[222] | 1 | subroutine vdifc(ngrid,nlay,nq,rnat,ppopsk, |
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| 2 | & ptimestep,pcapcal,lecrit, |
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| 3 | & pplay,pplev,pzlay,pzlev,pz0, |
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| 4 | & pu,pv,ph,pq,ptsrf,pemis,pqsurf, |
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| 5 | & pdufi,pdvfi,pdhfi,pdqfi,pfluxsrf, |
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| 6 | & pdudif,pdvdif,pdhdif,pdtsrf,sensibFlux,pq2, |
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| 7 | & pdqdif,pdqsdif,lastcall) |
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| 8 | |
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| 9 | use watercommon_h, only : RLVTT, T_h2O_ice_liq, RCPD, mx_eau_sol |
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| 10 | use radcommon_h, only : sigma |
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| 11 | USE surfdat_h |
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| 12 | USE comgeomfi_h |
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| 13 | USE tracer_h |
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| 14 | |
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| 15 | implicit none |
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| 16 | |
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| 17 | !================================================================== |
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| 18 | ! |
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| 19 | ! Purpose |
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| 20 | ! ------- |
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| 21 | ! Turbulent diffusion (mixing) for pot. T, U, V and tracers |
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| 22 | ! |
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| 23 | ! Implicit scheme |
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| 24 | ! We start by adding to variables x the physical tendencies |
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| 25 | ! already computed. We resolve the equation: |
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| 26 | ! |
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| 27 | ! x(t+1) = x(t) + dt * (dx/dt)phys(t) + dt * (dx/dt)difv(t+1) |
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| 28 | ! |
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| 29 | ! Authors |
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| 30 | ! ------- |
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| 31 | ! F. Hourdin, F. Forget, R. Fournier (199X) |
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| 32 | ! R. Wordsworth, B. Charnay (2010) |
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| 33 | ! |
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| 34 | !================================================================== |
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| 35 | |
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| 36 | !----------------------------------------------------------------------- |
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| 37 | ! declarations |
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| 38 | ! ------------ |
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| 39 | |
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[227] | 40 | !#include "dimensions.h" |
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| 41 | !#include "dimphys.h" |
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[222] | 42 | #include "comcstfi.h" |
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| 43 | #include "callkeys.h" |
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| 44 | |
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| 45 | ! arguments |
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| 46 | ! --------- |
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| 47 | INTEGER ngrid,nlay |
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| 48 | REAL ptimestep |
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| 49 | REAL pplay(ngrid,nlay),pplev(ngrid,nlay+1) |
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| 50 | REAL pzlay(ngrid,nlay),pzlev(ngrid,nlay+1) |
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| 51 | REAL pu(ngrid,nlay),pv(ngrid,nlay),ph(ngrid,nlay) |
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| 52 | REAL ptsrf(ngrid),pemis(ngrid) |
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| 53 | REAL pdufi(ngrid,nlay),pdvfi(ngrid,nlay),pdhfi(ngrid,nlay) |
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| 54 | REAL pfluxsrf(ngrid) |
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| 55 | REAL pdudif(ngrid,nlay),pdvdif(ngrid,nlay),pdhdif(ngrid,nlay) |
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| 56 | REAL pdtsrf(ngrid),sensibFlux(ngrid),pcapcal(ngrid) |
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| 57 | REAL pq2(ngrid,nlay+1) |
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| 58 | |
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| 59 | real rnat(ngrid) |
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| 60 | |
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| 61 | ! Arguments added for condensation |
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| 62 | REAL ppopsk(ngrid,nlay) |
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| 63 | logical lecrit |
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| 64 | REAL pz0 |
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| 65 | |
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| 66 | ! Tracers |
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| 67 | ! -------- |
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| 68 | integer nq |
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| 69 | real pqsurf(ngrid,nq) |
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| 70 | real pq(ngrid,nlay,nq), pdqfi(ngrid,nlay,nq) |
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| 71 | real pdqdif(ngrid,nlay,nq) |
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| 72 | real pdqsdif(ngrid,nq) |
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| 73 | |
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| 74 | ! local |
