1 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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2 | ! |
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3 | ! this program is a short driver that tests the remappings using |
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4 | ! a simple analytic field. the results are written in netCDF |
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5 | ! format. |
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6 | ! |
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7 | ! CVS: $Id: scrip_test.f,v 1.6 2000/04/19 21:45:09 pwjones Exp $ |
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8 | ! |
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9 | !----------------------------------------------------------------------- |
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10 | ! |
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11 | ! Copyright (c) 1997, 1998 the Regents of the University of |
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12 | ! California. |
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13 | ! |
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14 | ! This software and ancillary information (herein called software) |
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15 | ! called SCRIP is made available under the terms described here. |
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16 | ! The software has been approved for release with associated |
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17 | ! LA-CC Number 98-45. |
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18 | ! |
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19 | ! Unless otherwise indicated, this software has been authored |
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20 | ! by an employee or employees of the University of California, |
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21 | ! operator of the Los Alamos National Laboratory under Contract |
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22 | ! No. W-7405-ENG-36 with the U.S. Department of Energy. The U.S. |
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23 | ! Government has rights to use, reproduce, and distribute this |
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24 | ! software. The public may copy and use this software without |
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25 | ! charge, provided that this Notice and any statement of authorship |
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26 | ! are reproduced on all copies. Neither the Government nor the |
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27 | ! University makes any warranty, express or implied, or assumes |
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28 | ! any liability or responsibility for the use of this software. |
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29 | ! |
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30 | ! If software is modified to produce derivative works, such modified |
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31 | ! software should be clearly marked, so as not to confuse it with |
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32 | ! the version available from Los Alamos National Laboratory. |
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33 | ! |
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34 | !*********************************************************************** |
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35 | |
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36 | program remap_test |
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37 | |
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38 | !----------------------------------------------------------------------- |
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39 | |
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40 | use kinds_mod ! defines common data types |
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41 | use constants ! defines common constants |
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42 | use iounits ! I/O unit manager |
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43 | use netcdf_mod ! netcdf I/O stuff |
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44 | use grids ! module containing grid info |
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45 | use remap_vars ! module containing remapping info |
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46 | use remap_mod ! module containing remapping routines |
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47 | use remap_read ! routines for reading remap files |
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48 | |
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49 | implicit none |
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50 | |
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51 | !----------------------------------------------------------------------- |
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52 | ! |
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53 | ! input namelist variables |
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54 | ! |
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55 | !----------------------------------------------------------------------- |
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56 | |
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57 | integer (kind=int_kind) :: |
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58 | & field_choice ! choice of field to be interpolated |
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59 | |
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60 | character (char_len) :: |
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61 | & interp_file, ! filename containing remap data (map1) |
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62 | & output_file ! filename for test results |
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63 | |
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64 | namelist /remap_inputs/ field_choice, interp_file, output_file |
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65 | |
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66 | !----------------------------------------------------------------------- |
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67 | ! |
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68 | ! local variables |
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69 | ! |
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70 | !----------------------------------------------------------------------- |
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71 | |
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72 | character (char_len) :: |
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73 | & map_name ! name for mapping from grid1 to grid2 |
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74 | |
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75 | integer (kind=int_kind) :: ! netCDF ids for files and arrays |
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76 | & ncstat, nc_outfile_id, |
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77 | & nc_srcgrdcntrlat_id, nc_srcgrdcntrlon_id, |
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78 | & nc_dstgrdcntrlat_id, nc_dstgrdcntrlon_id, |
