| 1 | SUBROUTINE mass_redistribution(ngrid,nlayer,nq,ptimestep, & |
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| 2 | rnat,pcapcal,pplay,pplev,pt,ptsrf,pq,pqs, & |
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| 3 | pu,pv,pdt,pdtsrf,pdq,pdu,pdv,pdmassmr, & |
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| 4 | pdtmr,pdtsrfmr,pdpsrfmr,pdumr,pdvmr,pdqmr,pdqsmr) |
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| 5 | |
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| 6 | USE watercommon_h, Only: Tsat_water,RLVTT |
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| 7 | use surfdat_h |
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| 8 | use radcommon_h, only: glat |
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| 9 | USE comgeomfi_h |
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| 10 | USE tracer_h |
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| 11 | USE planete_mod, only: bp |
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| 12 | |
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| 13 | IMPLICIT NONE |
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| 14 | !======================================================================= |
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| 15 | ! subject: |
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| 16 | ! -------- |
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| 17 | ! Mass and momentum fluxes through sigma levels as the surface pressure is modified are also taken into account |
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| 18 | ! |
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| 19 | ! author: Jeremy Leconte 2012 (from F.Forget 1998) |
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| 20 | ! ------ |
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| 21 | ! |
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| 22 | ! input: |
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| 23 | ! ----- |
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| 24 | ! ngrid nombre de points de verticales |
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| 25 | ! (toutes les boucles de la physique sont au |
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| 26 | ! moins vectorisees sur ngrid) |
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| 27 | ! nlayer nombre de couches |
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| 28 | ! pplay(ngrid,nlayer) Pressure levels |
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| 29 | ! pplev(ngrid,nlayer+1) Pressure levels |
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| 30 | ! nq Number of tracers |
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| 31 | ! |
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| 32 | ! pt(ngrid,nlayer) temperature (en K) |
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| 33 | ! pq(ngrid,nlayer,nq) tracer specific concentration (kg/kg of air) |
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| 34 | ! pu,pv (ngrid,nlayer) wind velocity (m/s) |
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| 35 | ! |
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| 36 | ! |
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| 37 | ! pdX physical tendency of X before mass redistribution |
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| 38 | ! |
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| 39 | ! pdmassmr air Mass added to the atmosphere in each layer (kg/m2/s) |
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| 40 | ! |
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| 41 | ! output: |
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| 42 | ! ------- |
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| 43 | ! |
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| 44 | ! pdXmr(ngrid) physical tendency of X after mass redistribution |
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| 45 | ! |
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| 46 | ! |
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| 47 | ! |
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| 48 | !======================================================================= |
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| 49 | ! |
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| 50 | ! 0. Declarations : |
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| 51 | ! ------------------ |
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| 52 | ! |
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| 53 | !#include "dimensions.h" |
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| 54 | !#include "dimphys.h" |
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| 55 | #include "comcstfi.h" |
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| 56 | !#include "comvert.h" |
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| 57 | !#include "paramet.h" |
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| 58 | #include "callkeys.h" |
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| 59 | |
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| 60 | !----------------------------------------------------------------------- |
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| 61 | ! Arguments : |
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| 62 | ! --------- |
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| 63 | INTEGER ngrid, nlayer, nq |
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| 64 | REAL ptimestep |
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| 65 | REAL pcapcal(ngrid) |
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| 66 | INTEGER rnat(ngrid) |
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| 67 | REAL pplay(ngrid,nlayer),pplev(ngrid,nlayer+1) |
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| 68 | REAL pt(ngrid,nlayer),pdt(ngrid,nlayer) |
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| 69 | REAL ptsrf(ngrid),pdtsrf(ngrid) |
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| 70 | REAL pdtmr(ngrid,nlayer) |