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| 75 | ! ----- |
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| 76 | integer ilev,ig,ilay,nlev |
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| 77 | |
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| 78 | REAL z4st,zdplanck(ngrid) |
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[227] | 79 | REAL zkv(ngrid,nlay+1),zkh(ngrid,nlay+1) |
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[222] | 80 | REAL zcdv(ngrid),zcdh(ngrid) |
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| 81 | REAL zcdv_true(ngrid),zcdh_true(ngrid) |
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[227] | 82 | REAL zu(ngrid,nlay),zv(ngrid,nlay) |
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| 83 | REAL zh(ngrid,nlay) |
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[222] | 84 | REAL ztsrf2(ngrid) |
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| 85 | REAL z1(ngrid),z2(ngrid) |
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[227] | 86 | REAL za(ngrid,nlay),zb(ngrid,nlay) |
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| 87 | REAL zb0(ngrid,nlay) |
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| 88 | REAL zc(ngrid,nlay),zd(ngrid,nlay) |
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[222] | 89 | REAL zcst1 |
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| 90 | REAL zu2!, a |
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[227] | 91 | REAL zcq(ngrid,nlay),zdq(ngrid,nlay) |
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[222] | 92 | REAL evap(ngrid) |
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| 93 | REAL zcq0(ngrid),zdq0(ngrid) |
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| 94 | REAL zx_alf1(ngrid),zx_alf2(ngrid) |
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| 95 | |
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| 96 | LOGICAL firstcall |
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| 97 | SAVE firstcall |
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[227] | 98 | !$OMP THREADPRIVATE(firstcall) |
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[222] | 99 | |
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| 100 | LOGICAL lastcall |
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| 101 | |
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| 102 | ! variables added for CO2 condensation |
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| 103 | ! ------------------------------------ |
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[227] | 104 | REAL hh !, zhcond(ngrid,nlay) |
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[222] | 105 | ! REAL latcond,tcond1mb |
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| 106 | ! REAL acond,bcond |
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| 107 | ! SAVE acond,bcond |
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[227] | 108 | !!$OMP THREADPRIVATE(acond,bcond) |
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[222] | 109 | ! DATA latcond,tcond1mb/5.9e5,136.27/ |
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| 110 | |
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| 111 | ! Tracers |
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| 112 | ! ------- |
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| 113 | INTEGER iq |
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[227] | 114 | REAL zq(ngrid,nlay,nq) |
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[222] | 115 | REAL zq1temp(ngrid) |
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| 116 | REAL rho(ngrid) ! near-surface air density |
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| 117 | REAL qsat(ngrid) |
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| 118 | DATA firstcall/.true./ |
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| 119 | REAL kmixmin |
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| 120 | |
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| 121 | ! Variables added for implicit latent heat inclusion |
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| 122 | ! -------------------------------------------------- |
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| 123 | real latconst, dqsat(ngrid), qsat_temp1, qsat_temp2 |
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| 124 | real z1_Tdry(ngrid), z2_Tdry(ngrid) |
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| 125 | real z1_T(ngrid), z2_T(ngrid) |
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| 126 | real zb_T(ngrid) |
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[227] | 127 | real zc_T(ngrid,nlay) |
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| 128 | real zd_T(ngrid,nlay) |
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[222] | 129 | real lat1(ngrid), lat2(ngrid) |
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| 130 | real surfh2otot |
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| 131 | logical surffluxdiag |
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| 132 | integer isub ! sub-loop for precision |
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| 133 | |
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| 134 | integer ivap, iice ! also make liq for clarity on surface... |
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| 135 | save ivap, iice |
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[227] | 136 | !$OMP THREADPRIVATE(ivap,iice) |
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[222] | 137 | |
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| 138 | real, parameter :: karman=0.4 |
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| 139 | real cd0, roughratio |
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| 140 | |
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| 141 | logical forceWC |
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| 142 | real masse, Wtot, Wdiff |
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| 143 | |
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| 144 | real dqsdif_total(ngrid) |
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| 145 | real zq0(ngrid) |
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| 146 | |
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| 147 | forceWC=.true. |
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| 148 | ! forceWC=.false. |
