1 | ! $Id: nuage.F 1279 2009-12-10 09:02:56Z asima $ |
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2 | ! |
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3 | SUBROUTINE nuage (paprs, pplay, |
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4 | . t, pqlwp, pclc, pcltau, pclemi, |
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5 | . pch, pcl, pcm, pct, pctlwp, |
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6 | e ok_aie, |
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7 | e mass_solu_aero, mass_solu_aero_pi, |
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8 | e bl95_b0, bl95_b1, |
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9 | s cldtaupi, re, fl) |
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10 | USE dimphy |
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11 | IMPLICIT none |
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12 | c====================================================================== |
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13 | c Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910 |
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14 | c Objet: Calculer epaisseur optique et emmissivite des nuages |
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15 | c====================================================================== |
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16 | c Arguments: |
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17 | c t-------input-R-temperature |
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18 | c pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg) |
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19 | c pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1) |
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20 | c ok_aie--input-L-apply aerosol indirect effect or not |
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21 | c mass_solu_aero-----input-R-total mass concentration for all soluble aerosols[ug/m^3] |
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22 | c mass_solu_aero_pi--input-R-dito, pre-industrial value |
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23 | c bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land) |
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24 | c bl95_b1-input-R-a parameter, may be varied for tests ( -"- ) |
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25 | c |
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26 | c cldtaupi-output-R-pre-industrial value of cloud optical thickness, |
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27 | c needed for the diagnostics of the aerosol indirect |
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28 | c radiative forcing (see radlwsw) |
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29 | c re------output-R-Cloud droplet effective radius multiplied by fl [um] |
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30 | c fl------output-R-Denominator to re, introduced to avoid problems in |
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31 | c the averaging of the output. fl is the fraction of liquid |
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32 | c water clouds within a grid cell |
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33 | c |
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34 | c pcltau--output-R-epaisseur optique des nuages |
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35 | c pclemi--output-R-emissivite des nuages (0 a 1) |
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36 | c====================================================================== |
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37 | C |
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38 | #include "YOMCST.h" |
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39 | c |
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40 | cym#include "dimensions.h" |
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41 | cym#include "dimphy.h" |
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42 | REAL paprs(klon,klev+1), pplay(klon,klev) |
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43 | REAL t(klon,klev) |
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44 | c |
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45 | REAL pclc(klon,klev) |
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46 | REAL pqlwp(klon,klev) |
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47 | REAL pcltau(klon,klev), pclemi(klon,klev) |
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48 | c |
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49 | REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon) |
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50 | c |
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51 | LOGICAL lo |
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52 | c |
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53 | REAL cetahb, cetamb |
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54 | PARAMETER (cetahb = 0.45, cetamb = 0.80) |
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55 | C |
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56 | INTEGER i, k |
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57 | REAL zflwp, zradef, zfice, zmsac |
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58 | c |
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59 | REAL radius, rad_froid, rad_chaud, rad_chau1, rad_chau2 |
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60 | PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0) |
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61 | ccc PARAMETER (rad_chaud=15.0, rad_froid=35.0) |
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62 | c sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0) |
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63 | REAL coef, coef_froi, coef_chau |
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64 | PARAMETER (coef_chau=0.13, coef_froi=0.09) |
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65 | REAL seuil_neb, t_glace |
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66 | PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0) |
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67 | INTEGER nexpo ! exponentiel pour glace/eau |
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68 | PARAMETER (nexpo=6) |
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69 | |
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70 | cjq for the aerosol indirect effect |
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71 | cjq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 |
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72 | cjq |
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73 | LOGICAL ok_aie ! Apply AIE or not? |
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74 | |
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75 | REAL mass_solu_aero(klon, klev) ! total mass concentration for all soluble aerosols[ug m-3] |
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76 | REAL mass_solu_aero_pi(klon, klev) ! - " - pre-industrial value |