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79 | & nc_srcgrdrank_id, nc_dstgrdrank_id, |
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80 | & nc_srcgrdimask_id, nc_dstgrdimask_id, |
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81 | & nc_srcgrdarea_id, nc_dstgrdarea_id, |
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82 | & nc_srcgrdfrac_id, nc_dstgrdfrac_id, |
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83 | & nc_srcarray_id, nc_srcgradlat_id, nc_srcgradlon_id, |
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84 | & nc_dstarray1_id, nc_dstarray1a_id, nc_dstarray2_id, |
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85 | & nc_dsterror1_id, nc_dsterror1a_id, nc_dsterror2_id |
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86 | |
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87 | integer (kind=int_kind), dimension(:), allocatable :: |
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88 | & nc_grid1size_id, nc_grid2size_id |
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89 | |
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90 | !----------------------------------------------------------------------- |
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91 | |
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92 | character (char_len) :: |
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93 | & dim_name ! netCDF dimension name |
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94 | |
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95 | integer (kind=int_kind) :: i,j,n,imin,imax,idiff, |
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96 | & ip1,im1,jp1,jm1,nx,ny, ! for computing bicub gradients |
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97 | & in,is,ie,iw,ine,inw,ise,isw, |
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98 | & iunit ! unit number for namelist file |
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99 | |
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100 | integer (kind=int_kind), dimension(:), allocatable :: |
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101 | & grid1_imask, grid2_imask, grid2_count |
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102 | |
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103 | real (kind=dbl_kind) :: |
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104 | & delew, delns, ! variables for computing bicub gradients |
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105 | & length ! length scale for cosine hill test field |
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106 | |
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107 | real (kind=dbl_kind), dimension(:), allocatable :: |
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108 | & grid1_array, |
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109 | & grid1_tmp, |
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110 | & grad1_lat, |
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111 | & grad1_lon, |
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112 | & grad1_latlon, |
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113 | & grad1_lat_zero, |
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114 | & grad1_lon_zero, |
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115 | & grid2_array, |
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116 | & grid2_err, |
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117 | & grid2_tmp |
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118 | |
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119 | !----------------------------------------------------------------------- |
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120 | ! |
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121 | ! read namelist for file and mapping info |
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122 | ! |
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123 | !----------------------------------------------------------------------- |
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124 | |
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125 | call get_unit(iunit) |
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126 | open(iunit, file='scrip_test_in', status='old', form='formatted') |
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127 | read(iunit, nml=remap_inputs) |
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128 | call release_unit(iunit) |
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129 | write(*,nml=remap_inputs) |
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130 | |
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131 | !----------------------------------------------------------------------- |
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132 | ! |
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133 | ! read remapping data |
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134 | ! |
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135 | !----------------------------------------------------------------------- |
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136 | |
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137 | call read_remap(map_name, interp_file) |
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138 | |
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139 | !----------------------------------------------------------------------- |
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140 | ! |
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141 | ! allocate arrays |
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142 | ! |
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143 | !----------------------------------------------------------------------- |
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144 | |
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145 | allocate (grid1_array (grid1_size), |
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146 | & grid1_tmp (grid1_size), |
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147 | & grad1_lat (grid1_size), |
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148 | & grad1_lon (grid1_size), |
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149 | & grad1_lat_zero (grid1_size), |
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150 | & grad1_lon_zero (grid1_size), |
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151 | & grid1_imask (grid1_size), |
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152 | & grid2_array (grid2_size), |
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153 | & grid2_err (grid2_size), |
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154 | & grid2_tmp (grid2_size), |
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155 | & grid2_imask (grid2_size), |
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156 | & grid2_count (grid2_size)) |
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157 | |
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158 | where (grid1_mask) |
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159 | grid1_imask = 1 |
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160 | elsewhere |
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161 | grid1_imask = 0 |
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162 | endwhere |