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| 149 | |
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| 150 | |
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| 151 | ! Coherence test |
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| 152 | ! -------------- |
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| 153 | |
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| 154 | IF (firstcall) THEN |
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| 155 | ! To compute: Tcond= 1./(bcond-acond*log(.0095*p)) (p in pascal) |
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| 156 | ! bcond=1./tcond1mb |
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| 157 | ! acond=r/latcond |
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| 158 | ! PRINT*,'In vdifc: Tcond(P=1mb)=',tcond1mb,' Lcond=',latcond |
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| 159 | ! PRINT*,' acond,bcond',acond,bcond |
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| 160 | |
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| 161 | if(water)then |
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| 162 | ! iliq=igcm_h2o_vap |
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| 163 | ivap=igcm_h2o_vap |
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| 164 | iice=igcm_h2o_ice ! simply to make the code legible |
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| 165 | ! to be generalised later |
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| 166 | endif |
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| 167 | |
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| 168 | firstcall=.false. |
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| 169 | ENDIF |
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| 170 | |
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| 171 | !----------------------------------------------------------------------- |
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| 172 | ! 1. Initialisation |
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| 173 | ! ----------------- |
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| 174 | |
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| 175 | nlev=nlay+1 |
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| 176 | |
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| 177 | ! Calculate rho*dz and dt*rho/dz=dt*rho**2 g/dp |
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| 178 | ! with rho=p/RT=p/ (R Theta) (p/ps)**kappa |
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| 179 | ! --------------------------------------------- |
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| 180 | |
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| 181 | DO ilay=1,nlay |
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| 182 | DO ig=1,ngrid |
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| 183 | za(ig,ilay)=(pplev(ig,ilay)-pplev(ig,ilay+1))/g |
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| 184 | ENDDO |
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| 185 | ENDDO |
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| 186 | |
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| 187 | zcst1=4.*g*ptimestep/(R*R) |
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| 188 | DO ilev=2,nlev-1 |
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| 189 | DO ig=1,ngrid |
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| 190 | zb0(ig,ilev)=pplev(ig,ilev)* |
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| 191 | s (pplev(ig,1)/pplev(ig,ilev))**rcp / |
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| 192 | s (ph(ig,ilev-1)+ph(ig,ilev)) |
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| 193 | zb0(ig,ilev)=zcst1*zb0(ig,ilev)*zb0(ig,ilev)/ |
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| 194 | s (pplay(ig,ilev-1)-pplay(ig,ilev)) |
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| 195 | ENDDO |
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| 196 | ENDDO |
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| 197 | DO ig=1,ngrid |
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| 198 | zb0(ig,1)=ptimestep*pplev(ig,1)/(R*ptsrf(ig)) |
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| 199 | ENDDO |
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| 200 | |
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| 201 | dqsdif_total(:)=0.0 |
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| 202 | |
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| 203 | !----------------------------------------------------------------------- |
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| 204 | ! 2. Add the physical tendencies computed so far |
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| 205 | ! ---------------------------------------------- |
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| 206 | |
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| 207 | DO ilev=1,nlay |
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| 208 | DO ig=1,ngrid |
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| 209 | zu(ig,ilev)=pu(ig,ilev)+pdufi(ig,ilev)*ptimestep |
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| 210 | zv(ig,ilev)=pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep |
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| 211 | zh(ig,ilev)=ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep |
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| 212 | ENDDO |
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| 213 | ENDDO |
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| 214 | if(tracer) then |
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| 215 | DO iq =1, nq |
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| 216 | DO ilev=1,nlay |
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| 217 | DO ig=1,ngrid |
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| 218 | zq(ig,ilev,iq)=pq(ig,ilev,iq) + |
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| 219 | & pdqfi(ig,ilev,iq)*ptimestep |
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| 220 | ENDDO |
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| 221 | ENDDO |
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| 222 | ENDDO |
