplay(:,k)/paprs(:,1),zfice(:), dzfice(:)) |
---|
[3999] | 819 | |
---|
| 820 | DO i=1, klon |
---|
| 821 | |
---|
| 822 | |
---|
| 823 | IF (mpc_bl_points(i,k) .GT. 0) THEN |
---|
| 824 | zcond(i) = MAX(0.0,qincloud_mpc(i))*rneb(i,k) |
---|
| 825 | ! following line is very strange and probably wrong |
---|
| 826 | rhcl(i,k)= (zqs(i)+zq(i))/2./zqs(i) |
---|
| 827 | ! water vapor update and partition function if thermals |
---|
| 828 | zq(i) = zq(i) - zcond(i) |
---|
| 829 | zfice(i)=icefrac_mpc(i,k) |
---|
| 830 | |
---|
| 831 | ELSE |
---|
| 832 | |
---|
| 833 | ! Checks on rneb, rhcl and zqn |
---|
| 834 | IF (rneb(i,k) .LE. 0.0) THEN |
---|
| 835 | zqn(i) = 0.0 |
---|
| 836 | rneb(i,k) = 0.0 |
---|
| 837 | zcond(i) = 0.0 |
---|
| 838 | rhcl(i,k)=zq(i)/zqs(i) |
---|
| 839 | ELSE IF (rneb(i,k) .GE. 1.0) THEN |
---|
| 840 | zqn(i) = zq(i) |
---|
| 841 | rneb(i,k) = 1.0 |
---|
| 842 | zcond(i) = MAX(0.0,zqn(i)-gammasat(i)*zqs(i)) |
---|
| 843 | rhcl(i,k)=1.0 |
---|
| 844 | ELSE |
---|
| 845 | zcond(i) = MAX(0.0,zqn(i)-gammasat(i)*zqs(i))*rneb(i,k) |
---|
| 846 | ! following line is very strange and probably wrong: |
---|
| 847 | rhcl(i,k)=(zqs(i)+zq(i))/2./zqs(i) |
---|
| 848 | ENDIF |
---|
| 849 | |
---|
[4226] | 850 | ! water vapor update |
---|
| 851 | zq(i) = zq(i) - zcond(i) |
---|
[3999] | 852 | |
---|
| 853 | ENDIF |
---|
| 854 | |
---|
[4392] | 855 | ! c_iso : routine that computes in-cloud supersaturation |
---|
| 856 | ! c_iso condensation of isotopes (zcond, zsursat, zfice, zq in input) |
---|
| 857 | |
---|
[3999] | 858 | ! temperature update due to phase change |
---|
| 859 | zt(i) = zt(i) + (1.-zfice(i))*zcond(i) & |
---|
| 860 | & * RLVTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) & |
---|
| 861 | +zfice(i)*zcond(i) * RLSTT/RCPD/(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) |
---|
| 862 | ENDDO |
---|
| 863 | |
---|
| 864 | ! If vertical heterogeneity, change volume fraction |
---|
| 865 | IF (iflag_cloudth_vert .GE. 3) THEN |
---|
| 866 | ctot_vol(1:klon,k)=min(max(ctot_vol(1:klon,k),0.),1.) |
---|
| 867 | rneblsvol(1:klon,k)=ctot_vol(1:klon,k) |
---|
| 868 | ENDIF |
---|
| 869 | |
---|
| 870 | ! ---------------------------------------------------------------- |
---|
[4114] | 871 | ! P3> Precipitation formation |
---|
[3999] | 872 | ! ---------------------------------------------------------------- |
---|
[4226] | 873 | |
---|
[3999] | 874 | ! LTP: |
---|
| 875 | IF (iflag_evap_prec==4) THEN |
---|
| 876 | |
---|
| 877 | !Partitionning between precipitation coming from clouds and that coming from CS |
---|
| 878 | |
---|
| 879 | !0) Calculate tot_zneb, total cloud fraction above the cloud |
