1 | ! |
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2 | ! $Header$ |
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3 | ! |
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4 | SUBROUTINE newmicro (paprs, pplay,ok_newmicro, |
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5 | . t, pqlwp, pclc, pcltau, pclemi, |
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6 | . pch, pcl, pcm, pct, pctlwp, |
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7 | s xflwp, xfiwp, xflwc, xfiwc, |
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8 | e ok_aie, |
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9 | e sulfate, sulfate_pi, |
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10 | e bl95_b0, bl95_b1, |
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11 | s cldtaupi, re, fl) |
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12 | USE dimphy |
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13 | IMPLICIT none |
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14 | c====================================================================== |
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15 | c Auteur(s): Z.X. Li (LMD/CNRS) date: 19930910 |
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16 | c Objet: Calculer epaisseur optique et emmissivite des nuages |
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17 | c====================================================================== |
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18 | c Arguments: |
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19 | c t-------input-R-temperature |
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20 | c pqlwp---input-R-eau liquide nuageuse dans l'atmosphere (kg/kg) |
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21 | c pclc----input-R-couverture nuageuse pour le rayonnement (0 a 1) |
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22 | c |
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23 | c ok_aie--input-L-apply aerosol indirect effect or not |
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24 | c sulfate-input-R-sulfate aerosol mass concentration [um/m^3] |
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25 | c sulfate_pi-input-R-dito, pre-industrial value |
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26 | c bl95_b0-input-R-a parameter, may be varied for tests (s-sea, l-land) |
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27 | c bl95_b1-input-R-a parameter, may be varied for tests ( -"- ) |
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28 | c |
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29 | c cldtaupi-output-R-pre-industrial value of cloud optical thickness, |
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30 | c needed for the diagnostics of the aerosol indirect |
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31 | c radiative forcing (see radlwsw) |
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32 | c re------output-R-Cloud droplet effective radius multiplied by fl [um] |
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33 | c fl------output-R-Denominator to re, introduced to avoid problems in |
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34 | c the averaging of the output. fl is the fraction of liquid |
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35 | c water clouds within a grid cell |
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36 | c pcltau--output-R-epaisseur optique des nuages |
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37 | c pclemi--output-R-emissivite des nuages (0 a 1) |
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38 | c====================================================================== |
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39 | C |
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40 | #include "YOMCST.h" |
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41 | c |
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42 | cym#include "dimensions.h" |
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43 | cym#include "dimphy.h" |
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44 | #include "nuage.h" |
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45 | cIM cf. CR: include pour NOVLP et ZEPSEC |
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46 | #include "radepsi.h" |
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47 | #include "radopt.h" |
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48 | REAL paprs(klon,klev+1), pplay(klon,klev) |
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49 | REAL t(klon,klev) |
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50 | c |
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51 | REAL pclc(klon,klev) |
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52 | REAL pqlwp(klon,klev) |
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53 | REAL pcltau(klon,klev), pclemi(klon,klev) |
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54 | c |
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55 | REAL pct(klon), pctlwp(klon), pch(klon), pcl(klon), pcm(klon) |
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56 | c |
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57 | LOGICAL lo |
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58 | c |
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59 | REAL cetahb, cetamb |
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60 | PARAMETER (cetahb = 0.45, cetamb = 0.80) |
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61 | C |
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62 | INTEGER i, k |
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63 | cIM: 091003 REAL zflwp, zradef, zfice, zmsac |
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64 | REAL zflwp(klon), zradef, zfice, zmsac |
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65 | cIM: 091003 rajout |
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66 | REAL xflwp(klon), xfiwp(klon) |
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67 | REAL xflwc(klon,klev), xfiwc(klon,klev) |
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68 | c |
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69 | REAL radius, rad_chaud |
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70 | cc PARAMETER (rad_chau1=13.0, rad_chau2=9.0, rad_froid=35.0) |
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71 | ccc PARAMETER (rad_chaud=15.0, rad_froid=35.0) |
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72 | c sintex initial PARAMETER (rad_chaud=10.0, rad_froid=30.0) |
