1 | # -*- Mode: python -*- |
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2 | import netCDF4 |
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3 | import numpy as np |
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4 | import nemo |
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5 | from scipy import ndimage |
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6 | import sys, os, platform, argparse, textwrap, time |
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7 | |
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8 | zero = np.dtype('float64').type(0.0) |
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9 | zone = np.dtype('float64').type(1.0) |
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10 | epsfrac = np.dtype('float64').type(1.0E-10) |
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11 | pi = np.pi |
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12 | rad = pi/np.dtype('float64').type(180.0) |
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13 | ra = np.dtype('float64').type(6400000.0) # Earth radius |
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14 | |
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15 | def geodist (plon1, plat1, plon2, plat2) : |
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16 | """Distance between two points (on sphere)""" |
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17 | zs = np.sin (rad*plat1) * np.sin (rad*plat2) + np.cos (rad*plat1) * np.cos (rad*plat2) * np.cos(rad*(plon2-plon1)) |
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18 | zs = np.maximum (-zone, np.minimum (zone, zs)) |
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19 | geodist = np.arccos (zs) |
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20 | return geodist |
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21 | |
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22 | ### |
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23 | ### A partir d'un fichier de poids, complete avec les rivieres et |
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24 | ### les poids pour le run off |
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25 | ### On met a zero les poids sur les points non cotiers, et on renormalise |
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26 | ### |
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27 | |
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28 | |
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29 | ### Lecture de la ligne de comande |
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30 | # SVN information |
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31 | __Author__ = "$Author: omamce $" |
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32 | __Date__ = "$Date: 2018-10-25 17:59:40 +0200 (Thu, 25 Oct 2018) $" |
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33 | __Revision__ = "$Revision: 4097 $" |
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34 | __Id__ = "$Id: CalvingWeights.py 4097 2018-10-25 15:59:40Z omamce $" |
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35 | __HeadURL__ = "$HeadURL: http://forge.ipsl.jussieu.fr/igcmg/svn/TOOLS/MOSAIX/CalvingWeights.py $" |
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36 | __SVN_Date__ = "$SVN_Date: $" |
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37 | |
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38 | ### |
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39 | |
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40 | ### ===== Handling command line parameters ================================================== |
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41 | # Creating a parser |
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42 | parser = argparse.ArgumentParser ( |
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43 | description = """Compute calving weights""", |
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44 | epilog='-------- This is the end of the help message --------') |
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45 | |
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46 | # Adding arguments |
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47 | parser.add_argument ('--oce' , help='oce model name', type=str, default='eORCA1.2', choices=['ORCA2.3', 'eORCA1.2', 'eORCA025'] ) |
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48 | parser.add_argument ('--atm' , help='atm model name (LMD*)', type=str, default='LMD9695' ) |
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49 | parser.add_argument ('--atmCoastWidth', help='width of the coastal band in atmosphere (in grid points)', default=1 ) |
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50 | parser.add_argument ('--oceCoastWidth', help='width of the coastal band in ocean (in grid points)', default=1 ) |
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51 | parser.add_argument ('--grids', help='grids file name', default='grids.nc' ) |
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52 | parser.add_argument ('--areas', help='masks file name', default='areas.nc' ) |
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53 | parser.add_argument ('--masks', help='areas file name', default='masks.nc' ) |
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54 | parser.add_argument ('--o2a' , help='o2a file name', default='o2a.nc' ) |
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55 | parser.add_argument ('--output', help='output rmp file name', default='rmp_tlmd_to_torc_runoff.nc' ) |