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77 | REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] |
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78 | REAL re(klon, klev) ! cloud droplet effective radius [um] |
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79 | REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) |
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80 | REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value) |
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81 | |
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82 | REAL fl(klon, klev) ! xliq * rneb (denominator to re; fraction of liquid water clouds within the grid cell) |
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83 | |
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84 | REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula |
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85 | |
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86 | REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag |
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87 | cjq-end |
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88 | |
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89 | ccc PARAMETER (nexpo=1) |
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90 | c |
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91 | c Calculer l'epaisseur optique et l'emmissivite des nuages |
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92 | c |
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93 | DO k = 1, klev |
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94 | DO i = 1, klon |
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95 | rad_chaud = rad_chau1 |
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96 | IF (k.LE.3) rad_chaud = rad_chau2 |
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97 | |
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98 | pclc(i,k) = MAX(pclc(i,k), seuil_neb) |
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99 | zflwp = 1000.*pqlwp(i,k)/RG/pclc(i,k) |
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100 | . *(paprs(i,k)-paprs(i,k+1)) |
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101 | zfice = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
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102 | zfice = MIN(MAX(zfice,0.0),1.0) |
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103 | zfice = zfice**nexpo |
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104 | |
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105 | IF (ok_aie) THEN |
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106 | ! Formula "D" of Boucher and Lohmann, Tellus, 1995 |
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107 | ! |
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108 | cdnc(i,k) = 10.**(bl95_b0+bl95_b1* |
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109 | . log(MAX(mass_solu_aero(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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110 | ! Cloud droplet number concentration (CDNC) is restricted |
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111 | ! to be within [20, 1000 cm^3] |
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112 | ! |
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113 | cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k))) |
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114 | cdnc_pi(i,k) = 10.**(bl95_b0+bl95_b1* |
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115 | . log(MAX(mass_solu_aero_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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116 | cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k))) |
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117 | ! |
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118 | ! |
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119 | ! air density: pplay(i,k) / (RD * zT(i,k)) |
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120 | ! factor 1.1: derive effective radius from volume-mean radius |
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121 | ! factor 1000 is the water density |
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122 | ! _chaud means that this is the CDR for liquid water clouds |
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123 | ! |
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124 | rad_chaud = |
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125 | . 1.1 * ( (pqlwp(i,k) * pplay(i,k) / (RD * T(i,k)) ) |
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126 | . / (4./3. * RPI * 1000. * cdnc(i,k)) )**(1./3.) |
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127 | ! |
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128 | ! Convert to um. CDR shall be at least 3 um. |
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129 | ! |
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130 | rad_chaud = MAX(rad_chaud*1.e6, 3.) |
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131 | |
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132 | ! For output diagnostics |
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133 | ! |
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134 | ! Cloud droplet effective radius [um] |
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135 | ! |
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136 | ! we multiply here with f * xl (fraction of liquid water |
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137 | ! clouds in the grid cell) to avoid problems in the |
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138 | ! averaging of the output. |
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139 | ! In the output of IOIPSL, derive the real cloud droplet |
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140 | ! effective radius as re/fl |
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141 | ! |
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142 | fl(i,k) = pclc(i,k)*(1.-zfice) |
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143 | re(i,k) = rad_chaud*fl(i,k) |
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144 | |
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145 | ! Pre-industrial cloud opt thickness |
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146 | ! |
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147 | ! "radius" is calculated as rad_chaud above (plus the |
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148 | ! ice cloud contribution) but using cdnc_pi instead of |
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149 | ! cdnc. |
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150 | radius = MAX(1.1e6 * ( (pqlwp(i,k)*pplay(i,k)/(RD*T(i,k))) |
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151 | . / (4./3.*RPI*1000.*cdnc_pi(i,k)) )**(1./3.), |
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152 | . 3.) * (1.-zfice) + rad_froid * zfice |
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153 | cldtaupi(i,k) = 3.0/2.0 * zflwp / radius |
