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! |
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! $Header: /home/cvsroot/LMDZ4/libf/phylmd/nuage.F,v 1.1.1.1 2004/05/19 12:53:07 lmdzadmin Exp $ |
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! |
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SUBROUTINE nuage (paprs, pplay, |
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. t, pqlwp, pclc, pcltau, pclemi, |
| 6 |
. pch, pcl, pcm, pct, pctlwp, |
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e ok_aie, |
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e sulfate, sulfate_pi, |
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e bl95_b0, bl95_b1, |
| 10 |
s cldtaupi, re, fl) |
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use dimens_m |
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use dimphy |
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use YOMCST |
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IMPLICIT none |
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c====================================================================== |
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c Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910 |
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c Objet: Calculer epaisseur optique et emmissivite des nuages |
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c====================================================================== |
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c Arguments: |
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c t-------input-R-temperature |
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c pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg) |
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c pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1) |
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c ok_aie--input-L-apply aerosol indirect effect or not |
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c sulfate-input-R-sulfate aerosol mass concentration [um/m^3] |
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c sulfate_pi-input-R-dito, pre-industrial value |
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c bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land) |
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c bl95_b1-input-R-a parameter, may be varied for tests ( -"- ) |
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c |
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c cldtaupi-output-R-pre-industrial value of cloud optical thickness, |
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c needed for the diagnostics of the aerosol indirect |
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c radiative forcing (see radlwsw) |
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c re------output-R-Cloud droplet effective radius multiplied by fl [um] |
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c fl------output-R-Denominator to re, introduced to avoid problems in |
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c the averaging of the output. fl is the fraction of liquid |
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c water clouds within a grid cell |
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c |
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c pcltau--output-R-epaisseur optique des nuages |
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c pclemi--output-R-emissivite des nuages (0 a 1) |
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c====================================================================== |
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C |
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c |
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REAL, intent(in):: paprs(klon,klev+1) |
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real, intent(in):: pplay(klon,klev) |
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REAL t(klon,klev) |
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c |
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REAL pclc(klon,klev) |
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REAL pqlwp(klon,klev) |
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REAL pcltau(klon,klev), pclemi(klon,klev) |
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c |
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REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon) |
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c |
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LOGICAL lo |
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c |
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REAL cetahb, cetamb |
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PARAMETER (cetahb = 0.45, cetamb = 0.80) |
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C |
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INTEGER i, k |
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REAL zflwp, zradef, zfice, zmsac |
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c |
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REAL radius, rad_froid, rad_chaud, rad_chau1, rad_chau2 |
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PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0) |
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ccc PARAMETER (rad_chaud=15.0, rad_froid=35.0) |
