1 | subroutine totalcloudfrac(ngrid,nq,rneb,totalrneb,pplev,pq,tau) |
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2 | |
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3 | use watercommon_h |
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4 | use comdiurn_h |
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5 | USE comgeomfi_h |
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6 | USE tracer_h, only: igcm_h2o_ice |
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7 | implicit none |
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8 | |
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9 | !================================================================== |
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10 | ! |
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11 | ! Purpose |
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12 | ! ------- |
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13 | ! Calculates the total cloud fraction |
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14 | ! |
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15 | ! Authors |
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16 | ! ------- |
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17 | ! Adapted from the LMDTERRE code by B Charnay (2010) |
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18 | ! |
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19 | !================================================================== |
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20 | |
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21 | !----------------------------------------------------------------------- |
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22 | ! INCLUDE 'dimensions.h' |
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23 | ! |
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24 | ! dimensions.h contient les dimensions du modele |
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25 | ! ndm est tel que iim=2**ndm |
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26 | !----------------------------------------------------------------------- |
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27 | |
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28 | INTEGER iim,jjm,llm,ndm |
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29 | |
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30 | PARAMETER (iim= 128,jjm=96,llm=64,ndm=1) |
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31 | |
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32 | !----------------------------------------------------------------------- |
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33 | !----------------------------------------------------------------------- |
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34 | ! INCLUDE 'dimphys.h' |
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35 | |
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36 | ! ngridmx : number of horizontal grid points |
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37 | ! note: the -1/jjm term will be 0; unless jj=1 |
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38 | integer, parameter :: ngridmx = (2+(jjm-1)*iim - 1/jjm) |
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39 | ! nlayermx : number of atmospheric layers |
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40 | integer, parameter :: nlayermx = llm |
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41 | ! nsoilmx : number of subterranean layers ! nsoilmx is now in comsoil_h |
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42 | !integer, parameter :: nsoilmx = 4 ! for a test |
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43 | !integer, parameter :: nsoilmx = 18 ! for z1=0.0002 m, depth = 18 m => mars case |
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44 | !integer, parameter :: nsoilmx = 13 ! for z1=0.03 m, depth = 104.8 m => earth case |
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45 | !----------------------------------------------------------------------- |
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46 | |
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47 | !----------------------------------------------------------------------- |
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48 | ! INCLUDE "comcstfi.h" |
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49 | |
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50 | common/comcstfi/pi,rad,g,r,cpp,rcp,dtphys,daysec,mugaz,omeg |
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51 | common/comcstfi/avocado!,molrad,visc |
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52 | |
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53 | real pi,rad,g,r,cpp,rcp,dtphys,daysec,mugaz,omeg |
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54 | real avocado!,molrad,visc |
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55 | |
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56 | ! |
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57 | ! For Fortran 77/Fortran 90 compliance always use line continuation |
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58 | ! symbols '&' in columns 73 and 6 |
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59 | ! |
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60 | ! Group commons according to their type for minimal performance impact |
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61 | |
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62 | COMMON/callkeys_l/callrad,corrk,calldifv,UseTurbDiff,calladj & |
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63 | & , co2cond,callsoil & |
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64 | & , season,diurnal,tlocked,rings_shadow,lwrite & |
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65 | & , callstats,calleofdump & |
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66 | & , enertest & |
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67 | & , callgasvis,continuum,H2Ocont_simple,graybody & |
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68 | & , radfixed & |
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69 | & , meanOLR, specOLR & |
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70 | & , kastprof & |
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71 | & , nosurf, oblate & |
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72 | & , newtonian, testradtimes & |
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73 | & , check_cpp_match, force_cpp & |
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74 | & , rayleigh & |
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75 | & , stelbbody & |
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76 | & , nearco2cond & |
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77 | & , tracer, mass_redistrib, varactive, varfixed & |
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78 | & , sedimentation,water,watercond,waterrain & |
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79 | & , aeroco2,aeroh2o,aeroh2so4,aeroback2lay & |
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80 | & , aerofixco2,aerofixh2o & |
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81 | & , hydrology, sourceevol & |
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82 | & , CLFvarying & |
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83 | & , strictboundcorrk & |
