| [5099] | 1 | |
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| [3817] | 2 | MODULE screenp_mod |
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| [5099] | 3 | |
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| [3817] | 4 | ! This module contains some procedures for calculation of the first |
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| 5 | ! guess of temperature, specific humidity and wind at a reference level |
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| 6 | ! coefficients for turbulent diffusion at surface |
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| [5099] | 7 | |
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| [3817] | 8 | IMPLICIT NONE |
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| 9 | |
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| 10 | CONTAINS |
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| [5099] | 11 | |
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| [3817] | 12 | !**************************************************************************************** |
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| [5099] | 13 | |
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| [3817] | 14 | !r original routine |
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| [5099] | 15 | |
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| [3817] | 16 | SUBROUTINE screenp(klon, knon, nsrf, & |
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| [5087] | 17 | speed, tair, qair, & |
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| 18 | ts, qsurf, rugos, lmon, & |
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| 19 | ustar, testar, qstar, zref, & |
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| 20 | delu, delte, delq) |
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| [5134] | 21 | IMPLICIT NONE |
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| [3817] | 22 | !------------------------------------------------------------------------- |
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| [5099] | 23 | |
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| [3817] | 24 | ! Objet : calcul "predicteur" des anomalies du vent, de la temperature |
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| 25 | ! potentielle et de l'humidite relative au niveau de reference zref et |
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| 26 | ! par rapport au 1er niveau (pour u) ou a la surface (pour theta et q) |
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| 27 | ! a partir des relations de Dyer-Businger. |
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| [5099] | 28 | |
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| [3817] | 29 | ! Reference : Hess, Colman et McAvaney (1995) |
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| [5099] | 30 | |
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| [3817] | 31 | ! I. Musat, 01.07.2002 |
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| 32 | !------------------------------------------------------------------------- |
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| [5099] | 33 | |
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| [3817] | 34 | ! klon----input-I- dimension de la grille physique (= nb_pts_latitude X nb_pts_longitude) |
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| 35 | ! knon----input-I- nombre de points pour un type de surface |
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| 36 | ! nsrf----input-I- indice pour le type de surface; voir indice_sol_mod.F90 |
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| 37 | ! speed---input-R- module du vent au 1er niveau du modele |
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| 38 | ! tair----input-R- temperature de l'air au 1er niveau du modele |
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| 39 | ! qair----input-R- humidite relative au 1er niveau du modele |
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| 40 | ! ts------input-R- temperature de l'air a la surface |
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| 41 | ! qsurf---input-R- humidite relative a la surface |
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| 42 | ! rugos---input-R- rugosite |
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| 43 | ! lmon----input-R- longueur de Monin-Obukov |
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| 44 | ! ustar---input-R- facteur d'echelle pour le vent |
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| 45 | ! testar--input-R- facteur d'echelle pour la temperature potentielle |
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| 46 | ! qstar---input-R- facteur d'echelle pour l'humidite relative |
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| 47 | ! zref----input-R- altitude de reference |
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| [5099] | 48 | |
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| [3817] | 49 | ! delu----input-R- anomalie du vent par rapport au 1er niveau |
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| 50 | ! delte---input-R- anomalie de la temperature potentielle par rapport a la surface |
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| 51 | ! delq----input-R- anomalie de l'humidite relative par rapport a la surface |
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| [5099] | 52 | |
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| [5117] | 53 | INTEGER, INTENT(IN) :: klon, knon, nsrf |
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| 54 | REAL, DIMENSION(klon), INTENT(IN) :: speed, tair, qair |
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| 55 | REAL, DIMENSION(klon), INTENT(IN) :: ts, qsurf, rugos |
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| 56 | DOUBLE PRECISION, DIMENSION(klon), INTENT(IN) :: lmon |
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| 57 | REAL, DIMENSION(klon), INTENT(IN) :: ustar, testar, qstar |
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| 58 | REAL, INTENT(IN) :: zref |
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| [5099] | 59 | |