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| 71 | REAL pu(ngrid,nlayer) , pv(ngrid,nlayer) |
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| 72 | REAL pdu(ngrid,nlayer) , pdv(ngrid,nlayer) |
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| 73 | REAL pdmassmr(ngrid,nlayer) |
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| 74 | REAL pdumr(ngrid,nlayer) , pdvmr(ngrid,nlayer) |
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| 75 | REAL pq(ngrid,nlayer,nq),pdq(ngrid,nlayer,nq) |
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| 76 | REAL pqs(ngrid,nq) |
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| 77 | REAL pdqmr(ngrid,nlayer,nq),pdqsmr(ngrid,nq) |
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| 78 | REAL pdpsrfmr(ngrid),pdtsrfmr(ngrid) |
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| 79 | ! |
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| 80 | ! Local variables : |
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| 81 | ! ----------------- |
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| 82 | |
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| 83 | ! Boiling/sublimation |
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| 84 | REAL Tsat(ngrid),zmassboil(ngrid) |
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| 85 | |
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| 86 | ! vertical reorganization of sigma levels |
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| 87 | REAL zzu(nlayer),zzv(nlayer) |
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| 88 | REAL zzq(nlayer,nq),zzt(nlayer) |
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| 89 | ! Dummy variables |
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| 90 | INTEGER n,l,ig,iq |
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| 91 | REAL zdtsig(ngrid,nlayer) |
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| 92 | REAL zmass(ngrid,nlayer),zzmass(nlayer),w(nlayer+1) |
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| 93 | REAL zdmass_sum(ngrid,nlayer+1) |
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| 94 | REAL zmflux(nlayer+1) |
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| 95 | REAL zq1(nlayer) |
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| 96 | REAL ztsrf(ngrid) |
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| 97 | REAL ztm(nlayer+1) |
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| 98 | REAL zum(nlayer+1) , zvm(nlayer+1) |
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| 99 | REAL zqm(nlayer+1,nq),zqm1(nlayer+1) |
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| 100 | REAL sigma(nlayer+1) |
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| 101 | |
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| 102 | ! local saved variables |
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| 103 | LOGICAL, SAVE :: firstcall=.true. |
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| 104 | !$OMP THREADPRIVATE(firstcall) |
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| 105 | |
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| 106 | !---------------------------------------------------------------------- |
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| 107 | |
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| 108 | ! Initialisation |
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| 109 | ! -------------- |
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| 110 | ! |
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| 111 | IF (firstcall) THEN |
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| 112 | firstcall=.false. |
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| 113 | ENDIF |
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| 114 | ! |
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| 115 | !====================================================================== |
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| 116 | ! Calcul of h2o condensation |
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| 117 | ! ============================================================ |
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| 118 | ! |
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| 119 | ! Used variable : |
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| 120 | ! pdmassmr : air Mass added to the atmosphere in each layer per unit time (kg/m2/s) |
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| 121 | ! zdmass_sum(ngrid,l) : total air mass added to the atm above layer l per unit time (kg/m2/s) |
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| 122 | ! |
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| 123 | ! |
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| 124 | ! Surface tracer Tendencies set to 0 |
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| 125 | ! ------------------------------------- |
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| 126 | pdqsmr(1:ngrid,1:nq)=0. |
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| 127 | |
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| 128 | ztsrf(1:ngrid) = ptsrf(1:ngrid) + pdtsrf(1:ngrid)*ptimestep |
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| 129 | |
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| 130 | |
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| 131 | DO ig=1,ngrid |
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| 132 | zdmass_sum(ig,nlayer+1)=0. |
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| 133 | DO l = nlayer, 1, -1 |
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| 134 | zmass(ig,l) = (pplev(ig,l)-pplev(ig,l+1))/glat(ig) |
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| 135 | zdmass_sum(ig,l)= zdmass_sum(ig,l+1)+pdmassmr(ig,l) |
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| 136 | END DO |
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| 137 | END DO |
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| 138 | |
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| 139 | |
