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module screenp_m |
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|
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IMPLICIT none |
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|
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contains |
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|
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SUBROUTINE screenp(knon, speed, tair, qair, ts, qsurf, rugos, lmon, ustar, & |
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testar, qstar, zref, delu, delte, delq) |
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|
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! From LMDZ4/libf/phylmd/screenp.F90, version 1.1.1.1, 2004/05/19 12:53:09 |
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|
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! Objet : calcul "pr\'edicteur" des anomalies du vent, de la |
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! temp\'erature potentielle et de l'humidit\'e relative au niveau |
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! de r\'ef\'erence zref et par rapport au 1er niveau (pour u) ou |
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! \`a la surface (pour theta et q) \`a partir des relations de |
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! Dyer-Businger. |
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|
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! Reference: Hess, Colman and McAvaney (1995) |
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|
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! I. Musat, July 2002 |
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|
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use dimphy, only: klon |
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|
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INTEGER, intent(in):: knon ! nombre de points pour un type de surface |
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REAL, intent(in):: speed(klon) ! module du vent au 1er niveau du modele |
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REAL, intent(in):: tair(klon) ! temperature de l'air au 1er niveau du modele |
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REAL, intent(in):: qair(klon) ! humidite relative au 1er niveau du modele |
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REAL, intent(in):: ts(klon) ! temperature de l'air a la surface |
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REAL, intent(in):: qsurf(:) ! (knon) humidite relative a la surface |
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REAL, intent(in):: rugos(klon) ! rugosite |
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DOUBLE PRECISION, intent(in):: lmon(klon) ! longueur de Monin-Obukov |
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REAL, intent(in):: ustar(:) ! (knon) facteur d'\'echelle pour le vent |
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|
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REAL, intent(in):: testar(klon) |
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! facteur d'echelle pour la temperature potentielle |
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|
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REAL, intent(in):: qstar(klon) ! facteur d'echelle pour l'humidite relative |
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REAL, intent(in):: zref ! altitude de reference |
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REAL, intent(out):: delu(klon) ! anomalie du vent par rapport au 1er niveau |
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|
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REAL, intent(out):: delte(klon) |
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! anomalie de la temperature potentielle par rapport a la surface |
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|
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REAL, intent(out):: delq(klon) |
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! anomalie de l'humidite relative par rapport a la surface |
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|
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! Local: |
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REAL, PARAMETER:: RKAR=0.40 |
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INTEGER i |
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REAL xtmp, xtmp0 |
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|
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!------------------------------------------------------------------------- |
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|
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DO i = 1, knon |
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IF (lmon(i) >= 0.) THEN |
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! STABLE CASE |
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IF (speed(i) > 1.5.AND.lmon(i) <= 1.0) THEN |
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delu(i) = (ustar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) + & |
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min(5d0, 5d0 *(zref - rugos(i))/lmon(i))) |
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delte(i) = (testar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) + & |
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min(5d0, 5d0 * (zref - rugos(i))/lmon(i))) |
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delq(i) = (qstar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) + & |
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min(5d0, 5d0 * (zref - rugos(i))/lmon(i))) |
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ELSE |
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delu(i) = 0.1 * speed(i) |
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delte(i) = 0.1 * (tair(i) - ts(i)) |
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delq(i) = 0.1 * (max(qair(i), 0.0) - max(qsurf(i), 0.0)) |
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ENDIF |
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ELSE |
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! UNSTABLE CASE |
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IF (speed(i) > 5.0.AND.abs(lmon(i)) <= 50.0) THEN |
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xtmp = (1. - 16. * (zref/lmon(i)))**(1./4.) |
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xtmp0 = (1. - 16. * (rugos(i)/lmon(i)))**(1./4.) |
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delu(i) = (ustar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) & |
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- 2.*log(0.5*(1. + xtmp)) & |
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+ 2.*log(0.5*(1. + xtmp0)) & |
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- log(0.5*(1. + xtmp*xtmp)) & |
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+ log(0.5*(1. + xtmp0*xtmp0)) & |
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+ 2.*atan(xtmp) - 2.*atan(xtmp0)) |
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delte(i) = (testar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) & |
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- 2.0 * log(0.5*(1. + xtmp*xtmp)) & |
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+ 2.0 * log(0.5*(1. + xtmp0*xtmp0))) |
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delq(i) = (qstar(i)/RKAR)* & |
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(log(zref/(rugos(i))+1.) & |
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- 2.0 * log(0.5*(1. + xtmp*xtmp)) & |
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+ 2.0 * log(0.5*(1. + xtmp0*xtmp0))) |
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ELSE |
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delu(i) = 0.5 * speed(i) |
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delte(i) = 0.5 * (tair(i) - ts(i)) |
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delq(i) = 0.5 * (max(qair(i), 0.0) - max(qsurf(i), 0.0)) |
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ENDIF |
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ENDIF |
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ENDDO |
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|
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END SUBROUTINE screenp |
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|
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end module screenp_m |
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