1 | PROGRAM create_coordinate |
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2 | ! |
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3 | USE NETCDF |
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4 | USE agrif_readwrite |
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5 | USE agrif_interpolation |
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6 | ! |
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7 | !**************************************************************** |
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8 | ! * |
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9 | !************************************************************************ |
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10 | ! Fortran 95 OPA Nesting tools * |
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11 | ! * |
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12 | ! Copyright (C) 2005 Florian Lemarié (Florian.Lemarie@imag.fr) * |
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13 | ! * |
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14 | !************************************************************************ |
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15 | ! |
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16 | ! PROGRAM CREATE_COORDINATE * |
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17 | ! * |
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18 | ! program to create coordinates file for child grid * |
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19 | ! (child grid defined by imin,imax,jmin,jmax,rho) * |
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20 | ! * |
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21 | !**************************************************************** |
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22 | ! |
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23 | ! variables declaration |
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24 | ! |
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25 | REAL*8 :: rpi,ra,rad |
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26 | CHARACTER*100 :: Child_filename |
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27 | INTEGER :: i |
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28 | TYPE(Coordinates) :: G0,G1 |
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29 | INTEGER :: narg,iargc |
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30 | CHARACTER(len=80) :: namelistname |
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31 | |
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32 | narg = iargc() |
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33 | |
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34 | IF (narg == 0) THEN |
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35 | namelistname = 'namelist.input' |
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36 | ELSE |
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37 | CALL getarg(1,namelistname) |
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38 | ENDIF |
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39 | ! |
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40 | ! read input file (namelist.input) |
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41 | ! |
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42 | CALL read_namelist(namelistname) |
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43 | ! |
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44 | |
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45 | ! |
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46 | ! read parent coodinates file |
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47 | ! |
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48 | status = Read_Coordinates(TRIM(parent_coordinate_file),G0) |
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49 | ! |
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50 | ! define name of child coordinate file |
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51 | ! |
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52 | CALL set_child_name(parent_coordinate_file,Child_filename) |
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53 | ! |
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54 | IF( imax > SIZE(G0%glamt,1) .OR. jmax > SIZE(G0%glamt,2) .OR. imax <= imin .OR. jmax <= jmin ) THEN |
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55 | WRITE(*,*) 'ERROR ***** bad child grid definition ...' |
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56 | WRITE(*,*) 'please check imin,jmin,imax,jmax,jpizoom,jpjzoom values' |
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57 | WRITE(*,*) ' ' |
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58 | STOP |
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59 | ENDIF |
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60 | ! |
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61 | WRITE(*,*) ' ' |
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62 | WRITE(*,*)'Size of the High resolution grid: ',nxfin,' x ',nyfin |
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63 | WRITE(*,*) ' ' |
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64 | ! |
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65 | ! allocation of child grid elements |
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66 | ! |
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67 | CALL agrif_grid_allocate(G1,nxfin,nyfin) |
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68 | ! |
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69 | ! |
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70 | ! check potential longitude problems |
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71 | ! |
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72 | IF( G0%glamt(imin,jmin) > G0%glamt(imax,jmax) ) THEN |
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73 | WRITE(*,*) ' ' |
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74 | WHERE ( G0%glamt < 0 ) |
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75 | G0%glamt = G0%glamt + 360. |
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76 | END WHERE |
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77 | WHERE ( G0%glamf < 0 ) |
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78 | G0%glamf = G0%glamf + 360. |
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79 | END WHERE |
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80 | ENDIF |
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81 | |
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82 | ! |
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83 | ! interpolation from parent grid to child grid for |
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84 | ! T points (cell center) |
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85 | ! F points (lower left corner) |
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86 | ! U points (cell left side) |
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87 | ! V points (cell top side) |
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88 | ! glam = longitude |
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89 | ! gphi = latitude |
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90 | ! |
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91 | |
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92 | ! |
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93 | CALL agrif_interp(G0%glamt,G1%glamt,'T') |
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94 | CALL agrif_interp(G0%glamf,G1%glamf,'F') |
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95 | G1%glamu = G1%glamf |
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96 | G1%glamv = G1%glamt |
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97 | ! |
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98 | CALL agrif_interp(G0%gphit,G1%gphit,'T') |
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99 | CALL agrif_interp(G0%gphif,G1%gphif,'F') |
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100 | G1%gphiu = G1%gphit |
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101 | G1%gphiv = G1%gphif |
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102 | ! |
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103 | ! |
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104 | rpi = 4.*ATAN(1.) |
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105 | rad = rpi/180. |
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106 | ra = 6371229. |
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107 | ! |
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108 | ! Compute scale factors e1 e2 |