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154 | . |
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155 | ENDIF ! ok_aie |
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156 | |
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157 | radius = rad_chaud * (1.-zfice) + rad_froid * zfice |
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158 | coef = coef_chau * (1.-zfice) + coef_froi * zfice |
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159 | pcltau(i,k) = 3.0/2.0 * zflwp / radius |
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160 | pclemi(i,k) = 1.0 - EXP( - coef * zflwp) |
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161 | lo = (pclc(i,k) .LE. seuil_neb) |
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162 | IF (lo) pclc(i,k) = 0.0 |
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163 | IF (lo) pcltau(i,k) = 0.0 |
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164 | IF (lo) pclemi(i,k) = 0.0 |
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165 | |
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166 | IF (.NOT.ok_aie) cldtaupi(i,k)=pcltau(i,k) |
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167 | ENDDO |
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168 | ENDDO |
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169 | ccc DO k = 1, klev |
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170 | ccc DO i = 1, klon |
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171 | ccc t(i,k) = t(i,k) |
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172 | ccc pclc(i,k) = MAX( 1.e-5 , pclc(i,k) ) |
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173 | ccc lo = pclc(i,k) .GT. (2.*1.e-5) |
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174 | ccc zflwp = pqlwp(i,k)*1000.*(paprs(i,k)-paprs(i,k+1)) |
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175 | ccc . /(rg*pclc(i,k)) |
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176 | ccc zradef = 10.0 + (1.-sigs(k))*45.0 |
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177 | ccc pcltau(i,k) = 1.5 * zflwp / zradef |
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178 | ccc zfice=1.0-MIN(MAX((t(i,k)-263.)/(273.-263.),0.0),1.0) |
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179 | ccc zmsac = 0.13*(1.0-zfice) + 0.08*zfice |
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180 | ccc pclemi(i,k) = 1.-EXP(-zmsac*zflwp) |
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181 | ccc if (.NOT.lo) pclc(i,k) = 0.0 |
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182 | ccc if (.NOT.lo) pcltau(i,k) = 0.0 |
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183 | ccc if (.NOT.lo) pclemi(i,k) = 0.0 |
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184 | ccc ENDDO |
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185 | ccc ENDDO |
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186 | cccccc print*, 'pas de nuage dans le rayonnement' |
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187 | cccccc DO k = 1, klev |
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188 | cccccc DO i = 1, klon |
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189 | cccccc pclc(i,k) = 0.0 |
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190 | cccccc pcltau(i,k) = 0.0 |
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191 | cccccc pclemi(i,k) = 0.0 |
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192 | cccccc ENDDO |
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193 | cccccc ENDDO |
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194 | C |
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195 | C COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
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196 | C |
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197 | DO i = 1, klon |
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198 | pct(i)=1.0 |
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199 | pch(i)=1.0 |
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200 | pcm(i) = 1.0 |
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201 | pcl(i) = 1.0 |
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202 | pctlwp(i) = 0.0 |
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203 | ENDDO |
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204 | C |
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205 | DO k = klev, 1, -1 |
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206 | DO i = 1, klon |
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207 | pctlwp(i) = pctlwp(i) |
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208 | . + pqlwp(i,k)*(paprs(i,k)-paprs(i,k+1))/RG |
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209 | pct(i) = pct(i)*(1.0-pclc(i,k)) |
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210 | if (pplay(i,k).LE.cetahb*paprs(i,1)) |
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211 | . pch(i) = pch(i)*(1.0-pclc(i,k)) |
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212 | if (pplay(i,k).GT.cetahb*paprs(i,1) .AND. |
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213 | . pplay(i,k).LE.cetamb*paprs(i,1)) |
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214 | . pcm(i) = pcm(i)*(1.0-pclc(i,k)) |
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215 | if (pplay(i,k).GT.cetamb*paprs(i,1)) |
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216 | . pcl(i) = pcl(i)*(1.0-pclc(i,k)) |
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217 | ENDDO |
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218 | ENDDO |
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219 | C |
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220 | DO i = 1, klon |
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221 | pct(i)=1.-pct(i) |
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222 | pch(i)=1.-pch(i) |
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223 | pcm(i)=1.-pcm(i) |
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224 | pcl(i)=1.-pcl(i) |
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225 | ENDDO |
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226 | C |
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227 | RETURN |
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228 | END |
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229 | SUBROUTINE diagcld1(paprs,pplay,rain,snow,kbot,ktop, |
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230 | . diafra,dialiq) |
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231 | use dimphy |
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232 | IMPLICIT none |
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233 | c |
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234 | c Laurent Li (LMD/CNRS), le 12 octobre 1998 |
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235 | c (adaptation du code ECMWF) |
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236 | c |
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237 | c Dans certains cas, le schema pronostique des nuages n'est |
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238 | c pas suffisament performant. On a donc besoin de diagnostiquer |