---|
| 880 | !assuming a maximum-random overlap (voir Jakob and Klein, 2000) |
---|
| 881 | |
---|
| 882 | DO i=1, klon |
---|
[4424] | 883 | tot_znebn(i) = 1. - (1.-tot_zneb(i))*(1 - max(rneb(i,k),zneb(i))) & |
---|
| 884 | /(1.-min(zneb(i),1.-smallestreal)) |
---|
[3999] | 885 | d_tot_zneb(i) = tot_znebn(i) - tot_zneb(i) |
---|
| 886 | tot_zneb(i) = tot_znebn(i) |
---|
| 887 | |
---|
| 888 | |
---|
| 889 | !1) Cloudy to clear air |
---|
| 890 | d_znebprecip_cld_clr(i) = znebprecipcld(i) - min(rneb(i,k),znebprecipcld(i)) |
---|
[4424] | 891 | IF (znebprecipcld(i) .GT. 0.) THEN |
---|
[3999] | 892 | d_zrfl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*zrflcld(i) |
---|
| 893 | d_zifl_cld_clr(i) = d_znebprecip_cld_clr(i)/znebprecipcld(i)*ziflcld(i) |
---|
| 894 | ELSE |
---|
| 895 | d_zrfl_cld_clr(i) = 0. |
---|
| 896 | d_zifl_cld_clr(i) = 0. |
---|
| 897 | ENDIF |
---|
| 898 | |
---|
| 899 | !2) Clear to cloudy air |
---|
[4226] | 900 | d_znebprecip_clr_cld(i) = max(0., min(znebprecipclr(i), rneb(i,k) - d_tot_zneb(i) - zneb(i))) |
---|
[3999] | 901 | IF (znebprecipclr(i) .GT. 0) THEN |
---|
| 902 | d_zrfl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*zrflclr(i) |
---|
| 903 | d_zifl_clr_cld(i) = d_znebprecip_clr_cld(i)/znebprecipclr(i)*ziflclr(i) |
---|
| 904 | ELSE |
---|
| 905 | d_zrfl_clr_cld(i) = 0. |
---|
| 906 | d_zifl_clr_cld(i) = 0. |
---|
| 907 | ENDIF |
---|
| 908 | |
---|
| 909 | !Update variables |
---|
[4226] | 910 | znebprecipcld(i) = znebprecipcld(i) + d_znebprecip_clr_cld(i) - d_znebprecip_cld_clr(i) |
---|
[3999] | 911 | znebprecipclr(i) = znebprecipclr(i) + d_znebprecip_cld_clr(i) - d_znebprecip_clr_cld(i) |
---|
| 912 | zrflcld(i) = zrflcld(i) + d_zrfl_clr_cld(i) - d_zrfl_cld_clr(i) |
---|
| 913 | ziflcld(i) = ziflcld(i) + d_zifl_clr_cld(i) - d_zifl_cld_clr(i) |
---|
| 914 | zrflclr(i) = zrflclr(i) + d_zrfl_cld_clr(i) - d_zrfl_clr_cld(i) |
---|
| 915 | ziflclr(i) = ziflclr(i) + d_zifl_cld_clr(i) - d_zifl_clr_cld(i) |
---|
| 916 | |
---|
[4392] | 917 | ! c_iso do the same thing for isotopes precip |
---|
[3999] | 918 | ENDDO |
---|
| 919 | ENDIF |
---|
| 920 | |
---|
[4412] | 921 | ! Initialisation of zoliq and radocond variables |
---|
[3999] | 922 | |
---|
| 923 | DO i = 1, klon |
---|
| 924 | zoliq(i) = zcond(i) |
---|
[4072] | 925 | zoliqi(i)= zoliq(i)*zfice(i) |
---|
| 926 | zoliql(i)= zoliq(i)*(1.-zfice(i)) |
---|
[4392] | 927 | ! c_iso : initialisation of zoliq* also for isotopes |
---|
[4114] | 928 | zrho(i,k) = pplay(i,k) / zt(i) / RD |
---|
| 929 | zdz(i) = (paprs(i,k)-paprs(i,k+1)) / (zrho(i,k)*RG) |
---|
[4072] | 930 | iwc(i) = 0. |
---|
| 931 | zneb(i) = MAX(rneb(i,k),seuil_neb) |