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| 140 | if (water) then |
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| 141 | do ig=1,ngrid |
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| 142 | call Tsat_water(pplev(ig,1)+zdmass_sum(ig,1)*g*ptimestep,Tsat(ig)) |
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| 143 | enddo |
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| 144 | call writediagfi(ngrid,'Tsat','saturation temperature at surface','',2,Tsat) |
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| 145 | |
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| 146 | do ig=1,ngrid |
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| 147 | if (ztsrf(ig).gt.Tsat(ig)) then |
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| 148 | zmassboil(ig)=(ptsrf(ig)-Tsat(ig))*pcapcal(ig)/RLVTT/ptimestep |
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| 149 | if ((zmassboil(ig)*ptimestep.gt.pqs(ig,igcm_h2o_vap)).and.(rnat(ig).eq.1)) then |
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| 150 | zmassboil(ig)=pqs(ig,igcm_h2o_vap)/ptimestep |
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| 151 | endif |
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| 152 | zmassboil(ig)=zmassboil(ig)*0.0 !momentary, should be 1. JL12 |
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| 153 | pdqsmr(ig,igcm_h2o_vap)=-zmassboil(ig) |
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| 154 | pdtsrfmr(ig)=-zmassboil(ig)*RLVTT/pcapcal(ig) |
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| 155 | ztsrf(ig)=ptsrf(ig)+pdtsrfmr(ig)*ptimestep |
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| 156 | else |
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| 157 | zmassboil(ig)=0. |
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| 158 | pdtsrfmr(ig)=0. |
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| 159 | endif |
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| 160 | enddo |
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| 161 | endif |
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| 162 | |
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| 163 | ! ************************* |
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| 164 | ! UPDATE SURFACE |
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| 165 | ! ************************* |
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| 166 | ! Changing pressure at the surface: |
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| 167 | ! """""""""""""""""""""""""""""""""""" |
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| 168 | |
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| 169 | pdpsrfmr(1:ngrid) = (zdmass_sum(1:ngrid,1)+zmassboil(1:ngrid))*g |
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| 170 | |
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| 171 | do ig = 1, ngrid |
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| 172 | IF(ABS(pdpsrfmr(ig)*ptimestep).GT.pplev(ig,1)) THEN |
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| 173 | PRINT*,'STOP in condens' |
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| 174 | PRINT*,'condensing more than total mass' |
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| 175 | PRINT*,'Grid point ',ig |
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| 176 | PRINT*,'Ps = ',pplev(ig,1) |
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| 177 | PRINT*,'d Ps = ',pdpsrfmr(ig)*ptimestep |
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| 178 | STOP |
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| 179 | ENDIF |
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| 180 | enddo ! of DO ig=1,ngrid |
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| 181 | |
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| 182 | |
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| 183 | ! *************************************************************** |
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| 184 | ! Correction to account for redistribution between sigma or hybrid |
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| 185 | ! layers when changing surface pressure |
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| 186 | ! zzx quantities have dimension (nlayer) to speed up calculation |
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| 187 | ! ************************************************************* |
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| 188 | |
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| 189 | DO ig=1,ngrid |
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| 190 | zzt(1:nlayer) = pt(ig,1:nlayer) + pdt(ig,1:nlayer) * ptimestep |
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| 191 | zzu(1:nlayer) = pu(ig,1:nlayer) + pdu(ig,1:nlayer) * ptimestep |
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| 192 | zzv(1:nlayer) = pv(ig,1:nlayer) + pdv(ig,1:nlayer) * ptimestep |
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| 193 | zzq(1:nlayer,1:nq)=pq(ig,1:nlayer,1:nq)+pdq(ig,1:nlayer,1:nq)*ptimestep ! must add the water that has fallen??? |
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| 194 | |
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| 195 | ! Mass fluxes of air through the sigma levels (kg.m-2.s-1) (>0 when up) |
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| 196 | ! """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" |
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| 197 | zmflux(1) = zmassboil(ig) |
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| 198 | sigma(1)=1 |
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| 199 | DO l=1,nlayer |
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| 200 | ! Ehouarn: shouldn't we rather compute sigma levels than use bp()? |
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| 201 | ! sigma(l+1)=pplev(ig,l+1)/pplev(ig,1) |
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| 202 | ! zmflux(l+1) = zmflux(l) + pdmassmr(ig,l) - & |
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| 203 | ! (sigma(l)-sigma(l+1))*(zdmass_sum(ig,1)+zmflux(1)) |