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73 | REAL coef, coef_froi, coef_chau |
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74 | PARAMETER (coef_chau=0.13, coef_froi=0.09) |
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75 | REAL seuil_neb, t_glace |
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76 | PARAMETER (seuil_neb=0.001, t_glace=273.0-15.0) |
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77 | INTEGER nexpo ! exponentiel pour glace/eau |
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78 | PARAMETER (nexpo=6) |
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79 | ccc PARAMETER (nexpo=1) |
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80 | |
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81 | c -- sb: |
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82 | logical ok_newmicro |
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83 | c parameter (ok_newmicro=.FALSE.) |
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84 | cIM: 091003 real rel, tc, rei, zfiwp |
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85 | real rel, tc, rei, zfiwp(klon) |
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86 | real k_liq, k_ice0, k_ice, DF |
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87 | parameter (k_liq=0.0903, k_ice0=0.005) ! units=m2/g |
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88 | parameter (DF=1.66) ! diffusivity factor |
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89 | c sb -- |
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90 | cjq for the aerosol indirect effect |
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91 | cjq introduced by Johannes Quaas (quaas@lmd.jussieu.fr), 27/11/2003 |
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92 | cjq |
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93 | LOGICAL ok_aie ! Apply AIE or not? |
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94 | LOGICAL ok_a1lwpdep ! a1 LWP dependent? |
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95 | |
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96 | REAL sulfate(klon, klev) ! sulfate aerosol mass concentration [ug m-3] |
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97 | REAL cdnc(klon, klev) ! cloud droplet number concentration [m-3] |
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98 | REAL re(klon, klev) ! cloud droplet effective radius [um] |
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99 | REAL sulfate_pi(klon, klev) ! sulfate aerosol mass concentration [ug m-3] (pre-industrial value) |
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100 | REAL cdnc_pi(klon, klev) ! cloud droplet number concentration [m-3] (pi value) |
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101 | REAL re_pi(klon, klev) ! cloud droplet effective radius [um] (pi value) |
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102 | |
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103 | REAL fl(klon, klev) ! xliq * rneb (denominator to re; fraction of liquid water clouds within the grid cell) |
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104 | |
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105 | REAL bl95_b0, bl95_b1 ! Parameter in B&L 95-Formula |
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106 | |
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107 | REAL cldtaupi(klon, klev) ! pre-industrial cloud opt thickness for diag |
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108 | cjq-end |
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109 | cIM cf. CR:parametres supplementaires |
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110 | REAL zclear(klon) |
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111 | REAL zcloud(klon) |
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112 | |
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113 | c ************************** |
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114 | c * * |
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115 | c * DEBUT PARTIE OPTIMISEE * |
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116 | c * * |
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117 | c ************************** |
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118 | |
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119 | REAL diff_paprs(klon, klev), zfice1, zfice2(klon, klev) |
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120 | REAL rad_chaud_tab(klon, klev), zflwp_var, zfiwp_var |
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121 | |
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122 | c |
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123 | c Calculer l'epaisseur optique et l'emmissivite des nuages |
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124 | c |
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125 | c IM inversion des DO |
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126 | xflwp = 0.d0 |
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127 | xfiwp = 0.d0 |
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128 | xflwc = 0.d0 |
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129 | xfiwc = 0.d0 |
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130 | |
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131 | DO k = 1, klev |
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132 | DO i = 1, klon |
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133 | diff_paprs(i,k) = (paprs(i,k)-paprs(i,k+1))/RG |
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134 | ENDDO |
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135 | ENDDO |
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136 | |
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137 | IF (ok_newmicro) THEN |
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138 | |
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139 | |
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140 | DO k = 1, klev |
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141 | DO i = 1, klon |
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142 | zfice2(i,k) = 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
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143 | zfice2(i,k) = MIN(MAX(zfice2(i,k),0.0),1.0) |
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144 | c IM Total Liquid/Ice water content |
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145 | xflwc(i,k) = (1.-zfice2(i,k))*pqlwp(i,k) |
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146 | xfiwc(i,k) = zfice2(i,k)*pqlwp(i,k) |
