| 1 |
SUBROUTINE nuage (paprs, pplay, & |
module nuage_m |
| 2 |
t, pqlwp, pclc, pcltau, pclemi, & |
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pch, pcl, pcm, pct, pctlwp, & |
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ok_aie, & |
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sulfate, sulfate_pi, & |
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bl95_b0, bl95_b1, & |
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cldtaupi, re, fl) |
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! |
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! From LMDZ4/libf/phylmd/nuage.F, version 1.1.1.1 2004/05/19 12:53:07 |
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! |
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use dimens_m |
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use dimphy |
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use SUPHEC_M |
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| 3 |
IMPLICIT none |
IMPLICIT none |
| 4 |
!====================================================================== |
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! Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910 |
contains |
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! Objet: Calculer epaisseur optique et emmissivite des nuages |
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| 7 |
!====================================================================== |
SUBROUTINE nuage (paprs, pplay, t, pqlwp, pclc, pcltau, pclemi, pch, pcl, & |
| 8 |
! Arguments: |
pcm, pct, pctlwp, ok_aie, sulfate, sulfate_pi, bl95_b0, bl95_b1, & |
| 9 |
! t-------input-R-temperature |
cldtaupi, re, fl) |
| 10 |
! pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg) |
! |
| 11 |
! pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1) |
! From LMDZ4/libf/phylmd/nuage.F, version 1.1.1.1 2004/05/19 12:53:07 |
| 12 |
! ok_aie--input-L-apply aerosol indirect effect or not |
! |
| 13 |
! sulfate-input-R-sulfate aerosol mass concentration [um/m^3] |
use dimens_m |
| 14 |
! sulfate_pi-input-R-dito, pre-industrial value |
use dimphy |
| 15 |
! bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land) |
use nr_util, only: pi |
| 16 |
! bl95_b1-input-R-a parameter, may be varied for tests ( -"- ) |
use SUPHEC_M |
| 17 |
! |
!====================================================================== |
| 18 |
! cldtaupi-output-R-pre-industrial value of cloud optical thickness, |
! Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910 |
| 19 |
! needed for the diagnostics of the aerosol indirect |
! Objet: Calculer epaisseur optique et emmissivite des nuages |
| 20 |
! radiative forcing (see radlwsw) |
!====================================================================== |
| 21 |
! re------output-R-Cloud droplet effective radius multiplied by fl [um] |
! Arguments: |
| 22 |
! fl------output-R-Denominator to re, introduced to avoid problems in |
! t-------input-R-temperature |
| 23 |
! the averaging of the output. fl is the fraction of liquid |
! pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg) |
| 24 |
! water clouds within a grid cell |
! pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1) |
| 25 |
! |
! ok_aie--input-L-apply aerosol indirect effect or not |
| 26 |
! pcltau--output-R-epaisseur optique des nuages |
! sulfate-input-R-sulfate aerosol mass concentration [um/m^3] |
| 27 |
! pclemi--output-R-emissivite des nuages (0 a 1) |
! sulfate_pi-input-R-dito, pre-industrial value |
| 28 |
!====================================================================== |
! bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land) |
| 29 |
! |
! bl95_b1-input-R-a parameter, may be varied for tests ( -"- ) |
| 30 |
! |
! |
| 31 |
REAL, intent(in):: paprs(klon,klev+1) |
! cldtaupi-output-R-pre-industrial value of cloud optical thickness, |
| 32 |
real, intent(in):: pplay(klon,klev) |
! needed for the diagnostics of the aerosol indirect |
| 33 |
REAL, intent(in):: t(klon,klev) |
! radiative forcing (see radlwsw) |
| 34 |
! |
! re------output-R-Cloud droplet effective radius multiplied by fl [um] |
| 35 |
REAL pclc(klon,klev) |
! fl------output-R-Denominator to re, introduced to avoid problems in |
| 36 |
REAL pqlwp(klon,klev) |
! the averaging of the output. fl is the fraction of liquid |
| 37 |
REAL pcltau(klon,klev), pclemi(klon,klev) |
! water clouds within a grid cell |