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c sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0) |
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REAL coef, coef_froi, coef_chau |
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PARAMETER (coef_chau=0.13, coef_froi=0.09) |
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REAL seuil_neb, t_glace |
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PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0) |
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INTEGER nexpo ! exponentiel pour glace/eau |
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PARAMETER (nexpo=6) |
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|
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cjq for the aerosol indirect effect |
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cjq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 |
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cjq |
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LOGICAL ok_aie ! Apply AIE or not? |
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|
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REAL sulfate(klon, klev) ! sulfate aerosol mass concentration [ug m-3] |
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REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] |
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REAL re(klon, klev) ! cloud droplet effective radius [um] |
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REAL sulfate_pi(klon, klev) ! sulfate aerosol mass concentration [ug m-3] (pre-industrial value) |
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REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) |
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REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value) |
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|
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REAL fl(klon, klev) ! xliq * rneb (denominator to re; fraction of liquid water clouds within the grid cell) |
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|
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REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula |
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|
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REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag |
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cjq-end |
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|
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ccc PARAMETER (nexpo=1) |
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c |
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c Calculer l'epaisseur optique et l'emmissivite des nuages |
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c |
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DO k = 1, klev |
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DO i = 1, klon |
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rad_chaud = rad_chau1 |
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IF (k.LE.3) rad_chaud = rad_chau2 |
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|
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pclc(i,k) = MAX(pclc(i,k), seuil_neb) |
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zflwp = 1000.*pqlwp(i,k)/RG/pclc(i,k) |
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. *(paprs(i,k)-paprs(i,k+1)) |
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zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
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zfice = MIN(MAX(zfice,0.0),1.0) |
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zfice = zfice**nexpo |
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|
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IF (ok_aie) THEN |
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! Formula "D" of Boucher and Lohmann, Tellus, 1995 |
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! |
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cdnc(i,k) = 10.**(bl95_b0+bl95_b1* |
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. log(MAX(sulfate(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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! Cloud droplet number concentration (CDNC) is restricted |
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! to be within [20, 1000 cm^3] |
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! |
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cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k))) |
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cdnc_pi(i,k) = 10.**(bl95_b0+bl95_b1* |
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. log(MAX(sulfate_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k))) |
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! |
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! |
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! air density: pplay(i,k) / (RD * zT(i,k)) |
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! factor 1.1: derive effective radius from volume-mean radius |
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! factor 1000 is the water density |
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! _chaud means that this is the CDR for liquid water clouds |
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! |
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rad_chaud = |
