1 | MODULE mass_redistribution_mod |
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2 | |
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3 | CONTAINS |
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4 | |
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5 | SUBROUTINE mass_redistribution(ngrid,nlayer,nq,ptimestep, & |
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6 | pcapcal,pplay,pplev,pt,ptsrf,pq,pqs, & |
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7 | pu,pv,pdt,pdtsrf,pdq,pdu,pdv,pdmassmr, & |
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8 | pdtmr,pdtsrfmr,pdpsrfmr,pdumr,pdvmr,pdqmr,pdqsmr) |
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9 | |
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10 | use radcommon_h, only: glat |
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11 | USE planete_mod, only: bp |
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12 | use comcstfi_mod, only: g |
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13 | |
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14 | IMPLICIT NONE |
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15 | !======================================================================= |
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16 | ! subject: |
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17 | ! -------- |
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18 | ! Mass and momentum fluxes through sigma levels as the surface pressure is modified are also taken into account |
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19 | ! |
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20 | ! author: Jeremy Leconte 2012 (from F.Forget 1998) |
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21 | ! ------ |
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22 | ! |
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23 | ! input: |
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24 | ! ----- |
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25 | ! ngrid nombre de points de verticales |
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26 | ! (toutes les boucles de la physique sont au |
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27 | ! moins vectorisees sur ngrid) |
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28 | ! nlayer nombre de couches |
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29 | ! pplay(ngrid,nlayer) Pressure levels |
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30 | ! pplev(ngrid,nlayer+1) Pressure levels |
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31 | ! nq Number of tracers |
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32 | ! |
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33 | ! pt(ngrid,nlayer) temperature (en K) |
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34 | ! pq(ngrid,nlayer,nq) tracer specific concentration (kg/kg of air) |
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35 | ! pu,pv (ngrid,nlayer) wind velocity (m/s) |
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36 | ! |
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37 | ! |
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38 | ! pdX physical tendency of X before mass redistribution |
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39 | ! |
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40 | ! pdmassmr air Mass added to the atmosphere in each layer (kg/m2/s) |
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41 | ! |
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42 | ! output: |
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43 | ! ------- |
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44 | ! |
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45 | ! pdXmr(ngrid) physical tendency of X after mass redistribution |
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46 | ! |
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47 | ! |
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48 | ! |
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49 | !======================================================================= |
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50 | ! |
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51 | ! 0. Declarations : |
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52 | ! ------------------ |
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53 | |
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54 | !----------------------------------------------------------------------- |
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55 | ! Arguments : |
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56 | ! --------- |
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57 | INTEGER,INTENT(IN) :: ngrid, nlayer, nq |
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58 | REAL,INTENT(IN) :: ptimestep |
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59 | REAL,INTENT(IN) :: pcapcal(ngrid) |
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60 | REAL,INTENT(IN) :: pplay(ngrid,nlayer),pplev(ngrid,nlayer+1) |
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61 | REAL,INTENT(IN) :: pt(ngrid,nlayer),pdt(ngrid,nlayer) |
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62 | REAL,INTENT(IN) :: ptsrf(ngrid),pdtsrf(ngrid) |
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63 | REAL,INTENT(OUT) :: pdtmr(ngrid,nlayer) |
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64 | REAL,INTENT(IN) :: pu(ngrid,nlayer) , pv(ngrid,nlayer) |
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65 | REAL,INTENT(IN) :: pdu(ngrid,nlayer) , pdv(ngrid,nlayer) |
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66 | REAL,INTENT(IN) :: pdmassmr(ngrid,nlayer) |
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67 | REAL,INTENT(OUT) :: pdumr(ngrid,nlayer) , pdvmr(ngrid,nlayer) |
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68 | REAL,INTENT(IN) :: pq(ngrid,nlayer,nq),pdq(ngrid,nlayer,nq) |
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69 | REAL,INTENT(IN) :: pqs(ngrid,nq) |
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70 | REAL,INTENT(OUT) :: pdqmr(ngrid,nlayer,nq),pdqsmr(ngrid,nq) |
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71 | REAL,INTENT(OUT) :: pdpsrfmr(ngrid),pdtsrfmr(ngrid) |
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72 | ! |
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73 | ! Local variables : |
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74 | ! ----------------- |
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75 | |
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76 | ! Boiling/sublimation |