| 38 |
! |
! |
| 39 |
REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon) |
! pcltau--output-R-epaisseur optique des nuages |
| 40 |
! |
! pclemi--output-R-emissivite des nuages (0 a 1) |
| 41 |
LOGICAL lo |
!====================================================================== |
| 42 |
! |
! |
| 43 |
REAL cetahb, cetamb |
! |
| 44 |
PARAMETER (cetahb = 0.45, cetamb = 0.80) |
REAL, intent(in):: paprs(klon,klev+1) |
| 45 |
! |
real, intent(in):: pplay(klon,klev) |
| 46 |
INTEGER i, k |
REAL, intent(in):: t(klon,klev) |
| 47 |
REAL zflwp, zradef, zfice, zmsac |
! |
| 48 |
! |
REAL pclc(klon,klev) |
| 49 |
REAL radius, rad_froid, rad_chaud, rad_chau1, rad_chau2 |
REAL pqlwp(klon,klev) |
| 50 |
PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0) |
REAL pcltau(klon,klev), pclemi(klon,klev) |
| 51 |
!cc PARAMETER (rad_chaud=15.0, rad_froid=35.0) |
! |
| 52 |
! sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0) |
REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon) |
| 53 |
REAL coef, coef_froi, coef_chau |
! |
| 54 |
PARAMETER (coef_chau=0.13, coef_froi=0.09) |
LOGICAL lo |
| 55 |
REAL seuil_neb, t_glace |
! |
| 56 |
PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0) |
REAL cetahb, cetamb |
| 57 |
INTEGER nexpo ! exponentiel pour glace/eau |
PARAMETER (cetahb = 0.45, cetamb = 0.80) |
| 58 |
PARAMETER (nexpo=6) |
! |
| 59 |
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INTEGER i, k |
| 60 |
!jq for the aerosol indirect effect |
REAL zflwp, zfice |
| 61 |
!jq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 |
! |
| 62 |
!jq |
REAL radius, rad_froid, rad_chaud, rad_chau1, rad_chau2 |
| 63 |
LOGICAL ok_aie ! Apply AIE or not? |
PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0) |
| 64 |
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!cc PARAMETER (rad_chaud=15.0, rad_froid=35.0) |
| 65 |
REAL sulfate(klon, klev) ! sulfate aerosol mass concentration [ug m-3] |
! sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0) |
| 66 |
REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] |
REAL coef, coef_froi, coef_chau |
| 67 |
REAL re(klon, klev) ! cloud droplet effective radius [um] |
PARAMETER (coef_chau=0.13, coef_froi=0.09) |
| 68 |
REAL sulfate_pi(klon, klev) ! sulfate aerosol mass concentration [ug m-3] (pre-industrial value) |
REAL seuil_neb, t_glace |
| 69 |
REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) |
PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0) |
| 70 |
REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value) |
INTEGER nexpo ! exponentiel pour glace/eau |
| 71 |
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PARAMETER (nexpo=6) |
| 72 |
REAL fl(klon, klev) ! xliq * rneb (denominator to re ; fraction of liquid water clouds within the grid cell) |
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| 73 |
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!jq for the aerosol indirect effect |
| 74 |
REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula |
!jq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 |
| 75 |
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!jq |
| 76 |
REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag |
LOGICAL ok_aie ! Apply AIE or not? |
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!cc PARAMETER (nexpo=1) |
REAL sulfate(klon, klev) ! sulfate aerosol mass concentration [ug m-3] |
| 79 |
! |
REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] |
| 80 |
! Calculer l'epaisseur optique et l'emmissivite des nuages |
REAL re(klon, klev) ! cloud droplet effective radius [um] |
| 81 |
! |
REAL, intent(in):: sulfate_pi(klon, klev) ! sulfate aerosol mass concentration [ug m-3] (pre-industrial value) |
| 82 |
DO k = 1, klev |
REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) |
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DO i = 1, klon |
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rad_chaud = rad_chau1 |
REAL fl(klon, klev) ! xliq * rneb (denominator to re ; fraction of liquid water clouds within the grid cell) |
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IF (k.LE.3) rad_chaud = rad_chau2 |
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| 86 |
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REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula |
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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) & |
REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag |
| 89 |
*(paprs(i,k)-paprs(i,k+1)) |
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zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
!cc PARAMETER (nexpo=1) |
| 91 |
zfice = MIN(MAX(zfice,0.0),1.0) |
! |
| 92 |
zfice = zfice**nexpo |
! Calculer l'epaisseur optique et l'emmissivite des nuages |
| 93 |
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! |
| 94 |
IF (ok_aie) THEN |
DO k = 1, klev |
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! Formula "D" of Boucher and Lohmann, Tellus, 1995 |
DO i = 1, klon |
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! |
rad_chaud = rad_chau1 |
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cdnc(i,k) = 10.**(bl95_b0+bl95_b1* & |
IF (k.LE.3) rad_chaud = rad_chau2 |
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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 |
pclc(i,k) = MAX(pclc(i,k), seuil_neb) |
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! to be within [20, 1000 cm^3] |
zflwp = 1000.*pqlwp(i,k)/RG/pclc(i,k) & |
| 101 |
! |
*(paprs(i,k)-paprs(i,k+1)) |
| 102 |
cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k))) |
zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
| 103 |
cdnc_pi(i,k) = 10.**(bl95_b0+bl95_b1* & |
zfice = MIN(MAX(zfice,0.0),1.0) |
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log(MAX(sulfate_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
zfice = zfice**nexpo |
| 105 |
cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k))) |
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| 106 |
! |
IF (ok_aie) THEN |
| 107 |
! |
! Formula "D" of Boucher and Lohmann, Tellus, 1995 |
| 108 |
! air density: pplay(i,k) / (RD * zT(i,k)) |
! |
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! factor 1.1: derive effective radius from volume-mean radius |
cdnc(i,k) = 10.**(bl95_b0+bl95_b1* & |
| 110 |
! factor 1000 is the water density |
log(MAX(sulfate(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
| 111 |
! _chaud means that this is the CDR for liquid water clouds |
! Cloud droplet number concentration (CDNC) is restricted |
| 112 |
! |
! to be within [20, 1000 cm^3] |
| 113 |
rad_chaud = & |
! |
| 114 |
1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) ) & |
cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k))) |
| 115 |
/ (4./3. * RPI * 1000. * cdnc(i,k)) )**(1./3.) |
cdnc_pi(i,k) = 10.**(bl95_b0+bl95_b1* & |
| 116 |
! |
log(MAX(sulfate_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
| 117 |
! Convert to um. CDR shall be at least 3 um. |
cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k))) |
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! |
! |
| 119 |
rad_chaud = MAX(rad_chaud*1.e6, 3.) |
! |
| 120 |
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! air density: pplay(i,k) / (RD * zT(i,k)) |
| 121 |
! For output diagnostics |
! factor 1.1: derive effective radius from volume-mean radius |
| 122 |
! |
! factor 1000 is the water density |
| 123 |
! Cloud droplet effective radius [um] |
! _chaud means that this is the CDR for liquid water clouds |
| 124 |
! |
! |
| 125 |
! we multiply here with f * xl (fraction of liquid water |
rad_chaud = & |
| 126 |
! clouds in the grid cell) to avoid problems in the |
1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) ) & |
| 127 |
! averaging of the output. |
/ (4./3. * PI * 1000. * cdnc(i,k)) )**(1./3.) |
| 128 |
! In the output of IOIPSL, derive the real cloud droplet |
! |
| 129 |
! effective radius as re/fl |
! Convert to um. CDR shall be at least 3 um. |
| 130 |
! |
! |
| 131 |
fl(i,k) = pclc(i,k)*(1.-zfice) |
rad_chaud = MAX(rad_chaud*1.e6, 3.) |
| 132 |
re(i,k) = rad_chaud*fl(i,k) |
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| 133 |
|
! For output diagnostics |
| 134 |
! Pre-industrial cloud opt thickness |
! |
| 135 |
! |
! Cloud droplet effective radius [um] |
| 136 |
! "radius" is calculated as rad_chaud above (plus the |
! |
| 137 |
! ice cloud contribution) but using cdnc_pi instead of |
! we multiply here with f * xl (fraction of liquid water |
| 138 |
! cdnc. |
! clouds in the grid cell) to avoid problems in the |
| 139 |
radius = MAX(1.1e6 * ( (pqlwp(i,k)*pplay(i,k)/(RD*T(i,k))) & |
! averaging of the output. |
| 140 |
/ (4./3.*RPI*1000.*cdnc_pi(i,k)) )**(1./3.), & |
! In the output of IOIPSL, derive the real cloud droplet |
