| 1 | SUBROUTINE largescale2(dtime, paprs, pplay, t, q, |
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| 2 | s d_t, d_q, d_ql, rneb) |
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| 3 | |
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| 4 | use watercommon_h, only : RLVTT |
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| 5 | |
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| 6 | IMPLICIT none |
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| 7 | |
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| 8 | !================================================================== |
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| 9 | ! |
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| 10 | ! Purpose |
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| 11 | ! ------- |
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| 12 | ! Calculates large-scale (stratiform) H2O condensation. |
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| 13 | ! |
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| 14 | ! Authors |
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| 15 | ! ------- |
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| 16 | ! Adapted from the LMDTERRE code by R. Wordsworth (2009) |
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| 17 | ! Original author Z. X. Li (1993) |
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| 18 | ! |
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| 19 | !================================================================== |
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| 20 | |
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| 21 | #include "dimensions.h" |
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| 22 | #include "dimphys.h" |
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| 23 | #include "comcstfi.h" |
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| 24 | |
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| 25 | #include "fisice.h" |
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| 26 | #include "callkeys.h" |
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| 27 | #include "tracer.h" |
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| 28 | |
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| 29 | |
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| 30 | ! Arguments |
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| 31 | REAL dtime ! intervalle du temps (s) |
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| 32 | REAL paprs(ngridmx,nlayermx+1) ! pression a inter-couche |
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| 33 | REAL pplay(ngridmx,nlayermx) ! pression au milieu de couche |
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| 34 | REAL t(ngridmx,nlayermx) ! temperature (K) |
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| 35 | REAL q(ngridmx,nlayermx) ! humidite specifique (kg/kg) |
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| 36 | REAL d_t(ngridmx,nlayermx) ! incrementation de la temperature (K) |
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| 37 | REAL d_q(ngridmx,nlayermx) ! incrementation de la vapeur d'eau |
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| 38 | REAL d_ql(ngridmx,nlayermx) ! incrementation de l'eau liquide |
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| 39 | REAL rneb(ngridmx,nlayermx) ! fraction nuageuse |
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| 40 | |
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| 41 | ! Options du programme |
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| 42 | REAL ratqs ! determine largeur de la distribution de vapeur |
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| 43 | PARAMETER (ratqs=0.2) |
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| 44 | |
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| 45 | ! Variables locales |
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| 46 | REAL CBRT |
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| 47 | EXTERNAL CBRT |
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| 48 | INTEGER i, k |
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| 49 | REAL zt(ngridmx), zq(ngridmx) |
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| 50 | REAL zcond(ngridmx) |
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| 51 | REAL zdelq(ngridmx) |
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| 52 | REAL zqs(ngridmx), zdqs(ngridmx) |
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| 53 | |
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| 54 | REAL zcor(ngridmx), zdelta(ngridmx), zcvm5(ngridmx) |
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| 55 | REAL zx_q(ngridmx) |
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| 56 | |
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| 57 | ! Initialisation des sorties |
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| 58 | DO k = 1, nlayermx |
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| 59 | DO i = 1, ngridmx |
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| 60 | d_t(i,k)=0. |
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| 61 | d_q(i,k)=0. |
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| 62 | d_ql(i,k)=0. |
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| 63 | rneb(i,k) = 0.0 |
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| 64 | ENDDO |
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| 65 | ENDDO |
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| 66 | |
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| 67 | ! Boucle verticale (du haut vers le bas) |
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| 68 | DO 9999 k = nlayermx, 1, -1 |
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| 69 | |
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| 70 | DO i = 1, ngridmx |
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| 71 | zt(i)=t(i,k) |
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| 72 | zq(i)=q(i,k) |
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| 73 | ENDDO |
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| 74 | |
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| 75 | ! Calculer la vapeur d'eau saturante et |
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| 76 | ! determiner la condensation partielle |
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| 77 | DO i = 1, ngridmx |
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| 78 | |
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| 79 | call watersat_2(zt(i),pplay(i,k),zqs(i)) |
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| 80 | call watersat_grad(zt(i),zqs(i),zdqs(i)) |
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| 81 | |
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| 82 | !IF (zt(i).LT.t_coup) THEN |
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| 83 | ! zqs(i) = qsats(zt(i))/pplay(i,k) |
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| 84 | ! zdqs(i) = dqsats(zt(i),zqs(i)) |
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| 85 | !ELSE |
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| 86 | ! zqs(i) = qsatl(zt(i))/pplay(i,k) |
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| 87 | ! zdqs(i) = dqsatl(zt(i),zqs(i)) |
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| 88 | !ENDIF |
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| 89 | |
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| 90 | zdelq(i) = ratqs * zq(i) |
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| 91 | rneb(i,k) = (zq(i)+zdelq(i)-zqs(i)) / (2.0*zdelq(i)) |
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| 92 | zcond(i) = 0.0 |
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| 93 | zx_q(i) = (zq(i)+zdelq(i)+zqs(i))/2.0 |
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| 94 | if (rneb(i,k) .LE. 0.0) zx_q(i) = 0.0 |
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| 95 | if (rneb(i,k) .GE. 1.0) zx_q(i) = zq(i) |
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| 96 | rneb(i,k) = MAX(0.0,MIN(1.0,rneb(i,k))) |
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| 97 | zcond(i) = MAX(0.0,zx_q(i)-zqs(i))*rneb(i,k)/(1.+zdqs(i)) |
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| 98 | zcond(i) = zcond(i)/dtime ! added by RDW |
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| 99 | |
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| 100 | ! for varying particle size in rad tran and (possibly) sedimentation |
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| 101 | ! to be dealt with in next version... |
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| 102 | |
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| 103 | ! rice(i,k) = CBRT( 3*zcond(i)/( 4*Nmix_h2o*pi*rho_ice)) |
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| 104 | ! rice(i,k) = max(rice(i,k),1.e-16) |
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| 105 | |
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| 106 | ENDDO |
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| 107 | |
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| 108 | ! Tendances de t et q |
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| 109 | DO i = 1, ngridmx |
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| 110 | d_q(i,k) = - zcond(i) |
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| 111 | d_ql(i,k) = zcond(i) |
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| 112 | d_t(i,k) = zcond(i)*RLVTT/cpp |
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| 113 | ENDDO |
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| 114 | |
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| 115 | 9999 CONTINUE |
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| 116 | |
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| 117 | !print*,'rice=',rice |
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| 118 | !print*,'rneb=',rneb |
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| 119 | |
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| 120 | RETURN |
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| 121 | END |
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