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147 | c IM In-Cloud Liquid/Ice water content |
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148 | c xflwc(i,k) = xflwc(i,k)+(1.-zfice)*pqlwp(i,k)/pclc(i,k) |
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149 | c xfiwc(i,k) = xfiwc(i,k)+zfice*pqlwp(i,k)/pclc(i,k) |
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150 | ENDDO |
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151 | ENDDO |
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152 | |
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153 | IF (ok_aie) THEN |
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154 | DO k = 1, klev |
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155 | DO i = 1, klon |
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156 | ! Formula "D" of Boucher and Lohmann, Tellus, 1995 |
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157 | ! |
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158 | cdnc(i,k) = 10.**(bl95_b0+bl95_b1* |
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159 | & log(MAX(sulfate(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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160 | ! Cloud droplet number concentration (CDNC) is restricted |
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161 | ! to be within [20, 1000 cm^3] |
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162 | ! |
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163 | cdnc(i,k)=MIN(1000.e6,MAX(20.e6,cdnc(i,k))) |
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164 | ! |
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165 | ! |
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166 | cdnc_pi(i,k) = 10.**(bl95_b0+bl95_b1* |
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167 | & log(MAX(sulfate_pi(i,k),1.e-4))/log(10.))*1.e6 !-m-3 |
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168 | cdnc_pi(i,k)=MIN(1000.e6,MAX(20.e6,cdnc_pi(i,k))) |
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169 | ENDDO |
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170 | ENDDO |
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171 | DO k = 1, klev |
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172 | DO i = 1, klon |
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173 | ! rad_chaud_tab(i,k) = |
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174 | ! & MAX(1.1e6 |
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175 | ! & *((pqlwp(i,k)*pplay(i,k)/(RD * T(i,k))) |
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176 | ! & /(4./3*RPI*1000.*cdnc(i,k)) )**(1./3.),5.) |
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177 | rad_chaud_tab(i,k) = |
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178 | & 1.1 |
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179 | & *((pqlwp(i,k)*pplay(i,k)/(RD * T(i,k))) |
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180 | & /(4./3*RPI*1000.*cdnc(i,k)) )**(1./3.) |
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181 | rad_chaud_tab(i,k) = MAX(rad_chaud_tab(i,k) * 1e6, 5.) |
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182 | ENDDO |
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183 | ENDDO |
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184 | ELSE |
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185 | DO k = 1, MIN(3,klev) |
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186 | DO i = 1, klon |
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187 | rad_chaud_tab(i,k) = rad_chau2 |
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188 | ENDDO |
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189 | ENDDO |
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190 | DO k = MIN(3,klev)+1, klev |
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191 | DO i = 1, klon |
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192 | rad_chaud_tab(i,k) = rad_chau1 |
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193 | ENDDO |
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194 | ENDDO |
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195 | |
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196 | ENDIF |
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197 | |
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198 | DO k = 1, klev |
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199 | ! IF(.not.ok_aie) THEN |
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200 | rad_chaud = rad_chau1 |
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201 | IF (k.LE.3) rad_chaud = rad_chau2 |
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202 | ! ENDIF |
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203 | DO i = 1, klon |
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204 | IF (pclc(i,k) .LE. seuil_neb) THEN |
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205 | |
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206 | c -- effective cloud droplet radius (microns): |
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207 | |
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208 | c for liquid water clouds: |
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209 | ! For output diagnostics |
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210 | ! |
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211 | ! Cloud droplet effective radius [um] |
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212 | ! |
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213 | ! we multiply here with f * xl (fraction of liquid water |
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214 | ! clouds in the grid cell) to avoid problems in the |
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215 | ! averaging of the output. |
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216 | ! In the output of IOIPSL, derive the real cloud droplet |
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217 | ! effective radius as re/fl |
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218 | ! |
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219 | |
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220 | fl(i,k) = seuil_neb*(1.-zfice2(i,k)) |
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221 | re(i,k) = rad_chaud_tab(i,k)*fl(i,k) |
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222 | |
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223 | pclc(i,k) = 0.0 |
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224 | pcltau(i,k) = 0.0 |