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| 223 | end if |
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| 224 | |
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| 225 | !----------------------------------------------------------------------- |
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| 226 | ! 3. Turbulence scheme |
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| 227 | ! -------------------- |
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| 228 | ! |
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| 229 | ! Source of turbulent kinetic energy at the surface |
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| 230 | ! ------------------------------------------------- |
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| 231 | ! Formula is Cd_0 = (karman / log[1+z1/z0])^2 |
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| 232 | |
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| 233 | DO ig=1,ngrid |
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| 234 | roughratio = 1.E+0 + pzlay(ig,1)/pz0 |
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| 235 | cd0 = karman/log(roughratio) |
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| 236 | cd0 = cd0*cd0 |
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| 237 | zcdv_true(ig) = cd0 |
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| 238 | zcdh_true(ig) = cd0 |
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| 239 | if (nosurf) then |
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| 240 | zcdv_true(ig) = 0. !! disable sensible momentum flux |
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| 241 | zcdh_true(ig) = 0. !! disable sensible heat flux |
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| 242 | endif |
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| 243 | ENDDO |
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| 244 | |
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| 245 | DO ig=1,ngrid |
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| 246 | zu2=pu(ig,1)*pu(ig,1)+pv(ig,1)*pv(ig,1) |
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| 247 | zcdv(ig)=zcdv_true(ig)*sqrt(zu2) |
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| 248 | zcdh(ig)=zcdh_true(ig)*sqrt(zu2) |
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| 249 | ENDDO |
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| 250 | |
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| 251 | ! Turbulent diffusion coefficients in the boundary layer |
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| 252 | ! ------------------------------------------------------ |
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| 253 | |
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[227] | 254 | call vdif_kc(ngrid,nlay,ptimestep,g,pzlev,pzlay |
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[222] | 255 | & ,pu,pv,ph,zcdv_true |
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| 256 | & ,pq2,zkv,zkh) |
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| 257 | |
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| 258 | ! Adding eddy mixing to mimic 3D general circulation in 1D |
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| 259 | ! R. Wordsworth & F. Forget (2010) |
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| 260 | if ((ngrid.eq.1)) then |
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| 261 | kmixmin = 1.0e-2 ! minimum eddy mix coeff in 1D |
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| 262 | do ilev=1,nlay |
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| 263 | do ig=1,ngrid |
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| 264 | !zkh(ig,ilev) = 1.0 |
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| 265 | zkh(ig,ilev) = max(kmixmin,zkh(ig,ilev)) |
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| 266 | zkv(ig,ilev) = max(kmixmin,zkv(ig,ilev)) |
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| 267 | end do |
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| 268 | end do |
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| 269 | end if |
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| 270 | |
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| 271 | !----------------------------------------------------------------------- |
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| 272 | ! 4. Implicit inversion of u |
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| 273 | ! -------------------------- |
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| 274 | |
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| 275 | ! u(t+1) = u(t) + dt * {(du/dt)phys}(t) + dt * {(du/dt)difv}(t+1) |
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| 276 | ! avec |
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| 277 | ! /zu/ = u(t) + dt * {(du/dt)phys}(t) (voir paragraphe 2.) |
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| 278 | ! et |
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| 279 | ! dt * {(du/dt)difv}(t+1) = dt * {(d/dz)[ Ku (du/dz) ]}(t+1) |
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| 280 | ! donc les entrees sont /zcdv/ pour la condition a la limite sol |
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| 281 | ! et /zkv/ = Ku |
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| 282 | |
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| 283 | CALL multipl((nlay-1)*ngrid,zkv(1,2),zb0(1,2),zb(1,2)) |
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| 284 | CALL multipl(ngrid,zcdv,zb0,zb) |
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| 285 | |
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| 286 | DO ig=1,ngrid |
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| 287 | z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) |
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| 288 | zc(ig,nlay)=za(ig,nlay)*zu(ig,nlay)*z1(ig) |
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| 289 | zd(ig,nlay)=zb(ig,nlay)*z1(ig) |
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| 290 | ENDDO |
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| 291 | |
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| 292 | DO ilay=nlay-1,1,-1 |
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| 293 | DO ig=1,ngrid |