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56 | |
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57 | |
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58 | # Parse command line |
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59 | myargs = parser.parse_args() |
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60 | |
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61 | # |
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62 | grids = myargs.grids |
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63 | areas = myargs.areas |
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64 | masks = myargs.masks |
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65 | o2a = myargs.o2a |
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66 | |
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67 | # Model Names |
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68 | atm_Name = myargs.atm |
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69 | oce_Name = myargs.oce |
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70 | # Largeur de la bande cotiere cote atm |
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71 | atmCoastWidth = myargs.atmCoastWidth |
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72 | # Largeur de la bande cotiere cote oce |
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73 | oceCoastWidth = myargs.oceCoastWidth |
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74 | |
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75 | |
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76 | ### Read coordinates of all models |
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77 | ### |
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78 | |
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79 | diaFile = netCDF4.Dataset ( o2a ) |
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80 | gridFile = netCDF4.Dataset ( grids ) |
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81 | areaFile = netCDF4.Dataset ( areas ) |
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82 | maskFile = netCDF4.Dataset ( masks ) |
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83 | |
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84 | o2aFrac = diaFile ['field01_dst'][:].filled() |
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85 | o2aFrac = np.where ( np.abs(o2aFrac) < 1E10, o2aFrac, 0.0) |
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86 | |
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87 | atm_grid_center_lat = gridFile['tlmd.lat'][:].filled() |
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88 | atm_grid_center_lon = gridFile['tlmd.lon'][:].filled() |
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89 | atm_grid_corner_lat = gridFile['tlmd.cla'][:].filled() |
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90 | atm_grid_corner_lon = gridFile['tlmd.clo'][:].filled() |
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91 | |
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92 | atm_grid_area = areaFile['tlmd.srf'][:].filled() |
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93 | atm_grid_imask = 1-maskFile['tlmd.msk'][:].squeeze().filled() |
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94 | atm_grid_dims = atm_grid_area.shape |
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95 | (atm_nvertex, atm_jpj, atm_jpi) = atm_grid_corner_lat.shape |
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96 | if atm_jpi == 1 : atm_perio = 0 # Icosahedre |
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97 | else : atm_perio = 1 # |
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98 | atm_grid_pmask = nemo.lbc_mask (atm_grid_imask, 'T', atm_perio) |
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99 | atm_address = np.reshape ( np.arange(atm_jpj*atm_jpi), (atm_jpj, atm_jpi) ) |
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100 | atm_grid_size = atm_jpj*atm_jpi |
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101 | |
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102 | oce_grid_center_lat = gridFile['torc.lat'][:].filled() |
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103 | oce_grid_center_lon = gridFile['torc.lon'][:].filled() |
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104 | oce_grid_corner_lat = gridFile['torc.cla'][:].filled() |
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105 | oce_grid_corner_lon = gridFile['torc.clo'][:].filled() |
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106 | oce_grid_area = areaFile['torc.srf'][:].filled() |
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107 | oce_grid_imask = 1-maskFile['torc.msk'][:].filled() |
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108 | oce_grid_dims = oce_grid_area.shape |
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109 | (oce_nvertex, oce_jpj, oce_jpi) = oce_grid_corner_lat.shape ; jpon=oce_jpj*oce_jpj |
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110 | if oce_jpi == 182 : oce_perio = 4 # ORCA 2 |
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111 | if oce_jpi == 362 : oce_perio = 6 # ORCA 1 |
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112 | if oce_jpi == 1442 : oce_perio = 6 # ORCA 025 |
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113 | oce_grid_pmask = nemo.lbc_mask (oce_grid_imask, 'T', oce_perio) |
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114 | oce_address = np.reshape ( np.arange(oce_jpj*oce_jpi), (oce_jpj, oce_jpi) ) |