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239 | c ces nuages. Je dois avouer que c'est une frustration. |
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240 | c |
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241 | cym#include "dimensions.h" |
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242 | cym#include "dimphy.h" |
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243 | #include "YOMCST.h" |
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244 | c |
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245 | c Arguments d'entree: |
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246 | REAL paprs(klon,klev+1) ! pression (Pa) a inter-couche |
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247 | REAL pplay(klon,klev) ! pression (Pa) au milieu de couche |
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248 | REAL t(klon,klev) ! temperature (K) |
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249 | REAL q(klon,klev) ! humidite specifique (Kg/Kg) |
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250 | REAL rain(klon) ! pluie convective (kg/m2/s) |
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251 | REAL snow(klon) ! neige convective (kg/m2/s) |
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252 | INTEGER ktop(klon) ! sommet de la convection |
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253 | INTEGER kbot(klon) ! bas de la convection |
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254 | c |
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255 | c Arguments de sortie: |
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256 | REAL diafra(klon,klev) ! fraction nuageuse diagnostiquee |
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257 | REAL dialiq(klon,klev) ! eau liquide nuageuse |
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258 | c |
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259 | c Constantes ajustables: |
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260 | REAL CANVA, CANVB, CANVH |
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261 | PARAMETER (CANVA=2.0, CANVB=0.3, CANVH=0.4) |
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262 | REAL CCA, CCB, CCC |
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263 | PARAMETER (CCA=0.125, CCB=1.5, CCC=0.8) |
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264 | REAL CCFCT, CCSCAL |
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265 | PARAMETER (CCFCT=0.400) |
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266 | PARAMETER (CCSCAL=1.0E+11) |
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267 | REAL CETAHB, CETAMB |
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268 | PARAMETER (CETAHB=0.45, CETAMB=0.80) |
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269 | REAL CCLWMR |
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270 | PARAMETER (CCLWMR=1.E-04) |
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271 | REAL ZEPSCR |
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272 | PARAMETER (ZEPSCR=1.0E-10) |
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273 | c |
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274 | c Variables locales: |
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275 | INTEGER i, k |
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276 | REAL zcc(klon) |
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277 | c |
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278 | c Initialisation: |
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279 | c |
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280 | DO k = 1, klev |
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281 | DO i = 1, klon |
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282 | diafra(i,k) = 0.0 |
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283 | dialiq(i,k) = 0.0 |
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284 | ENDDO |
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285 | ENDDO |
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286 | c |
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287 | DO i = 1, klon ! Calculer la fraction nuageuse |
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288 | zcc(i) = 0.0 |
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289 | IF((rain(i)+snow(i)).GT.0.) THEN |
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290 | zcc(i)= CCA * LOG(MAX(ZEPSCR,(rain(i)+snow(i))*CCSCAL))-CCB |
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291 | zcc(i)= MIN(CCC,MAX(0.0,zcc(i))) |
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292 | ENDIF |
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293 | ENDDO |
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294 | c |
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295 | DO i = 1, klon ! pour traiter les enclumes |
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296 | diafra(i,ktop(i)) = MAX(diafra(i,ktop(i)),zcc(i)*CCFCT) |
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297 | IF ((zcc(i).GE.CANVH) .AND. |
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298 | . (pplay(i,ktop(i)).LE.CETAHB*paprs(i,1))) |
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299 | . diafra(i,ktop(i)) = MAX(diafra(i,ktop(i)), |
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300 | . MAX(zcc(i)*CCFCT,CANVA*(zcc(i)-CANVB))) |
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301 | dialiq(i,ktop(i))=CCLWMR*diafra(i,ktop(i)) |
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302 | ENDDO |
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303 | c |
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304 | DO k = 1, klev ! nuages convectifs (sauf enclumes) |
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305 | DO i = 1, klon |
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306 | IF (k.LT.ktop(i) .AND. k.GE.kbot(i)) THEN |
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307 | diafra(i,k)=MAX(diafra(i,k),zcc(i)*CCFCT) |
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308 | dialiq(i,k)=CCLWMR*diafra(i,k) |
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309 | ENDIF |
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310 | ENDDO |
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311 | ENDDO |
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312 | c |
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313 | RETURN |
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314 | END |
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315 | SUBROUTINE diagcld2(paprs,pplay,t,q, diafra,dialiq) |
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316 | use dimphy |
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317 | IMPLICIT none |
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318 | c |
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319 | cym#include "dimensions.h" |
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320 | cym#include "dimphy.h" |
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321 | #include "YOMCST.h" |
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322 | c |