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| 294 | z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ |
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| 295 | $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) |
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| 296 | zc(ig,ilay)=(za(ig,ilay)*zu(ig,ilay)+ |
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| 297 | $ zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) |
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| 298 | zd(ig,ilay)=zb(ig,ilay)*z1(ig) |
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| 299 | ENDDO |
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| 300 | ENDDO |
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| 301 | |
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| 302 | DO ig=1,ngrid |
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| 303 | zu(ig,1)=zc(ig,1) |
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| 304 | ENDDO |
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| 305 | DO ilay=2,nlay |
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| 306 | DO ig=1,ngrid |
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| 307 | zu(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zu(ig,ilay-1) |
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| 308 | ENDDO |
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| 309 | ENDDO |
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| 310 | |
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| 311 | !----------------------------------------------------------------------- |
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| 312 | ! 5. Implicit inversion of v |
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| 313 | ! -------------------------- |
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| 314 | |
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| 315 | ! v(t+1) = v(t) + dt * {(dv/dt)phys}(t) + dt * {(dv/dt)difv}(t+1) |
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| 316 | ! avec |
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| 317 | ! /zv/ = v(t) + dt * {(dv/dt)phys}(t) (voir paragraphe 2.) |
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| 318 | ! et |
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| 319 | ! dt * {(dv/dt)difv}(t+1) = dt * {(d/dz)[ Kv (dv/dz) ]}(t+1) |
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| 320 | ! donc les entrees sont /zcdv/ pour la condition a la limite sol |
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| 321 | ! et /zkv/ = Kv |
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| 322 | |
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| 323 | DO ig=1,ngrid |
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| 324 | z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) |
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| 325 | zc(ig,nlay)=za(ig,nlay)*zv(ig,nlay)*z1(ig) |
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| 326 | zd(ig,nlay)=zb(ig,nlay)*z1(ig) |
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| 327 | ENDDO |
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| 328 | |
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| 329 | DO ilay=nlay-1,1,-1 |
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| 330 | DO ig=1,ngrid |
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| 331 | z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ |
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| 332 | $ zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) |
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| 333 | zc(ig,ilay)=(za(ig,ilay)*zv(ig,ilay)+ |
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| 334 | $ zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) |
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| 335 | zd(ig,ilay)=zb(ig,ilay)*z1(ig) |
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| 336 | ENDDO |
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| 337 | ENDDO |
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| 338 | |
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| 339 | DO ig=1,ngrid |
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| 340 | zv(ig,1)=zc(ig,1) |
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| 341 | ENDDO |
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| 342 | DO ilay=2,nlay |
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| 343 | DO ig=1,ngrid |
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| 344 | zv(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zv(ig,ilay-1) |
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| 345 | ENDDO |
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| 346 | ENDDO |
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| 347 | |
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| 348 | !---------------------------------------------------------------------------- |
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| 349 | ! 6. Implicit inversion of h, not forgetting the coupling with the ground |
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| 350 | |
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| 351 | ! h(t+1) = h(t) + dt * {(dh/dt)phys}(t) + dt * {(dh/dt)difv}(t+1) |
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| 352 | ! avec |
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| 353 | ! /zh/ = h(t) + dt * {(dh/dt)phys}(t) (voir paragraphe 2.) |
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| 354 | ! et |
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| 355 | ! dt * {(dh/dt)difv}(t+1) = dt * {(d/dz)[ Kh (dh/dz) ]}(t+1) |
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| 356 | ! donc les entrees sont /zcdh/ pour la condition de raccord au sol |
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| 357 | ! et /zkh/ = Kh |
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| 358 | |
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| 359 | ! Using the wind modified by friction for lifting and sublimation |
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| 360 | ! --------------------------------------------------------------- |
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| 361 | DO ig=1,ngrid |
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| 362 | zu2 = zu(ig,1)*zu(ig,1)+zv(ig,1)*zv(ig,1) |
