SUBROUTINE stdlevvar(klon, knon, nsrf, zxli, & u1, v1, t1, q1, z1, & ts1, qsurf, rugos, psol, pat1, & t_2m, q_2m, u_10m) IMPLICIT NONE !------------------------------------------------------------------------- ! ! Objet : calcul de la temperature et l'humidite relative a 2m et du ! module du vent a 10m a partir des relations de Dyer-Businger et ! des equations de Louis. ! ! Reference : Hess, Colman et McAvaney (1995) ! ! I. Musat, 01.07.2002 !------------------------------------------------------------------------- ! ! klon----input-I- dimension de la grille physique (= nb_pts_latitude X nb_pts_longitude) ! knon----input-I- nombre de points pour un type de surface ! nsrf----input-I- indice pour le type de surface; voir indicesol.inc ! zxli----input-L- TRUE si calcul des cdrags selon Laurent Li ! u1------input-R- vent zonal au 1er niveau du modele ! v1------input-R- vent meridien au 1er niveau du modele ! t1------input-R- temperature de l'air au 1er niveau du modele ! q1------input-R- humidite relative au 1er niveau du modele ! z1------input-R- geopotentiel au 1er niveau du modele ! ts1-----input-R- temperature de l'air a la surface ! qsurf---input-R- humidite relative a la surface ! rugos---input-R- rugosite ! psol----input-R- pression au sol ! pat1----input-R- pression au 1er niveau du modele ! ! t_2m---output-R- temperature de l'air a 2m ! q_2m---output-R- humidite relative a 2m ! u_10m--output-R- vitesse du vent a 10m ! INTEGER, intent(in) :: klon, knon, nsrf LOGICAL, intent(in) :: zxli REAL, dimension(klon), intent(in) :: u1, v1, t1, q1, z1, ts1 REAL, dimension(klon), intent(in) :: qsurf, rugos REAL, dimension(klon), intent(in) :: psol, pat1 ! REAL, dimension(klon), intent(out) :: t_2m, q_2m, u_10m !------------------------------------------------------------------------- #include "YOMCST.inc" !IM PLUS #include "YOETHF.inc" ! ! Quelques constantes et options: ! ! RKAR : constante de von Karman REAL, PARAMETER :: RKAR=0.40 ! niter : nombre iterations calcul "corrector" INTEGER, parameter :: niter=6, ncon=niter-1 ! ! Variables locales INTEGER :: i, n REAL :: zref REAL, dimension(klon) :: speed ! tpot : temperature potentielle REAL, dimension(klon) :: tpot REAL, dimension(klon) :: zri1, cdran REAL, dimension(klon) :: cdram, cdrah ! ri1 : nb. de Richardson entre la surface --> la 1ere couche REAL, dimension(klon) :: ri1 REAL, dimension(klon) :: ustar, testar, qstar REAL, dimension(klon) :: zdte, zdq ! lmon : longueur de Monin-Obukhov selon Hess, Colman and McAvaney DOUBLE PRECISION, dimension(klon) :: lmon DOUBLE PRECISION, parameter :: eps=1.0D-20 REAL, dimension(klon) :: delu, delte, delq REAL, dimension(klon) :: u_zref, te_zref, q_zref REAL, dimension(klon) :: temp, pref LOGICAL :: okri REAL, dimension(klon) :: u_zref_p, te_zref_p, temp_p, q_zref_p REAL, dimension(klon) :: u_zref_c, te_zref_c, temp_c, q_zref_c REAL, dimension(klon) :: ok_pred, ok_corr REAL, dimension(klon) :: conv_te, conv_q !------------------------------------------------------------------------- DO i=1, knon speed(i)=SQRT(u1(i)**2+v1(i)**2) ri1(i) = 0.0 ENDDO ! okri=.FALSE. CALL coefcdrag(klon, knon, nsrf, zxli, & speed, t1, q1, z1, psol, & ts1, qsurf, rugos, okri, ri1, & cdram, cdrah, cdran, zri1, pref) ! !