1 | subroutine hydrol(ngrid,nq,ptimestep,rnat,tsurf, & |
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2 | qsurf,dqsurf,dqs_hyd,pcapcal, & |
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3 | albedo0,albedo,mu0,pdtsurf,pdtsurf_hyd,hice, & |
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4 | pctsrf_sic,sea_ice) |
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5 | |
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6 | use ioipsl_getincom |
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7 | use watercommon_h, only: T_h2O_ice_liq, RLFTT, rhowater, mx_eau_sol |
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8 | USE surfdat_h |
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9 | use comdiurn_h |
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10 | USE comgeomfi_h |
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11 | USE tracer_h |
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12 | use slab_ice_h |
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13 | |
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14 | implicit none |
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15 | |
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16 | !================================================================== |
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17 | ! |
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18 | ! Purpose |
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19 | ! ------- |
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20 | ! Calculate the surface hydrology and albedo changes. |
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21 | ! |
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22 | ! Authors |
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23 | ! ------- |
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24 | ! Adapted from LMDTERRE by B. Charnay (2010). Further |
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25 | ! modifications by R. Wordsworth (2010). |
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26 | ! |
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27 | ! Called by |
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28 | ! --------- |
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29 | ! physiq.F |
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30 | ! |
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31 | ! Calls |
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32 | ! ----- |
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33 | ! none |
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34 | ! |
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35 | ! Notes |
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36 | ! ----- |
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37 | ! rnat is terrain type: 0-ocean; 1-continent |
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38 | ! |
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39 | !================================================================== |
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40 | |
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41 | !----------------------------------------------------------------------- |
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42 | ! INCLUDE 'dimensions.h' |
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43 | ! |
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44 | ! dimensions.h contient les dimensions du modele |
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45 | ! ndm est tel que iim=2**ndm |
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46 | !----------------------------------------------------------------------- |
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47 | |
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48 | INTEGER iim,jjm,llm,ndm |
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49 | |
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50 | PARAMETER (iim= 128,jjm=96,llm=64,ndm=1) |
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51 | |
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52 | !----------------------------------------------------------------------- |
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53 | !----------------------------------------------------------------------- |
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54 | ! INCLUDE 'dimphys.h' |
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55 | |
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56 | ! ngridmx : number of horizontal grid points |
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57 | ! note: the -1/jjm term will be 0; unless jj=1 |
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58 | integer, parameter :: ngridmx = (2+(jjm-1)*iim - 1/jjm) |
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59 | ! nlayermx : number of atmospheric layers |
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60 | integer, parameter :: nlayermx = llm |
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61 | ! nsoilmx : number of subterranean layers ! nsoilmx is now in comsoil_h |
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62 | !integer, parameter :: nsoilmx = 4 ! for a test |
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63 | !integer, parameter :: nsoilmx = 18 ! for z1=0.0002 m, depth = 18 m => mars case |
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64 | !integer, parameter :: nsoilmx = 13 ! for z1=0.03 m, depth = 104.8 m => earth case |
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65 | !----------------------------------------------------------------------- |
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66 | |
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67 | !----------------------------------------------------------------------- |
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68 | ! INCLUDE "comcstfi.h" |
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69 | |
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70 | common/comcstfi/pi,rad,g,r,cpp,rcp,dtphys,daysec,mugaz,omeg |
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71 | common/comcstfi/avocado!,molrad,visc |
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72 | |
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73 | real pi,rad,g,r,cpp,rcp,dtphys,daysec,mugaz,omeg |
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74 | real avocado!,molrad,visc |
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75 | |
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76 | ! |
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77 | ! For Fortran 77/Fortran 90 compliance always use line continuation |
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78 | ! symbols '&' in columns 73 and 6 |
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79 | ! |
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80 | ! Group commons according to their type for minimal performance impact |
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81 | |
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82 | COMMON/callkeys_l/callrad,corrk,calldifv,UseTurbDiff,calladj & |
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83 | & , co2cond,callsoil & |
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84 | & , season,diurnal,tlocked,rings_shadow,lwrite & |
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85 | & , callstats,calleofdump & |