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225 | pclemi(i,k) = 0.0 |
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226 | cldtaupi(i,k) = 0.0 |
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227 | ELSE |
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228 | |
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229 | c -- liquid/ice cloud water paths: |
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230 | |
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231 | zflwp_var= 1000.*(1.-zfice2(i,k))*pqlwp(i,k)/pclc(i,k) |
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232 | & *diff_paprs(i,k) |
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233 | zfiwp_var= 1000.*zfice2(i,k)*pqlwp(i,k)/pclc(i,k) |
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234 | & *diff_paprs(i,k) |
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235 | |
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236 | c -- effective cloud droplet radius (microns): |
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237 | |
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238 | c for liquid water clouds: |
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239 | |
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240 | IF (ok_aie) THEN |
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241 | radius = |
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242 | & 1.1 |
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243 | & *((pqlwp(i,k)*pplay(i,k)/(RD * T(i,k))) |
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244 | & /(4./3.*RPI*1000.*cdnc_pi(i,k)))**(1./3.) |
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245 | radius = MAX(radius*1e6, 5.) |
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246 | |
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247 | tc = t(i,k)-273.15 |
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248 | rei = 0.71*tc + 61.29 |
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249 | if (tc.le.-81.4) rei = 3.5 |
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250 | if (zflwp_var.eq.0.) radius = 1. |
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251 | if (zfiwp_var.eq.0. .or. rei.le.0.) rei = 1. |
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252 | cldtaupi(i,k) = 3.0/2.0 * zflwp_var / radius |
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253 | & + zfiwp_var * (3.448e-03 + 2.431/rei) |
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254 | ENDIF ! ok_aie |
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255 | ! For output diagnostics |
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256 | ! |
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257 | ! Cloud droplet effective radius [um] |
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258 | ! |
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259 | ! we multiply here with f * xl (fraction of liquid water |
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260 | ! clouds in the grid cell) to avoid problems in the |
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261 | ! averaging of the output. |
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262 | ! In the output of IOIPSL, derive the real cloud droplet |
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263 | ! effective radius as re/fl |
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264 | ! |
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265 | |
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266 | fl(i,k) = pclc(i,k)*(1.-zfice2(i,k)) |
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267 | re(i,k) = rad_chaud_tab(i,k)*fl(i,k) |
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268 | |
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269 | rel = rad_chaud_tab(i,k) |
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270 | c for ice clouds: as a function of the ambiant temperature |
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271 | c [formula used by Iacobellis and Somerville (2000), with an |
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272 | c asymptotical value of 3.5 microns at T<-81.4 C added to be |
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273 | c consistent with observations of Heymsfield et al. 1986]: |
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274 | tc = t(i,k)-273.15 |
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275 | rei = 0.71*tc + 61.29 |
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276 | if (tc.le.-81.4) rei = 3.5 |
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277 | c -- cloud optical thickness : |
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278 | |
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279 | c [for liquid clouds, traditional formula, |
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280 | c for ice clouds, Ebert & Curry (1992)] |
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281 | |
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282 | if (zflwp_var.eq.0.) rel = 1. |
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283 | if (zfiwp_var.eq.0. .or. rei.le.0.) rei = 1. |
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284 | pcltau(i,k) = 3.0/2.0 * ( zflwp_var/rel ) |
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285 | & + zfiwp_var * (3.448e-03 + 2.431/rei) |
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286 | c -- cloud infrared emissivity: |
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287 | |
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288 | c [the broadband infrared absorption coefficient is parameterized |
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289 | c as a function of the effective cld droplet radius] |
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290 | |
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291 | c Ebert and Curry (1992) formula as used by Kiehl & Zender (1995): |
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292 | k_ice = k_ice0 + 1.0/rei |
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293 | |
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294 | pclemi(i,k) = 1.0 |
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295 | & - EXP( -coef_chau*zflwp_var - DF*k_ice*zfiwp_var) |
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296 | |
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297 | ENDIF |
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298 | |
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299 | ENDDO |
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300 | ENDDO |