---|
[4412] | 932 | radocond(i,k) = zoliq(i)/REAL(ninter+1) |
---|
[3999] | 933 | radicefrac(i,k) = zfice(i) |
---|
[4412] | 934 | radocondi(i,k)=zoliq(i)*zfice(i)/REAL(ninter+1) |
---|
| 935 | radocondl(i,k)=zoliq(i)*(1.-zfice(i))/REAL(ninter+1) |
---|
[3999] | 936 | ENDDO |
---|
| 937 | |
---|
[4114] | 938 | ! Autoconversion |
---|
[3999] | 939 | ! ------------------------------------------------------------------------------- |
---|
| 940 | |
---|
| 941 | DO n = 1, ninter |
---|
| 942 | |
---|
| 943 | DO i=1,klon |
---|
| 944 | IF (rneb(i,k).GT.0.0) THEN |
---|
[4114] | 945 | iwc(i) = zrho(i,k) * zoliqi(i) / zneb(i) ! in-cloud ice condensate content |
---|
[3999] | 946 | ENDIF |
---|
| 947 | ENDDO |
---|
| 948 | |
---|
[4226] | 949 | CALL fallice_velocity(klon,iwc(:),zt(:),zrho(:,k),pplay(:,k),ptconv(:,k),velo(:,k)) |
---|
[3999] | 950 | |
---|
| 951 | DO i = 1, klon |
---|
| 952 | |
---|
| 953 | IF (rneb(i,k).GT.0.0) THEN |
---|
| 954 | |
---|
[4072] | 955 | ! Initialization of zrain, zsnow and zprecip: |
---|
| 956 | zrain=0. |
---|
| 957 | zsnow=0. |
---|
| 958 | zprecip=0. |
---|
[4392] | 959 | ! c_iso same init for isotopes. Externalisation? |
---|
[3999] | 960 | |
---|
| 961 | IF (zneb(i).EQ.seuil_neb) THEN |
---|
[4072] | 962 | zprecip = 0.0 |
---|
| 963 | zsnow = 0.0 |
---|
| 964 | zrain= 0.0 |
---|
[3999] | 965 | ELSE |
---|
[4420] | 966 | |
---|
| 967 | IF (ok_debug_autoconversion) THEN ! if condition to be removed after test phase |
---|
| 968 | |
---|
[3999] | 969 | ! water quantity to remove: zchau (Sundqvist, 1978) |
---|
| 970 | ! same thing for the ice: zfroi (Zender & Kiehl, 1997) |
---|
| 971 | IF (ptconv(i,k)) THEN ! if convective point |
---|
| 972 | zcl=cld_lc_con |
---|
| 973 | zct=1./cld_tau_con |
---|
[4397] | 974 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliqi(i)*velo(i,k) |
---|
[3999] | 975 | ELSE |
---|
| 976 | zcl=cld_lc_lsc |
---|
| 977 | zct=1./cld_tau_lsc |
---|
[4397] | 978 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliqi(i) & ! dqice/dt=1/rho*d(rho*wice*qice)/dz |
---|
| 979 | *velo(i,k) |
---|
[3999] | 980 | ENDIF |
---|
| 981 | |
---|
| 982 | ! if vertical heterogeneity is taken into account, we use |
---|
| 983 | ! the "true" volume fraction instead of a modified |
---|
| 984 | ! surface fraction (which is larger and artificially |
---|
| 985 | ! reduces the in-cloud water). |
---|
[4072] | 986 | |
---|
[3999] | 987 | IF ((iflag_cloudth_vert.GE.3).AND.(iflag_rain_incloud_vol.EQ.1)) THEN |
---|
[4397] | 988 | zchau = zct *dtime/REAL(ninter) * zoliql(i) & |
---|
| 989 | *(1.0-EXP(-(zoliql(i)/ctot_vol(i,k)/zcl)**2)) |
---|
[3999] | 990 | ELSE |
---|
