1 | !********************************************************************** |
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2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
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3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
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4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
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5 | ! * |
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6 | ! This file is part of FLEXPART. * |
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7 | ! * |
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8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
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9 | ! it under the terms of the GNU General Public License as published by* |
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10 | ! the Free Software Foundation, either version 3 of the License, or * |
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11 | ! (at your option) any later version. * |
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12 | ! * |
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13 | ! FLEXPART is distributed in the hope that it will be useful, * |
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14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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16 | ! GNU General Public License for more details. * |
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17 | ! * |
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18 | ! You should have received a copy of the GNU General Public License * |
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19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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20 | !********************************************************************** |
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21 | |
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22 | subroutine calcmatrix(lconv,delt,cbmf,metdata_format) |
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23 | ! o i o |
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24 | !***************************************************************************** |
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25 | ! * |
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26 | ! This subroutine calculates the matrix describing convective * |
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27 | ! redistribution of mass in a grid column, using the subroutine * |
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28 | ! convect43c.f provided by Kerry Emanuel. * |
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29 | ! * |
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30 | ! Petra Seibert, Bernd C. Krueger, 2000-2001 * |
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31 | ! * |
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32 | !***************************************************************************** |
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33 | ! Changes: * |
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34 | ! changed by C. Forster, November 2003 - February 2004 * |
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35 | ! array fmassfrac(nconvlevmax,nconvlevmax) represents * |
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36 | ! the convective redistribution matrix for the particles * |
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37 | ! * |
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38 | ! Unified ECMWF and GFS builds * |
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39 | ! Marian Harustak, 12.5.2017 * |
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40 | ! - Merged calcmatrix and calcmatrix_gfs into one routine using if-then * |
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41 | ! for meteo-type dependent code * |
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42 | !***************************************************************************** |
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43 | ! * |
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44 | ! lconv indicates whether there is convection in this cell, or not * |
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45 | ! delt time step for convection [s] * |
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46 | ! cbmf cloud base mass flux * |
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47 | ! metdata_format format of metdata (ecmwf/gfs) * |
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48 | ! * |
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49 | !***************************************************************************** |
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50 | |
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51 | use par_mod |
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52 | use com_mod |
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53 | use conv_mod |
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54 | use class_gribfile |
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55 | |
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56 | implicit none |
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57 | |
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58 | real :: rlevmass,summe |
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59 | integer :: metdata_format |
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60 | |
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61 | integer :: iflag, k, kk, kuvz |
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62 | |
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63 | !1-d variables for convection |
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64 | !variables for redistribution matrix |
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65 | real :: cbmfold, precip, qprime |
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66 | real :: tprime, wd, f_qvsat |
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67 | real :: delt,cbmf |
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68 | logical :: lconv |
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69 | |
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70 | lconv = .false. |
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71 | |
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72 | |
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73 | ! calculate pressure at eta levels for use in convect |
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74 | ! and assign temp & spec. hum. to 1D workspace |
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75 | ! ------------------------------------------------------- |
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76 | |
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77 | ! pconv(1) is the pressure at the first level above ground |
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78 | ! phconv(k) is the pressure between levels k-1 and k |
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79 | ! dpr(k) is the pressure difference "around" tconv(k) |
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80 | ! phconv(kmax) must also be defined 1/2 level above pconv(kmax) |
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81 | ! Therefore, we define k = kuvz-1 and let kuvz start from 2 |
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82 | ! top layer cannot be used for convection because p at top of this layer is |
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83 | ! not given |
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84 | |
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85 | |
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86 | phconv(1) = psconv |
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87 | ! Emanuel subroutine needs pressure in hPa, therefore convert all pressures |
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88 | do kuvz = 2,nuvz |
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89 | k = kuvz-1 |
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90 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
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91 | pconv(k) = (akz(kuvz) + bkz(kuvz)*psconv) |
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92 | phconv(kuvz) = (akm(kuvz) + bkm(kuvz)*psconv) |
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93 | else |
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94 | phconv(kuvz) = 0.5*(pconv(kuvz)+pconv(k)) |
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95 | endif |
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96 | dpr(k) = phconv(k) - phconv(kuvz) |
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97 | qsconv(k) = f_qvsat( pconv(k), tconv(k) ) |
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98 | |
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99 | ! initialize mass fractions |
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100 | do kk=1,nconvlev |
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101 | fmassfrac(k,kk)=0. |
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102 | end do |
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103 | end do |
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104 | |
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105 | |
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106 | !note that Emanuel says it is important |
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107 | !a. to set this =0. every grid point |
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108 | !b. to keep this value in the calling programme in the iteration |
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109 | |
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110 | ! CALL CONVECTION |
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111 | !****************** |
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112 | |
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113 | cbmfold = cbmf |
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114 | ! Convert pressures to hPa, as required by Emanuel scheme |
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115 | !******************************************************** |
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116 | !!$ do k=1,nconvlev !old |
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117 | do k=1,nconvlev+1 !bugfix |
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118 | pconv_hpa(k)=pconv(k)/100. |
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119 | phconv_hpa(k)=phconv(k)/100. |
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120 | end do |
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121 | phconv_hpa(nconvlev+1)=phconv(nconvlev+1)/100. |
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122 | call convect(nconvlevmax, nconvlev, delt, iflag, & |
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123 | precip, wd, tprime, qprime, cbmf) |
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124 | |
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125 | ! do not update fmassfrac and cloudbase massflux |
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126 | ! if no convection takes place or |
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127 | ! if a CFL criterion is violated in convect43c.f |
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128 | if (iflag .ne. 1 .and. iflag .ne. 4) then |
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129 | cbmf=cbmfold |
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130 | goto 200 |
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131 | endif |
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132 | |
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133 | ! do not update fmassfrac and cloudbase massflux |
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134 | ! if the old and the new cloud base mass |
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135 | ! fluxes are zero |
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136 | if (cbmf.le.0..and.cbmfold.le.0.) then |
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137 | cbmf=cbmfold |
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138 | goto 200 |
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139 | endif |
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140 | |
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141 | ! Update fmassfrac |
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142 | ! account for mass displaced from level k to level k |
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143 | |
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144 | lconv = .true. |
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145 | do k=1,nconvtop |
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146 | rlevmass = dpr(k)/ga |
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147 | summe = 0. |
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148 | do kk=1,nconvtop |
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149 | fmassfrac(k,kk) = delt*fmass(k,kk) |
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150 | summe = summe + fmassfrac(k,kk) |
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151 | end do |
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152 | fmassfrac(k,k)=fmassfrac(k,k) + rlevmass - summe |
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153 | end do |
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154 | |
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155 | 200 continue |
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156 | |
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157 | end subroutine calcmatrix |
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