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86 | & , enertest & |
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87 | & , callgasvis,continuum,H2Ocont_simple,graybody & |
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88 | & , radfixed & |
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89 | & , meanOLR, specOLR & |
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90 | & , kastprof & |
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91 | & , nosurf, oblate & |
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92 | & , newtonian, testradtimes & |
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93 | & , check_cpp_match, force_cpp & |
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94 | & , rayleigh & |
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95 | & , stelbbody & |
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96 | & , nearco2cond & |
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97 | & , tracer, mass_redistrib, varactive, varfixed & |
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98 | & , sedimentation,water,watercond,waterrain & |
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99 | & , aeroco2,aeroh2o,aeroh2so4,aeroback2lay & |
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100 | & , aerofixco2,aerofixh2o & |
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101 | & , hydrology, sourceevol & |
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102 | & , CLFvarying & |
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103 | & , strictboundcorrk & |
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104 | & , ok_slab_ocean & |
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105 | & , ok_slab_sic & |
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106 | & , ok_slab_heat_transp |
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107 | |
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108 | |
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109 | COMMON/callkeys_i/iaervar,iddist,iradia,startype |
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110 | |
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111 | COMMON/callkeys_r/topdustref,Nmix_co2,dusttau,Fat1AU,stelTbb, & |
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112 | & Tstrat,tplanet,obs_tau_col_tropo, & |
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113 | & obs_tau_col_strato,pres_bottom_tropo, & |
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114 | & pres_top_tropo,pres_bottom_strato, & |
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115 | & pres_top_strato,size_tropo,size_strato,satval, & |
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116 | & CLFfixval,n2mixratio,co2supsat,pceil,albedosnow,& |
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117 | & maxicethick,Tsaldiff,tau_relax,cloudlvl, & |
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118 | & icetstep,intheat,flatten,Rmean,J2,MassPlanet |
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119 | |
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120 | logical callrad,corrk,calldifv,UseTurbDiff & |
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121 | & , calladj,co2cond,callsoil & |
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122 | & , season,diurnal,tlocked,rings_shadow,lwrite & |
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123 | & , callstats,calleofdump & |
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124 | & , callgasvis,continuum,H2Ocont_simple,graybody & |
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125 | & , strictboundcorrk |
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126 | |
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127 | logical enertest |
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128 | logical nonideal |
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129 | logical meanOLR |
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130 | logical specOLR |
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131 | logical kastprof |
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132 | logical newtonian |
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133 | logical check_cpp_match |
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134 | logical force_cpp |
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135 | logical testradtimes |
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136 | logical rayleigh |
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137 | logical stelbbody |
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138 | logical ozone |
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139 | logical nearco2cond |
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140 | logical tracer |
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141 | logical mass_redistrib |
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142 | logical varactive |
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143 | logical varfixed |
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144 | logical radfixed |
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145 | logical sedimentation |
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146 | logical water,watercond,waterrain |
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147 | logical aeroco2,aeroh2o,aeroh2so4,aeroback2lay |
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148 | logical aerofixco2,aerofixh2o |
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149 | logical hydrology |
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150 | logical sourceevol |
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151 | logical CLFvarying |
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152 | logical nosurf |
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153 | logical oblate |
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154 | logical ok_slab_ocean |
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155 | logical ok_slab_sic |
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156 | logical ok_slab_heat_transp |
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157 | |
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158 | integer iddist |
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159 | integer iaervar |
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160 | integer iradia |
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161 | integer startype |
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162 | |
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163 | real topdustref |
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164 | real Nmix_co2 |
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165 | real dusttau |
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166 | real Fat1AU |
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167 | real stelTbb |
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168 | real Tstrat |
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169 | real tplanet |
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170 | real obs_tau_col_tropo |
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171 | real obs_tau_col_strato |
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172 | real pres_bottom_tropo |
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173 | real pres_top_tropo |
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174 | real pres_bottom_strato |