[4397] | 991 | zchau = zct *dtime/REAL(ninter) * zoliql(i) & |
---|
| 992 | *(1.0-EXP(-(zoliql(i)/zneb(i)/zcl)**2)) ! dqliq/dt=-qliq/tau*(1-exp(-qcin/clw)**2) |
---|
[3999] | 993 | ENDIF |
---|
| 994 | |
---|
[4420] | 995 | ELSE ! with old bug in autoconversion |
---|
| 996 | |
---|
| 997 | ! water quantity to remove: zchau (Sundqvist, 1978) |
---|
| 998 | ! same thing for the ice: zfroi (Zender & Kiehl, 1997) |
---|
| 999 | IF (ptconv(i,k)) THEN ! if convective point |
---|
| 1000 | zcl=cld_lc_con |
---|
| 1001 | zct=1./cld_tau_con |
---|
| 1002 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliq(i)*velo(i,k)*zfice(i) |
---|
| 1003 | ELSE |
---|
| 1004 | zcl=cld_lc_lsc |
---|
| 1005 | zct=1./cld_tau_lsc |
---|
| 1006 | zfroi = dtime/REAL(ninter)/zdz(i)*zoliq(i) & ! dqice/dt=1/rho*d(rho*wice*qice)/dz |
---|
| 1007 | *velo(i,k) * zfice(i) |
---|
| 1008 | ENDIF |
---|
| 1009 | |
---|
| 1010 | ! if vertical heterogeneity is taken into account, we use |
---|
| 1011 | ! the "true" volume fraction instead of a modified |
---|
| 1012 | ! surface fraction (which is larger and artificially |
---|
| 1013 | ! reduces the in-cloud water). |
---|
| 1014 | |
---|
| 1015 | |
---|
| 1016 | IF ((iflag_cloudth_vert.GE.3).AND.(iflag_rain_incloud_vol.EQ.1)) THEN |
---|
| 1017 | zchau = zct *dtime/REAL(ninter) * zoliq(i) & |
---|
| 1018 | *(1.0-EXP(-(zoliq(i)/ctot_vol(i,k)/zcl)**2)) *(1.-zfice(i)) |
---|
| 1019 | ELSE |
---|
| 1020 | zchau = zct *dtime/REAL(ninter) * zoliq(i) & |
---|
| 1021 | *(1.0-EXP(-(zoliq(i)/zneb(i)/zcl)**2)) *(1.-zfice(i)) ! dqliq/dt=-qliq/tau*(1-exp(-qcin/clw)**2) |
---|
| 1022 | ENDIF |
---|
| 1023 | |
---|
| 1024 | ENDIF ! ok_debug_autoconversion |
---|
| 1025 | |
---|
[4397] | 1026 | zrain = MIN(MAX(zchau,0.0),zoliql(i)) |
---|
| 1027 | zsnow = MIN(MAX(zfroi,0.0),zoliqi(i)) |
---|
[4072] | 1028 | zprecip = MAX(zrain + zsnow,0.0) |
---|
[3999] | 1029 | |
---|
| 1030 | ENDIF |
---|
[4226] | 1031 | |
---|
[4072] | 1032 | zoliql(i) = MAX(zoliq(i)*(1.-zfice(i))-1.*zrain , 0.0) |
---|
| 1033 | zoliqi(i) = MAX(zoliq(i)*zfice(i)-1.*zsnow , 0.0) |
---|
| 1034 | zoliq(i) = MAX(zoliq(i)-zprecip , 0.0) |
---|
[3999] | 1035 | |
---|
[4392] | 1036 | ! c_iso: call isotope_conversion (for readibility) or duplicate |
---|
| 1037 | |
---|
[4412] | 1038 | radocond(i,k) = radocond(i,k) + zoliq(i)/REAL(ninter+1) |
---|
| 1039 | radocondl(i,k) = radocondl(i,k) + zoliql(i)/REAL(ninter+1) |
---|
| 1040 | radocondi(i,k) = radocondi(i,k) + zoliqi(i)/REAL(ninter+1) |
---|
[4226] | 1041 | |
---|
[4072] | 1042 | ENDIF ! rneb >0 |
---|
[3999] | 1043 | |
---|
| 1044 | ENDDO ! i = 1,klon |
---|
| 1045 | |
---|
| 1046 | ENDDO ! n = 1,niter |
---|
| 1047 | |
---|