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115 | oce_grid_size = oce_jpj*oce_jpi |
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116 | |
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117 | print ('Calculs points terre/oce/cote sur grille atmosphere' ) |
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118 | |
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119 | # Fill closed sea with image processing library |
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120 | oce_grid_imask = nemo.lbc_mask ( 1-ndimage.binary_fill_holes (1-nemo.lbc(oce_grid_imask, nperio=oce_perio, cd_type='T')), nperio=oce_perio, cd_type='T' ) |
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121 | |
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122 | print ("Determination d'une bande cotiere ocean") |
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123 | |
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124 | oceLand = np.where (oce_grid_imask[:] < 0.5, True, False) |
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125 | oceOcean = np.where (oce_grid_imask[:] > 0.5, True, False) |
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126 | |
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127 | oceCoast = np.where (ndimage.uniform_filter(oceOcean.astype(float), size=1+2*oceCoastWidth)<1.0,True,False) & oceOcean |
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128 | oceCoast = nemo.lbc_mask (oceCoast, oce_perio, 'T') |
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129 | |
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130 | print ('Nombre de point oceLand : ' + str(oceLand.sum()) ) |
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131 | print ('Nombre de point oceOcean : ' + str(oceOcean.sum()) ) |
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132 | print ('Nombre de point oceCoast : ' + str(oceCoast.sum()) ) |
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133 | |
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134 | # Faire une liste de ces points |
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135 | oceCoast_grid_center_lon = oce_grid_center_lon[oceCoast] |
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136 | oceCoast_grid_center_lat = oce_grid_center_lat[oceCoast] |
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137 | oceCoast_grid_area = oce_grid_area [oceCoast] |
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138 | oceCoast_grid_imask = oce_grid_imask [oceCoast] |
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139 | oceCoast_grid_pmask = oce_grid_pmask [oceCoast] |
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140 | oceCoast_address = oce_address [oceCoast] |
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141 | |
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142 | |
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143 | print ("Determination d'une bande cotiere atmosphere " ) |
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144 | atmLand = np.where (o2aFrac[:] < epsfrac, True, False) |
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145 | atmFrac = np.where (o2aFrac[:] < epsfrac, True, False) & np.where (o2aFrac[:] < (zone-epsfrac), True, False) |
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146 | atmOcean = np.where (o2aFrac[:] < (zone-epsfrac), True, False) |
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147 | |
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148 | atmCoast = np.where (ndimage.uniform_filter(atmLand.astype(float), size=1+2*atmCoastWidth)<1.0,True,False) & atmLand |
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149 | atmCoast = nemo.lbc_mask (atmCoast, 1, 'T') |
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150 | |
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151 | print ('Nombre de point atmLand : ' + str(atmLand.sum()) ) |
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152 | print ('Nombre de point atmOcean : ' + str(atmOcean.sum()) ) |
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153 | print ('Nombre de point atmCoast : ' + str(atmCoast.sum()) ) |
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154 | |
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155 | # Faire une liste de ces points |
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156 | atmCoast_grid_center_lon = atm_grid_center_lon[atmCoast] |
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157 | atmCoast_grid_center_lat = atm_grid_center_lat[atmCoast] |
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158 | atmCoast_grid_area = atm_grid_area [atmCoast] |
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159 | atmCoast_grid_imask = atm_grid_imask [atmCoast] |
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160 | atmCoast_grid_pmask = atm_grid_pmask [atmCoast] |
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161 | atmCoast_address = atm_address [atmCoast] |
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162 | |
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163 | remap_matrix = np.empty ( shape=(0), dtype=np.float64 ) |
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164 | atm_address = np.empty ( shape=(0), dtype=np.int32 ) |
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165 | oce_address = np.empty ( shape=(0), dtype=np.int32 ) |
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166 | |
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167 | for ja in np.arange(len(atmCoast_grid_pmask)) : |