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175 | real pres_top_strato |
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176 | real size_tropo |
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177 | real size_strato |
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178 | real satval |
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179 | real CLFfixval |
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180 | real n2mixratio |
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181 | real co2supsat |
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182 | real pceil |
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183 | real albedosnow |
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184 | real maxicethick |
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185 | real Tsaldiff |
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186 | real tau_relax |
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187 | real cloudlvl |
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188 | real icetstep |
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189 | real intheat |
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190 | real flatten |
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191 | real Rmean |
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192 | real J2 |
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193 | real MassPlanet |
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194 | |
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195 | integer ngrid,nq |
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196 | |
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197 | ! Inputs |
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198 | ! ------ |
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199 | real albedoice |
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200 | save albedoice |
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201 | |
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202 | real snowlayer |
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203 | parameter (snowlayer=33.0) ! 33 kg/m^2 of snow, equal to a layer of 3.3 cm |
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204 | real oceantime |
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205 | parameter (oceantime=10*24*3600) |
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206 | |
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207 | logical,save :: oceanbulkavg ! relax ocean temperatures to a GLOBAL mean value? |
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208 | logical,save :: activerunoff ! enable simple runoff scheme? |
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209 | logical,save :: oceanalbvary ! ocean albedo varies with the diurnal cycle? |
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210 | |
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211 | ! Arguments |
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212 | ! --------- |
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213 | real rnat(ngrid) ! I changed this to integer (RW) |
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214 | real,dimension(:),allocatable,save :: runoff |
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215 | real totalrunoff, tsea, oceanarea |
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216 | save oceanarea |
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217 | |
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218 | real ptimestep |
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219 | real mu0(ngrid) |
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220 | real qsurf(ngrid,nq), tsurf(ngrid) |
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221 | real dqsurf(ngrid,nq), pdtsurf(ngrid) |
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222 | real hice(ngrid) |
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223 | real albedo0(ngrid), albedo(ngrid) |
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224 | real pctsrf_sic(ngrid), sea_ice(ngrid) |
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225 | |
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226 | real oceanarea2 |
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227 | |
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228 | ! Output |
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229 | ! ------ |
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230 | real dqs_hyd(ngrid,nq) |
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231 | real pdtsurf_hyd(ngrid) |
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232 | |
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233 | ! Local |
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234 | ! ----- |
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235 | real a,b,E |
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236 | integer ig,iq, icap ! wld like to remove icap |
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237 | real fsnoi, subli, fauxo |
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238 | real twater(ngrid) |
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239 | real pcapcal(ngrid) |
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240 | real hicebis(ngrid) |
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241 | real zqsurf(ngrid,nq) |
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242 | real ztsurf(ngrid) |
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243 | real albedo_sic, alb_ice |
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244 | real zfra |
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245 | |
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246 | integer, save :: ivap, iliq, iice |
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247 | |
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248 | logical, save :: firstcall |
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249 | |
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250 | data firstcall /.true./ |
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251 | |
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252 | |
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253 | if(firstcall)then |
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254 | |
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255 | oceanbulkavg=.false. |
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256 | oceanalbvary=.false. |
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257 | write(*,*)"Activate runnoff into oceans?" |
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258 | activerunoff=.false. |
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259 | call getin("activerunoff",activerunoff) |
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260 | write(*,*)" activerunoff = ",activerunoff |
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261 | |
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262 | |
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263 | |
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264 | if (activerunoff) ALLOCATE(runoff(ngrid)) |
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265 | |
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266 | ivap=igcm_h2o_vap |
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267 | iliq=igcm_h2o_vap |