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301 | |
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302 | DO k = 1, klev |
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303 | DO i = 1, klon |
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304 | xflwp(i) = xflwp(i)+ xflwc(i,k) * diff_paprs(i,k) |
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305 | xfiwp(i) = xfiwp(i)+ xfiwc(i,k) * diff_paprs(i,k) |
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306 | ENDDO |
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307 | ENDDO |
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308 | |
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309 | ELSE |
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310 | DO k = 1, klev |
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311 | rad_chaud = rad_chau1 |
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312 | IF (k.LE.3) rad_chaud = rad_chau2 |
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313 | DO i = 1, klon |
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314 | |
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315 | IF (pclc(i,k) .LE. seuil_neb) THEN |
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316 | |
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317 | pclc(i,k) = 0.0 |
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318 | pcltau(i,k) = 0.0 |
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319 | pclemi(i,k) = 0.0 |
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320 | cldtaupi(i,k) = 0.0 |
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321 | |
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322 | ELSE |
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323 | |
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324 | zflwp_var = 1000.*pqlwp(i,k)*diff_paprs(i,k) |
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325 | & /pclc(i,k) |
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326 | |
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327 | zfice1 = MIN( |
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328 | & MAX( 1.0 - (t(i,k)-t_glace) / (273.13-t_glace) |
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329 | & ,0.0),1.0)**nexpo |
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330 | |
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331 | radius = rad_chaud * (1.-zfice1) + rad_froid * zfice1 |
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332 | coef = coef_chau * (1.-zfice1) + coef_froi * zfice1 |
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333 | |
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334 | pcltau(i,k) = 3.0 * zflwp_var / (2.0 * radius) |
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335 | pclemi(i,k) = 1.0 - EXP( - coef * zflwp_var) |
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336 | |
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337 | ENDIF |
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338 | |
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339 | ENDDO |
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340 | ENDDO |
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341 | ENDIF |
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342 | |
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343 | IF (.NOT.ok_aie) THEN |
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344 | DO k = 1, klev |
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345 | DO i = 1, klon |
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346 | cldtaupi(i,k)=pcltau(i,k) |
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347 | ENDDO |
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348 | ENDDO |
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349 | ENDIF |
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350 | |
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351 | ccc DO k = 1, klev |
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352 | ccc DO i = 1, klon |
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353 | ccc t(i,k) = t(i,k) |
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354 | ccc pclc(i,k) = MAX( 1.e-5 , pclc(i,k) ) |
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355 | ccc lo = pclc(i,k) .GT. (2.*1.e-5) |
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356 | ccc zflwp = pqlwp(i,k)*1000.*(paprs(i,k)-paprs(i,k+1)) |
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357 | ccc . /(rg*pclc(i,k)) |
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358 | ccc zradef = 10.0 + (1.-sigs(k))*45.0 |
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359 | ccc pcltau(i,k) = 1.5 * zflwp / zradef |
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360 | ccc zfice=1.0-MIN(MAX((t(i,k)-263.)/(273.-263.),0.0),1.0) |
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361 | ccc zmsac = 0.13*(1.0-zfice) + 0.08*zfice |
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362 | ccc pclemi(i,k) = 1.-EXP(-zmsac*zflwp) |
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363 | ccc if (.NOT.lo) pclc(i,k) = 0.0 |
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364 | ccc if (.NOT.lo) pcltau(i,k) = 0.0 |
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365 | ccc if (.NOT.lo) pclemi(i,k) = 0.0 |
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366 | ccc ENDDO |
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367 | ccc ENDDO |
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368 | ccccc print*, 'pas de nuage dans le rayonnement' |
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369 | ccccc DO k = 1, klev |
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370 | ccccc DO i = 1, klon |
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371 | ccccc pclc(i,k) = 0.0 |
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372 | ccccc pcltau(i,k) = 0.0 |
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373 | ccccc pclemi(i,k) = 0.0 |
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374 | ccccc ENDDO |
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375 | ccccc ENDDO |
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376 | C |
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377 | C COMPUTE CLOUD LIQUID PATH AND TOTAL CLOUDINESS |
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378 | C |
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379 | c IM cf. CR:test: calcul prenant ou non en compte le recouvrement |
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380 | c initialisations |
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381 | DO i=1,klon |
