1 | MODULE updatereffrad_mod |
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2 | |
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3 | IMPLICIT NONE |
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4 | |
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5 | CONTAINS |
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6 | |
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7 | SUBROUTINE updatereffrad(ngrid,nlayer, |
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8 | & rdust,rstormdust,rtopdust,rice,nuice, |
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9 | & reffrad,nueffrad, riceco2, nuiceco2, |
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10 | & pq,tauscaling,tau,pplay, pt) |
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11 | USE updaterad, ONLY: updaterdust, updaterice_micro, |
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12 | & updaterice_microco2, updaterice_typ |
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13 | use tracer_mod, only: nqmx, igcm_dust_mass, igcm_dust_number, |
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14 | & igcm_h2o_ice, igcm_ccn_mass, radius, |
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15 | & igcm_co2_ice, nuiceco2_ref, |
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16 | & igcm_ccnco2_number, igcm_ccnco2_mass, |
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17 | & igcm_ccn_number, nuice_ref, varian, |
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18 | & ref_r0, igcm_dust_submicron, |
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19 | & igcm_stormdust_mass,igcm_stormdust_number, |
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20 | & igcm_topdust_mass,igcm_topdust_number, |
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21 | & rho_ice |
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22 | USE dimradmars_mod, only: nueffdust,naerkind, |
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23 | & name_iaer, |
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24 | & iaer_dust_conrath,iaer_dust_doubleq, |
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25 | & iaer_dust_submicron,iaer_h2o_ice, |
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26 | & iaer_stormdust_doubleq,iaer_topdust_doubleq |
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27 | use dust_param_mod, only: doubleq, active |
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28 | IMPLICIT NONE |
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29 | c======================================================================= |
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30 | c subject: |
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31 | c -------- |
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32 | c Subroutine designed to update the aerosol size distribution used by |
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33 | c the radiative transfer scheme. This size distribution is assumed |
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34 | c to be a log-normal distribution, with effective radius "reffrad" and |
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35 | c variance "nueffrad". |
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36 | c At firstcall, "rice" and "nuice" are not known, because |
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37 | c the H2O ice microphysical scheme is called after the radiative |
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38 | c transfer in physiq.F. That's why we assess the size of the |
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39 | c water-ice particles at firstcall (see part 1.2 below). |
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40 | c |
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41 | c author: |
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42 | c ------ |
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43 | c J.-B. Madeleine (2009-2010) |
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44 | c |
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45 | c======================================================================= |
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46 | c |
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47 | c Declarations : |
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48 | c ------------- |
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49 | c |
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50 | include "callkeys.h" |
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51 | |
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52 | c----------------------------------------------------------------------- |
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53 | c Inputs/outputs: |
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54 | c ------ |
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55 | |
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56 | INTEGER, INTENT(in) :: ngrid,nlayer |
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57 | c Ice geometric mean radius (m) |
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58 | REAL, INTENT(out) :: rice(ngrid,nlayer) |
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59 | c Estimated effective variance of the size distribution (n.u.) |
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60 | REAL, INTENT(out) :: nuice(ngrid,nlayer) |
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61 | c Tracer mass mixing ratio (kg/kg) |
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62 | REAL, INTENT(in) :: pq(ngrid,nlayer,nqmx) |
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63 | REAL, INTENT(out) :: rdust(ngrid,nlayer) ! Dust geometric mean radius (m) |
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64 | REAL, INTENT(out) :: rstormdust(ngrid,nlayer) ! Dust geometric mean radius (m) |
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65 | REAL, INTENT(out) :: rtopdust(ngrid,nlayer) ! Dust geometric mean radius (m) |
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66 | REAL, INTENT(in) :: pplay(ngrid,nlayer) ! altitude at the middle of the layers |
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67 | REAL, INTENT(in) :: tau(ngrid,naerkind) |
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68 | c Aerosol effective radius used for radiative transfer (meter) |
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69 | REAL, INTENT(out) :: reffrad(ngrid,nlayer,naerkind) |
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70 | c Aerosol effective variance used for radiative transfer (n.u.) |
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71 | REAL, INTENT(out) :: nueffrad(ngrid,nlayer,naerkind) |
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72 | REAL, INTENT(in) :: tauscaling(ngrid) ! Convertion factor for qccn and Nccn |
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73 | c CO2 ice mean radius (m) |
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74 | double precision, INTENT(out) :: riceco2(ngrid,nlayer) ! co2 ice radius |
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75 | REAL, INTENT(out) :: nuiceco2(ngrid,nlayer) |
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76 | REAL, INTENT(in) :: pt(ngrid,nlayer) ! temperature |
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77 | |
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78 | c Local variables: |
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79 | c --------------- |
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80 | |
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81 | INTEGER :: ig,l ! 3D grid indices |
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82 | INTEGER :: iaer ! Aerosol index |
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83 | |
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84 | c Number of cloud condensation nuclei near the surface |
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85 | c (only used at firstcall). This value is taken from |
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86 | c Montmessin et al. 2004 JGR 109 E10004 p5 (2E6 part m-3), and |
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87 | c converted to part kg-1 using a typical atmospheric density. |
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88 | |
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89 | REAL, PARAMETER :: ccn0 = 1.3E8 |
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90 | |
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91 | c For microphysics only: |
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92 | REAL Mo,No ! Mass and number of ccn |
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93 | REAL rhocloud(ngrid,nlayer) ! Cloud density (kg.m-3) |