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268 | iice=igcm_h2o_ice |
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269 | |
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270 | write(*,*) "hydrol: ivap=",ivap |
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271 | write(*,*) " iliq=",iliq |
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272 | write(*,*) " iice=",iice |
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273 | |
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274 | ! Here's the deal: iice is used in place of igcm_h2o_ice both on the |
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275 | ! surface and in the atmosphere. ivap is used in |
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276 | ! place of igcm_h2o_vap ONLY in the atmosphere, while |
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277 | ! iliq is used in place of igcm_h2o_vap ONLY on the |
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278 | ! surface. |
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279 | |
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280 | ! Soon to be extended to the entire water cycle... |
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281 | |
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282 | ! Ice albedo = snow albedo for now |
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283 | albedoice=albedosnow |
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284 | |
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285 | ! Total ocean surface area |
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286 | oceanarea=0. |
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287 | do ig=1,ngrid |
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288 | if(nint(rnat(ig)).eq.0)then |
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289 | oceanarea=oceanarea+area(ig) |
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290 | endif |
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291 | enddo |
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292 | |
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293 | if(oceanbulkavg.and.(oceanarea.le.0.))then |
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294 | print*,'How are we supposed to average the ocean' |
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295 | print*,'temperature, when there are no oceans?' |
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296 | call abort |
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297 | endif |
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298 | |
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299 | if(activerunoff.and.(oceanarea.le.0.))then |
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300 | print*,'You have enabled runoff, but you have no oceans.' |
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301 | print*,'Where did you think the water was going to go?' |
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302 | call abort |
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303 | endif |
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304 | |
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305 | firstcall = .false. |
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306 | endif |
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307 | |
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308 | ! add physical tendencies already calculated |
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309 | ! ------------------------------------------ |
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310 | |
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311 | do ig=1,ngrid |
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312 | ztsurf(ig) = tsurf(ig) + ptimestep*pdtsurf(ig) |
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313 | pdtsurf_hyd(ig)=0.0 |
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314 | do iq=1,nq |
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315 | zqsurf(ig,iq) = qsurf(ig,iq) + ptimestep*dqsurf(ig,iq) |
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316 | enddo |
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317 | enddo |
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318 | |
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319 | do ig=1,ngrid |
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320 | do iq=1,nq |
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321 | dqs_hyd(ig,iq) = 0.0 |
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322 | enddo |
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323 | enddo |
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324 | |
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325 | do ig = 1, ngrid |
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326 | |
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327 | ! Ocean |
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328 | ! ----- |
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329 | if(nint(rnat(ig)).eq.0)then |
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330 | |
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331 | ! re-calculate oceanic albedo |
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332 | ! if(diurnal.and.oceanalbvary)then |
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333 | ! fauxo = ( 1.47 - ACOS( mu0(ig) ) )/0.15 ! where does this come from (Benjamin)? |
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334 | ! albedo(ig) = 1.1*( .03 + .630/( 1. + fauxo*fauxo)) |
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335 | ! albedo(ig) = MAX(MIN(albedo(ig),0.60),0.04) |
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336 | ! else |
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337 | albedo(ig) = alb_ocean ! modif Benjamin |
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338 | ! end if |
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339 | |
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340 | |
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341 | if(ok_slab_ocean) then |
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342 | |
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343 | ! Fraction neige (hauteur critique 45kg/m2~15cm) |
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344 | zfra = MAX(0.0,MIN(1.0,zqsurf(ig,iice)/45.0)) |
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345 | ! Albedo glace |
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346 | alb_ice=alb_ice_max-(alb_ice_max-alb_ice_min) & |
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347 | *exp(-sea_ice(ig)/h_alb_ice) |
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348 | ! Albedo glace+neige |
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349 | albedo_sic= albedosnow*zfra + alb_ice*(1.0-zfra) |
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350 | |
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351 | ! Albedo final |
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352 | albedo(ig) = pctsrf_sic(ig)*albedo_sic + (1.-pctsrf_sic(ig))*alb_ocean |
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353 | ! oceanic ice height, just for diagnostics |
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354 | hice(ig) = MIN(10.,sea_ice(ig)/rhowater) |
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355 | else !ok_slab_ocean |
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356 | |