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| [5117] | 60 | REAL, DIMENSION(klon), INTENT(OUT) :: delu, delte, delq |
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| [5099] | 61 | |
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| [3817] | 62 | !------------------------------------------------------------------------- |
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| 63 | ! Variables locales et constantes : |
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| 64 | REAL, PARAMETER :: RKAR=0.40 |
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| 65 | INTEGER :: i |
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| 66 | REAL :: xtmp, xtmp0 |
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| 67 | !------------------------------------------------------------------------- |
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| 68 | DO i = 1, knon |
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| [5099] | 69 | |
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| [5082] | 70 | IF (lmon(i)>=0.) THEN |
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| [5099] | 71 | |
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| [3817] | 72 | ! STABLE CASE |
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| [5099] | 73 | |
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| [5082] | 74 | IF (speed(i)>1.5.AND.lmon(i)<=1.0 & |
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| [5087] | 75 | .AND. rugos(i)<=1.0) THEN |
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| [3817] | 76 | delu(i) = (ustar(i)/RKAR)* & |
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| 77 | (log(zref/(rugos(i))+1.) + & |
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| 78 | min(5.d0, 5.0 *(zref - rugos(i))/lmon(i))) |
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| 79 | delte(i) = (testar(i)/RKAR)* & |
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| 80 | (log(zref/(rugos(i))+1.) + & |
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| 81 | min(5.d0, 5.0 * (zref - rugos(i))/lmon(i))) |
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| 82 | delq(i) = (qstar(i)/RKAR)* & |
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| 83 | (log(zref/(rugos(i))+1.) + & |
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| 84 | min(5.d0, 5.0 * (zref - rugos(i))/lmon(i))) |
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| 85 | ELSE |
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| 86 | delu(i) = 0.1 * speed(i) |
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| 87 | delte(i) = 0.1 * (tair(i) - ts(i) ) |
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| 88 | delq(i) = 0.1 * (max(qair(i),0.0) - max(qsurf(i),0.0)) |
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| 89 | ENDIF |
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| 90 | ELSE |
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| [5099] | 91 | |
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| [3817] | 92 | ! UNSTABLE CASE |
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| [5099] | 93 | |
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| [5082] | 94 | IF (speed(i)>5.0.AND.abs(lmon(i))<=50.0) THEN |
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| [3817] | 95 | xtmp = (1. - 16. * (zref/lmon(i)))**(1./4.) |
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| 96 | xtmp0 = (1. - 16. * (rugos(i)/lmon(i)))**(1./4.) |
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| 97 | delu(i) = (ustar(i)/RKAR)* & |
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| 98 | (log(zref/(rugos(i))+1.) & |
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| 99 | - 2.*log(0.5*(1. + xtmp)) & |
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| 100 | + 2.*log(0.5*(1. + xtmp0)) & |
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| 101 | - log(0.5*(1. + xtmp*xtmp)) & |
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| 102 | + log(0.5*(1. + xtmp0*xtmp0)) & |
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| 103 | + 2.*atan(xtmp) - 2.*atan(xtmp0)) |
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| 104 | delte(i) = (testar(i)/RKAR)* & |
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| 105 | (log(zref/(rugos(i))+1.) & |
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| 106 | - 2.0 * log(0.5*(1. + xtmp*xtmp)) & |
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| 107 | + 2.0 * log(0.5*(1. + xtmp0*xtmp0))) |
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| 108 | delq(i) = (qstar(i)/RKAR)* & |
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| 109 | (log(zref/(rugos(i))+1.) & |
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| 110 | - 2.0 * log(0.5*(1. + xtmp*xtmp)) & |
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| 111 | + 2.0 * log(0.5*(1. + xtmp0*xtmp0))) |
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| 112 | ELSE |
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| 113 | delu(i) = 0.5 * speed(i) |
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| 114 | delte(i) = 0.5 * (tair(i) - ts(i) ) |
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| 115 | delq(i) = 0.5 * (max(qair(i),0.0) - max(qsurf(i),0.0)) |
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| 116 | ENDIF |
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| 117 | ENDIF |
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| [5099] | 118 | |
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| [3817] | 119 | ENDDO |
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| [5105] | 120 | |
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| [3817] | 121 | END SUBROUTINE screenp |
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| [5099] | 122 | |
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| [3817] | 123 | SUBROUTINE screenpn(klon, knon, nsrf, & |
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| [5087] | 124 | speed, tair, qair, & |
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| 125 | ts, qsurf, rugos, zri1, & |
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| 126 | zref, & |