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. 1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) ) |
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. / (4./3. * RPI * 1000. * cdnc(i,k)) )**(1./3.) |
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! |
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! Convert to um. CDR shall be at least 3 um. |
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! |
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rad_chaud = MAX(rad_chaud*1.e6, 3.) |
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|
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! For output diagnostics |
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! |
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! Cloud droplet effective radius [um] |
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! |
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! we multiply here with f * xl (fraction of liquid water |
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! clouds in the grid cell) to avoid problems in the |
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! averaging of the output. |
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! In the output of IOIPSL, derive the real cloud droplet |
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! effective radius as re/fl |
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! |
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fl(i,k) = pclc(i,k)*(1.-zfice) |
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re(i,k) = rad_chaud*fl(i,k) |
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|
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! Pre-industrial cloud opt thickness |
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! |
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! "radius" is calculated as rad_chaud above (plus the |
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! ice cloud contribution) but using cdnc_pi instead of |
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! cdnc. |
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radius = MAX(1.1e6 * ( (pqlwp(i,k)*pplay(i,k)/(RD*T(i,k))) |
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. / (4./3.*RPI*1000.*cdnc_pi(i,k)) )**(1./3.), |
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. 3.) * (1.-zfice) + rad_froid * zfice |
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cldtaupi(i,k) = 3.0/2.0 * zflwp / radius |
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. |
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ENDIF ! ok_aie |
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|
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radius = rad_chaud * (1.-zfice) + rad_froid * zfice |
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coef = coef_chau * (1.-zfice) + coef_froi * zfice |
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pcltau(i,k) = 3.0/2.0 * zflwp / radius |
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pclemi(i,k) = 1.0 - EXP( - coef * zflwp) |
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lo = (pclc(i,k) .LE. seuil_neb) |
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IF (lo) pclc(i,k) = 0.0 |
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IF (lo) pcltau(i,k) = 0.0 |
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IF (lo) pclemi(i,k) = 0.0 |
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|
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IF (.NOT.ok_aie) cldtaupi(i,k)=pcltau(i,k) |
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ENDDO |
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ENDDO |
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ccc DO k = 1, klev |
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ccc DO i = 1, klon |
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ccc t(i,k) = t(i,k) |
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ccc pclc(i,k) = MAX( 1.e-5 , pclc(i,k) ) |
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ccc lo = pclc(i,k) .GT. (2.*1.e-5) |
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ccc zflwp = pqlwp(i,k)*1000.*(paprs(i,k)-paprs(i,k+1)) |
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ccc . /(rg*pclc(i,k)) |
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ccc zradef = 10.0 + (1.-sigs(k))*45.0 |
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ccc pcltau(i,k) = 1.5 * zflwp / zradef |
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ccc zfice=1.0-MIN(MAX((t(i,k)-263.)/(273.-263.),0.0),1.0) |
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ccc zmsac = 0.13*(1.0-zfice) + 0.08*zfice |
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ccc pclemi(i,k) = 1.-EXP(-zmsac*zflwp) |
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ccc if (.NOT.lo) pclc(i,k) = 0.0 |
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ccc if (.NOT.lo) pcltau(i,k) = 0.0 |
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ccc if (.NOT.lo) pclemi(i,k) = 0.0 |
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ccc ENDDO |
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ccc ENDDO |
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cccccc print*, 'pas de nuage dans le rayonnement' |
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cccccc DO k = 1, klev |
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cccccc DO i = 1, klon |
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cccccc pclc(i,k) = 0.0 |
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cccccc pcltau(i,k) = 0.0 |