[4072] | 1048 | ! Precipitation flux calculation |
---|
[3999] | 1049 | |
---|
| 1050 | DO i = 1, klon |
---|
[4380] | 1051 | |
---|
| 1052 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 1053 | ziflprev(i)=ziflcld(i) |
---|
| 1054 | ELSE |
---|
| 1055 | ziflprev(i)=zifl(i)*zneb(i) |
---|
| 1056 | ENDIF |
---|
[3999] | 1057 | |
---|
| 1058 | IF (rneb(i,k) .GT. 0.0) THEN |
---|
| 1059 | |
---|
[4072] | 1060 | ! CR&JYG: We account for the Wegener-Findeisen-Bergeron process in the precipitation flux: |
---|
| 1061 | ! If T<0C, liquid precip are converted into ice, which leads to an increase in |
---|
| 1062 | ! temperature DeltaT. The effect of DeltaT on condensates and precipitation is roughly |
---|
| 1063 | ! taken into account through a linearization of the equations and by approximating |
---|
| 1064 | ! the liquid precipitation process with a "threshold" process. We assume that |
---|
| 1065 | ! condensates are not modified during this operation. Liquid precipitation is |
---|
| 1066 | ! removed (in the limit DeltaT<273.15-T). Solid precipitation increases. |
---|
| 1067 | ! Water vapor increases as well |
---|
| 1068 | ! Note that compared to fisrtilp, we always assume iflag_bergeron=2 |
---|
| 1069 | |
---|
| 1070 | zqpreci(i)=(zcond(i)-zoliq(i))*zfice(i) |
---|
| 1071 | zqprecl(i)=(zcond(i)-zoliq(i))*(1.-zfice(i)) |
---|
| 1072 | zcp=RCPD*(1.0+RVTMP2*(zq(i)+zmqc(i)+zcond(i))) |
---|
| 1073 | coef1 = rneb(i,k)*RLSTT/zcp*zdqsdT_raw(i) |
---|
| 1074 | ! Computation of DT if all the liquid precip freezes |
---|
| 1075 | DeltaT = RLMLT*zqprecl(i) / (zcp*(1.+coef1)) |
---|
| 1076 | ! T should not exceed the freezing point |
---|
| 1077 | ! that is Delta > RTT-zt(i) |
---|
| 1078 | DeltaT = max( min( RTT-zt(i), DeltaT) , 0. ) |
---|
| 1079 | zt(i) = zt(i) + DeltaT |
---|
| 1080 | ! water vaporization due to temp. increase |
---|
| 1081 | Deltaq = rneb(i,k)*zdqsdT_raw(i)*DeltaT |
---|
| 1082 | ! we add this vaporized water to the total vapor and we remove it from the precip |
---|
| 1083 | zq(i) = zq(i) + Deltaq |
---|
| 1084 | ! The three "max" lines herebelow protect from rounding errors |
---|
| 1085 | zcond(i) = max( zcond(i)- Deltaq, 0. ) |
---|
| 1086 | ! liquid precipitation converted to ice precip |
---|
| 1087 | Deltaqprecl = -zcp/RLMLT*(1.+coef1)*DeltaT |
---|
| 1088 | zqprecl(i) = max( zqprecl(i) + Deltaqprecl, 0. ) |
---|
| 1089 | ! iced water budget |
---|
| 1090 | zqpreci(i) = max (zqpreci(i) - Deltaqprecl - Deltaq, 0.) |
---|
[4226] | 1091 | |
---|
[4392] | 1092 | ! c_iso : mv here condensation of isotopes + redispatchage en precip |
---|
| 1093 | |
---|
[4226] | 1094 | IF (iflag_evap_prec.EQ.4) THEN |