---------Star variables---------------------------------------------------- ! DO i = 1, knon ri1(i) = zri1(i) tpot(i) = t1(i)* (psol(i)/pat1(i))**RKAPPA ustar(i) = sqrt(cdram(i) * speed(i) * speed(i)) zdte(i) = tpot(i) - ts1(i) zdq(i) = max(q1(i),0.0) - max(qsurf(i),0.0) ! testar(i) = (cdrah(i) * zdte(i) * speed(i))/ustar(i) qstar(i) = (cdrah(i) * zdq(i) * speed(i))/ustar(i) lmon(i) = (ustar(i) * ustar(i) * tpot(i))/ & (RKAR * RG * testar(i)) ENDDO ! !----------First aproximation of variables at zref -------------------------- zref = 2.0 CALL screenp(klon, knon, nsrf, speed, tpot, q1, & ts1, qsurf, rugos, lmon, & ustar, testar, qstar, zref, & delu, delte, delq) ! DO i = 1, knon u_zref(i) = delu(i) q_zref(i) = max(qsurf(i),0.0) + delq(i) te_zref(i) = ts1(i) + delte(i) temp(i) = te_zref(i) * (psol(i)/pat1(i))**(-RKAPPA) ! q_zref_p(i) = q_zref(i) ! te_zref_p(i) = te_zref(i) temp_p(i) = temp(i) ENDDO ! ! Iteration of the variables at the reference level zref : corrector calculation ; see Hess & McAvaney, 1995 ! DO n = 1, niter ! okri=.TRUE. CALL screenc(klon, knon, nsrf, zxli, & u_zref, temp, q_zref, zref, & ts1, qsurf, rugos, psol, & ustar, testar, qstar, okri, ri1, & pref, delu, delte, delq) ! DO i = 1, knon u_zref(i) = delu(i) q_zref(i) = delq(i) + max(qsurf(i),0.0) te_zref(i) = delte(i) + ts1(i) ! ! return to normal temperature ! temp(i) = te_zref(i) * (psol(i)/pref(i))**(-RKAPPA) ! temp(i) = te_zref(i) - (zref* RG)/RCPD/ & ! (1 + RVTMP2 * max(q_zref(i),0.0)) ! IF(temp(i).GT.350.) THEN WRITE(*,*) 'temp(i) GT 350 K !!',i,nsrf,temp(i) ENDIF ! IF(n.EQ.ncon) THEN te_zref_p(i) = te_zref(i) q_zref_p(i) = q_zref(i) ENDIF ! ENDDO ! ENDDO ! ! verifier le critere de convergence : 0.25% pour te_zref et 5% pour qe_zref ! DO i = 1, knon conv_te(i) = (te_zref(i) - te_zref_p(i))/te_zref_p(i) conv_q(i) = (q_zref(i) - q_zref_p(i))/q_zref_p(i) ! IF(abs(conv_te(i)).GE.0.0025.AND.abs(conv_q(i)).GE.0.05) THEN ! PRINT*,'DIV','i=',i,te_zref_p(i),te_zref(i),conv_te(i), & ! q_zref_p(i),q_zref(i),conv_q(i) ! ENDIF ENDDO ! DO i = 1, knon q_zref_c(i) = q_zref(i) temp_c(i) = temp(i) ! IF(zri1(i).LT.0.) THEN IF(nsrf.EQ.1) THEN ok_pred(i)=1. ok_corr(i)=0. ELSE ok_pred(i)=0. ok_corr(i)=1. ENDIF ELSE ok_pred(i)=0. ok_corr(i)=1. ENDIF ! t_2m(i) = temp_p(i) * ok_pred(i) + temp_c(i) * ok_corr(i) q_2m(i) = q_zref_p(i) * ok_pred(i) + q_zref_c(i) * ok_corr(i) ENDDO ! ! !----------First aproximation of variables at zref -------------------------- ! zref = 10.0 CALL screenp(klon, knon, nsrf, speed, tpot, q1, & ts1, qsurf, rugos, lmon, & ustar, testar, qstar, zref, & delu, delte, delq) ! DO i = 1, knon u_zref(i) = delu(i) q_zref(i) = max(qsurf(i),0.0) + delq(i) te_zref(i) = ts1(i) + delte(i) temp(i) = te_zref(i) * (psol(i)/pat1(i))**(-RKAPPA) ! temp(i) = te_zref(i) - (zref* RG)/RCPD/ & ! (1 + RVTMP2 * max(q_zref(i),0.0)) u_zref_p(i) = u_zref(i) ENDDO ! ! Iteration of the variables at the reference level zref : corrector ; see Hess & McAvaney, 1995 ! DO n = 1, niter ! okri=.TRUE. CALL screenc(klon, knon, nsrf, zxli, & u_zref, temp, q_zref, zref, & ts1, qsurf, rugos, psol, & ustar, testar, qstar, okri, ri1, & pref, delu, delte, delq) ! DO i = 1, knon u_zref(i) = delu(i) q_zref(i) = delq(i) + max(qsurf(i),0.0) te_zref(i) = delte(i) + ts1(i) temp(i) = te_zref(i) * (psol(i)/pref(i))**(-RKAPPA) ! temp(i) = te_zref(i) - (zref* RG)/RCPD/ & ! (1 + RVTMP2 * max(q_zref(i),0.0)) ENDDO ! ENDDO ! DO i = 1, knon u_zref_c(i) = u_zref(i) ! u_10m(i) = u_zref_p(i) * ok_pred(i) + u_zref_c(i) * ok_corr(i) ENDDO ! RETURN END subroutine stdlevvar