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77 | REAL Tsat(ngrid),zmassboil(ngrid) |
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78 | |
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79 | ! vertical reorganization of sigma levels |
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80 | REAL zzu(nlayer),zzv(nlayer) |
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81 | REAL zzq(nlayer,nq),zzt(nlayer) |
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82 | ! Dummy variables |
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83 | INTEGER n,l,ig,iq |
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84 | REAL zdtsig(ngrid,nlayer) |
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85 | REAL zmass(ngrid,nlayer),zzmass(nlayer),w(nlayer+1) |
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86 | REAL zdmass_sum(ngrid,nlayer+1) |
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87 | REAL zmflux(nlayer+1) |
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88 | REAL zq1(nlayer) |
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89 | REAL ztsrf(ngrid) |
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90 | REAL ztm(nlayer+1) |
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91 | REAL zum(nlayer+1) , zvm(nlayer+1) |
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92 | REAL zqm(nlayer+1,nq),zqm1(nlayer+1) |
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93 | REAL sigma(nlayer+1) |
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94 | |
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95 | ! local saved variables |
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96 | LOGICAL, SAVE :: firstcall=.true. |
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97 | !$OMP THREADPRIVATE(firstcall) |
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98 | |
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99 | !---------------------------------------------------------------------- |
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100 | |
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101 | ! Initialisation |
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102 | ! -------------- |
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103 | ! |
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104 | IF (firstcall) THEN |
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105 | firstcall=.false. |
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106 | ENDIF |
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107 | ! |
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108 | !====================================================================== |
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109 | ! Calcul of h2o condensation |
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110 | ! ============================================================ |
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111 | ! |
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112 | ! Used variable : |
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113 | ! pdmassmr : air Mass added to the atmosphere in each layer per unit time (kg/m2/s) |
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114 | ! zdmass_sum(ngrid,l) : total air mass added to the atm above layer l per unit time (kg/m2/s) |
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115 | ! |
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116 | ! |
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117 | ! Surface tracer Tendencies set to 0 |
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118 | ! ------------------------------------- |
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119 | pdqsmr(1:ngrid,1:nq)=0. |
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120 | |
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121 | ztsrf(1:ngrid) = ptsrf(1:ngrid) + pdtsrf(1:ngrid)*ptimestep |
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122 | |
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123 | |
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124 | DO ig=1,ngrid |
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125 | zdmass_sum(ig,nlayer+1)=0. |
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126 | DO l = nlayer, 1, -1 |
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127 | zmass(ig,l) = (pplev(ig,l)-pplev(ig,l+1))/glat(ig) |
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128 | zdmass_sum(ig,l)= zdmass_sum(ig,l+1)+pdmassmr(ig,l) |
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129 | END DO |
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130 | END DO |
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131 | |
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132 | ! ************************* |
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133 | ! UPDATE SURFACE |
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134 | ! ************************* |
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135 | ! Changing pressure at the surface: |
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136 | ! """""""""""""""""""""""""""""""""""" |
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137 | |
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138 | zmassboil(1:ngrid) = 0 ! AF: TODO: update this for pluto |
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139 | pdtsrfmr(1:ngrid) = 0 |
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140 | |
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141 | pdpsrfmr(1:ngrid) = (zdmass_sum(1:ngrid,1)+zmassboil(1:ngrid))*g |
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142 | |
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143 | do ig = 1, ngrid |
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144 | IF(ABS(pdpsrfmr(ig)*ptimestep).GT.pplev(ig,1)) THEN |
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145 | PRINT*,'STOP in condens in mass_redistribution' |
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146 | PRINT*,'condensing more than total mass' |
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147 | PRINT*,'Grid point ',ig |
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148 | PRINT*,'Ps = ',pplev(ig,1) |
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149 | PRINT*,'d Ps = ',pdpsrfmr(ig)*ptimestep |
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150 | STOP |
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151 | ENDIF |
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152 | enddo ! of DO ig=1,ngrid |
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153 | |
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154 | |
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155 | ! *************************************************************** |