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163 | where (grid2_mask) |
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164 | grid2_imask = 1 |
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165 | elsewhere |
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166 | grid2_imask = 0 |
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167 | endwhere |
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168 | |
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169 | !----------------------------------------------------------------------- |
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170 | ! |
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171 | ! setup a NetCDF file for output |
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172 | ! |
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173 | !----------------------------------------------------------------------- |
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174 | |
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175 | !*** |
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176 | !*** create netCDF dataset |
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177 | !*** |
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178 | |
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179 | ncstat = nf_create (output_file, NF_CLOBBER, nc_outfile_id) |
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180 | call netcdf_error_handler(ncstat) |
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181 | |
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182 | ncstat = nf_put_att_text (nc_outfile_id, NF_GLOBAL, 'title', |
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183 | & len_trim(map_name), map_name) |
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184 | call netcdf_error_handler(ncstat) |
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185 | |
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186 | !*** |
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187 | !*** define grid size dimensions |
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188 | !*** |
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189 | |
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190 | allocate( nc_grid1size_id(grid1_rank), |
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191 | & nc_grid2size_id(grid2_rank)) |
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192 | |
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193 | do n=1,grid1_rank |
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194 | write(dim_name,1000) 'grid1_dim',n |
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195 | ncstat = nf_def_dim (nc_outfile_id, dim_name, |
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196 | & grid1_dims(n), nc_grid1size_id(n)) |
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197 | call netcdf_error_handler(ncstat) |
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198 | end do |
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199 | |
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200 | do n=1,grid2_rank |
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201 | write(dim_name,1000) 'grid2_dim',n |
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202 | ncstat = nf_def_dim (nc_outfile_id, dim_name, |
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203 | & grid2_dims(n), nc_grid2size_id(n)) |
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204 | call netcdf_error_handler(ncstat) |
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205 | end do |
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206 | 1000 format(a9,i1) |
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207 | |
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208 | !*** |
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209 | !*** define grid center latitude array |
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210 | !*** |
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211 | |
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212 | ncstat = nf_def_var (nc_outfile_id, 'src_grid_center_lat', |
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213 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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214 | & nc_srcgrdcntrlat_id) |
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215 | call netcdf_error_handler(ncstat) |
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216 | |
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217 | ncstat = nf_put_att_text (nc_outfile_id, nc_srcgrdcntrlat_id, |
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218 | & 'units', 7, 'radians') |
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219 | call netcdf_error_handler(ncstat) |
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220 | |
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221 | ncstat = nf_def_var (nc_outfile_id, 'dst_grid_center_lat', |
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222 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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223 | & nc_dstgrdcntrlat_id) |
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224 | call netcdf_error_handler(ncstat) |
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225 | |
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226 | ncstat = nf_put_att_text (nc_outfile_id, nc_dstgrdcntrlat_id, |
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227 | & 'units', 7, 'radians') |
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228 | call netcdf_error_handler(ncstat) |
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229 | |
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230 | !*** |
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231 | !*** define grid center longitude array |
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232 | !*** |
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233 | |
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234 | ncstat = nf_def_var (nc_outfile_id, 'src_grid_center_lon', |
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235 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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236 | & nc_srcgrdcntrlon_id) |
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237 | call netcdf_error_handler(ncstat) |
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238 | |
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239 | ncstat = nf_put_att_text (nc_outfile_id, nc_srcgrdcntrlon_id, |
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240 | & 'units', 7, 'radians') |
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241 | call netcdf_error_handler(ncstat) |
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242 | |
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243 | ncstat = nf_def_var (nc_outfile_id, 'dst_grid_center_lon', |
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244 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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245 | & nc_dstgrdcntrlon_id) |
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246 | call netcdf_error_handler(ncstat) |
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247 | |
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248 | ncstat = nf_put_att_text (nc_outfile_id, nc_dstgrdcntrlon_id, |