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94 | c For CO2 microphysics only: |
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95 | REAL :: rhocloudco2(ngrid, nlayer) ! co2 cloud density |
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96 | |
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97 | LOGICAL,SAVE :: firstcall=.true. |
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98 | |
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99 | REAL CBRT |
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100 | EXTERNAL CBRT |
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101 | |
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102 | c================================================================== |
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103 | c 1. Update radius from fields from dynamics or initial state |
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104 | c================================================================== |
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105 | |
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106 | c 1.1 Dust particles |
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107 | c ------------------ |
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108 | IF (doubleq.AND.active) THEN |
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109 | DO l=1,nlayer |
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110 | DO ig=1, ngrid |
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111 | call updaterdust(pq(ig,l,igcm_dust_mass), |
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112 | & pq(ig,l,igcm_dust_number),rdust(ig,l)) |
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113 | nueffdust(ig,l) = exp(varian**2.)-1. |
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114 | ENDDO |
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115 | ENDDO |
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116 | ELSE |
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117 | DO l=1,nlayer |
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118 | DO ig=1, ngrid |
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119 | rdust(ig,l) = 0.8E-6 |
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120 | nueffdust(ig,l) = 0.3 |
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121 | ENDDO |
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122 | ENDDO |
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123 | ENDIF |
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124 | |
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125 | ! updating radius of stormdust particles |
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126 | IF (rdstorm.AND.active) THEN |
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127 | DO l=1,nlayer |
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128 | DO ig=1, ngrid |
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129 | call updaterdust(pq(ig,l,igcm_stormdust_mass), |
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130 | & pq(ig,l,igcm_stormdust_number),rstormdust(ig,l)) |
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131 | nueffdust(ig,l) = exp(varian**2.)-1. |
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132 | ENDDO |
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133 | ENDDO |
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134 | ENDIF |
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135 | |
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136 | ! updating radius of topdust particles |
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137 | IF (slpwind.AND.active) THEN |
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138 | DO l=1,nlayer |
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139 | DO ig=1, ngrid |
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140 | call updaterdust(pq(ig,l,igcm_topdust_mass), |
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141 | & pq(ig,l,igcm_topdust_number),rtopdust(ig,l)) |
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142 | nueffdust(ig,l) = exp(varian**2.)-1. |
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143 | ENDDO |
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144 | ENDDO |
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145 | ENDIF |
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146 | |
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147 | c 1.2 Water-ice particles |
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148 | c ----------------------- |
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149 | |
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150 | IF (water.AND.activice) THEN |
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151 | IF (microphys) THEN |
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152 | |
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153 | c At firstcall, the true number and true mass of cloud condensation nuclei are not known. |
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154 | c Indeed it is scaled on the prescribed dust opacity via a 'tauscaling' coefficient |
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155 | c computed after radiative transfer. If tauscaling is not in startfi, we make an assumption for its value. |
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156 | |
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157 | IF (firstcall) THEN |
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158 | !IF (minval(tauscaling).lt.0) tauscaling(:) = 1.e-3 ! default value when non-read in startfi is -1 |
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159 | !IF (freedust) tauscaling(:) = 1. ! if freedust, enforce no rescaling at all |
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160 | firstcall = .false. |
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161 | ENDIF |
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162 | |
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163 | DO l=1,nlayer |
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164 | DO ig=1,ngrid |
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165 | call updaterice_micro(pq(ig,l,igcm_h2o_ice), |
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166 | & pq(ig,l,igcm_ccn_mass), |
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167 | & pq(ig,l,igcm_ccn_number), |
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168 | & tauscaling(ig),rice(ig,l), |
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169 | & rhocloud(ig,l)) |
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170 | nuice(ig,l) = nuice_ref |
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171 | ENDDO |
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172 | ENDDO |
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173 | |
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174 | ELSE ! if not microphys |
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175 | |
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176 | DO l=1,nlayer |
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177 | DO ig=1,ngrid |
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178 | call updaterice_typ(pq(ig,l,igcm_h2o_ice), |
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179 | & tau(ig,1),pplay(ig,l),rice(ig,l)) |
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180 | nuice(ig,l) = nuice_ref |
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181 | ENDDO |
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182 | ENDDO |
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183 | |
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184 | ENDIF ! of if microphys |
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185 | ENDIF ! of if (water.AND.activice) |
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186 | |
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187 | |
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188 | c 1.3 CO2-ice particles |
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189 | |
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190 | IF (co2clouds.AND.activeco2ice) THEN |
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191 | DO l=1,nlayer |
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192 | DO ig=1,ngrid |
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193 | call updaterice_microco2(dble(pq(ig,l,igcm_co2_ice)), |
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194 | & dble(pq(ig,l,igcm_ccnco2_mass)), |
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195 | & dble(pq(ig,l,igcm_ccnco2_number)), |
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196 | & pt(ig,l), |
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197 | & tauscaling(ig),riceco2(ig,l), |