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109 | ! |
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110 | DO j=1,nyfin |
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111 | DO i=2,nxfin |
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112 | G1%e1t(i,j) = ra * rad * SQRT( (COS(rad*G1%gphit(i,j))*(G1%glamu(i,j)-G1%glamu(i-1,j)))**2 & |
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113 | + (G1%gphiu(i,j)-G1%gphiu(i-1,j))**2) |
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114 | G1%e1v(i,j) = ra * rad * SQRT( (COS(rad*G1%gphiv(i,j))*(G1%glamf(i,j)-G1%glamf(i-1,j)))**2 & |
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115 | + (G1%gphif(i,j)-G1%gphif(i-1,j))**2) |
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116 | END DO |
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117 | END DO |
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118 | ! |
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119 | G1%e1t(1,:)=G1%e1t(2,:) |
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120 | G1%e1v(1,:)=G1%e1v(2,:) |
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121 | ! |
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122 | DO j=1,nyfin |
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123 | DO i=1,nxfin-1 |
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124 | G1%e1u(i,j) = ra * rad * SQRT( (COS(rad*G1%gphiu(i,j))*(G1%glamt(i+1,j)-G1%glamt(i,j)))**2 & |
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125 | + (G1%gphit(i+1,j)-G1%gphit(i,j))**2) |
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126 | G1%e1f(i,j) = ra * rad * SQRT( (COS(rad*G1%gphif(i,j))*(G1%glamv(i+1,j)-G1%glamv(i,j)))**2 & |
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127 | + (G1%gphiv(i+1,j)-G1%gphiv(i,j))**2) |
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128 | END DO |
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129 | END DO |
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130 | ! |
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131 | G1%e1u(nxfin,:)=G1%e1u(nxfin-1,:) |
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132 | G1%e1f(nxfin,:)=G1%e1f(nxfin-1,:) |
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133 | ! |
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134 | DO j=2,nyfin |
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135 | DO i=1,nxfin |
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136 | G1%e2t(i,j) = ra * rad * SQRT( (COS(rad*G1%gphit(i,j))*(G1%glamv(i,j)-G1%glamv(i,j-1)))**2 & |
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137 | + (G1%gphiv(i,j)-G1%gphiv(i,j-1))**2) |
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138 | G1%e2u(i,j) = ra * rad * SQRT( (COS(rad*G1%gphiu(i,j))*(G1%glamf(i,j)-G1%glamf(i,j-1)))**2 & |
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139 | + (G1%gphif(i,j)-G1%gphif(i,j-1))**2) |
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140 | END DO |
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141 | END DO |
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142 | ! |
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143 | G1%e2t(:,1)=G1%e2t(:,2) |
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144 | G1%e2u(:,1)=G1%e2u(:,2) |
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145 | ! |
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146 | DO j=1,nyfin-1 |
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147 | DO i=1,nxfin |
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148 | G1%e2v(i,j) = ra * rad * SQRT( (COS(rad*G1%gphiv(i,j))*(G1%glamt(i,j+1)-G1%glamt(i,j)))**2 & |
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149 | + (G1%gphit(i,j+1)-G1%gphit(i,j))**2) |
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150 | G1%e2f(i,j) = ra * rad * SQRT( (COS(rad*G1%gphif(i,j))*(G1%glamu(i,j+1)-G1%glamu(i,j)))**2 & |
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151 | + (G1%gphiu(i,j+1)-G1%gphiu(i,j))**2) |
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152 | END DO |
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153 | END DO |
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154 | ! |
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155 | G1%e2v(:,nyfin)=G1%e2v(:,nyfin-1) |
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156 | G1%e2f(:,nyfin)=G1%e2f(:,nyfin-1) |
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157 | |
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158 | |
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159 | CALL agrif_interp(G0%e1t,G1%e1t,'T') |
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160 | G1%e1t = G1%e1t / REAL(irafx) |
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161 | CALL agrif_interp(G0%e2t,G1%e2t,'T') |
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162 | G1%e2t = G1%e2t / REAL(irafy) |
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163 | |
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164 | CALL agrif_interp(G0%e1u,G1%e1u,'U') |
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165 | G1%e1u = G1%e1u / REAL(irafx) |
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166 | CALL agrif_interp(G0%e2u,G1%e2u,'U') |
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167 | G1%e2u = G1%e2u / REAL(irafy) |
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168 | |
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169 | CALL agrif_interp(G0%e1v,G1%e1v,'V') |
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170 | G1%e1v = G1%e1v / REAL(irafx) |
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171 | CALL agrif_interp(G0%e2v,G1%e2v,'V') |
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172 | G1%e2v = G1%e2v / REAL(irafy) |
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173 | |
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174 | CALL agrif_interp(G0%e1f,G1%e1f,'F') |
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175 | G1%e1f = G1%e1f / REAL(irafx) |
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176 | CALL agrif_interp(G0%e2f,G1%e2f,'F') |
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177 | G1%e2f = G1%e2f / REAL(irafy) |
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178 | |
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179 | ! |
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180 | WHERE ( G1%glamt > 180 ) |
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181 | G1%glamt = G1%glamt - 360. |
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182 | END WHERE |
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183 | WHERE ( G1%glamf > 180 ) |
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184 | G1%glamf = G1%glamf - 360. |
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185 | END WHERE |
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186 | WHERE ( G1%glamu > 180 ) |
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187 | G1%glamu = G1%glamu - 360. |
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188 | END WHERE |
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189 | WHERE ( G1%glamv > 180 ) |
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190 | G1%glamv = G1%glamv - 360. |
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191 | END WHERE |
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192 | ! |
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193 | ! |
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194 | G1%nav_lon=G1%glamt |
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195 | G1%nav_lat=G1%gphit |
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196 | ! |
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197 | ! |
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198 | ! Write interpolation result in child coodinates file |
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199 | ! |
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200 | status = Write_Coordinates(TRIM(Child_filename),G1) |
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201 | |
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202 | ! |
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203 | WRITE(*,*) 'Child domain position : ' |
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204 | WRITE(*,*) 'latmin =',G1%gphit(3,3) |
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205 | WRITE(*,*) 'latmax =',G1%gphit(nxfin-2,nyfin-2) |
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206 | WRITE(*,*) 'lonmin =',G1%glamt(3,3) |
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207 | WRITE(*,*) 'lonmax =',G1%glamt(nxfin-2,nyfin-2) |
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208 | STOP |
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209 | END PROGRAM create_coordinate |
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