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249 | & 'units', 7, 'radians') |
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250 | call netcdf_error_handler(ncstat) |
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251 | |
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252 | !*** |
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253 | !*** define grid mask |
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254 | !*** |
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255 | |
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256 | ncstat = nf_def_var (nc_outfile_id, 'src_grid_imask', NF_INT, |
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257 | & grid1_rank, nc_grid1size_id, nc_srcgrdimask_id) |
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258 | call netcdf_error_handler(ncstat) |
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259 | |
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260 | ncstat = nf_put_att_text (nc_outfile_id, nc_srcgrdimask_id, |
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261 | & 'units', 8, 'unitless') |
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262 | call netcdf_error_handler(ncstat) |
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263 | |
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264 | ncstat = nf_def_var (nc_outfile_id, 'dst_grid_imask', NF_INT, |
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265 | & grid2_rank, nc_grid2size_id, nc_dstgrdimask_id) |
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266 | call netcdf_error_handler(ncstat) |
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267 | |
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268 | ncstat = nf_put_att_text (nc_outfile_id, nc_dstgrdimask_id, |
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269 | & 'units', 8, 'unitless') |
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270 | call netcdf_error_handler(ncstat) |
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271 | |
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272 | !*** |
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273 | !*** define grid area arrays |
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274 | !*** |
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275 | |
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276 | ncstat = nf_def_var (nc_outfile_id, 'src_grid_area', |
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277 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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278 | & nc_srcgrdarea_id) |
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279 | call netcdf_error_handler(ncstat) |
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280 | |
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281 | ncstat = nf_def_var (nc_outfile_id, 'dst_grid_area', |
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282 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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283 | & nc_dstgrdarea_id) |
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284 | call netcdf_error_handler(ncstat) |
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285 | |
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286 | !*** |
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287 | !*** define grid fraction arrays |
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288 | !*** |
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289 | |
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290 | ncstat = nf_def_var (nc_outfile_id, 'src_grid_frac', |
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291 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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292 | & nc_srcgrdfrac_id) |
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293 | call netcdf_error_handler(ncstat) |
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294 | |
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295 | ncstat = nf_def_var (nc_outfile_id, 'dst_grid_frac', |
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296 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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297 | & nc_dstgrdfrac_id) |
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298 | call netcdf_error_handler(ncstat) |
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299 | |
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300 | !*** |
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301 | !*** define source array |
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302 | !*** |
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303 | |
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304 | ncstat = nf_def_var (nc_outfile_id, 'src_array', |
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305 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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306 | & nc_srcarray_id) |
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307 | call netcdf_error_handler(ncstat) |
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308 | |
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309 | !*** |
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310 | !*** define gradient arrays |
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311 | !*** |
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312 | |
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313 | ncstat = nf_def_var (nc_outfile_id, 'src_grad_lat', |
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314 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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315 | & nc_srcgradlat_id) |
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316 | call netcdf_error_handler(ncstat) |
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317 | |
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318 | ncstat = nf_def_var (nc_outfile_id, 'src_grad_lon', |
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319 | & NF_DOUBLE, grid1_rank, nc_grid1size_id, |
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320 | & nc_srcgradlon_id) |
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321 | call netcdf_error_handler(ncstat) |
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322 | |
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323 | !*** |
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324 | !*** define destination arrays |
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325 | !*** |
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326 | |
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327 | ncstat = nf_def_var (nc_outfile_id, 'dst_array1', |
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328 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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329 | & nc_dstarray1_id) |
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330 | call netcdf_error_handler(ncstat) |
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331 | |
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332 | ncstat = nf_def_var (nc_outfile_id, 'dst_array1a', |
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333 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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334 | & nc_dstarray1a_id) |
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335 | call netcdf_error_handler(ncstat) |