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| 204 | ! if (abs(zmflux(l+1)).lt.1E-13.OR.sigma(l+1).eq.0.) zmflux(l+1)=0. |
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| 205 | ! Ehouarn: but for now leave things as before |
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| 206 | zmflux(l+1) = zmflux(l) + pdmassmr(ig,l) - (bp(l)-bp(l+1))*(zdmass_sum(ig,1)+zmflux(1)) |
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| 207 | ! zmflux set to 0 if very low to avoid: top layer is disappearing in v1ld |
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| 208 | if (abs(zmflux(l+1)).lt.1E-13.OR.bp(l+1).eq.0.) zmflux(l+1)=0. |
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| 209 | END DO |
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| 210 | |
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| 211 | ! Mass of each layer |
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| 212 | ! ------------------ |
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| 213 | zzmass(1:nlayer)=zmass(ig,1:nlayer)*(1.+pdpsrfmr(ig)*ptimestep/pplev(ig,1)) |
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| 214 | |
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| 215 | |
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| 216 | ! Corresponding fluxes for T,U,V,Q |
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| 217 | ! """""""""""""""""""""""""""""""" |
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| 218 | |
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| 219 | ! averaging operator for TRANSPORT |
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| 220 | ! """""""""""""""""""""""""""""""" |
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| 221 | ! Value transfert at the surface interface when condensation |
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| 222 | ! sublimation: |
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| 223 | ztm(1) = ztsrf(ig) |
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| 224 | zum(1) = 0. |
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| 225 | zvm(1) = 0. |
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| 226 | zqm(1,1:nq)=0. ! most tracer do not condense ! |
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| 227 | if (water) zqm(1,igcm_h2o_vap)=1. ! flux is 100% h2o at surface |
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| 228 | |
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| 229 | ! Van Leer scheme: |
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| 230 | w(1:nlayer+1)=-zmflux(1:nlayer+1)*ptimestep |
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| 231 | call vl1d(zzt,2.,zzmass,w,ztm) |
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| 232 | call vl1d(zzu ,2.,zzmass,w,zum) |
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| 233 | call vl1d(zzv ,2.,zzmass,w,zvm) |
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| 234 | do iq=1,nq |
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| 235 | zq1(1:nlayer)=zzq(1:nlayer,iq) |
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| 236 | zqm1(1)=zqm(1,iq) |
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| 237 | ! print*,iq |
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| 238 | ! print*,zq1 |
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| 239 | call vl1d(zq1,2.,zzmass,w,zqm1) |
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| 240 | do l=2,nlayer |
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| 241 | zzq(l,iq)=zq1(l) |
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| 242 | zqm(l,iq)=zqm1(l) |
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| 243 | enddo |
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| 244 | enddo |
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| 245 | |
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| 246 | ! Surface condensation affects low winds |
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| 247 | if (zmflux(1).lt.0) then |
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| 248 | zum(1)= zzu(1) * (w(1)/zzmass(1)) |
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| 249 | zvm(1)= zzv(1) * (w(1)/zzmass(1)) |
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| 250 | if (w(1).gt.zzmass(1)) then ! ensure numerical stability |
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| 251 | zum(1)= (zzu(1)-zum(2))*zzmass(1)/w(1) + zum(2) |
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| 252 | zvm(1)= (zzv(1)-zvm(2))*zzmass(1)/w(1) + zvm(2) |
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| 253 | end if |
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| 254 | end if |
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| 255 | |
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| 256 | ztm(nlayer+1)= zzt(nlayer) ! should not be used, but... |
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| 257 | zum(nlayer+1)= zzu(nlayer) ! should not be used, but... |
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| 258 | zvm(nlayer+1)= zzv(nlayer) ! should not be used, but... |
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| 259 | zqm(nlayer+1,1:nq)= zzq(nlayer,1:nq) |
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| 260 | |
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| 261 | ! Tendencies on T, U, V, Q |
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| 262 | ! """""""""""""""""""""""" |
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| 263 | DO l=1,nlayer |
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| 264 | |
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| 265 | ! Tendencies on T |
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| 266 | pdtmr(ig,l) = (1/zzmass(l)) * & |
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| 267 | (zmflux(l)*(ztm(l) - zzt(l))-zmflux(l+1)*(ztm(l+1)-zzt(l))) |
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| 268 | !JL12 the last term in Newcondens has been set to zero because we are only dealing with redistribution here |
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| 269 | |