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156 | ! Correction to account for redistribution between sigma or hybrid |
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157 | ! layers when changing surface pressure |
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158 | ! zzx quantities have dimension (nlayer) to speed up calculation |
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159 | ! ************************************************************* |
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160 | |
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161 | DO ig=1,ngrid |
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162 | zzt(1:nlayer) = pt(ig,1:nlayer) + pdt(ig,1:nlayer) * ptimestep |
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163 | zzu(1:nlayer) = pu(ig,1:nlayer) + pdu(ig,1:nlayer) * ptimestep |
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164 | zzv(1:nlayer) = pv(ig,1:nlayer) + pdv(ig,1:nlayer) * ptimestep |
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165 | zzq(1:nlayer,1:nq)=pq(ig,1:nlayer,1:nq)+pdq(ig,1:nlayer,1:nq)*ptimestep ! must add the water that has fallen??? |
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166 | |
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167 | ! Mass fluxes of air through the sigma levels (kg.m-2.s-1) (>0 when up) |
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168 | ! """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" |
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169 | zmflux(1) = zmassboil(ig) |
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170 | sigma(1)=1 |
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171 | DO l=1,nlayer |
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172 | ! Ehouarn: shouldn't we rather compute sigma levels than use bp()? |
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173 | ! sigma(l+1)=pplev(ig,l+1)/pplev(ig,1) |
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174 | ! zmflux(l+1) = zmflux(l) + pdmassmr(ig,l) - & |
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175 | ! (sigma(l)-sigma(l+1))*(zdmass_sum(ig,1)+zmflux(1)) |
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176 | ! if (abs(zmflux(l+1)).lt.1E-13.OR.sigma(l+1).eq.0.) zmflux(l+1)=0. |
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177 | ! Ehouarn: but for now leave things as before |
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178 | zmflux(l+1) = zmflux(l) + pdmassmr(ig,l) - (bp(l)-bp(l+1))*(zdmass_sum(ig,1)+zmflux(1)) |
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179 | ! zmflux set to 0 if very low to avoid: top layer is disappearing in v1ld |
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180 | if (abs(zmflux(l+1)).lt.1E-13.OR.bp(l+1).eq.0.) zmflux(l+1)=0. |
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181 | END DO |
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182 | |
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183 | ! Mass of each layer |
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184 | ! ------------------ |
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185 | zzmass(1:nlayer)=zmass(ig,1:nlayer)*(1.+pdpsrfmr(ig)*ptimestep/pplev(ig,1)) |
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186 | |
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187 | |
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188 | ! Corresponding fluxes for T,U,V,Q |
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189 | ! """""""""""""""""""""""""""""""" |
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190 | |
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191 | ! averaging operator for TRANSPORT |
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192 | ! """""""""""""""""""""""""""""""" |
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193 | ! Value transfert at the surface interface when condensation |
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194 | ! sublimation: |
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195 | ztm(1) = ztsrf(ig) |
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196 | zum(1) = 0. |
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197 | zvm(1) = 0. |
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198 | zqm(1,1:nq)=0. ! most tracer do not condense ! |
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199 | !! if (water) zqm(1,igcm_h2o_gas)=1. ! flux is 100% h2o at surface |
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200 | |
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201 | ! Van Leer scheme: |
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202 | w(1:nlayer+1)=-zmflux(1:nlayer+1)*ptimestep |
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203 | call vl1d(nlayer,zzt,2.,zzmass,w,ztm) |
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204 | call vl1d(nlayer,zzu,2.,zzmass,w,zum) |
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205 | call vl1d(nlayer,zzv,2.,zzmass,w,zvm) |
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206 | do iq=1,nq |
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207 | zq1(1:nlayer)=zzq(1:nlayer,iq) |
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208 | zqm1(1)=zqm(1,iq) |
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209 | ! print*,iq |
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210 | ! print*,zq1 |
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211 | call vl1d(nlayer,zq1,2.,zzmass,w,zqm1) |
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212 | do l=2,nlayer |
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213 | zzq(l,iq)=zq1(l) |
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214 | zqm(l,iq)=zqm1(l) |
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215 | enddo |
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216 | enddo |
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217 | |
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218 | ! Surface condensation affects low winds |
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219 | if (zmflux(1).lt.0) then |
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220 | zum(1)= zzu(1) * (w(1)/zzmass(1)) |
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221 | zvm(1)= zzv(1) * (w(1)/zzmass(1)) |
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222 | if (w(1).gt.zzmass(1)) then ! ensure numerical stability |
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223 | zum(1)= (zzu(1)-zum(2))*zzmass(1)/w(1) + zum(2) |
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224 | zvm(1)= (zzv(1)-zvm(2))*zzmass(1)/w(1) + zvm(2) |
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225 | end if |
