1 | ! SPDX-FileCopyrightText: FLEXPART 1998-2019, see flexpart_license.txt |
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2 | ! SPDX-License-Identifier: GPL-3.0-or-later |
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3 | |
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4 | subroutine readreceptors |
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5 | |
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6 | !***************************************************************************** |
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7 | ! * |
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8 | ! This routine reads the user specifications for the receptor points. * |
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9 | ! * |
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10 | ! Author: A. Stohl * |
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11 | ! 1 August 1996 * |
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12 | ! HSO, 14 August 2013 |
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13 | ! Added optional namelist input |
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14 | ! * |
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15 | !***************************************************************************** |
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16 | ! * |
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17 | ! Variables: * |
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18 | ! receptorarea(maxreceptor) area of dx*dy at location of receptor * |
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19 | ! receptorname(maxreceptor) names of receptors * |
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20 | ! xreceptor,yreceptor coordinates of receptor points * |
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21 | ! * |
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22 | ! Constants: * |
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23 | ! unitreceptor unit connected to file RECEPTORS * |
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24 | ! * |
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25 | !***************************************************************************** |
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26 | |
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27 | use par_mod |
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28 | use com_mod |
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29 | |
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30 | implicit none |
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31 | |
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32 | integer :: j |
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33 | real :: x,y,xm,ym |
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34 | character(len=16) :: receptor |
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35 | |
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36 | integer :: readerror |
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37 | real :: lon,lat ! for namelist input, lon/lat are used instead of x,y |
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38 | integer,parameter :: unitreceptorout=2 |
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39 | |
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40 | ! declare namelist |
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41 | namelist /receptors/ & |
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42 | receptor, lon, lat |
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43 | |
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44 | lon=-999.9 |
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45 | |
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46 | ! For backward runs, do not allow receptor output. Thus, set number of receptors to zero |
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47 | !***************************************************************************** |
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48 | |
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49 | if (ldirect.lt.0) then |
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50 | numreceptor=0 |
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51 | return |
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52 | endif |
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53 | |
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54 | |
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55 | ! Open the RECEPTORS file and read output grid specifications |
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56 | !************************************************************ |
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57 | |
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58 | open(unitreceptor,file=path(1)(1:length(1))//'RECEPTORS',form='formatted',status='old',err=999) |
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59 | |
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60 | ! try namelist input |
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61 | read(unitreceptor,receptors,iostat=readerror) |
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62 | |
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63 | ! prepare namelist output if requested |
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64 | if (nmlout.and.lroot) then |
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65 | open(unitreceptorout,file=path(2)(1:length(2))//'RECEPTORS.namelist',& |
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66 | &access='append',status='replace',err=1000) |
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67 | endif |
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68 | |
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69 | if ((lon.lt.-900).or.(readerror.ne.0)) then |
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70 | |
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71 | close(unitreceptor) |
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72 | open(unitreceptor,file=path(1)(1:length(1))//'RECEPTORS',status='old',err=999) |
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73 | call skplin(5,unitreceptor) |
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74 | |
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75 | ! Read the names and coordinates of the receptors |
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76 | !************************************************ |
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77 | |
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78 | j=0 |
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79 | 100 j=j+1 |
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80 | read(unitreceptor,*,end=99) |
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81 | read(unitreceptor,*,end=99) |
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82 | read(unitreceptor,*,end=99) |
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83 | read(unitreceptor,'(4x,a16)',end=99) receptor |
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84 | call skplin(3,unitreceptor) |
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85 | read(unitreceptor,'(4x,f11.4)',end=99) x |
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86 | call skplin(3,unitreceptor) |
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87 | read(unitreceptor,'(4x,f11.4)',end=99) y |
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88 | if ((x.eq.0.).and.(y.eq.0.).and. & |
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89 | (receptor.eq.' ')) then |
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90 | j=j-1 |
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91 | goto 100 |
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92 | endif |
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93 | if (j.gt.maxreceptor) then |
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94 | write(*,*) ' #### FLEXPART MODEL ERROR! TOO MANY RECEPTOR #### ' |
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95 | write(*,*) ' #### POINTS ARE GIVEN. #### ' |
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96 | write(*,*) ' #### MAXIMUM NUMBER IS ',maxreceptor,' #### ' |
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97 | write(*,*) ' #### PLEASE MAKE CHANGES IN FILE RECEPTORS #### ' |
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98 | endif |
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99 | receptorname(j)=receptor |
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100 | xreceptor(j)=(x-xlon0)/dx ! transform to grid coordinates |
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101 | yreceptor(j)=(y-ylat0)/dy |
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102 | xm=r_earth*cos(y*pi/180.)*dx/180.*pi |
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103 | ym=r_earth*dy/180.*pi |
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104 | receptorarea(j)=xm*ym |
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105 | |
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106 | ! write receptors file in namelist format to output directory if requested |
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107 | if (nmlout.and.lroot) then |
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108 | lon=x |
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109 | lat=y |
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110 | write(unitreceptorout,nml=receptors) |
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111 | endif |
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112 | |
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113 | goto 100 |
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114 | |
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115 | 99 numreceptor=j-1 |
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116 | |
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117 | else ! continue with namelist input |
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118 | |
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119 | j=0 |
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120 | do while (readerror.eq.0) |
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121 | j=j+1 |
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122 | lon=-999.9 |
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123 | read(unitreceptor,receptors,iostat=readerror) |
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124 | if ((lon.lt.-900).or.(readerror.ne.0)) then |
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125 | readerror=1 |
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126 | else |
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127 | if (j.gt.maxreceptor) then |
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128 | write(*,*) ' #### FLEXPART MODEL ERROR! TOO MANY RECEPTOR #### ' |
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129 | write(*,*) ' #### POINTS ARE GIVEN. #### ' |
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130 | write(*,*) ' #### MAXIMUM NUMBER IS ',maxreceptor,' #### ' |
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131 | write(*,*) ' #### PLEASE MAKE CHANGES IN FILE RECEPTORS #### ' |
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132 | endif |
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133 | receptorname(j)=receptor |
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134 | xreceptor(j)=(lon-xlon0)/dx ! transform to grid coordinates |
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135 | yreceptor(j)=(lat-ylat0)/dy |
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136 | xm=r_earth*cos(lat*pi/180.)*dx/180.*pi |
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137 | ym=r_earth*dy/180.*pi |
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138 | receptorarea(j)=xm*ym |
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139 | endif |
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140 | |
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141 | ! write receptors file in namelist format to output directory if requested |
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142 | if (nmlout.and.lroot) then |
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143 | write(unitreceptorout,nml=receptors) |
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144 | endif |
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145 | |
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146 | end do |
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147 | numreceptor=j-1 |
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148 | close(unitreceptor) |
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149 | |
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150 | endif |
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151 | |
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152 | if (nmlout.and.lroot) then |
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153 | close(unitreceptorout) |
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154 | endif |
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155 | |
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156 | return |
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157 | |
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158 | |
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159 | 999 write(*,*) ' #### FLEXPART MODEL ERROR! FILE "RECEPTORS" #### ' |
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160 | write(*,*) ' #### CANNOT BE OPENED IN THE DIRECTORY #### ' |
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161 | write(*,'(a)') path(1)(1:length(1)) |
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162 | stop |
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163 | |
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164 | 1000 write(*,*) ' #### FLEXPART MODEL ERROR! FILE "RECEPTORS" #### ' |
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165 | write(*,*) ' #### CANNOT BE OPENED IN THE DIRECTORY #### ' |
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166 | write(*,'(a)') path(2)(1:length(2)) |
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167 | stop |
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168 | |
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169 | end subroutine readreceptors |
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