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336 | |
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337 | ncstat = nf_def_var (nc_outfile_id, 'dst_array2', |
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338 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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339 | & nc_dstarray2_id) |
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340 | call netcdf_error_handler(ncstat) |
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341 | |
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342 | !*** |
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343 | !*** define error arrays |
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344 | !*** |
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345 | |
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346 | ncstat = nf_def_var (nc_outfile_id, 'dst_error1', |
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347 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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348 | & nc_dsterror1_id) |
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349 | call netcdf_error_handler(ncstat) |
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350 | |
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351 | ncstat = nf_def_var (nc_outfile_id, 'dst_error1a', |
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352 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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353 | & nc_dsterror1a_id) |
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354 | call netcdf_error_handler(ncstat) |
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355 | |
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356 | ncstat = nf_def_var (nc_outfile_id, 'dst_error2', |
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357 | & NF_DOUBLE, grid2_rank, nc_grid2size_id, |
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358 | & nc_dsterror2_id) |
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359 | call netcdf_error_handler(ncstat) |
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360 | |
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361 | !*** |
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362 | !*** end definition stage |
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363 | !*** |
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364 | |
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365 | ncstat = nf_enddef(nc_outfile_id) |
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366 | call netcdf_error_handler(ncstat) |
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367 | |
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368 | !----------------------------------------------------------------------- |
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369 | ! |
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370 | ! write some grid info |
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371 | ! |
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372 | !----------------------------------------------------------------------- |
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373 | |
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374 | !*** |
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375 | !*** write grid center latitude array |
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376 | !*** |
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377 | |
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378 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgrdcntrlat_id, |
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379 | & grid1_center_lat) |
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380 | call netcdf_error_handler(ncstat) |
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381 | |
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382 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstgrdcntrlat_id, |
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383 | & grid2_center_lat) |
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384 | call netcdf_error_handler(ncstat) |
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385 | |
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386 | !*** |
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387 | !*** write grid center longitude array |
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388 | !*** |
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389 | |
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390 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgrdcntrlon_id, |
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391 | & grid1_center_lon) |
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392 | call netcdf_error_handler(ncstat) |
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393 | |
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394 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstgrdcntrlon_id, |
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395 | & grid2_center_lon) |
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396 | call netcdf_error_handler(ncstat) |
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397 | |
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398 | !*** |
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399 | !*** write grid mask |
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400 | !*** |
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401 | |
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402 | ncstat = nf_put_var_int(nc_outfile_id, nc_srcgrdimask_id, |
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403 | & grid1_imask) |
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404 | call netcdf_error_handler(ncstat) |
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405 | |
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406 | ncstat = nf_put_var_int(nc_outfile_id, nc_dstgrdimask_id, |
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407 | & grid2_imask) |
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408 | call netcdf_error_handler(ncstat) |
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409 | |
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410 | !*** |
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411 | !*** define grid area arrays |
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412 | !*** |
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413 | |
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414 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgrdarea_id, |
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415 | & grid1_area) |
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416 | call netcdf_error_handler(ncstat) |
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417 | |
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418 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstgrdarea_id, |
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419 | & grid2_area) |
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420 | call netcdf_error_handler(ncstat) |
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421 | |
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422 | !*** |
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423 | !*** define grid fraction arrays |