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cccccc pclemi(i,k) = 0.0 |
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cccccc ENDDO |
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cccccc ENDDO |
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C |
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C COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
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C |
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DO i = 1, klon |
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pct(i)=1.0 |
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pch(i)=1.0 |
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pcm(i) = 1.0 |
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pcl(i) = 1.0 |
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pctlwp(i) = 0.0 |
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ENDDO |
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C |
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DO k = klev, 1, -1 |
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DO i = 1, klon |
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pctlwp(i) = pctlwp(i) |
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. + pqlwp(i,k)*(paprs(i,k)-paprs(i,k+1))/RG |
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pct(i) = pct(i)*(1.0-pclc(i,k)) |
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if (pplay(i,k).LE.cetahb*paprs(i,1)) |
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. pch(i) = pch(i)*(1.0-pclc(i,k)) |
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if (pplay(i,k).GT.cetahb*paprs(i,1) .AND. |
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. pplay(i,k).LE.cetamb*paprs(i,1)) |
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. pcm(i) = pcm(i)*(1.0-pclc(i,k)) |
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if (pplay(i,k).GT.cetamb*paprs(i,1)) |
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. pcl(i) = pcl(i)*(1.0-pclc(i,k)) |
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ENDDO |
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ENDDO |
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C |
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DO i = 1, klon |
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pct(i)=1.-pct(i) |
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pch(i)=1.-pch(i) |
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pcm(i)=1.-pcm(i) |
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pcl(i)=1.-pcl(i) |
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ENDDO |
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C |
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RETURN |
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END |
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SUBROUTINE diagcld1(paprs,pplay,rain,snow,kbot,ktop, |
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. diafra,dialiq) |
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use dimens_m |
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use dimphy |
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use YOMCST |
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IMPLICIT none |
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c |
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c Laurent Li (LMD/CNRS), le 12 octobre 1998 |
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c (adaptation du code ECMWF) |
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c |
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c Dans certains cas, le schema pronostique des nuages n'est |
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c pas suffisament performant. On a donc besoin de diagnostiquer |
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c ces nuages. Je dois avouer que c'est une frustration. |
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c |
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c |
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c Arguments d'entree: |
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REAL, intent(in):: paprs(klon,klev+1) ! pression (Pa) a inter-couche |
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REAL, intent(in):: pplay(klon,klev) ! pression (Pa) au milieu de couche |
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REAL t(klon,klev) ! temperature (K) |
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REAL q(klon,klev) ! humidite specifique (Kg/Kg) |
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REAL rain(klon) ! pluie convective (kg/m2/s) |
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REAL snow(klon) ! neige convective (kg/m2/s) |
| 252 |
INTEGER ktop(klon) ! sommet de la convection |
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INTEGER kbot(klon) ! bas de la convection |
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c |
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c Arguments de sortie: |
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REAL diafra(klon,klev) ! fraction nuageuse diagnostiquee |
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REAL dialiq(klon,klev) ! eau liquide nuageuse |
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c |
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c Constantes ajustables: |
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REAL CANVA, CANVB, CANVH |
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PARAMETER (CANVA=2.0, CANVB=0.3, CANVH=0.4) |