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226 | end if |
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227 | |
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228 | ztm(nlayer+1)= zzt(nlayer) ! should not be used, but... |
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229 | zum(nlayer+1)= zzu(nlayer) ! should not be used, but... |
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230 | zvm(nlayer+1)= zzv(nlayer) ! should not be used, but... |
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231 | zqm(nlayer+1,1:nq)= zzq(nlayer,1:nq) |
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232 | |
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233 | ! Tendencies on T, U, V, Q |
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234 | ! """""""""""""""""""""""" |
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235 | DO l=1,nlayer |
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236 | |
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237 | ! Tendencies on T |
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238 | pdtmr(ig,l) = (1/zzmass(l)) * & |
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239 | (zmflux(l)*(ztm(l) - zzt(l))-zmflux(l+1)*(ztm(l+1)-zzt(l))) |
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240 | !JL12 the last term in Newcondens has been set to zero because we are only dealing with redistribution here |
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241 | |
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242 | ! Tendencies on U |
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243 | pdumr(ig,l) = (1/zzmass(l)) *( zmflux(l)*(zum(l) - zzu(l)) - zmflux(l+1)*(zum(l+1) - zzu(l)) ) |
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244 | |
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245 | ! Tendencies on V |
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246 | pdvmr(ig,l) = (1/zzmass(l)) *( zmflux(l)*(zvm(l) - zzv(l)) - zmflux(l+1)*(zvm(l+1) - zzv(l)) ) |
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247 | |
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248 | END DO |
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249 | |
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250 | ! Tendencies on Q |
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251 | do iq=1,nq |
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252 | DO l=1,nlayer |
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253 | pdqmr(ig,l,iq)= (1/zzmass(l)) * & |
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254 | (zmflux(l)*(zqm(l,iq)-zzq(l,iq))- zmflux(l+1)*(zqm(l+1,iq)-zzq(l,iq)) - pdmassmr(ig,l)*zzq(l,iq)) |
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255 | END DO |
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256 | enddo |
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257 | |
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258 | END DO ! loop on ig |
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259 | |
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260 | CONTAINS |
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261 | |
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262 | ! ***************************************************************** |
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263 | SUBROUTINE vl1d(llm,q,pente_max,zzmass,w,qm) |
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264 | ! |
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265 | ! |
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266 | ! Operateur de moyenne inter-couche pour calcul de transport type |
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267 | ! Van-Leer " pseudo amont " dans la verticale |
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268 | ! q,w sont des arguments d'entree pour le s-pg .... |
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269 | ! masse : masse de la couche Dp/g |
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270 | ! w : masse d'atm ``transferee'' a chaque pas de temps (kg.m-2) |
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271 | ! pente_max = 2 conseillee |
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272 | ! |
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273 | ! |
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274 | ! -------------------------------------------------------------------- |
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275 | |
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276 | IMPLICIT NONE |
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277 | |
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278 | ! Arguments: |
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279 | ! ---------- |
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280 | integer,intent(in) :: llm |
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281 | real zzmass(llm),pente_max |
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282 | REAL q(llm),qm(llm+1) |
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283 | REAL w(llm+1) |
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284 | ! |
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285 | ! Local |
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286 | ! --------- |
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287 | ! |
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288 | INTEGER l |
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289 | ! |
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290 | real dzq(llm),dzqw(llm),adzqw(llm),dzqmax |
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291 | real sigw, Mtot, MQtot |
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292 | integer m |
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293 | ! integer ismax,ismin |
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294 | |
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295 | |
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296 | ! On oriente tout dans le sens de la pression |
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297 | ! W > 0 WHEN DOWN !!!!!!!!!!!!! |
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298 | |
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299 | do l=2,llm |
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300 | dzqw(l)=q(l-1)-q(l) |
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301 | adzqw(l)=abs(dzqw(l)) |
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302 | enddo |
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303 | |
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304 | do l=2,llm-1 |
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305 | if(dzqw(l)*dzqw(l+1).gt.0.) then |