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| 363 | zcdv(ig) = zcdv_true(ig)*sqrt(zu2) |
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| 364 | zcdh(ig) = zcdh_true(ig)*sqrt(zu2) |
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| 365 | ENDDO |
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| 366 | |
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| 367 | CALL multipl((nlay-1)*ngrid,zkh(1,2),zb0(1,2),zb(1,2)) |
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| 368 | CALL multipl(ngrid,zcdh,zb0,zb) |
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| 369 | |
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| 370 | DO ig=1,ngrid |
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| 371 | z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) |
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| 372 | zc(ig,nlay)=za(ig,nlay)*zh(ig,nlay)*z1(ig) |
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| 373 | zd(ig,nlay)=zb(ig,nlay)*z1(ig) |
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| 374 | ENDDO |
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| 375 | |
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| 376 | DO ilay=nlay-1,2,-1 |
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| 377 | DO ig=1,ngrid |
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| 378 | z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ |
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| 379 | & zb(ig,ilay+1)*(1.-zd(ig,ilay+1))) |
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| 380 | zc(ig,ilay)=(za(ig,ilay)*zh(ig,ilay)+ |
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| 381 | & zb(ig,ilay+1)*zc(ig,ilay+1))*z1(ig) |
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| 382 | zd(ig,ilay)=zb(ig,ilay)*z1(ig) |
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| 383 | ENDDO |
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| 384 | ENDDO |
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| 385 | |
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| 386 | DO ig=1,ngrid |
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| 387 | z1(ig)=1./(za(ig,1)+zb(ig,1)+ |
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| 388 | & zb(ig,2)*(1.-zd(ig,2))) |
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| 389 | zc(ig,1)=(za(ig,1)*zh(ig,1)+ |
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| 390 | & zb(ig,2)*zc(ig,2))*z1(ig) |
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| 391 | zd(ig,1)=zb(ig,1)*z1(ig) |
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| 392 | ENDDO |
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| 393 | |
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| 394 | ! Calculate (d Planck / dT) at the interface temperature |
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| 395 | ! ------------------------------------------------------ |
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| 396 | |
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| 397 | z4st=4.0*sigma*ptimestep |
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| 398 | DO ig=1,ngrid |
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| 399 | zdplanck(ig)=z4st*pemis(ig)*ptsrf(ig)*ptsrf(ig)*ptsrf(ig) |
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| 400 | ENDDO |
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| 401 | |
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| 402 | ! Calculate temperature tendency at the interface (dry case) |
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| 403 | ! ---------------------------------------------------------- |
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| 404 | ! Sum of fluxes at interface at time t + \delta t gives change in T: |
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| 405 | ! radiative fluxes |
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| 406 | ! turbulent convective (sensible) heat flux |
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| 407 | ! flux (if any) from subsurface |
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| 408 | |
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| 409 | if(.not.water) then |
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| 410 | |
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| 411 | DO ig=1,ngrid |
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| 412 | |
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| 413 | z1(ig) = pcapcal(ig)*ptsrf(ig) + cpp*zb(ig,1)*zc(ig,1) |
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| 414 | & + zdplanck(ig)*ptsrf(ig) + pfluxsrf(ig)*ptimestep |
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| 415 | z2(ig) = pcapcal(ig) + cpp*zb(ig,1)*(1.-zd(ig,1)) |
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| 416 | & +zdplanck(ig) |
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| 417 | ztsrf2(ig) = z1(ig) / z2(ig) |
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| 418 | pdtsrf(ig) = (ztsrf2(ig) - ptsrf(ig))/ptimestep |
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| 419 | zh(ig,1) = zc(ig,1) + zd(ig,1)*ztsrf2(ig) |
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| 420 | ENDDO |
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| 421 | |
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| 422 | ! Recalculate temperature to top of atmosphere, starting from ground |
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| 423 | ! ------------------------------------------------------------------ |
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| 424 | |
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| 425 | DO ilay=2,nlay |
---|
| 426 | DO ig=1,ngrid |
---|
| 427 | hh = zh(ig,ilay-1) |
---|
| 428 | zh(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*hh |
---|
| 429 | ENDDO |
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| 430 | ENDDO |
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| 431 | |
---|
| 432 | endif ! not water |
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| 433 | |
---|
| 434 | !----------------------------------------------------------------------- |
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| 435 | ! TRACERS (no vapour) |
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| 436 | ! ------- |
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| 437 | |
---|
| 438 | if(tracer) then |