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84 | & , ok_slab_ocean & |
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85 | & , ok_slab_sic & |
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86 | & , ok_slab_heat_transp |
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87 | |
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88 | |
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89 | COMMON/callkeys_i/iaervar,iddist,iradia,startype |
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90 | |
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91 | COMMON/callkeys_r/topdustref,Nmix_co2,dusttau,Fat1AU,stelTbb, & |
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92 | & Tstrat,tplanet,obs_tau_col_tropo, & |
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93 | & obs_tau_col_strato,pres_bottom_tropo, & |
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94 | & pres_top_tropo,pres_bottom_strato, & |
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95 | & pres_top_strato,size_tropo,size_strato,satval, & |
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96 | & CLFfixval,n2mixratio,co2supsat,pceil,albedosnow,& |
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97 | & maxicethick,Tsaldiff,tau_relax,cloudlvl, & |
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98 | & icetstep,intheat,flatten,Rmean,J2,MassPlanet |
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99 | |
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100 | logical callrad,corrk,calldifv,UseTurbDiff & |
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101 | & , calladj,co2cond,callsoil & |
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102 | & , season,diurnal,tlocked,rings_shadow,lwrite & |
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103 | & , callstats,calleofdump & |
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104 | & , callgasvis,continuum,H2Ocont_simple,graybody & |
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105 | & , strictboundcorrk |
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106 | |
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107 | logical enertest |
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108 | logical nonideal |
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109 | logical meanOLR |
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110 | logical specOLR |
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111 | logical kastprof |
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112 | logical newtonian |
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113 | logical check_cpp_match |
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114 | logical force_cpp |
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115 | logical testradtimes |
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116 | logical rayleigh |
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117 | logical stelbbody |
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118 | logical ozone |
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119 | logical nearco2cond |
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120 | logical tracer |
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121 | logical mass_redistrib |
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122 | logical varactive |
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123 | logical varfixed |
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124 | logical radfixed |
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125 | logical sedimentation |
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126 | logical water,watercond,waterrain |
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127 | logical aeroco2,aeroh2o,aeroh2so4,aeroback2lay |
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128 | logical aerofixco2,aerofixh2o |
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129 | logical hydrology |
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130 | logical sourceevol |
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131 | logical CLFvarying |
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132 | logical nosurf |
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133 | logical oblate |
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134 | logical ok_slab_ocean |
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135 | logical ok_slab_sic |
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136 | logical ok_slab_heat_transp |
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137 | |
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138 | integer iddist |
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139 | integer iaervar |
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140 | integer iradia |
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141 | integer startype |
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142 | |
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143 | real topdustref |
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144 | real Nmix_co2 |
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145 | real dusttau |
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146 | real Fat1AU |
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147 | real stelTbb |
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148 | real Tstrat |
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149 | real tplanet |
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150 | real obs_tau_col_tropo |
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151 | real obs_tau_col_strato |
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152 | real pres_bottom_tropo |
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153 | real pres_top_tropo |
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154 | real pres_bottom_strato |
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155 | real pres_top_strato |
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156 | real size_tropo |
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157 | real size_strato |
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158 | real satval |
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159 | real CLFfixval |
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160 | real n2mixratio |
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161 | real co2supsat |
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162 | real pceil |
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163 | real albedosnow |
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164 | real maxicethick |
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165 | real Tsaldiff |
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166 | real tau_relax |
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167 | real cloudlvl |
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168 | real icetstep |
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169 | real intheat |
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170 | real flatten |
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171 | real Rmean |
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172 | real J2 |
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173 | real MassPlanet |
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174 | |