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198 | & rhocloudco2(ig,l)) |
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199 | nuiceco2(ig,l) = nuiceco2_ref |
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200 | END DO |
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201 | ENDDO |
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202 | ENDIF ! of if (co2clouds.AND.activeco2ice) |
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203 | |
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204 | c================================================================== |
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205 | c 2. Radius used in the radiative transfer code (reffrad) |
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206 | c================================================================== |
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207 | |
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208 | DO iaer = 1, naerkind ! Loop on aerosol kind |
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209 | aerkind: SELECT CASE (name_iaer(iaer)) |
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210 | c================================================================== |
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211 | CASE("dust_conrath") aerkind ! Typical dust profile |
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212 | c================================================================== |
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213 | DO l=1,nlayer |
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214 | DO ig=1,ngrid |
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215 | reffrad(ig,l,iaer) = rdust(ig,l) * |
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216 | & (1.e0 + nueffdust(ig,l))**2.5 |
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217 | nueffrad(ig,l,iaer) = nueffdust(ig,l) |
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218 | ENDDO |
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219 | ENDDO |
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220 | c================================================================== |
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221 | CASE("dust_doubleq") aerkind! Two-moment scheme for dust |
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222 | c================================================================== |
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223 | DO l=1,nlayer |
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224 | DO ig=1,ngrid |
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225 | reffrad(ig,l,iaer) = rdust(ig,l) * ref_r0 |
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226 | nueffrad(ig,l,iaer) = nueffdust(ig,l) |
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227 | ENDDO |
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228 | ENDDO |
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229 | c================================================================== |
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230 | CASE("dust_submicron") aerkind ! Small dust population |
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231 | c================================================================== |
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232 | DO l=1,nlayer |
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233 | DO ig=1,ngrid |
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234 | reffrad(ig,l,iaer)=radius(igcm_dust_submicron) |
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235 | nueffrad(ig,l,iaer)=0.03 |
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236 | ENDDO |
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237 | ENDDO |
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238 | c================================================================== |
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239 | CASE("h2o_ice") aerkind ! Water ice crystals |
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240 | c================================================================== |
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241 | DO l=1,nlayer |
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242 | DO ig=1,ngrid |
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243 | c About reffice, do not confuse the mass mean radius |
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244 | c (rayon moyen massique) and the number median radius |
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245 | c (or geometric mean radius, rayon moyen géométrique). |
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246 | c rice is a mass mean radius, whereas rdust |
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247 | c is a geometric mean radius: |
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248 | c number median rad = mass mean rad x exp(-1.5 sigma0^2) |
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249 | c (Montmessin et al. 2004 paragraph 30). Therefore: |
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250 | reffrad(ig,l,iaer)=rice(ig,l)*(1.+nuice_ref) |
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251 | nueffrad(ig,l,iaer)=nuice_ref |
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252 | ENDDO |
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253 | ENDDO |
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254 | c================================================================== |
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255 | CASE("co2_ice") aerkind ! CO2 ice crystals |
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256 | c================================================================== |
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257 | DO l=1,nlayer |
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258 | DO ig=1,ngrid |
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259 | reffrad(ig,l,iaer)=real(riceco2(ig,l))*(1.+nuiceco2_ref) |
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260 | nueffrad(ig,l,iaer)=nuiceco2_ref |
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261 | ENDDO |
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262 | ENDDO |
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263 | c================================================================== |
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264 | CASE("stormdust_doubleq") aerkind! Two-moment scheme for |
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265 | c stormdust; same distribution than normal dust |
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266 | c================================================================== |
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267 | DO l=1,nlayer |
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268 | DO ig=1,ngrid |
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269 | reffrad(ig,l,iaer) = rstormdust(ig,l) * ref_r0 |
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270 | nueffrad(ig,l,iaer) = nueffdust(ig,l) |
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271 | ENDDO |
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272 | ENDDO |
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273 | c================================================================== |
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274 | CASE("topdust_doubleq") aerkind! MV18: Two-moment scheme for |
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275 | c topdust; same distribution than normal dust |
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276 | c================================================================== |
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277 | DO l=1,nlayer |
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278 | DO ig=1,ngrid |
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279 | reffrad(ig,l,iaer) = rtopdust(ig,l) * ref_r0 |
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280 | nueffrad(ig,l,iaer) = nueffdust(ig,l) |
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281 | ENDDO |
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282 | ENDDO |
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283 | c================================================================== |
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284 | END SELECT aerkind |
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285 | ENDDO ! iaer (loop on aerosol kind) |
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286 | |
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287 | END SUBROUTINE updatereffrad |
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288 | |
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289 | END MODULE updatereffrad_mod |
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