| 141 |
3.) * (1.-zfice) + rad_froid * zfice |
! effective radius as re/fl |
| 142 |
cldtaupi(i,k) = 3.0/2.0 * zflwp / radius |
! |
| 143 |
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fl(i,k) = pclc(i,k)*(1.-zfice) |
| 144 |
END IF ! ok_aie |
re(i,k) = rad_chaud*fl(i,k) |
| 145 |
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| 146 |
radius = rad_chaud * (1.-zfice) + rad_froid * zfice |
! Pre-industrial cloud opt thickness |
| 147 |
coef = coef_chau * (1.-zfice) + coef_froi * zfice |
! |
| 148 |
pcltau(i,k) = 3.0/2.0 * zflwp / radius |
! "radius" is calculated as rad_chaud above (plus the |
| 149 |
pclemi(i,k) = 1.0 - EXP( - coef * zflwp) |
! ice cloud contribution) but using cdnc_pi instead of |
| 150 |
lo = (pclc(i,k) .LE. seuil_neb) |
! cdnc. |
| 151 |
IF (lo) pclc(i,k) = 0.0 |
radius = MAX(1.1e6 * ( (pqlwp(i,k)*pplay(i,k)/(RD*T(i,k))) & |
| 152 |
IF (lo) pcltau(i,k) = 0.0 |
/ (4./3.*PI*1000.*cdnc_pi(i,k)) )**(1./3.), & |
| 153 |
IF (lo) pclemi(i,k) = 0.0 |
3.) * (1.-zfice) + rad_froid * zfice |
| 154 |
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cldtaupi(i,k) = 3.0/2.0 * zflwp / radius |
| 155 |
IF (.NOT.ok_aie) cldtaupi(i,k)=pcltau(i,k) |
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| 156 |
END DO |
END IF ! ok_aie |
| 157 |
END DO |
|
| 158 |
! |
radius = rad_chaud * (1.-zfice) + rad_froid * zfice |
| 159 |
! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
coef = coef_chau * (1.-zfice) + coef_froi * zfice |
| 160 |
! |
pcltau(i,k) = 3.0/2.0 * zflwp / radius |
| 161 |
DO i = 1, klon |
pclemi(i,k) = 1.0 - EXP( - coef * zflwp) |
| 162 |
pct(i)=1.0 |
lo = (pclc(i,k) .LE. seuil_neb) |
| 163 |
pch(i)=1.0 |
IF (lo) pclc(i,k) = 0.0 |
| 164 |
pcm(i) = 1.0 |
IF (lo) pcltau(i,k) = 0.0 |
| 165 |
pcl(i) = 1.0 |
IF (lo) pclemi(i,k) = 0.0 |
| 166 |
pctlwp(i) = 0.0 |
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| 167 |
END DO |
IF (.NOT.ok_aie) cldtaupi(i,k)=pcltau(i,k) |
| 168 |
! |
END DO |
| 169 |
DO k = klev, 1, -1 |
END DO |
| 170 |
DO i = 1, klon |
! |
| 171 |
pctlwp(i) = pctlwp(i) & |
! COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
| 172 |
+ pqlwp(i,k)*(paprs(i,k)-paprs(i,k+1))/RG |
! |
| 173 |
pct(i) = pct(i)*(1.0-pclc(i,k)) |
DO i = 1, klon |
| 174 |
if (pplay(i,k).LE.cetahb*paprs(i,1)) & |
pct(i)=1.0 |
| 175 |
pch(i) = pch(i)*(1.0-pclc(i,k)) |
pch(i)=1.0 |
| 176 |
if (pplay(i,k).GT.cetahb*paprs(i,1) .AND. & |
pcm(i) = 1.0 |
| 177 |
pplay(i,k).LE.cetamb*paprs(i,1)) & |
pcl(i) = 1.0 |
| 178 |
pcm(i) = pcm(i)*(1.0-pclc(i,k)) |
pctlwp(i) = 0.0 |
| 179 |
if (pplay(i,k).GT.cetamb*paprs(i,1)) & |
END DO |
| 180 |
pcl(i) = pcl(i)*(1.0-pclc(i,k)) |
! |
| 181 |
END DO |
DO k = klev, 1, -1 |
| 182 |
END DO |
DO i = 1, klon |
| 183 |
! |
pctlwp(i) = pctlwp(i) & |
| 184 |
DO i = 1, klon |
+ pqlwp(i,k)*(paprs(i,k)-paprs(i,k+1))/RG |
| 185 |
pct(i)=1.-pct(i) |
pct(i) = pct(i)*(1.0-pclc(i,k)) |
| 186 |
pch(i)=1.-pch(i) |
if (pplay(i,k).LE.cetahb*paprs(i,1)) & |
| 187 |
pcm(i)=1.-pcm(i) |
pch(i) = pch(i)*(1.0-pclc(i,k)) |
| 188 |
pcl(i)=1.-pcl(i) |
if (pplay(i,k).GT.cetahb*paprs(i,1) .AND. & |
| 189 |
END DO |
pplay(i,k).LE.cetamb*paprs(i,1)) & |
| 190 |
! |
pcm(i) = pcm(i)*(1.0-pclc(i,k)) |
| 191 |
END SUBROUTINE nuage |
if (pplay(i,k).GT.cetamb*paprs(i,1)) & |
| 192 |
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pcl(i) = pcl(i)*(1.0-pclc(i,k)) |
| 193 |
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END DO |
| 194 |
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END DO |
| 195 |
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! |
| 196 |
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DO i = 1, klon |
| 197 |
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pct(i)=1.-pct(i) |
| 198 |
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pch(i)=1.-pch(i) |
| 199 |
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pcm(i)=1.-pcm(i) |
| 200 |
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pcl(i)=1.-pcl(i) |
| 201 |
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END DO |
| 202 |
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! |
| 203 |
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END SUBROUTINE nuage |
| 204 |
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| 205 |
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end module nuage_m |
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