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| 127 | delu, delte, delq) |
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| [5134] | 128 | IMPLICIT NONE |
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| [3817] | 129 | !------------------------------------------------------------------------- |
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| [5099] | 130 | |
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| [3817] | 131 | ! Objet : calcul "predicteur" des anomalies du vent, de la temperature |
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| 132 | ! potentielle et de l'humidite relative au niveau de reference zref et |
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| 133 | ! par rapport au 1er niveau (pour u) ou a la surface (pour theta et q) |
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| 134 | ! a partir des relations de Dyer-Businger. |
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| [5099] | 135 | |
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| [3817] | 136 | ! Reference : Hess, Colman et McAvaney (1995) |
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| [5099] | 137 | |
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| [3817] | 138 | ! I. Musat, 01.07.2002 |
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| 139 | !------------------------------------------------------------------------- |
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| [5099] | 140 | |
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| [3817] | 141 | ! klon----input-I- dimension de la grille physique (= nb_pts_latitude X nb_pts_longitude) |
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| 142 | ! knon----input-I- nombre de points pour un type de surface |
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| 143 | ! nsrf----input-I- indice pour le type de surface; voir indice_sol_mod.F90 |
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| 144 | ! speed---input-R- module du vent au 1er niveau du modele |
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| 145 | ! tair----input-R- temperature de l'air au 1er niveau du modele |
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| 146 | ! qair----input-R- humidite relative au 1er niveau du modele |
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| 147 | ! ts------input-R- temperature de l'air a la surface |
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| 148 | ! qsurf---input-R- humidite relative a la surface |
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| 149 | ! rugos---input-R- rugosite |
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| 150 | ! zref----input-R- altitude de reference |
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| [5099] | 151 | |
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| [3817] | 152 | ! delu----input-R- anomalie du vent par rapport au 1er niveau |
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| 153 | ! delte---input-R- anomalie de la temperature potentielle par rapport a la surface |
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| 154 | ! delq----input-R- anomalie de l'humidite relative par rapport a la surface |
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| [5099] | 155 | |
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| [5117] | 156 | INTEGER, INTENT(IN) :: klon, knon, nsrf |
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| 157 | REAL, DIMENSION(klon), INTENT(IN) :: speed, tair, qair |
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| 158 | REAL, DIMENSION(klon), INTENT(IN) :: ts, qsurf, rugos |
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| 159 | REAL, DIMENSION(klon), INTENT(IN) :: zri1 |
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| 160 | REAL, INTENT(IN) :: zref |
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| [5099] | 161 | |
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| [5117] | 162 | REAL, DIMENSION(klon), INTENT(OUT) :: delu, delte, delq |
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| [5099] | 163 | |
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| [3817] | 164 | !------------------------------------------------------------------------- |
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| 165 | ! Variables locales et constantes : |
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| 166 | REAL, PARAMETER :: RKAR=0.40 |
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| 167 | INTEGER :: i |
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| 168 | REAL :: xtmp, xtmp0 |
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| 169 | !------------------------------------------------------------------------- |
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| 170 | DO i = 1, knon |
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| [5099] | 171 | |
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| [5082] | 172 | IF (zri1(i)>=0.) THEN |
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| [3817] | 173 | delu(i) = 0.1 * speed(i) |
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| 174 | delte(i) = 0.1 * (tair(i) - ts(i) ) |
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| 175 | delq(i) = 0.1 * (max(qair(i),0.0) - max(qsurf(i),0.0)) |
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| 176 | ELSE |
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| 177 | delu(i) = 0.5 * speed(i) |
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| 178 | delte(i) = 0.5 * (tair(i) - ts(i) ) |
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| 179 | delq(i) = 0.5 * (max(qair(i),0.0) - max(qsurf(i),0.0)) |
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| 180 | ENDIF |
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| [5099] | 181 | |
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| [3817] | 182 | ENDDO |
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| [5105] | 183 | |
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| [3817] | 184 | END SUBROUTINE screenpn |
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| 185 | END MODULE screenp_mod |
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