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| 439 | |
---|
| 440 | ! Calculate vertical flux from the bottom to the first layer (dust) |
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| 441 | ! ----------------------------------------------------------------- |
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| 442 | do ig=1,ngrid |
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| 443 | rho(ig) = zb0(ig,1) /ptimestep |
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| 444 | end do |
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| 445 | |
---|
| 446 | call zerophys(ngrid*nq,pdqsdif) |
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| 447 | |
---|
| 448 | ! Implicit inversion of q |
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| 449 | ! ----------------------- |
---|
| 450 | do iq=1,nq |
---|
| 451 | |
---|
| 452 | if (iq.ne.igcm_h2o_vap) then |
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| 453 | |
---|
| 454 | DO ig=1,ngrid |
---|
| 455 | z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) |
---|
| 456 | zcq(ig,nlay)=za(ig,nlay)*zq(ig,nlay,iq)*z1(ig) |
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| 457 | zdq(ig,nlay)=zb(ig,nlay)*z1(ig) |
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| 458 | ENDDO |
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| 459 | |
---|
| 460 | DO ilay=nlay-1,2,-1 |
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| 461 | DO ig=1,ngrid |
---|
| 462 | z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ |
---|
| 463 | & zb(ig,ilay+1)*(1.-zdq(ig,ilay+1))) |
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| 464 | zcq(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+ |
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| 465 | & zb(ig,ilay+1)*zcq(ig,ilay+1))*z1(ig) |
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| 466 | zdq(ig,ilay)=zb(ig,ilay)*z1(ig) |
---|
| 467 | ENDDO |
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| 468 | ENDDO |
---|
| 469 | |
---|
| 470 | if ((water).and.(iq.eq.iice)) then |
---|
| 471 | ! special case for water ice tracer: do not include |
---|
| 472 | ! h2o ice tracer from surface (which is set when handling |
---|
| 473 | ! h2o vapour case (see further down). |
---|
| 474 | ! zb(ig,1)=0 if iq ne ivap |
---|
| 475 | DO ig=1,ngrid |
---|
| 476 | z1(ig)=1./(za(ig,1)+ |
---|
| 477 | & zb(ig,2)*(1.-zdq(ig,2))) |
---|
| 478 | zcq(ig,1)=(za(ig,1)*zq(ig,1,iq)+ |
---|
| 479 | & zb(ig,2)*zcq(ig,2))*z1(ig) |
---|
| 480 | ENDDO |
---|
| 481 | else ! general case |
---|
| 482 | DO ig=1,ngrid |
---|
| 483 | z1(ig)=1./(za(ig,1)+ |
---|
| 484 | & zb(ig,2)*(1.-zdq(ig,2))) |
---|
| 485 | zcq(ig,1)=(za(ig,1)*zq(ig,1,iq)+ |
---|
| 486 | & zb(ig,2)*zcq(ig,2) |
---|
| 487 | & +(-pdqsdif(ig,iq))*ptimestep)*z1(ig) |
---|
| 488 | ! tracer flux from surface |
---|
| 489 | ! currently pdqsdif always zero here, |
---|
| 490 | ! so last line is superfluous |
---|
| 491 | enddo |
---|
| 492 | endif ! of if (water.and.(iq.eq.igcm_h2o_ice)) |
---|
| 493 | |
---|
| 494 | |
---|
| 495 | ! Starting upward calculations for simple tracer mixing (e.g., dust) |
---|
| 496 | do ig=1,ngrid |
---|
| 497 | zq(ig,1,iq)=zcq(ig,1) |
---|
| 498 | end do |
---|
| 499 | |
---|
| 500 | do ilay=2,nlay |
---|
| 501 | do ig=1,ngrid |
---|
| 502 | zq(ig,ilay,iq)=zcq(ig,ilay)+ |
---|
| 503 | $ zdq(ig,ilay)*zq(ig,ilay-1,iq) |
---|
| 504 | end do |
---|
| 505 | end do |
---|
| 506 | |
---|
| 507 | endif ! if (iq.ne.igcm_h2o_vap) |
---|
| 508 | |
---|
| 509 | ! Calculate temperature tendency including latent heat term |
---|
| 510 | ! and assuming an infinite source of water on the ground |
---|
| 511 | ! ------------------------------------------------------------------ |
---|
| 512 | |
---|
| 513 | if (water.and.(iq.eq.igcm_h2o_vap)) then |
---|
| 514 | |
---|
| 515 | ! compute evaporation efficiency |
---|
| 516 | do ig = 1, ngrid |
---|
| 517 | if(nint(rnat(ig)).eq.1)then |
---|
| 518 | dryness(ig)=pqsurf(ig,ivap)+pqsurf(ig,iice) |
---|
| 519 | dryness(ig)=MIN(1.,2*dryness(ig)/mx_eau_sol) |
---|
| 520 | dryness(ig)=MAX(0.,dryness(ig)) |
---|
| 521 | endif |
---|
| 522 | enddo |
---|
| 523 | |
---|
| 524 | do ig=1,ngrid |
---|
| 525 | |
---|
| 526 | ! Calculate the value of qsat at the surface (water) |
---|
| 527 | call watersat(ptsrf(ig),pplev(ig,1),qsat(ig)) |
---|
| 528 | call watersat(ptsrf(ig)-0.0001,pplev(ig,1),qsat_temp1) |
---|
| 529 | call watersat(ptsrf(ig)+0.0001,pplev(ig,1),qsat_temp2) |
---|
| 530 | dqsat(ig)=(qsat_temp2-qsat_temp1)/0.0002 |
---|
| 531 | ! calculate dQsat / dT by finite differences |
---|
| 532 | ! we cannot use the updated temperature value yet... |
---|
| 533 | |
---|
| 534 | enddo |
---|
| 535 | |
---|
| 536 | ! coefficients for q |
---|
| 537 | |
---|
| 538 | do ig=1,ngrid |
---|
| 539 | z1(ig)=1./(za(ig,nlay)+zb(ig,nlay)) |
---|
| 540 | zcq(ig,nlay)=za(ig,nlay)*zq(ig,nlay,iq)*z1(ig) |
---|
| 541 | zdq(ig,nlay)=zb(ig,nlay)*z1(ig) |
---|
| 542 | enddo |
---|
| 543 | |
---|
| 544 | do ilay=nlay-1,2,-1 |
---|
| 545 | do ig=1,ngrid |
---|
| 546 | z1(ig)=1./(za(ig,ilay)+zb(ig,ilay)+ |
---|
| 547 | $ zb(ig,ilay+1)*(1.-zdq(ig,ilay+1))) |
---|
| 548 | zcq(ig,ilay)=(za(ig,ilay)*zq(ig,ilay,iq)+ |
---|
| 549 | $ zb(ig,ilay+1)*zcq(ig,ilay+1))*z1(ig) |
---|
| 550 | zdq(ig,ilay)=zb(ig,ilay)*z1(ig) |
---|
| 551 | enddo |
---|
| 552 | enddo |
---|
| 553 | |
---|
| 554 | do ig=1,ngrid |
---|
| 555 | z1(ig)=1./(za(ig,1)+zb(ig,1)*dryness(ig)+ |
---|
| 556 | $ zb(ig,2)*(1.-zdq(ig,2))) |
---|
| 557 | zcq(ig,1)=(za(ig,1)*zq(ig,1,iq)+ |
---|
| 558 | $ zb(ig,2)*zcq(ig,2))*z1(ig) |
---|
| 559 | zdq(ig,1)=dryness(ig)*zb(ig,1)*z1(ig) |
---|
| 560 | enddo |
---|
| 561 | |
---|
| 562 | ! calculation of h0 and h1 |
---|
| 563 | do ig=1,ngrid |
---|
| 564 | zdq0(ig) = dqsat(ig) |
---|
| 565 | zcq0(ig) = qsat(ig)-dqsat(ig)*ptsrf(ig) |
---|
| 566 | |
---|
| 567 | z1(ig) = pcapcal(ig)*ptsrf(ig) +cpp*zb(ig,1)*zc(ig,1) |
---|
| 568 | & + zdplanck(ig)*ptsrf(ig) + pfluxsrf(ig)*ptimestep |
---|
| 569 | & + zb(ig,1)*dryness(ig)*RLVTT* |
---|
| 570 | & ((zdq(ig,1)-1.0)*zcq0(ig)+zcq(ig,1)) |
---|
| 571 | |
---|
| 572 | z2(ig) = pcapcal(ig) + cpp*zb(ig,1)*(1.-zd(ig,1)) |
---|
| 573 | & +zdplanck(ig) |
---|
| 574 | & +zb(ig,1)*dryness(ig)*RLVTT*zdq0(ig)* |
---|
| 575 | & (1.0-zdq(ig,1)) |
---|
| 576 | |
---|
| 577 | ztsrf2(ig) = z1(ig) / z2(ig) |
---|