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424 | !*** |
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425 | |
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426 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgrdfrac_id, |
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427 | & grid1_frac) |
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428 | call netcdf_error_handler(ncstat) |
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429 | |
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430 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstgrdfrac_id, |
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431 | & grid2_frac) |
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432 | call netcdf_error_handler(ncstat) |
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433 | |
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434 | !----------------------------------------------------------------------- |
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435 | ! |
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436 | ! set up fields for test cases based on user choice |
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437 | ! |
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438 | !----------------------------------------------------------------------- |
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439 | |
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440 | select case (field_choice) |
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441 | case(1) !*** cosine hill at lon=pi and lat=0 |
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442 | |
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443 | length = 0.1*pi2 |
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444 | |
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445 | grid1_array = cos(grid1_center_lat)*cos(grid1_center_lon) |
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446 | grid2_array = cos(grid2_center_lat)*cos(grid2_center_lon) |
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447 | |
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448 | grid1_tmp = acos(-grid1_array)/length |
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449 | grid2_tmp = acos(-grid2_array)/length |
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450 | |
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451 | where (grid1_tmp <= one) |
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452 | grad1_lat = (pi/length)*sin(pi*grid1_tmp)* |
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453 | & sin(grid1_center_lat)*cos(grid1_center_lon)/ |
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454 | & sqrt(one-grid1_array**2) |
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455 | grad1_lon = (pi/length)*sin(pi*grid1_tmp)* |
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456 | & sin(grid1_center_lon)/ |
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457 | & sqrt(one-grid1_array**2) |
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458 | grid1_array = two + cos(pi*grid1_tmp) |
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459 | elsewhere |
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460 | grid1_array = one |
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461 | grad1_lat = zero |
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462 | grad1_lon = zero |
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463 | endwhere |
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464 | |
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465 | where (grid2_tmp <= one) |
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466 | grid2_array = two + cos(pi*grid2_tmp) |
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467 | elsewhere |
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468 | grid2_array = one |
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469 | endwhere |
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470 | |
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471 | where (.not. grid1_mask) |
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472 | grid1_array = zero |
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473 | grad1_lat = zero |
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474 | grad1_lon = zero |
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475 | end where |
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476 | |
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477 | where (grid2_frac < .001) grid2_array = zero |
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478 | |
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479 | case(2) !*** pseudo-spherical harmonic l=2,m=2 |
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480 | |
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481 | where (grid1_mask) |
---|
482 | grid1_array = two + cos(grid1_center_lat)**2* |
---|
483 | & cos(two*grid1_center_lon) |
---|
484 | grad1_lat = -sin(two*grid1_center_lat)* |
---|
485 | & cos(two*grid1_center_lon) |
---|
486 | grad1_lon = -two*cos(grid1_center_lat)* |
---|
487 | & sin(two*grid1_center_lon) |
---|
488 | elsewhere |
---|
489 | grid1_array = zero |
---|
490 | grad1_lat = zero |
---|
491 | grad1_lon = zero |
---|
492 | end where |
---|
493 | |
---|
494 | where (grid2_frac > .001) |
---|
495 | grid2_array = two + cos(grid2_center_lat)**2* |
---|
496 | & cos(two*grid2_center_lon) |
---|
497 | elsewhere |
---|
498 | grid2_array = zero |
---|
499 | end where |
---|
500 | |
---|
501 | case(3) !*** pseudo-spherical harmonic l=32, m=16 |
---|
502 | |
---|
503 | where (grid1_mask) |
---|
504 | grid1_array = two + sin(two*grid1_center_lat)**16* |
---|
505 | & cos(16.*grid1_center_lon) |
---|
506 | grad1_lat = 32.*sin(two*grid1_center_lat)**15* |
---|
507 | & cos(two*grid1_center_lat)* |
---|
508 | & cos(16.*grid1_center_lon) |
---|
509 | grad1_lon = -32.*sin(two*grid1_center_lat)**15* |
---|
510 | & sin(grid1_center_lat)* |
---|
511 | & sin(16.*grid1_center_lon) |
---|
512 | elsewhere |
---|
513 | grid1_array = zero |
---|
514 | grad1_lat = zero |
---|
515 | grad1_lon = zero |
---|
516 | end where |
---|
517 | |
---|
518 | where (grid2_frac > .001) |
---|
519 | grid2_array = two + sin(two*grid2_center_lat)**16* |
---|
520 | & cos(16.*grid2_center_lon) |
---|
521 | elsewhere |
---|
522 | grid2_array = zero |
---|
523 | end where |
---|
524 | |
---|
525 | case default |
---|
526 | |
---|
527 | stop 'Bad choice for field to interpolate' |
---|
528 | |
---|
529 | end select |
---|
530 | |
---|
531 | !----------------------------------------------------------------------- |
---|
532 | ! |
---|
533 | ! if bicubic, we need 3 gradients in logical space |
---|
534 | ! |
---|
535 | !----------------------------------------------------------------------- |
---|
536 | |
---|
537 | if (map_type == map_type_bicubic) then |
---|
538 | allocate (grad1_latlon (grid1_size)) |
---|
539 | |
---|
540 | nx = grid1_dims(1) |
---|
541 | ny = grid1_dims(2) |
---|
542 | |
---|
543 | do n=1,grid1_size |
---|
544 | |
---|
545 | grad1_lat(n) = zero |
---|
546 | grad1_lon(n) = zero |
---|
547 | grad1_latlon(n) = zero |
---|
548 | |
---|
549 | if (grid1_mask(n)) then |
---|
550 | |
---|
551 | delew = half |
---|
552 | delns = half |
---|
553 | |
---|
554 | j = (n-1)/nx + 1 |
---|
555 | i = n - (j-1)*nx |
---|
556 | |
---|