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357 | |
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358 | ! calculate oceanic ice height including the latent heat of ice formation |
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359 | ! hice is the height of oceanic ice with a maximum of maxicethick. |
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360 | hice(ig) = zqsurf(ig,iice)/rhowater ! update hice to include recent snowfall |
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361 | |
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362 | ! twater(ig) = tsurf(ig) + ptimestep*zdtsurf(ig) & |
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363 | twater(ig) = ztsurf(ig) - hice(ig)*RLFTT*rhowater/pcapcal(ig) |
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364 | ! this is temperature water would have if we melted entire ocean ice layer |
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365 | hicebis(ig) = hice(ig) |
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366 | hice(ig) = 0. |
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367 | |
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368 | if(twater(ig) .lt. T_h2O_ice_liq)then |
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369 | E=min((T_h2O_ice_liq+Tsaldiff-twater(ig))*pcapcal(ig),RLFTT*rhowater*maxicethick) |
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370 | hice(ig) = E/(RLFTT*rhowater) |
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371 | hice(ig) = max(hice(ig),0.0) |
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372 | hice(ig) = min(hice(ig),maxicethick) |
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373 | pdtsurf_hyd(ig) = (hice(ig) - hicebis(ig))*RLFTT*rhowater/pcapcal(ig)/ptimestep |
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374 | albedo(ig) = albedoice |
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375 | |
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376 | ! if (zqsurf(ig,iice).ge.snowlayer) then |
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377 | ! albedo(ig) = albedoice |
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378 | ! else |
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379 | ! albedo(ig) = albedoocean & |
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380 | ! + (albedosnow - albedoocean)*zqsurf(ig,iice)/snowlayer |
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381 | ! endif |
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382 | |
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383 | else |
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384 | |
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385 | pdtsurf_hyd(ig) = -hicebis(ig)*RLFTT*rhowater/pcapcal(ig)/ptimestep |
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386 | albedo(ig) = alb_ocean |
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387 | |
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388 | endif |
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389 | |
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390 | zqsurf(ig,iliq) = zqsurf(ig,iliq)-(hice(ig)*rhowater-zqsurf(ig,iice)) |
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391 | zqsurf(ig,iice) = hice(ig)*rhowater |
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392 | |
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393 | endif!(ok_slab_ocean) |
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394 | |
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395 | |
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396 | ! Continent |
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397 | ! --------- |
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398 | elseif (nint(rnat(ig)).eq.1) then |
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399 | |
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400 | ! melt the snow |
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401 | if(ztsurf(ig).gt.T_h2O_ice_liq)then |
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402 | if(zqsurf(ig,iice).gt.1.0e-8)then |
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403 | |
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404 | a = (ztsurf(ig)-T_h2O_ice_liq)*pcapcal(ig)/RLFTT |
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405 | b = zqsurf(ig,iice) |
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406 | fsnoi = min(a,b) |
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407 | |
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408 | zqsurf(ig,iice) = zqsurf(ig,iice) - fsnoi |
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409 | zqsurf(ig,iliq) = zqsurf(ig,iliq) + fsnoi |
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410 | |
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411 | ! thermal effects |
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412 | pdtsurf_hyd(ig) = -fsnoi*RLFTT/pcapcal(ig)/ptimestep |
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413 | |
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414 | endif |
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415 | else |
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416 | |
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417 | ! freeze the water |
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418 | if(zqsurf(ig,iliq).gt.1.0e-8)then |
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419 | |
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420 | a = -(ztsurf(ig)-T_h2O_ice_liq)*pcapcal(ig)/RLFTT |
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421 | b = zqsurf(ig,iliq) |
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422 | |
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423 | fsnoi = min(a,b) |
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424 | |
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425 | zqsurf(ig,iice) = zqsurf(ig,iice) + fsnoi |
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426 | zqsurf(ig,iliq) = zqsurf(ig,iliq) - fsnoi |
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427 | |
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428 | ! thermal effects |
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429 | pdtsurf_hyd(ig) = +fsnoi*RLFTT/pcapcal(ig)/ptimestep |
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430 | |
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431 | endif |
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432 | endif |
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433 | |
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434 | ! deal with runoff |
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435 | if(activerunoff)then |
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436 | |
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437 | runoff(ig) = max(zqsurf(ig,iliq) - mx_eau_sol, 0.0) |
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438 | if(ngrid.gt.1)then ! runoff only exists in 3D |
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439 | if(runoff(ig).ne.0.0)then |
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440 | zqsurf(ig,iliq) = mx_eau_sol |
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441 | ! runoff is added to ocean at end |
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442 | endif |
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443 | end if |
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444 | |