| 578 | pdtsrf(ig) = (ztsrf2(ig) - ptsrf(ig))/ptimestep |
---|
| 579 | zh(ig,1) = zc(ig,1) + zd(ig,1)*ztsrf2(ig) |
---|
| 580 | enddo |
---|
| 581 | |
---|
| 582 | ! calculation of qs and q1 |
---|
| 583 | do ig=1,ngrid |
---|
| 584 | zq0(ig) = zcq0(ig)+zdq0(ig)*ztsrf2(ig) |
---|
| 585 | zq(ig,1,iq) = zcq(ig,1)+zdq(ig,1)*zq0(ig) |
---|
| 586 | enddo |
---|
| 587 | |
---|
| 588 | ! calculation of evaporation |
---|
| 589 | do ig=1,ngrid |
---|
| 590 | evap(ig)= zb(ig,1)*dryness(ig)*(zq(ig,1,ivap)-zq0(ig)) |
---|
| 591 | dqsdif_total(ig)=evap(ig) |
---|
| 592 | enddo |
---|
| 593 | |
---|
| 594 | ! recalculate temperature and q(vap) to top of atmosphere, starting from ground |
---|
| 595 | do ilay=2,nlay |
---|
| 596 | do ig=1,ngrid |
---|
| 597 | zq(ig,ilay,iq)=zcq(ig,ilay) |
---|
| 598 | & +zdq(ig,ilay)*zq(ig,ilay-1,iq) |
---|
| 599 | zh(ig,ilay)=zc(ig,ilay)+zd(ig,ilay)*zh(ig,ilay-1) |
---|
| 600 | end do |
---|
| 601 | end do |
---|
| 602 | |
---|
| 603 | do ig=1,ngrid |
---|
| 604 | |
---|
| 605 | ! -------------------------------------------------------------------------- |
---|
| 606 | ! On the ocean, if T > 0 C then the vapour tendency must replace the ice one |
---|
| 607 | ! The surface vapour tracer is actually liquid. To make things difficult. |
---|
| 608 | |
---|
| 609 | if (nint(rnat(ig)).eq.0) then ! unfrozen ocean |
---|
| 610 | |
---|
| 611 | pdqsdif(ig,ivap)=dqsdif_total(ig)/ptimestep |
---|
| 612 | pdqsdif(ig,iice)=0.0 |
---|
| 613 | |
---|
| 614 | |
---|
| 615 | elseif (nint(rnat(ig)).eq.1) then ! (continent) |
---|
| 616 | |
---|
| 617 | ! -------------------------------------------------------- |
---|
| 618 | ! Now check if we've taken too much water from the surface |
---|
| 619 | ! This can only occur on the continent |
---|
| 620 | |
---|
| 621 | ! If water is evaporating / subliming, we take it from ice before liquid |
---|
| 622 | ! -- is this valid?? |
---|
| 623 | if(dqsdif_total(ig).lt.0)then |
---|
| 624 | pdqsdif(ig,iice)=dqsdif_total(ig)/ptimestep |
---|
| 625 | pdqsdif(ig,iice)=max(-pqsurf(ig,iice)/ptimestep |
---|
| 626 | & ,pdqsdif(ig,iice)) |
---|
| 627 | endif |
---|
| 628 | ! sublimation only greater than qsurf(ice) |
---|
| 629 | ! ---------------------------------------- |
---|
| 630 | ! we just convert some liquid to vapour too |
---|
| 631 | ! if latent heats are the same, no big deal |
---|
| 632 | if (-dqsdif_total(ig).gt.pqsurf(ig,iice))then |
---|
| 633 | pdqsdif(ig,iice) = -pqsurf(ig,iice)/ptimestep ! removes all the ice! |
---|
| 634 | pdqsdif(ig,ivap) = dqsdif_total(ig)/ptimestep |
---|
| 635 | & - pdqsdif(ig,iice) ! take the remainder from the liquid instead |
---|
| 636 | pdqsdif(ig,ivap) = max(-pqsurf(ig,ivap)/ptimestep |
---|
| 637 | & ,pdqsdif(ig,ivap)) |
---|
| 638 | endif |
---|
| 639 | |
---|
| 640 | endif ! if (rnat.ne.1) |
---|
| 641 | |
---|
| 642 | ! If water vapour is condensing, we must decide whether it forms ice or liquid. |
---|
| 643 | if(dqsdif_total(ig).gt.0)then ! a bug was here! |
---|
| 644 | if(ztsrf2(ig).gt.T_h2O_ice_liq)then |
---|
| 645 | pdqsdif(ig,iice)=0.0 |
---|
| 646 | pdqsdif(ig,ivap)=dqsdif_total(ig)/ptimestep |
---|
| 647 | else |
---|
| 648 | pdqsdif(ig,iice)=dqsdif_total(ig)/ptimestep |
---|
| 649 | pdqsdif(ig,ivap)=0.0 |
---|
| 650 | endif |
---|
| 651 | endif |
---|
| 652 | |
---|
| 653 | end do ! of DO ig=1,ngrid |
---|
| 654 | endif ! if (water et iq=ivap) |
---|
| 655 | end do ! of do iq=1,nq |
---|
| 656 | endif ! traceur |
---|
| 657 | |
---|
| 658 | |
---|
| 659 | !----------------------------------------------------------------------- |
---|
| 660 | ! 8. Final calculation of the vertical diffusion tendencies |
---|
| 661 | ! ----------------------------------------------------------------- |
---|
| 662 | |
---|
| 663 | do ilev = 1, nlay |
---|
| 664 | do ig=1,ngrid |
---|
| 665 | pdudif(ig,ilev)=(zu(ig,ilev)- |
---|
| 666 | & (pu(ig,ilev)+pdufi(ig,ilev)*ptimestep))/ptimestep |
---|
| 667 | pdvdif(ig,ilev)=(zv(ig,ilev)- |
---|
| 668 | & (pv(ig,ilev)+pdvfi(ig,ilev)*ptimestep))/ptimestep |
---|
| 669 | hh = ph(ig,ilev)+pdhfi(ig,ilev)*ptimestep |
---|
| 670 | |
---|
| 671 | pdhdif(ig,ilev)=( zh(ig,ilev)- hh )/ptimestep |
---|
| 672 | enddo |
---|
| 673 | enddo |
---|
| 674 | |
---|
| 675 | DO ig=1,ngrid ! computing sensible heat flux (atm => surface) |
---|
| 676 | sensibFlux(ig)=cpp*zb(ig,1)/ptimestep*(zh(ig,1)-ztsrf2(ig)) |
---|
| 677 | ENDDO |
---|
| 678 | |
---|
| 679 | if (tracer) then |
---|
| 680 | do iq = 1, nq |
---|
| 681 | do ilev = 1, nlay |
---|
| 682 | do ig=1,ngrid |
---|
| 683 | pdqdif(ig,ilev,iq)=(zq(ig,ilev,iq)- |
---|
| 684 | & (pq(ig,ilev,iq)+pdqfi(ig,ilev,iq)*ptimestep))/ |
---|
| 685 | & ptimestep |
---|
| 686 | enddo |
---|
| 687 | enddo |
---|
| 688 | enddo |
---|
| 689 | |
---|
| 690 | if(water.and.forceWC)then ! force water conservation in model |
---|
| 691 | ! we calculate the difference and add it to the ground |
---|
| 692 | ! this is ugly and should be improved in the future |
---|
| 693 | do ig=1,ngrid |
---|
| 694 | Wtot=0.0 |
---|
| 695 | do ilay=1,nlay |
---|
| 696 | masse = (pplev(ig,ilay) - pplev(ig,ilay+1))/g |
---|
| 697 | ! Wtot=Wtot+masse*(zq(ig,ilay,iice)- |
---|
| 698 | ! & (pq(ig,ilay,iice)+pdqfi(ig,ilay,iice)*ptimestep)) |
---|
| 699 | Wtot=Wtot+masse*(zq(ig,ilay,ivap)- |
---|
| 700 | & (pq(ig,ilay,ivap)+pdqfi(ig,ilay,ivap)*ptimestep)) |
---|
| 701 | enddo |
---|
| 702 | Wdiff=Wtot/ptimestep+pdqsdif(ig,ivap)+pdqsdif(ig,iice) |
---|
| 703 | |
---|
| 704 | if(ztsrf2(ig).gt.T_h2O_ice_liq)then |
---|
| 705 | pdqsdif(ig,ivap)=pdqsdif(ig,ivap)-Wdiff |
---|
| 706 | else |
---|
| 707 | pdqsdif(ig,iice)=pdqsdif(ig,iice)-Wdiff |
---|
| 708 | endif |
---|
| 709 | enddo |
---|
| 710 | |
---|
| 711 | endif |
---|
| 712 | |
---|
| 713 | endif |
---|
| 714 | |
---|
| 715 | if(water)then |
---|
| 716 | call writediagfi(ngrid,'beta','Dryness coefficient',' ',2,dryness) |
---|
| 717 | endif |
---|
| 718 | |
---|
| 719 | ! if(lastcall)then |
---|
| 720 | ! if(ngrid.eq.1)then |
---|
| 721 | ! print*,'Saving k.out...' |
---|
| 722 | ! OPEN(12,file='k.out',form='formatted') |
---|
| 723 | ! DO ilay=1,nlay |
---|
| 724 | ! write(12,*) zkh(1,ilay), pplay(1,ilay) |
---|
| 725 | ! ENDDO |
---|
| 726 | ! CLOSE(12) |
---|
| 727 | ! endif |
---|
| 728 | ! endif |
---|
| 729 | |
---|
| 730 | |
---|
| 731 | return |
---|
| 732 | end |
---|