557 | ip1 = i+1 |
---|
558 | im1 = i-1 |
---|
559 | jp1 = j+1 |
---|
560 | jm1 = j-1 |
---|
561 | |
---|
562 | if (ip1 > nx) ip1 = ip1 - nx |
---|
563 | if (im1 < 1 ) im1 = nx |
---|
564 | if (jp1 > ny) then |
---|
565 | jp1 = j |
---|
566 | delns = one |
---|
567 | endif |
---|
568 | if (jm1 < 1 ) then |
---|
569 | jm1 = j |
---|
570 | delns = one |
---|
571 | endif |
---|
572 | |
---|
573 | in = (jp1-1)*nx + i |
---|
574 | is = (jm1-1)*nx + i |
---|
575 | ie = (j -1)*nx + ip1 |
---|
576 | iw = (j -1)*nx + im1 |
---|
577 | |
---|
578 | ine = (jp1-1)*nx + ip1 |
---|
579 | inw = (jp1-1)*nx + im1 |
---|
580 | ise = (jm1-1)*nx + ip1 |
---|
581 | isw = (jm1-1)*nx + im1 |
---|
582 | |
---|
583 | !*** compute i-gradient |
---|
584 | |
---|
585 | if (.not. grid1_mask(ie)) then |
---|
586 | ie = n |
---|
587 | delew = one |
---|
588 | endif |
---|
589 | if (.not. grid1_mask(iw)) then |
---|
590 | iw = n |
---|
591 | delew = one |
---|
592 | endif |
---|
593 | |
---|
594 | grad1_lat(n) = delew*(grid1_array(ie) - grid1_array(iw)) |
---|
595 | |
---|
596 | !*** compute j-gradient |
---|
597 | |
---|
598 | if (.not. grid1_mask(in)) then |
---|
599 | in = n |
---|
600 | delns = one |
---|
601 | endif |
---|
602 | if (.not. grid1_mask(is)) then |
---|
603 | is = n |
---|
604 | delns = one |
---|
605 | endif |
---|
606 | |
---|
607 | grad1_lon(n) = delns*(grid1_array(in) - grid1_array(is)) |
---|
608 | |
---|
609 | !*** compute ij-gradient |
---|
610 | |
---|
611 | delew = half |
---|
612 | if (jp1 == j .or. jm1 == j) then |
---|
613 | delns = one |
---|
614 | else |
---|
615 | delns = half |
---|
616 | endif |
---|
617 | |
---|
618 | if (.not. grid1_mask(ine)) then |
---|
619 | if (in /= n) then |
---|
620 | ine = in |
---|
621 | delew = one |
---|
622 | else if (ie /= n) then |
---|
623 | ine = ie |
---|
624 | inw = iw |
---|
625 | if (inw == n) delew = one |
---|
626 | delns = one |
---|
627 | else |
---|
628 | ine = n |
---|
629 | inw = iw |
---|
630 | delew = one |
---|
631 | delns = one |
---|
632 | endif |
---|
633 | endif |
---|
634 | |
---|
635 | if (.not. grid1_mask(inw)) then |
---|
636 | if (in /= n) then |
---|
637 | inw = in |
---|
638 | delew = one |
---|
639 | else if (iw /= n) then |
---|
640 | inw = iw |
---|
641 | ine = ie |
---|
642 | if (ie == n) delew = one |
---|
643 | delns = one |
---|
644 | else |
---|
645 | inw = n |
---|
646 | ine = ie |
---|
647 | delew = one |
---|
648 | delns = one |
---|
649 | endif |
---|
650 | endif |
---|
651 | |
---|
652 | grad1_lat_zero(n) = delew*(grid1_array(ine) - |
---|
653 | & grid1_array(inw)) |
---|
654 | |
---|
655 | if (.not. grid1_mask(ise)) then |
---|
656 | if (is /= n) then |
---|
657 | ise = is |
---|
658 | delew = one |
---|
659 | else if (ie /= n) then |
---|
660 | ise = ie |
---|
661 | isw = iw |
---|
662 | if (isw == n) delew = one |
---|
663 | delns = one |
---|
664 | else |
---|
665 | ise = n |
---|
666 | isw = iw |
---|
667 | delew = one |
---|
668 | delns = one |
---|
669 | endif |
---|
670 | endif |
---|
671 | |
---|
672 | if (.not. grid1_mask(isw)) then |
---|
673 | if (is /= n) then |
---|
674 | isw = is |
---|
675 | delew = one |
---|
676 | else if (iw /= n) then |
---|
677 | isw = iw |
---|
678 | ise = ie |
---|
679 | if (ie == n) delew = one |
---|
680 | delns = one |
---|
681 | else |
---|
682 | isw = n |
---|
683 | ise = ie |
---|
684 | delew = one |
---|
685 | delns = one |
---|
686 | endif |
---|
687 | endif |
---|
688 | |
---|
689 | grad1_lon_zero(n) = delew*(grid1_array(ise) - |
---|
690 | & grid1_array(isw)) |
---|
691 | |
---|
692 | grad1_latlon(n) = delns*(grad1_lat_zero(n) - |
---|
693 | & grad1_lon_zero(n)) |
---|
694 | |
---|
695 | endif |
---|
696 | enddo |
---|
697 | endif |
---|
698 | |
---|
699 | !----------------------------------------------------------------------- |
---|
700 | ! |
---|
701 | ! test a first-order map from grid1 to grid2 |
---|
702 | ! |
---|
703 | !----------------------------------------------------------------------- |
---|
704 | |
---|
705 | grad1_lat_zero = zero |
---|
706 | grad1_lon_zero = zero |
---|
707 | |
---|
708 | if (map_type /= map_type_bicubic) then |
---|
709 | call remap(grid2_tmp, wts_map1, grid2_add_map1, grid1_add_map1, |
---|
710 | & grid1_array) |
---|
711 | else |
---|
712 | call remap(grid2_tmp, wts_map1, grid2_add_map1, grid1_add_map1, |
---|
713 | & grid1_array, src_grad1=grad1_lat, |
---|
714 | & src_grad2=grad1_lon, |
---|
715 | & src_grad3=grad1_latlon) |
---|
716 | endif |
---|
717 | |
---|
718 | if (map_type == map_type_conserv) then |
---|
719 | select case (norm_opt) |
---|
720 | case (norm_opt_none) |
---|
721 | grid2_err = grid2_frac*grid2_area |
---|
722 | where (grid2_err /= zero) |
---|
723 | grid2_tmp = grid2_tmp/grid2_err |
---|
724 | else where |
---|
725 | grid2_tmp = zero |
---|
726 | end where |
---|
727 | case (norm_opt_frcarea) |
---|
728 | case (norm_opt_dstarea) |
---|
729 | where (grid2_frac /= zero) |
---|
730 | grid2_tmp = grid2_tmp/grid2_frac |
---|
731 | else where |
---|
732 | grid2_tmp = zero |
---|
733 | end where |
---|
734 | end select |
---|
735 | end if |
---|
736 | |
---|
737 | where (grid2_frac > .999) |
---|
738 | grid2_err = (grid2_tmp - grid2_array)/grid2_array |
---|
739 | elsewhere |
---|
740 | grid2_err = zero |
---|
741 | end where |
---|
742 | |
---|
743 | print *,'First order mapping from grid1 to grid2:' |
---|
744 | print *,'----------------------------------------' |
---|
745 | print *,'Grid1 min,max: ',minval(grid1_array),maxval(grid1_array) |
---|
746 | print *,'Grid2 min,max: ',minval(grid2_tmp ),maxval(grid2_tmp ) |
---|
747 | print *,' Err2 min,max: ',minval(grid2_err),maxval(grid2_err) |
---|
748 | print *,' Err2 mean: ',sum(abs(grid2_err))/ |
---|
749 | & count(grid2_frac > .999) |
---|
750 | |
---|
751 | !*** |
---|
752 | !*** Conservation Test |
---|
753 | !*** |
---|
754 | |
---|
755 | print *,'Conservation:' |
---|
756 | print *,'Grid1 Integral = ',sum(grid1_array*grid1_area*grid1_frac) |
---|
757 | print *,'Grid2 Integral = ',sum(grid2_tmp *grid2_area*grid2_frac) |
---|
758 | |
---|
759 | !----------------------------------------------------------------------- |
---|
760 | ! |
---|
761 | ! write results to NetCDF file |
---|
762 | ! |
---|
763 | !----------------------------------------------------------------------- |
---|
764 | |
---|
765 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcarray_id, |
---|
766 | & grid1_array) |
---|
767 | call netcdf_error_handler(ncstat) |
---|
768 | |
---|
769 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstarray1_id, |
---|
770 | & grid2_tmp ) |
---|
771 | call netcdf_error_handler(ncstat) |
---|
772 | |
---|
773 | ncstat = nf_put_var_double(nc_outfile_id, nc_dsterror1_id, |
---|
774 | & grid2_err) |
---|
775 | call netcdf_error_handler(ncstat) |
---|
776 | |
---|
777 | !----------------------------------------------------------------------- |
---|
778 | ! |
---|
779 | ! for conservative mappings: |
---|
780 | ! test a second-order map from grid1 to grid2 with only lat grads |
---|
781 | ! |
---|
782 | !----------------------------------------------------------------------- |
---|
783 | |
---|
784 | if (map_type == map_type_conserv) then |
---|
785 | |
---|
786 | call remap(grid2_tmp, wts_map1, grid2_add_map1, grid1_add_map1, |
---|
787 | & grid1_array, src_grad1=grad1_lat, |
---|
788 | & src_grad2=grad1_lon_zero) |
---|
789 | |
---|
790 | select case (norm_opt) |