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445 | endif |
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446 | |
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447 | ! re-calculate continental albedo |
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448 | albedo(ig) = albedo0(ig) ! albedo0 = base values |
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449 | if (zqsurf(ig,iice).ge.snowlayer) then |
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450 | albedo(ig) = albedosnow |
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451 | else |
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452 | albedo(ig) = albedo0(ig) & |
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453 | + (albedosnow - albedo0(ig))*zqsurf(ig,iice)/snowlayer |
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454 | endif |
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455 | |
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456 | else |
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457 | |
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458 | print*,'Surface type not recognised in hydrol.F!' |
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459 | print*,'Exiting...' |
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460 | call abort |
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461 | |
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462 | endif |
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463 | |
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464 | end do ! ig=1,ngrid |
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465 | |
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466 | ! perform crude bulk averaging of temperature in ocean |
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467 | ! ---------------------------------------------------- |
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468 | if(oceanbulkavg)then |
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469 | |
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470 | oceanarea2=0. |
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471 | DO ig=1,ngrid |
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472 | if((nint(rnat(ig)).eq.0).and.(hice(ig).eq.0.))then |
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473 | oceanarea2=oceanarea2+area(ig)*pcapcal(ig) |
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474 | end if |
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475 | END DO |
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476 | |
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477 | tsea=0. |
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478 | DO ig=1,ngrid |
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479 | if((nint(rnat(ig)).eq.0).and.(hice(ig).eq.0.))then |
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480 | tsea=tsea+ztsurf(ig)*area(ig)*pcapcal(ig)/oceanarea2 |
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481 | end if |
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482 | END DO |
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483 | |
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484 | DO ig=1,ngrid |
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485 | if((nint(rnat(ig)).eq.0).and.(hice(ig).eq.0))then |
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486 | pdtsurf_hyd(ig) = pdtsurf_hyd(ig) + (tsea-ztsurf(ig))/oceantime |
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487 | end if |
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488 | END DO |
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489 | |
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490 | print*,'Mean ocean temperature = ',tsea,' K' |
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491 | |
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492 | endif |
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493 | |
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494 | ! shove all the runoff water into the ocean |
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495 | ! ----------------------------------------- |
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496 | if(activerunoff)then |
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497 | |
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498 | totalrunoff=0. |
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499 | do ig=1,ngrid |
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500 | if (nint(rnat(ig)).eq.1) then |
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501 | totalrunoff = totalrunoff + area(ig)*runoff(ig) |
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502 | endif |
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503 | enddo |
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504 | |
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505 | do ig=1,ngrid |
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506 | if (nint(rnat(ig)).eq.0) then |
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507 | zqsurf(ig,iliq) = zqsurf(ig,iliq) + & |
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508 | totalrunoff/oceanarea |
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509 | endif |
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510 | enddo |
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511 | |
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512 | endif |
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513 | |
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514 | |
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515 | ! Re-add the albedo effects of CO2 ice if necessary |
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516 | ! ------------------------------------------------- |
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517 | if(co2cond)then |
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518 | |
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519 | icap=1 |
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520 | do ig=1,ngrid |
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521 | if (qsurf(ig,igcm_co2_ice).gt.0) then |
---|
522 | albedo(ig) = albedice(icap) |
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523 | endif |
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524 | enddo |
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525 | |
---|
526 | endif |
---|
527 | |
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528 | |
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529 | do ig=1,ngrid |
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530 | dqs_hyd(ig,iliq)=(zqsurf(ig,iliq) - qsurf(ig,iliq))/ptimestep |
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531 | dqs_hyd(ig,iice)=(zqsurf(ig,iice) - qsurf(ig,iice))/ptimestep |
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532 | enddo |
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533 | |
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534 | if (activerunoff) then |
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535 | call writediagfi(ngrid,'runoff','Runoff amount',' ',2,runoff) |
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536 | endif |
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537 | |
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538 | return |
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539 | end subroutine hydrol |
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