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168 | z_dist = geodist ( atmCoast_grid_center_lon[ja], atmCoast_grid_center_lat[ja], oceCoast_grid_center_lon, oceCoast_grid_center_lat) |
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169 | z_mask = np.where ( z_dist*ra < 600000.0, True, False) |
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170 | num_links = z_mask.sum() |
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171 | if num_links == 0 : continue |
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172 | z_area = oceCoast_grid_area[z_mask].sum() |
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173 | poids = 1.0 / z_area |
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174 | print ( num_links, z_mask.sum(), z_area ) |
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175 | # |
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176 | matrix_local = np.ones ((num_links),dtype=np.float64) * poids |
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177 | # address on source grid : all links points to the same LMDZ point. |
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178 | atm_address_local = np.ones(num_links, dtype=np.int32 ) * atmCoast_address[ja] |
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179 | # address on destination grid |
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180 | oce_address_local = oceCoast_address[z_mask] |
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181 | # Append to global tabs |
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182 | remap_matrix = np.append ( remap_matrix, matrix_local ) |
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183 | atm_address = np.append ( atm_address , atm_address_local ) |
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184 | oce_address = np.append ( oce_address , oce_address_local ) |
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185 | |
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186 | |
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187 | print ('fini') |
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188 | |
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189 | num_links = remap_matrix.shape[0] |
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190 | |
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191 | # Output file |
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192 | runoff = myargs.output |
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193 | f_runoff = netCDF4.Dataset ( runoff, 'w', format='NETCDF3_64BIT' ) |
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194 | |
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195 | print ('Output file: ' + runoff ) |
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196 | |
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197 | f_runoff.Conventions = "CF-1.6" |
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198 | f_runoff.source = "IPSL Earth system model" |
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199 | f_runoff.group = "ICMC IPSL Climate Modelling Center" |
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200 | f_runoff.Institution = "IPSL https.//www.ipsl.fr" |
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201 | f_runoff.Ocean = oce_Name + " https://www.nemo-ocean.eu" |
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202 | f_runoff.Atmosphere = atm_Name + " http://lmdz.lmd.jussieu.fr" |
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203 | f_runoff.associatedFiles = grids + " " + areas + " " + masks |
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204 | f_runoff.directory = os.getcwd () |
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205 | f_runoff.description = "Generated with ???" |
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206 | f_runoff.title = runoff |
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207 | f_runoff.Program = "Generated by " + sys.argv[0] + " with flags " + str(sys.argv[1:]) |
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208 | f_runoff.timeStamp = time.asctime() |
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209 | f_runoff.uuid = areaFile.uuid |
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210 | f_runoff.HOSTNAME = platform.node() |
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211 | #f_runoff.LOGNAME = os.getlogin() |
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212 | f_runoff.Python = "Python version " + platform.python_version() |
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213 | f_runoff.OS = platform.system() |
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214 | f_runoff.release = platform.release() |
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215 | f_runoff.hardware = platform.machine() |
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216 | f_runoff.Comment = "Preliminary attempt - Do not trust !" |
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217 | f_runoff.conventions = "SCRIP" |
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218 | f_runoff.source_grid = "curvilinear" |
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219 | f_runoff.dest_grid = "curvilinear" |
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220 | f_runoff.Model = "IPSL CM6" |
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221 | f_runoff.SVN_Author = "$Author: $" |
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222 | f_runoff.SVN_Date = "$Date: $" |
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223 | f_runoff.SVN_Revision = "$Revision: $" |