---|
| 1095 | zrflcld(i) = zrflcld(i)+zqprecl(i) & |
---|
| 1096 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1097 | ziflcld(i) = ziflcld(i)+ zqpreci(i) & |
---|
| 1098 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1099 | znebprecipcld(i) = rneb(i,k) |
---|
| 1100 | zrfl(i) = zrflcld(i) + zrflclr(i) |
---|
| 1101 | zifl(i) = ziflcld(i) + ziflclr(i) |
---|
| 1102 | ELSE |
---|
[3999] | 1103 | zrfl(i) = zrfl(i)+ zqprecl(i) & |
---|
| 1104 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
| 1105 | zifl(i) = zifl(i)+ zqpreci(i) & |
---|
[4226] | 1106 | *(paprs(i,k)-paprs(i,k+1))/(RG*dtime) |
---|
[3999] | 1107 | ENDIF |
---|
[4392] | 1108 | ! c_iso : same for isotopes |
---|
[3999] | 1109 | |
---|
| 1110 | ENDIF ! rneb>0 |
---|
| 1111 | |
---|
| 1112 | ENDDO |
---|
| 1113 | |
---|
[4226] | 1114 | ! LTP: limit of surface cloud fraction covered by precipitation when the local intensity of the flux is below rain_int_min |
---|
| 1115 | ! if iflag_evap_pre=4 |
---|
| 1116 | IF (iflag_evap_prec.EQ.4) THEN |
---|
[4114] | 1117 | |
---|
[4226] | 1118 | DO i=1,klon |
---|
[4114] | 1119 | |
---|
[4226] | 1120 | IF ((zrflclr(i) + ziflclr(i)) .GT. 0. ) THEN |
---|
[3999] | 1121 | znebprecipclr(i) = min(znebprecipclr(i),max(zrflclr(i)/ & |
---|
| 1122 | (MAX(znebprecipclr(i),seuil_neb)*rain_int_min), ziflclr(i)/(MAX(znebprecipclr(i),seuil_neb)*rain_int_min))) |
---|
| 1123 | ELSE |
---|
[4226] | 1124 | znebprecipclr(i)=0.0 |
---|
| 1125 | ENDIF |
---|
| 1126 | |
---|
| 1127 | IF ((zrflcld(i) + ziflcld(i)) .GT. 0.) THEN |
---|
[3999] | 1128 | znebprecipcld(i) = min(znebprecipcld(i), max(zrflcld(i)/ & |
---|
| 1129 | (MAX(znebprecipcld(i),seuil_neb)*rain_int_min), ziflcld(i)/(MAX(znebprecipcld(i),seuil_neb)*rain_int_min))) |
---|
[4226] | 1130 | ELSE |
---|
| 1131 | znebprecipcld(i)=0.0 |
---|
| 1132 | ENDIF |
---|
[3999] | 1133 | |
---|
[4226] | 1134 | ENDDO |
---|
[3999] | 1135 | |
---|
[4226] | 1136 | ENDIF |
---|
[3999] | 1137 | |
---|
| 1138 | ! End of precipitation formation |
---|
| 1139 | ! -------------------------------- |
---|
| 1140 | |
---|
| 1141 | ! Outputs: |
---|
| 1142 | ! Precipitation fluxes at layer interfaces |
---|
[4072] | 1143 | ! and temperature and water species tendencies |
---|
[3999] | 1144 | DO i = 1, klon |
---|
| 1145 | psfl(i,k)=zifl(i) |
---|
| 1146 | prfl(i,k)=zrfl(i) |
---|
[4072] | 1147 | d_ql(i,k) = (1-zfice(i))*zoliq(i) |
---|
| 1148 | d_qi(i,k) = zfice(i)*zoliq(i) |
---|
[3999] | 1149 | d_q(i,k) = zq(i) - q(i,k) |
---|
[4392] | 1150 | ! c_iso: same for isotopes |
---|
[3999] | 1151 | d_t(i,k) = zt(i) - t(i,k) |
---|
| 1152 | ENDDO |
---|
| 1153 | |
---|