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REAL CCA, CCB, CCC |
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PARAMETER (CCA=0.125, CCB=1.5, CCC=0.8) |
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REAL CCFCT, CCSCAL |
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PARAMETER (CCFCT=0.400) |
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PARAMETER (CCSCAL=1.0E+11) |
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REAL CETAHB, CETAMB |
| 268 |
PARAMETER (CETAHB=0.45, CETAMB=0.80) |
| 269 |
REAL CCLWMR |
| 270 |
PARAMETER (CCLWMR=1.E-04) |
| 271 |
REAL ZEPSCR |
| 272 |
PARAMETER (ZEPSCR=1.0E-10) |
| 273 |
c |
| 274 |
c Variables locales: |
| 275 |
INTEGER i, k |
| 276 |
REAL zcc(klon) |
| 277 |
c |
| 278 |
c Initialisation: |
| 279 |
c |
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DO k = 1, klev |
| 281 |
DO i = 1, klon |
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diafra(i,k) = 0.0 |
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dialiq(i,k) = 0.0 |
| 284 |
ENDDO |
| 285 |
ENDDO |
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c |
| 287 |
DO i = 1, klon ! Calculer la fraction nuageuse |
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zcc(i) = 0.0 |
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IF((rain(i)+snow(i)).GT.0.) THEN |
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zcc(i)= CCA * LOG(MAX(ZEPSCR,(rain(i)+snow(i))*CCSCAL))-CCB |
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zcc(i)= MIN(CCC,MAX(0.0,zcc(i))) |
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ENDIF |
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ENDDO |
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c |
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DO i = 1, klon ! pour traiter les enclumes |
| 296 |
diafra(i,ktop(i)) = MAX(diafra(i,ktop(i)),zcc(i)*CCFCT) |
| 297 |
IF ((zcc(i).GE.CANVH) .AND. |
| 298 |
. (pplay(i,ktop(i)).LE.CETAHB*paprs(i,1))) |
| 299 |
. diafra(i,ktop(i)) = MAX(diafra(i,ktop(i)), |
| 300 |
. MAX(zcc(i)*CCFCT,CANVA*(zcc(i)-CANVB))) |
| 301 |
dialiq(i,ktop(i))=CCLWMR*diafra(i,ktop(i)) |
| 302 |
ENDDO |
| 303 |
c |
| 304 |
DO k = 1, klev ! nuages convectifs (sauf enclumes) |
| 305 |
DO i = 1, klon |
| 306 |
IF (k.LT.ktop(i) .AND. k.GE.kbot(i)) THEN |
| 307 |
diafra(i,k)=MAX(diafra(i,k),zcc(i)*CCFCT) |
| 308 |
dialiq(i,k)=CCLWMR*diafra(i,k) |
| 309 |
ENDIF |
| 310 |
ENDDO |
| 311 |
ENDDO |
| 312 |
c |
| 313 |
RETURN |
| 314 |
END |
| 315 |
SUBROUTINE diagcld2(paprs,pplay,t,q, diafra,dialiq) |
| 316 |
use dimens_m |
| 317 |
use dimphy |
| 318 |
use YOMCST |
| 319 |
use yoethf |
| 320 |
c Fonctions thermodynamiques: |
| 321 |
use fcttre |
| 322 |
IMPLICIT none |
| 323 |
c |
| 324 |
c |
| 325 |
c Arguments d'entree: |
| 326 |
REAL, intent(in):: paprs(klon,klev+1) ! pression (Pa) a inter-couche |
| 327 |
REAL, intent(in):: pplay(klon,klev) ! pression (Pa) au milieu de couche |
| 328 |
REAL t(klon,klev) ! temperature (K) |
| 329 |
REAL q(klon,klev) ! humidite specifique (Kg/Kg) |
| 330 |
c |
| 331 |
c Arguments de sortie: |
| 332 |
REAL diafra(klon,klev) ! fraction nuageuse diagnostiquee |
| 333 |
REAL dialiq(klon,klev) ! eau liquide nuageuse |
| 334 |
c |
| 335 |
REAL CETAMB |
| 336 |
PARAMETER (CETAMB=0.80) |
| 337 |
REAL CLOIA, CLOIB, CLOIC, CLOID |
| 338 |
PARAMETER (CLOIA=1.0E+02, CLOIB=-10.00, CLOIC=-0.6, CLOID=5.0) |
| 339 |
ccc PARAMETER (CLOIA=1.0E+02, CLOIB=-10.00, CLOIC=-0.9, CLOID=5.0) |
| 340 |
REAL RGAMMAS |
| 341 |
PARAMETER (RGAMMAS=0.05) |
| 342 |
REAL CRHL |
| 343 |
PARAMETER (CRHL=0.15) |
| 344 |
ccc PARAMETER (CRHL=0.70) |
| 345 |
REAL t_coup |
| 346 |
PARAMETER (t_coup=234.0) |
| 347 |
c |
| 348 |
c Variables locales: |
| 349 |
INTEGER i, k, kb, invb(klon) |
| 350 |
REAL zqs, zrhb, zcll, zdthmin(klon), zdthdp |
| 351 |
REAL zdelta, zcor |
| 352 |
c |
| 353 |
c |
| 354 |
c Initialisation: |
| 355 |
c |
| 356 |
DO k = 1, klev |
| 357 |
DO i = 1, klon |
| 358 |
diafra(i,k) = 0.0 |
| 359 |
dialiq(i,k) = 0.0 |
| 360 |
ENDDO |
| 361 |
ENDDO |
| 362 |
c |
| 363 |
DO i = 1, klon |
| 364 |
invb(i) = klev |
| 365 |
zdthmin(i)=0.0 |
| 366 |
ENDDO |
| 367 |
|
| 368 |
DO k = 2, klev/2-1 |
| 369 |
DO i = 1, klon |
| 370 |
zdthdp = (t(i,k)-t(i,k+1))/(pplay(i,k)-pplay(i,k+1)) |
| 371 |
. - RD * 0.5*(t(i,k)+t(i,k+1))/RCPD/paprs(i,k+1) |
| 372 |
zdthdp = zdthdp * CLOIA |
| 373 |
IF (pplay(i,k).GT.CETAMB*paprs(i,1) .AND. |
| 374 |
. zdthdp.LT.zdthmin(i) ) THEN |
| 375 |
zdthmin(i) = zdthdp |
| 376 |
invb(i) = k |
| 377 |
ENDIF |
| 378 |
ENDDO |
| 379 |
ENDDO |
| 380 |
|
| 381 |
DO i = 1, klon |
| 382 |
kb=invb(i) |
| 383 |
IF (thermcep) THEN |
| 384 |
zdelta=MAX(0.,SIGN(1.,RTT-t(i,kb))) |
| 385 |
zqs= R2ES*FOEEW(t(i,kb),zdelta)/pplay(i,kb) |
| 386 |
zqs=MIN(0.5,zqs) |
| 387 |
zcor=1./(1.-RETV*zqs) |
| 388 |
zqs=zqs*zcor |
| 389 |
ELSE |
| 390 |
IF (t(i,kb) .LT. t_coup) THEN |
| 391 |
zqs = qsats(t(i,kb)) / pplay(i,kb) |
| 392 |
ELSE |
| 393 |
zqs = qsatl(t(i,kb)) / pplay(i,kb) |
| 394 |
ENDIF |
| 395 |
ENDIF |
| 396 |
zcll = CLOIB * zdthmin(i) + CLOIC |
| 397 |
zcll = MIN(1.0,MAX(0.0,zcll)) |
| 398 |
zrhb= q(i,kb)/zqs |
| 399 |
IF (zcll.GT.0.0.AND.zrhb.LT.CRHL) |
| 400 |
. zcll=zcll*(1.-(CRHL-zrhb)*CLOID) |
| 401 |
zcll=MIN(1.0,MAX(0.0,zcll)) |
| 402 |
diafra(i,kb) = MAX(diafra(i,kb),zcll) |
| 403 |
dialiq(i,kb)= diafra(i,kb) * RGAMMAS*zqs |
| 404 |
ENDDO |
| 405 |
c |
| 406 |
RETURN |
| 407 |
END |
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