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175 | integer,intent(in) :: ngrid ! number of atmospheric columns |
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176 | integer,intent(in) :: nq ! number of tracers |
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177 | real,intent(in) :: rneb(ngrid,nlayermx) ! cloud fraction |
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178 | real,intent(out) :: totalrneb(ngrid) ! total cloud fraction |
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179 | real,intent(in) :: pplev(ngrid,nlayermx+1) ! inter-layer pressure (Pa) |
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180 | real,intent(in) :: pq(ngrid,nlayermx,nq) ! tracers (.../kg_of_air) |
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181 | real,intent(in) :: tau(ngrid,nlayermx) |
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182 | |
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183 | real, dimension(nlayermx+1) :: masse |
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184 | integer, parameter :: recovery=7 |
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185 | integer ltau_max |
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186 | real massetot |
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187 | |
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188 | ! hypothesis behind recovery. value: |
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189 | ! 1 = random recovery |
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190 | ! 2 = maximal recovery |
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191 | ! 3 = minimal recovery |
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192 | ! 4 = fixed recovery |
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193 | ! 5 = recovery on the thicker layer |
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194 | ! Local variables |
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195 | integer ig, l |
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196 | real clear,tau_min |
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197 | real, parameter :: tau_c=0.1 !threshold of optical depth for the calculation of total cloud fraction |
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198 | real rneb2(nlayermx) |
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199 | |
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200 | |
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201 | do ig=1,ngrid |
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202 | totalrneb(ig) = 0. |
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203 | |
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204 | if (recovery.eq.1) then |
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205 | clear = (1.-rneb(ig,1)) |
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206 | do l=2,nlayermx |
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207 | clear = clear*(1.-rneb(ig,l)) |
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208 | enddo |
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209 | totalrneb(ig) = 1.-clear |
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210 | |
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211 | elseif (recovery.eq.2) then |
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212 | totalrneb(ig) = rneb(ig,1) |
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213 | do l=2,14 !nlayermx |
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214 | totalrneb(ig) = max(rneb(ig,l),totalrneb(ig)) |
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215 | enddo |
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216 | |
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217 | elseif (recovery.eq.3) then |
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218 | totalrneb(ig) = rneb(ig,1) |
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219 | do l=2,nlayermx |
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220 | totalrneb(ig) = min(rneb(ig,l),totalrneb(ig)) |
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221 | enddo |
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222 | |
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223 | elseif (recovery.eq.4) then |
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224 | totalrneb(ig) = CLFfixval |
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225 | |
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226 | elseif (recovery.eq.5) then |
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227 | totalrneb(ig) = rneb(ig,1) |
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228 | do l=1,nlayermx |
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229 | masse(l)=pq(ig,l,igcm_h2o_ice)*(pplev(ig,l)-pplev(ig,l+1)) |
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230 | enddo |
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231 | ltau_max=maxloc(masse,dim=1) |
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232 | totalrneb(ig) = rneb(ig,ltau_max) |
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233 | |
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234 | elseif (recovery.eq.6) then |
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235 | totalrneb(ig) = 0. |
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236 | do l=1,nlayermx |
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237 | masse(l)=pq(ig,l,igcm_h2o_ice)*(pplev(ig,l)-pplev(ig,l+1)) |
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238 | masse(l)=max(masse(l),0.) |
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239 | enddo |
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240 | massetot=sum(masse,dim=1) |
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241 | do l=1,nlayermx |
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242 | totalrneb(ig) = totalrneb(ig)+rneb(ig,l)*masse(l)/massetot |
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243 | enddo |
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244 | |
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245 | elseif (recovery.eq.7) then |
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246 | |
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247 | rneb2(:)=rneb(ig,1:nlayermx) |
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248 | tau_min=MIN(tau_c,MAXVAL(tau(ig,1:nlayermx))/2.) |
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249 | do l=1,nlayermx |
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250 | if(tau(ig,l)<tau_min) rneb2(l)=0. |
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251 | enddo |
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252 | totalrneb(ig)=maxval(rneb2(1:nlayermx)) |
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253 | |
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254 | endif ! (recovery=) |
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255 | |
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256 | totalrneb(ig) = min(1.,totalrneb(ig)) |
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257 | totalrneb(ig) = max(0.,totalrneb(ig)) |
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258 | |
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259 | enddo ! (ig=) |
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260 | |
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261 | |
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262 | end subroutine totalcloudfrac |
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