---|
791 | case (norm_opt_none) |
---|
792 | grid2_err = grid2_frac*grid2_area |
---|
793 | where (grid2_err /= zero) |
---|
794 | grid2_tmp = grid2_tmp/grid2_err |
---|
795 | else where |
---|
796 | grid2_tmp = zero |
---|
797 | end where |
---|
798 | case (norm_opt_frcarea) |
---|
799 | case (norm_opt_dstarea) |
---|
800 | where (grid2_frac /= zero) |
---|
801 | grid2_tmp = grid2_tmp/grid2_frac |
---|
802 | else where |
---|
803 | grid2_tmp = zero |
---|
804 | end where |
---|
805 | end select |
---|
806 | |
---|
807 | where (grid2_frac > .999) |
---|
808 | grid2_err = (grid2_tmp - grid2_array)/grid2_array |
---|
809 | elsewhere |
---|
810 | grid2_err = zero |
---|
811 | end where |
---|
812 | |
---|
813 | print *,'Second order mapping from grid1 to grid2 (lat only):' |
---|
814 | print *,'----------------------------------------' |
---|
815 | print *,'Grid1 min,max: ',minval(grid1_array), |
---|
816 | & maxval(grid1_array) |
---|
817 | print *,'Grid2 min,max: ',minval(grid2_tmp ), |
---|
818 | & maxval(grid2_tmp ) |
---|
819 | print *,' Err2 min,max: ',minval(grid2_err),maxval(grid2_err) |
---|
820 | print *,' Err2 mean: ',sum(abs(grid2_err))/ |
---|
821 | & count(grid2_frac > .999) |
---|
822 | |
---|
823 | !*** |
---|
824 | !*** Conservation Test |
---|
825 | !*** |
---|
826 | |
---|
827 | print *,'Conservation:' |
---|
828 | print *,'Grid1 Integral = ', |
---|
829 | & sum(grid1_array*grid1_area*grid1_frac) |
---|
830 | print *,'Grid2 Integral = ', |
---|
831 | & sum(grid2_tmp *grid2_area*grid2_frac) |
---|
832 | |
---|
833 | !----------------------------------------------------------------------- |
---|
834 | ! |
---|
835 | ! write results to NetCDF file |
---|
836 | ! |
---|
837 | !----------------------------------------------------------------------- |
---|
838 | |
---|
839 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgradlat_id, |
---|
840 | & grad1_lat) |
---|
841 | call netcdf_error_handler(ncstat) |
---|
842 | |
---|
843 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstarray1a_id, |
---|
844 | & grid2_tmp ) |
---|
845 | call netcdf_error_handler(ncstat) |
---|
846 | |
---|
847 | ncstat = nf_put_var_double(nc_outfile_id, nc_dsterror1a_id, |
---|
848 | & grid2_err) |
---|
849 | call netcdf_error_handler(ncstat) |
---|
850 | |
---|
851 | !----------------------------------------------------------------------- |
---|
852 | ! |
---|
853 | ! for conservative mappings: |
---|
854 | ! test a second-order map from grid1 to grid2 |
---|
855 | ! |
---|
856 | !----------------------------------------------------------------------- |
---|
857 | |
---|
858 | call remap(grid2_tmp,wts_map1,grid2_add_map1,grid1_add_map1, |
---|
859 | & grid1_array, src_grad1=grad1_lat, |
---|
860 | & src_grad2=grad1_lon) |
---|
861 | |
---|
862 | select case (norm_opt) |
---|
863 | case (norm_opt_none) |
---|
864 | grid2_err = grid2_frac*grid2_area |
---|
865 | where (grid2_err /= zero) |
---|
866 | grid2_tmp = grid2_tmp/grid2_err |
---|
867 | else where |
---|
868 | grid2_tmp = zero |
---|
869 | end where |
---|
870 | case (norm_opt_frcarea) |
---|
871 | case (norm_opt_dstarea) |
---|
872 | where (grid2_frac /= zero) |
---|
873 | grid2_tmp = grid2_tmp/grid2_frac |
---|
874 | else where |
---|
875 | grid2_tmp = zero |
---|
876 | end where |
---|
877 | end select |
---|
878 | |
---|
879 | where (grid2_frac > .999) |
---|
880 | grid2_err = (grid2_tmp - grid2_array)/grid2_array |
---|
881 | elsewhere |
---|
882 | grid2_err = zero |
---|
883 | end where |
---|
884 | |
---|
885 | print *,'Second order mapping from grid1 to grid2:' |
---|
886 | print *,'-----------------------------------------' |
---|
887 | print *,'Grid1 min,max: ',minval(grid1_array), |
---|
888 | & maxval(grid1_array) |
---|
889 | print *,'Grid2 min,max: ',minval(grid2_tmp ), |
---|
890 | & maxval(grid2_tmp ) |
---|
891 | print *,' Err2 min,max: ',minval(grid2_err),maxval(grid2_err) |
---|
892 | print *,' Err2 mean: ',sum(abs(grid2_err))/ |
---|
893 | & count(grid2_frac > .999) |
---|
894 | |
---|
895 | !*** |
---|
896 | !*** Conservation Test |
---|
897 | !*** |
---|
898 | |
---|
899 | print *,'Conservation:' |
---|
900 | print *,'Grid1 Integral = ', |
---|
901 | & sum(grid1_array*grid1_area*grid1_frac) |
---|
902 | print *,'Grid2 Integral = ', |
---|
903 | & sum(grid2_tmp *grid2_area*grid2_frac) |
---|
904 | |
---|
905 | !----------------------------------------------------------------------- |
---|
906 | ! |
---|
907 | ! write results to NetCDF file |
---|
908 | ! |
---|
909 | !----------------------------------------------------------------------- |
---|
910 | |
---|
911 | ncstat = nf_put_var_double(nc_outfile_id, nc_srcgradlon_id, |
---|
912 | & grad1_lon) |
---|
913 | call netcdf_error_handler(ncstat) |
---|
914 | |
---|
915 | ncstat = nf_put_var_double(nc_outfile_id, nc_dstarray2_id, |
---|
916 | & grid2_tmp ) |
---|
917 | call netcdf_error_handler(ncstat) |
---|
918 | |
---|
919 | ncstat = nf_put_var_double(nc_outfile_id, nc_dsterror2_id, |
---|
920 | & grid2_err) |
---|
921 | call netcdf_error_handler(ncstat) |
---|
922 | |
---|
923 | endif |
---|
924 | |
---|
925 | !----------------------------------------------------------------------- |
---|
926 | ! |
---|
927 | ! close netCDF file |
---|
928 | ! |
---|
929 | !----------------------------------------------------------------------- |
---|
930 | |
---|
931 | ncstat = nf_close(nc_outfile_id) |
---|
932 | call netcdf_error_handler(ncstat) |
---|
933 | |
---|
934 | !----------------------------------------------------------------------- |
---|
935 | ! |
---|
936 | ! calculate some statistics |
---|
937 | ! |
---|
938 | !----------------------------------------------------------------------- |
---|
939 | |
---|
940 | grid2_count = zero |
---|
941 | grid2_tmp = zero |
---|
942 | grid2_err = zero |
---|
943 | |
---|
944 | print *,'number of sparse matrix entries ',num_links_map1 |
---|
945 | do n=1,num_links_map1 |
---|
946 | grid2_count(grid2_add_map1(n)) = |
---|
947 | & grid2_count(grid2_add_map1(n)) + 1 |
---|
948 | if (wts_map1(1,n) > one .or. wts_map1(1,n) < zero) then |
---|
949 | grid2_tmp(grid2_add_map1(n)) = |
---|
950 | & grid2_tmp(grid2_add_map1(n)) + 1 |
---|
951 | grid2_err(grid2_add_map1(n)) = max(abs(wts_map1(1,n)), |
---|
952 | & grid2_err(grid2_add_map1(n)) ) |
---|
953 | endif |
---|
954 | end do |
---|
955 | |
---|
956 | do n=1,grid2_size |
---|
957 | if (grid2_tmp(n) > zero) print *,n,grid2_err(n) |
---|
958 | end do |
---|
959 | |
---|
960 | imin = minval(grid2_count, mask=(grid2_count > 0)) |
---|
961 | imax = maxval(grid2_count) |
---|
962 | idiff = (imax - imin)/10 + 1 |
---|
963 | print *,'total number of dest cells ',grid2_size |
---|
964 | print *,'number of cells participating in remap ', |
---|
965 | & count(grid2_count > zero) |
---|
966 | print *,'min no of entries/row = ',imin |
---|
967 | print *,'max no of entries/row = ',imax |
---|
968 | |
---|
969 | imax = imin + idiff |
---|
970 | do n=1,10 |
---|
971 | print *,'num of rows with entries between ',imin,' - ',imax-1, |
---|
972 | & count(grid2_count >= imin .and. grid2_count < imax) |
---|
973 | imin = imin + idiff |
---|
974 | imax = imax + idiff |
---|
975 | end do |
---|
976 | |
---|
977 | !----------------------------------------------------------------------- |
---|
978 | |
---|
979 | end program remap_test |
---|
980 | |
---|
981 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
---|