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| 270 | ! Tendencies on U |
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| 271 | pdumr(ig,l) = (1/zzmass(l)) *( zmflux(l)*(zum(l) - zzu(l)) - zmflux(l+1)*(zum(l+1) - zzu(l)) ) |
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| 272 | |
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| 273 | ! Tendencies on V |
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| 274 | pdvmr(ig,l) = (1/zzmass(l)) *( zmflux(l)*(zvm(l) - zzv(l)) - zmflux(l+1)*(zvm(l+1) - zzv(l)) ) |
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| 275 | |
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| 276 | END DO |
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| 277 | |
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| 278 | ! Tendencies on Q |
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| 279 | do iq=1,nq |
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| 280 | DO l=1,nlayer |
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| 281 | pdqmr(ig,l,iq)= (1/zzmass(l)) * & |
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| 282 | (zmflux(l)*(zqm(l,iq)-zzq(l,iq))- zmflux(l+1)*(zqm(l+1,iq)-zzq(l,iq)) - pdmassmr(ig,l)*zzq(l,iq)) |
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| 283 | END DO |
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| 284 | enddo |
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| 285 | |
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| 286 | END DO ! loop on ig |
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| 287 | |
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| 288 | return |
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| 289 | end |
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| 290 | |
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| 291 | |
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| 292 | |
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| 293 | ! ***************************************************************** |
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| 294 | SUBROUTINE vl1d(q,pente_max,zzmass,w,qm) |
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| 295 | ! |
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| 296 | ! |
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| 297 | ! Operateur de moyenne inter-couche pour calcul de transport type |
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| 298 | ! Van-Leer " pseudo amont " dans la verticale |
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| 299 | ! q,w sont des arguments d'entree pour le s-pg .... |
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| 300 | ! masse : masse de la couche Dp/g |
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| 301 | ! w : masse d'atm ``transferee'' a chaque pas de temps (kg.m-2) |
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| 302 | ! pente_max = 2 conseillee |
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| 303 | ! |
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| 304 | ! |
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| 305 | ! -------------------------------------------------------------------- |
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| 306 | IMPLICIT NONE |
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| 307 | |
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| 308 | #include "dimensions.h" |
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| 309 | |
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| 310 | ! Arguments: |
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| 311 | ! ---------- |
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| 312 | real zzmass(llm),pente_max |
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| 313 | REAL q(llm),qm(llm+1) |
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| 314 | REAL w(llm+1) |
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| 315 | ! |
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| 316 | ! Local |
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| 317 | ! --------- |
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| 318 | ! |
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| 319 | INTEGER l |
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| 320 | ! |
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| 321 | real dzq(llm),dzqw(llm),adzqw(llm),dzqmax |
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| 322 | real sigw, Mtot, MQtot |
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| 323 | integer m |
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| 324 | ! integer ismax,ismin |
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| 325 | |
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| 326 | |
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| 327 | ! On oriente tout dans le sens de la pression |
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| 328 | ! W > 0 WHEN DOWN !!!!!!!!!!!!! |
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| 329 | |
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| 330 | do l=2,llm |
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| 331 | dzqw(l)=q(l-1)-q(l) |
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| 332 | adzqw(l)=abs(dzqw(l)) |
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| 333 | enddo |
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| 334 | |
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| 335 | do l=2,llm-1 |
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| 336 | if(dzqw(l)*dzqw(l+1).gt.0.) then |
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| 337 | dzq(l)=0.5*(dzqw(l)+dzqw(l+1)) |
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| 338 | else |
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| 339 | dzq(l)=0. |
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| 340 | endif |
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| 341 | dzqmax=pente_max*min(adzqw(l),adzqw(l+1)) |
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| 342 | dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l)) |