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224 | f_runoff.SVN_Id = "$Id: $" |
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225 | f_runoff.SVN_HeadURL = "$HeadURL: $" |
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226 | |
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227 | num_links = f_runoff.createDimension ('num_links' , num_links ) |
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228 | num_wgts = f_runoff.createDimension ('num_wgts' , 1 ) |
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229 | |
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230 | atm_grid_size = f_runoff.createDimension ('src_grid_size' , atm_grid_size ) |
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231 | atm_grid_corners = f_runoff.createDimension ('src_grid_corners', atm_grid_corner_lon.shape[0] ) |
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232 | atm_grid_rank = f_runoff.createDimension ('src_grid_rank' , 2 ) |
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233 | |
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234 | oce_grid_size = f_runoff.createDimension ('dst_grid_size' , oce_grid_size ) |
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235 | oce_grid_corners = f_runoff.createDimension ('dst_grid_corners', oce_grid_corner_lon.shape[0] ) |
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236 | oce_grid_rank = f_runoff.createDimension ('dst_grid_rank' , 2 ) |
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237 | |
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238 | v_remap_matrix = f_runoff.createVariable ( 'remap_matrix', 'f8', ('num_links', 'num_wgts') ) |
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239 | |
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240 | v_atm_address = f_runoff.createVariable ( 'src_address' , 'i4', ('num_links',) ) |
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241 | v_oce_address = f_runoff.createVariable ( 'dst_address' , 'i4', ('num_links',) ) |
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242 | |
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243 | v_remap_matrix[:] = remap_matrix |
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244 | v_atm_address [:] = atm_address |
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245 | v_oce_address [:] = oce_address |
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246 | |
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247 | v_atm_grid_dims = f_runoff.createVariable ( 'src_grid_dims' , 'i4', ('src_grid_rank',) ) |
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248 | v_atm_grid_center_lon = f_runoff.createVariable ( 'src_grid_center_lon', 'i4', ('src_grid_size',) ) |
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249 | v_atm_grid_center_lat = f_runoff.createVariable ( 'src_grid_center_lat', 'i4', ('src_grid_size',) ) |
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250 | v_atm_grid_center_lon.units='degrees_east' ; v_atm_grid_center_lon.long_name='Longitude' ; v_atm_grid_center_lon.long_name='longitude' ; v_atm_grid_center_lon.bounds="src_grid_corner_lon" |
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251 | v_atm_grid_center_lat.units='degrees_north' ; v_atm_grid_center_lat.long_name='Latitude' ; v_atm_grid_center_lat.long_name='latitude ' ; v_atm_grid_center_lat.bounds="src_grid_corner_lat" |
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252 | v_atm_grid_corner_lon = f_runoff.createVariable ( 'src_grid_corner_lon', 'f8', ('src_grid_size', 'src_grid_corners') ) |
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253 | v_atm_grid_corner_lat = f_runoff.createVariable ( 'src_grid_corner_lat', 'f8', ('src_grid_size', 'src_grid_corners') ) |
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254 | v_atm_grid_corner_lon.units="degrees_east" |
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255 | v_atm_grid_corner_lat.units="degrees_north" |
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256 | v_atm_grid_area = f_runoff.createVariable ( 'src_grid_area' , 'f8', ('src_grid_size',) ) |
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257 | v_atm_grid_area.long_name="Grid area" ; v_atm_grid_area.standard_name="cell_area" ; v_atm_grid_area.units="m2" |
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258 | v_atm_grid_imask = f_runoff.createVariable ( 'src_grid_imask' , 'f8', ('src_grid_size',) ) |
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259 | v_atm_grid_imask.long_name="Land-sea mask" ; v_atm_grid_imask.units="Land:1, Ocean:0" |
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260 | |
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261 | v_atm_grid_dims [:] = atm_grid_dims |
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262 | v_atm_grid_center_lon[:] = atm_grid_center_lon[:].ravel() |
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263 | v_atm_grid_center_lat[:] = atm_grid_center_lat[:].ravel() |
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264 | v_atm_grid_corner_lon[:] = atm_grid_corner_lon.reshape( (atm_jpi*atm_jpj, atm_grid_corners.__len__()) ) |
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265 | v_atm_grid_corner_lat[:] = atm_grid_corner_lat.reshape( (atm_jpi*atm_jpj, atm_grid_corners.__len__()) ) |
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266 | v_atm_grid_area [:] = atm_grid_area[:].ravel() |
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267 | v_atm_grid_imask [:] = atm_grid_imask[:].ravel() |
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268 | |