[4114] | 1154 | ! Calculation of the concentration of condensates seen by the radiation scheme |
---|
[4412] | 1155 | ! for liquid phase, we take radocondl |
---|
| 1156 | ! for ice phase, we take radocondi if we neglect snowfall, otherwise (ok_radocond_snow=true) |
---|
| 1157 | ! we recaulate radocondi to account for contributions from the precipitation flux |
---|
[3999] | 1158 | |
---|
[4412] | 1159 | IF ((ok_radocond_snow) .AND. (k .LT. klev)) THEN |
---|
[4114] | 1160 | ! for the solid phase (crystals + snowflakes) |
---|
[4412] | 1161 | ! we recalculate radocondi by summing |
---|
[4114] | 1162 | ! the ice content calculated in the mesh |
---|
| 1163 | ! + the contribution of the non-evaporated snowfall |
---|
| 1164 | ! from the overlying layer |
---|
| 1165 | DO i=1,klon |
---|
| 1166 | IF (ziflprev(i) .NE. 0.0) THEN |
---|
[4412] | 1167 | radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i)+ziflprev(i)/zrho(i,k+1)/velo(i,k+1) |
---|
[4114] | 1168 | ELSE |
---|
[4412] | 1169 | radocondi(i,k)=zoliq(i)*zfice(i)+zqpreci(i) |
---|
[4114] | 1170 | ENDIF |
---|
[4412] | 1171 | radocond(i,k)=radocondl(i,k)+radocondi(i,k) |
---|
[4114] | 1172 | ENDDO |
---|
| 1173 | ENDIF |
---|
| 1174 | |
---|
[4412] | 1175 | ! caculate the percentage of ice in "radocond" so cloud+precip seen by the radiation scheme |
---|
[4114] | 1176 | DO i=1,klon |
---|
[4412] | 1177 | IF (radocond(i,k) .GT. 0.) THEN |
---|
| 1178 | radicefrac(i,k)=MIN(MAX(radocondi(i,k)/radocond(i,k),0.),1.) |
---|
[4114] | 1179 | ENDIF |
---|
| 1180 | ENDDO |
---|
| 1181 | |
---|
[3999] | 1182 | ! ---------------------------------------------------------------- |
---|
| 1183 | ! P4> Wet scavenging |
---|
| 1184 | ! ---------------------------------------------------------------- |
---|
| 1185 | |
---|
| 1186 | !Scavenging through nucleation in the layer |
---|
| 1187 | |
---|
| 1188 | DO i = 1,klon |
---|
| 1189 | |
---|
| 1190 | IF(zcond(i).GT.zoliq(i)+1.e-10) THEN |
---|
| 1191 | beta(i,k) = (zcond(i)-zoliq(i))/zcond(i)/dtime |
---|
| 1192 | ELSE |
---|
| 1193 | beta(i,k) = 0. |
---|
| 1194 | ENDIF |
---|
| 1195 | |
---|
[4059] | 1196 | zprec_cond(i) = MAX(zcond(i)-zoliq(i),0.0)*(paprs(i,k)-paprs(i,k+1))/RG |
---|
[3999] | 1197 | |
---|
| 1198 | IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN |
---|
| 1199 | |
---|
| 1200 | IF (t(i,k) .GE. t_glace_min) THEN |
---|
| 1201 | zalpha_tr = a_tr_sca(3) |
---|
| 1202 | ELSE |
---|
| 1203 | zalpha_tr = a_tr_sca(4) |
---|
| 1204 | ENDIF |
---|
| 1205 | |
---|
| 1206 | zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i)) |
---|
| 1207 | frac_nucl(i,k)= 1.-zneb(i)*zfrac_lessi |
---|
[4226] | 1208 | |
---|