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382 | zclear(i)=1. |
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383 | zcloud(i)=0. |
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384 | pch(i)=1.0 |
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385 | pcm(i) = 1.0 |
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386 | pcl(i) = 1.0 |
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387 | pctlwp(i) = 0.0 |
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388 | ENDDO |
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389 | C |
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390 | cIM cf CR DO k=1,klev |
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391 | DO k = klev, 1, -1 |
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392 | DO i = 1, klon |
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393 | pctlwp(i) = pctlwp(i) |
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394 | & + pqlwp(i,k)*diff_paprs(i,k) |
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395 | ENDDO |
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396 | ENDDO |
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397 | c IM cf. CR |
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398 | IF (NOVLP.EQ.1) THEN |
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399 | DO k = klev, 1, -1 |
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400 | DO i = 1, klon |
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401 | zclear(i)=zclear(i)*(1.-MAX(pclc(i,k),zcloud(i))) |
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402 | & /(1.-MIN(zcloud(i),1.-ZEPSEC)) |
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403 | pct(i)=1.-zclear(i) |
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404 | IF (pplay(i,k).LE.cetahb*paprs(i,1)) THEN |
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405 | pch(i) = pch(i)*(1.-MAX(pclc(i,k),zcloud(i))) |
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406 | & /(1.-MIN(zcloud(i),1.-ZEPSEC)) |
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407 | ELSE IF (pplay(i,k).GT.cetahb*paprs(i,1) .AND. |
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408 | & pplay(i,k).LE.cetamb*paprs(i,1)) THEN |
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409 | pcm(i) = pcm(i)*(1.-MAX(pclc(i,k),zcloud(i))) |
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410 | & /(1.-MIN(zcloud(i),1.-ZEPSEC)) |
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411 | ELSE IF (pplay(i,k).GT.cetamb*paprs(i,1)) THEN |
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412 | pcl(i) = pcl(i)*(1.-MAX(pclc(i,k),zcloud(i))) |
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413 | & /(1.-MIN(zcloud(i),1.-ZEPSEC)) |
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414 | endif |
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415 | zcloud(i)=pclc(i,k) |
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416 | ENDDO |
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417 | ENDDO |
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418 | ELSE IF (NOVLP.EQ.2) THEN |
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419 | DO k = klev, 1, -1 |
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420 | DO i = 1, klon |
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421 | zcloud(i)=MAX(pclc(i,k),zcloud(i)) |
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422 | pct(i)=zcloud(i) |
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423 | IF (pplay(i,k).LE.cetahb*paprs(i,1)) THEN |
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424 | pch(i) = MIN(pclc(i,k),pch(i)) |
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425 | ELSE IF (pplay(i,k).GT.cetahb*paprs(i,1) .AND. |
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426 | & pplay(i,k).LE.cetamb*paprs(i,1)) THEN |
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427 | pcm(i) = MIN(pclc(i,k),pcm(i)) |
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428 | ELSE IF (pplay(i,k).GT.cetamb*paprs(i,1)) THEN |
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429 | pcl(i) = MIN(pclc(i,k),pcl(i)) |
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430 | endif |
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431 | ENDDO |
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432 | ENDDO |
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433 | ELSE IF (NOVLP.EQ.3) THEN |
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434 | DO k = klev, 1, -1 |
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435 | DO i = 1, klon |
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436 | zclear(i)=zclear(i)*(1.-pclc(i,k)) |
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437 | pct(i)=1-zclear(i) |
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438 | IF (pplay(i,k).LE.cetahb*paprs(i,1)) THEN |
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439 | pch(i) = pch(i)*(1.0-pclc(i,k)) |
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440 | ELSE IF (pplay(i,k).GT.cetahb*paprs(i,1) .AND. |
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441 | & pplay(i,k).LE.cetamb*paprs(i,1)) THEN |
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442 | pcm(i) = pcm(i)*(1.0-pclc(i,k)) |
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443 | ELSE IF (pplay(i,k).GT.cetamb*paprs(i,1)) THEN |
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444 | pcl(i) = pcl(i)*(1.0-pclc(i,k)) |
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445 | endif |
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446 | ENDDO |
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447 | ENDDO |
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448 | ENDIF |
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449 | |
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450 | C |
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451 | DO i = 1, klon |
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452 | c IM cf. CR pct(i)=1.-pct(i) |
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453 | pch(i)=1.-pch(i) |
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454 | pcm(i)=1.-pcm(i) |
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455 | pcl(i)=1.-pcl(i) |
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456 | ENDDO |
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457 | |
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458 | C |
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459 | RETURN |
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460 | END |
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