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323 | c Arguments d'entree: |
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324 | REAL paprs(klon,klev+1) ! pression (Pa) a inter-couche |
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325 | REAL pplay(klon,klev) ! pression (Pa) au milieu de couche |
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326 | REAL t(klon,klev) ! temperature (K) |
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327 | REAL q(klon,klev) ! humidite specifique (Kg/Kg) |
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328 | c |
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329 | c Arguments de sortie: |
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330 | REAL diafra(klon,klev) ! fraction nuageuse diagnostiquee |
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331 | REAL dialiq(klon,klev) ! eau liquide nuageuse |
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332 | c |
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333 | REAL CETAMB |
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334 | PARAMETER (CETAMB=0.80) |
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335 | REAL CLOIA, CLOIB, CLOIC, CLOID |
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336 | PARAMETER (CLOIA=1.0E+02, CLOIB=-10.00, CLOIC=-0.6, CLOID=5.0) |
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337 | ccc PARAMETER (CLOIA=1.0E+02, CLOIB=-10.00, CLOIC=-0.9, CLOID=5.0) |
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338 | REAL RGAMMAS |
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339 | PARAMETER (RGAMMAS=0.05) |
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340 | REAL CRHL |
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341 | PARAMETER (CRHL=0.15) |
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342 | ccc PARAMETER (CRHL=0.70) |
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343 | REAL t_coup |
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344 | PARAMETER (t_coup=234.0) |
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345 | c |
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346 | c Variables locales: |
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347 | INTEGER i, k, kb, invb(klon) |
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348 | REAL zqs, zrhb, zcll, zdthmin(klon), zdthdp |
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349 | REAL zdelta, zcor |
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350 | c |
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351 | c Fonctions thermodynamiques: |
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352 | #include "YOETHF.h" |
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353 | #include "FCTTRE.h" |
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354 | c |
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355 | c Initialisation: |
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356 | c |
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357 | DO k = 1, klev |
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358 | DO i = 1, klon |
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359 | diafra(i,k) = 0.0 |
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360 | dialiq(i,k) = 0.0 |
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361 | ENDDO |
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362 | ENDDO |
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363 | c |
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364 | DO i = 1, klon |
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365 | invb(i) = klev |
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366 | zdthmin(i)=0.0 |
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367 | ENDDO |
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368 | |
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369 | DO k = 2, klev/2-1 |
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370 | DO i = 1, klon |
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371 | zdthdp = (t(i,k)-t(i,k+1))/(pplay(i,k)-pplay(i,k+1)) |
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372 | . - RD * 0.5*(t(i,k)+t(i,k+1))/RCPD/paprs(i,k+1) |
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373 | zdthdp = zdthdp * CLOIA |
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374 | IF (pplay(i,k).GT.CETAMB*paprs(i,1) .AND. |
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375 | . zdthdp.LT.zdthmin(i) ) THEN |
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376 | zdthmin(i) = zdthdp |
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377 | invb(i) = k |
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378 | ENDIF |
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379 | ENDDO |
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380 | ENDDO |
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381 | |
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382 | DO i = 1, klon |
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383 | kb=invb(i) |
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384 | IF (thermcep) THEN |
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385 | zdelta=MAX(0.,SIGN(1.,RTT-t(i,kb))) |
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386 | zqs= R2ES*FOEEW(t(i,kb),zdelta)/pplay(i,kb) |
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387 | zqs=MIN(0.5,zqs) |
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388 | zcor=1./(1.-RETV*zqs) |
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389 | zqs=zqs*zcor |
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390 | ELSE |
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391 | IF (t(i,kb) .LT. t_coup) THEN |
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392 | zqs = qsats(t(i,kb)) / pplay(i,kb) |
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393 | ELSE |
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394 | zqs = qsatl(t(i,kb)) / pplay(i,kb) |
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395 | ENDIF |
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396 | ENDIF |
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397 | zcll = CLOIB * zdthmin(i) + CLOIC |
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398 | zcll = MIN(1.0,MAX(0.0,zcll)) |
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399 | zrhb= q(i,kb)/zqs |
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400 | IF (zcll.GT.0.0.AND.zrhb.LT.CRHL) |
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401 | . zcll=zcll*(1.-(CRHL-zrhb)*CLOID) |
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402 | zcll=MIN(1.0,MAX(0.0,zcll)) |
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403 | diafra(i,kb) = MAX(diafra(i,kb),zcll) |
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404 | dialiq(i,kb)= diafra(i,kb) * RGAMMAS*zqs |
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405 | ENDDO |
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406 | c |
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407 | RETURN |
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408 | END |
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