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| 343 | enddo |
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| 344 | |
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| 345 | dzq(1)=0. |
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| 346 | dzq(llm)=0. |
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| 347 | |
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| 348 | do l = 1,llm-1 |
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| 349 | |
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| 350 | ! Regular scheme (transfered mass < layer mass) |
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| 351 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 352 | if(w(l+1).gt.0. .and. w(l+1).le.zzmass(l+1)) then |
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| 353 | sigw=w(l+1)/zzmass(l+1) |
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| 354 | qm(l+1)=(q(l+1)+0.5*(1.-sigw)*dzq(l+1)) |
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| 355 | else if(w(l+1).le.0. .and. -w(l+1).le.zzmass(l)) then |
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| 356 | sigw=w(l+1)/zzmass(l) |
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| 357 | qm(l+1)=(q(l)-0.5*(1.+sigw)*dzq(l)) |
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| 358 | |
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| 359 | ! Extended scheme (transfered mass > layer mass) |
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| 360 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 361 | else if(w(l+1).gt.0.) then |
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| 362 | m=l+1 |
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| 363 | Mtot = zzmass(m) |
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| 364 | MQtot = zzmass(m)*q(m) |
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| 365 | do while ((m.lt.llm).and.(w(l+1).gt.(Mtot+zzmass(m+1)))) |
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| 366 | m=m+1 |
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| 367 | Mtot = Mtot + zzmass(m) |
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| 368 | MQtot = MQtot + zzmass(m)*q(m) |
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| 369 | end do |
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| 370 | if (m.lt.llm) then |
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| 371 | sigw=(w(l+1)-Mtot)/zzmass(m+1) |
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| 372 | qm(l+1)= (1/w(l+1))*(MQtot + (w(l+1)-Mtot)*(q(m+1)+0.5*(1.-sigw)*dzq(m+1)) ) |
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| 373 | else |
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| 374 | ! w(l+1) = Mtot |
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| 375 | ! qm(l+1) = Mqtot / Mtot |
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| 376 | write(*,*) 'top layer is disappearing !',l,Mtot,w(l+1),qm(l+1) |
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| 377 | print*,zzmass |
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| 378 | print*,w |
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| 379 | print*,q |
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| 380 | print*,qm |
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| 381 | stop |
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| 382 | end if |
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| 383 | else ! if(w(l+1).lt.0) |
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| 384 | m = l-1 |
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| 385 | Mtot = zzmass(m+1) |
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| 386 | MQtot = zzmass(m+1)*q(m+1) |
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| 387 | if (m.gt.0) then ! because some compilers will have problems |
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| 388 | ! evaluating zzmass(0) |
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| 389 | do while ((m.gt.0).and.(-w(l+1).gt.(Mtot+zzmass(m)))) |
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| 390 | m=m-1 |
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| 391 | Mtot = Mtot + zzmass(m+1) |
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| 392 | MQtot = MQtot + zzmass(m+1)*q(m+1) |
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| 393 | if (m.eq.0) exit |
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| 394 | end do |
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| 395 | endif |
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| 396 | if (m.gt.0) then |
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| 397 | sigw=(w(l+1)+Mtot)/zzmass(m) |
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| 398 | qm(l+1)= (-1/w(l+1))*(MQtot + (-w(l+1)-Mtot)*(q(m)-0.5*(1.+sigw)*dzq(m)) ) |
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| 399 | else |
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| 400 | qm(l+1)= (-1/w(l+1))*(MQtot + (-w(l+1)-Mtot)*qm(1)) |
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| 401 | end if |
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| 402 | end if |
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| 403 | enddo |
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| 404 | |
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| 405 | ! boundary conditions (not used in newcondens !!) |
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| 406 | ! qm(llm+1)=0. |
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| 407 | ! if(w(1).gt.0.) then |
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| 408 | ! qm(1)=q(1) |
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| 409 | ! else |
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| 410 | ! qm(1)=0. |
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| 411 | ! end if |
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| 412 | |
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| 413 | return |
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| 414 | end |
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