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306 | dzq(l)=0.5*(dzqw(l)+dzqw(l+1)) |
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307 | else |
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308 | dzq(l)=0. |
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309 | endif |
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310 | dzqmax=pente_max*min(adzqw(l),adzqw(l+1)) |
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311 | dzq(l)=sign(min(abs(dzq(l)),dzqmax),dzq(l)) |
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312 | enddo |
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313 | |
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314 | dzq(1)=0. |
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315 | dzq(llm)=0. |
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316 | |
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317 | do l = 1,llm-1 |
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318 | |
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319 | ! Regular scheme (transfered mass < layer mass) |
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320 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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321 | if(w(l+1).gt.0. .and. w(l+1).le.zzmass(l+1)) then |
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322 | sigw=w(l+1)/zzmass(l+1) |
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323 | qm(l+1)=(q(l+1)+0.5*(1.-sigw)*dzq(l+1)) |
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324 | else if(w(l+1).le.0. .and. -w(l+1).le.zzmass(l)) then |
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325 | sigw=w(l+1)/zzmass(l) |
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326 | qm(l+1)=(q(l)-0.5*(1.+sigw)*dzq(l)) |
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327 | |
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328 | ! Extended scheme (transfered mass > layer mass) |
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329 | ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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330 | else if(w(l+1).gt.0.) then |
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331 | m=l+1 |
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332 | Mtot = zzmass(m) |
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333 | MQtot = zzmass(m)*q(m) |
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334 | do while ((m.lt.llm).and.(w(l+1).gt.(Mtot+zzmass(m+1)))) |
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335 | m=m+1 |
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336 | Mtot = Mtot + zzmass(m) |
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337 | MQtot = MQtot + zzmass(m)*q(m) |
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338 | end do |
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339 | if (m.lt.llm) then |
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340 | sigw=(w(l+1)-Mtot)/zzmass(m+1) |
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341 | qm(l+1)= (1/w(l+1))*(MQtot + (w(l+1)-Mtot)*(q(m+1)+0.5*(1.-sigw)*dzq(m+1)) ) |
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342 | else |
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343 | ! w(l+1) = Mtot |
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344 | ! qm(l+1) = Mqtot / Mtot |
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345 | write(*,*) 'top layer is disappearing !',l,Mtot,w(l+1),qm(l+1) |
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346 | print*,zzmass |
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347 | print*,w |
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348 | print*,q |
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349 | print*,qm |
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350 | stop |
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351 | end if |
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352 | else ! if(w(l+1).lt.0) |
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353 | m = l-1 |
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354 | Mtot = zzmass(m+1) |
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355 | MQtot = zzmass(m+1)*q(m+1) |
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356 | if (m.gt.0) then ! because some compilers will have problems |
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357 | ! evaluating zzmass(0) |
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358 | do while ((m.gt.0).and.(-w(l+1).gt.(Mtot+zzmass(m)))) |
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359 | m=m-1 |
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360 | Mtot = Mtot + zzmass(m+1) |
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361 | MQtot = MQtot + zzmass(m+1)*q(m+1) |
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362 | if (m.eq.0) exit |
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363 | end do |
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364 | endif |
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365 | if (m.gt.0) then |
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366 | sigw=(w(l+1)+Mtot)/zzmass(m) |
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367 | qm(l+1)= (-1/w(l+1))*(MQtot + (-w(l+1)-Mtot)*(q(m)-0.5*(1.+sigw)*dzq(m)) ) |
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368 | else |
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369 | qm(l+1)= (-1/w(l+1))*(MQtot + (-w(l+1)-Mtot)*qm(1)) |
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370 | end if |
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371 | end if |
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372 | enddo |
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373 | |
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374 | ! boundary conditions (not used in newcondens !!) |
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375 | ! qm(llm+1)=0. |
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376 | ! if(w(1).gt.0.) then |
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377 | ! qm(1)=q(1) |
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378 | ! else |
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379 | ! qm(1)=0. |
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380 | ! end if |
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381 | |
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382 | END SUBROUTINE vl1d |
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383 | |
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384 | END SUBROUTINE mass_redistribution |
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385 | |
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386 | END MODULE mass_redistribution_mod |
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