[3999] | 1209 | ! Nucleation with a factor of -1 instead of -0.5 |
---|
| 1210 | zfrac_lessi = 1. - EXP(-zprec_cond(i)/zneb(i)) |
---|
| 1211 | |
---|
| 1212 | ENDIF |
---|
| 1213 | |
---|
[4226] | 1214 | ENDDO |
---|
| 1215 | |
---|
[3999] | 1216 | ! Scavenging through impaction in the underlying layer |
---|
| 1217 | |
---|
| 1218 | DO kk = k-1, 1, -1 |
---|
| 1219 | |
---|
| 1220 | DO i = 1, klon |
---|
| 1221 | |
---|
| 1222 | IF (rneb(i,k).GT.0.0.AND.zprec_cond(i).GT.0.) THEN |
---|
| 1223 | |
---|
| 1224 | IF (t(i,kk) .GE. t_glace_min) THEN |
---|
| 1225 | zalpha_tr = a_tr_sca(1) |
---|
| 1226 | ELSE |
---|
| 1227 | zalpha_tr = a_tr_sca(2) |
---|
| 1228 | ENDIF |
---|
| 1229 | |
---|
| 1230 | zfrac_lessi = 1. - EXP(zalpha_tr*zprec_cond(i)/zneb(i)) |
---|
| 1231 | frac_impa(i,kk)= 1.-zneb(i)*zfrac_lessi |
---|
| 1232 | |
---|
| 1233 | ENDIF |
---|
| 1234 | |
---|
| 1235 | ENDDO |
---|
| 1236 | |
---|
| 1237 | ENDDO |
---|
[4226] | 1238 | |
---|
[4072] | 1239 | !--save some variables for ice supersaturation |
---|
[4059] | 1240 | ! |
---|
| 1241 | DO i = 1, klon |
---|
[4072] | 1242 | ! for memory |
---|
[4059] | 1243 | rneb_seri(i,k) = rneb(i,k) |
---|
[3999] | 1244 | |
---|
[4072] | 1245 | ! for diagnostics |
---|
[4059] | 1246 | rnebclr(i,k) = 1.0 - rneb(i,k) - rnebss(i,k) |
---|
[3999] | 1247 | |
---|
[4059] | 1248 | qvc(i,k) = zqs(i) * rneb(i,k) |
---|
[4072] | 1249 | 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] | 1250 | qcld(i,k) = qvc(i,k) + zcond(i) |
---|
[4226] | 1251 | ENDDO |
---|
[4072] | 1252 | !q_sat |
---|
[4380] | 1253 | CALL calc_qsat_ecmwf(klon,Tbef(:),qzero(:),pplay(:,k),RTT,1,.false.,qsatl(:,k),zdqs(:)) |
---|
| 1254 | CALL calc_qsat_ecmwf(klon,Tbef(:),qzero(:),pplay(:,k),RTT,2,.false.,qsats(:,k),zdqs(:)) |
---|
[4059] | 1255 | |
---|
[4226] | 1256 | ENDDO |
---|
[4059] | 1257 | |
---|
[3999] | 1258 | !====================================================================== |
---|
| 1259 | ! END OF VERTICAL LOOP |
---|
| 1260 | !====================================================================== |
---|
| 1261 | |
---|
| 1262 | ! Rain or snow at the surface (depending on the first layer temperature) |
---|
| 1263 | DO i = 1, klon |
---|
| 1264 | snow(i) = zifl(i) |
---|
| 1265 | rain(i) = zrfl(i) |
---|
[4392] | 1266 | ! c_iso final output |
---|
[3999] | 1267 | ENDDO |
---|
| 1268 | |
---|
| 1269 | IF (ncoreczq>0) THEN |
---|
| 1270 | WRITE(lunout,*)'WARNING : ZQ in LSCP ',ncoreczq,' val < 1.e-15.' |
---|
| 1271 | ENDIF |
---|
| 1272 | |
---|
[4380] | 1273 | END SUBROUTINE lscp |
---|
[3999] | 1274 | !+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
---|
| 1275 | |
---|
[4380] | 1276 | END MODULE lscp_mod |
---|