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269 | # -- |
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270 | |
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271 | v_oce_grid_dims = f_runoff.createVariable ( 'dst_grid_dims' , 'i4', ('dst_grid_rank',) ) |
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272 | v_oce_grid_center_lon = f_runoff.createVariable ( 'dst_grid_center_lon', 'i4', ('dst_grid_size',) ) |
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273 | v_oce_grid_center_lat = f_runoff.createVariable ( 'dst_grid_center_lat', 'i4', ('dst_grid_size',) ) |
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274 | v_oce_grid_center_lon.units='degrees_east' ; v_oce_grid_center_lon.long_name='Longitude' ; v_oce_grid_center_lon.long_name='longitude' ; v_oce_grid_center_lon.bounds="dst_grid_corner_lon" |
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275 | v_oce_grid_center_lat.units='degrees_north' ; v_oce_grid_center_lat.long_name='Latitude' ; v_oce_grid_center_lat.long_name='latitude' ; v_oce_grid_center_lat.bounds="dst_grid_corner_lat" |
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276 | v_oce_grid_corner_lon = f_runoff.createVariable ( 'oce_grid_corner_lon', 'f8', ('dst_grid_size', 'dst_grid_corners') ) |
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277 | v_oce_grid_corner_lat = f_runoff.createVariable ( 'dst_grid_corner_lat', 'f8', ('dst_grid_size', 'dst_grid_corners') ) |
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278 | v_oce_grid_corner_lon.units="degrees_east" |
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279 | v_oce_grid_corner_lat.units="degrees_north" |
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280 | v_oce_grid_area = f_runoff.createVariable ( 'dst_grid_area' , 'f8', ('dst_grid_size',) ) |
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281 | v_oce_grid_area.long_name="Grid area" ; v_oce_grid_area.standard_name="cell_area" ; v_oce_grid_area.units="m2" |
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282 | v_oce_grid_imask = f_runoff.createVariable ( 'dst_grid_imask' , 'f8', ('dst_grid_size',) ) |
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283 | v_oce_grid_imask.long_name="Land-sea mask" ; v_oce_grid_imask.units="Land:1, Ocean:0" |
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284 | |
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285 | v_oce_grid_dims [:] = oce_grid_dims |
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286 | v_oce_grid_center_lon[:] = oce_grid_center_lon[:].ravel() |
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287 | v_oce_grid_center_lat[:] = oce_grid_center_lat[:].ravel() |
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288 | v_oce_grid_corner_lon[:] = oce_grid_corner_lon.reshape( (oce_jpi*oce_jpj, oce_grid_corners.__len__()) ) |
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289 | v_oce_grid_corner_lat[:] = oce_grid_corner_lon.reshape( (oce_jpi*oce_jpj, oce_grid_corners.__len__()) ) |
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290 | v_oce_grid_area [:] = oce_grid_area[:].ravel() |
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291 | v_oce_grid_imask [:] = oce_grid_imask[:].ravel() |
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292 | |
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293 | # For diags |
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294 | v_atm_lon_addressed = f_runoff.createVariable ( 'src_lon_addressed', 'f8', ('num_links',) ) |
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295 | v_atm_lat_addressed = f_runoff.createVariable ( 'src_lat_addressed', 'f8', ('num_links',) ) |
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296 | v_oce_lon_addressed = f_runoff.createVariable ( 'dst_lon_addressed', 'f8', ('num_links',) ) |
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297 | v_oce_lat_addressed = f_runoff.createVariable ( 'dst_lat_addressed', 'f8', ('num_links',) ) |
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298 | |
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299 | v_atm_lon_addressed.long_name="Longitude" ; v_atm_lon_addressed.standard_name="longitude" ; v_atm_lon_addressed.units="degrees_east" |
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300 | v_atm_lat_addressed.long_name="Latitude" ; v_atm_lat_addressed.standard_name="latitude" ; v_atm_lat_addressed.units="degrees_east" |
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301 | v_atm_lon_addressed [:] = atm_grid_center_lon.ravel()[atm_address].ravel() |
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302 | v_atm_lat_addressed [:] = atm_grid_center_lat.ravel()[atm_address].ravel() |
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303 | |
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304 | v_oce_lon_addressed.long_name="Longitude" ; v_oce_lon_addressed.standard_name="longitude" ; v_oce_lon_addressed.units="degrees_east" |
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305 | v_oce_lat_addressed.long_name="Latitude" ; v_oce_lat_addressed.standard_name="latitude" ; v_oce_lat_addressed.units="degrees_east" |
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306 | v_oce_lon_addressed [:] = oce_grid_center_lon.ravel()[oce_address].ravel() |
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307 | v_oce_lat_addressed [:] = oce_grid_center_lat.ravel()[oce_address].ravel() |
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308 | |
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309 | f_runoff.close () |
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