1 | ;+ |
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2 | ; |
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3 | ; =================== |
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4 | ; interp_erai_msl.pro |
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5 | ; =================== |
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6 | ; |
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7 | ; .. function:: interp_erai_msl(yyyymmddb,yyyymmdde, eraitype) |
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8 | ; |
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9 | ; DESCRIPTION |
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10 | ; =========== |
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11 | ; |
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12 | ; Interpolation of msl from ERA-I grid to OAFLUX grid |
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13 | ; |
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14 | ; If eraitype is set to 1, |
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15 | ; :file:`${PROJECT_ID}/20c3m_erai_msl_TROP_1989_2009.nc` |
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16 | ; containing |
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17 | ; msl from ERA-I |
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18 | ; has been produced by |
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19 | ; :ref:`compute_erai_daily_region_2d.sh`. |
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20 | ; |
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21 | ; If eraitype is set to 2, |
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22 | ; :file:`${PROJECT_ID}/erai_msl_{yyyyb}_{yyyye}.nc` |
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23 | ; containing |
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24 | ; msl from ERA-I |
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25 | ; has been produced by |
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26 | ; :ref:`concat_eraiy.sh`. |
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27 | ; |
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28 | ; :file:`${PROJECT_ID}/mask_oaflux_30N30S.nc` |
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29 | ; containing |
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30 | ; OAFLUX grid |
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31 | ; has been produced by |
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32 | ; :func:`oaflux_mask_30n30s`. |
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33 | ; |
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34 | ; Interpolated msl |
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35 | ; is written in |
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36 | ; :file:`${PROJECT_OD}/erai_msl_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc` |
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37 | ; if this file not already exists. |
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38 | ; |
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39 | ; This output file |
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40 | ; :file:`${PROJECT_OD}/erai_msl_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc` |
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41 | ; must be processed after by |
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42 | ; :func:`d2m_to_q2m_erai`. |
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43 | ; |
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44 | ; .. only:: man |
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45 | ; |
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46 | ; Figure is visible on PDF and HTML documents only. |
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47 | ; |
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48 | ; .. only:: html or latex |
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49 | ; |
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50 | ; .. graphviz:: |
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51 | ; |
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52 | ; digraph interp_erai_msl { |
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53 | ; |
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54 | ; file_in_erai1 [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/20c3m_erai_msl_TROP_1989_2009.nc"]; |
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55 | ; file_in_erai2 [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/erai_msl_{yyyyb}_{yyyye}.nc"]; |
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56 | ; mask [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/mask_oaflux_30N30S.nc"]; |
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57 | ; file_out [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/erai_msl_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc"]; |
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58 | ; |
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59 | ; interp_erai_msl [shape=box, |
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60 | ; fontname=Courier, |
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61 | ; color=blue, |
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62 | ; URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/interp_erai_msl.pro", |
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63 | ; label="${PROJECT}/src/interp_erai_msl.pro"]; |
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64 | ; |
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65 | ; {file_in_erai1 file_in_erai2 mask} -> {interp_erai_msl} -> {file_out} |
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66 | ; |
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67 | ; } |
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68 | ; |
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69 | ; SEE ALSO |
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70 | ; ======== |
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71 | ; |
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72 | ; :ref:`interpolate_data` |
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73 | ; |
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74 | ; :ref:`project_profile.sh` |
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75 | ; |
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76 | ; Used by :ref:`tropflux.sh` |
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77 | ; |
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78 | ; :ref:`compute_erai_daily_region_2d.sh` |
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79 | ; :ref:`concat_eraiy.sh` |
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80 | ; |
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81 | ; :func:`report <saxo:report>` |
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82 | ; :func:`isadirectory <saxo:isadirectory>` |
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83 | ; :func:`isafile <saxo:isafile>` |
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84 | ; :func:`initncdf <saxo:initncdf>` |
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85 | ; :func:`read_ncdf <saxo:read_ncdf>` |
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86 | ; :func:`domdef <saxo:domdef>` |
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87 | ; :func:`call_interp2d <saxo:call_interp2d>` |
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88 | ; :func:`ncdf_quickwrite <saxo:ncdf_quickwrite>` |
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89 | ; |
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90 | ; :func:`d2m_to_q2m_erai` |
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91 | ; |
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92 | ; EXAMPLES |
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93 | ; ======== |
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94 | ; |
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95 | ; With ERA-I type 1: |
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96 | ; |
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97 | ; .. code-block:: idl |
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98 | ; |
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99 | ; .compile file_interp |
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100 | ; yyyymmddb = 20000101L |
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101 | ; yyyymmdde = 20001231L |
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102 | ; eraitype = 1 |
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103 | ; result = interp_erai_msl(yyyymmddb, yyyymmdde, eraitype) |
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104 | ; print, result |
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105 | ; |
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106 | ; With ERA-I type 2: |
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107 | ; |
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108 | ; .. code-block:: idl |
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109 | ; |
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110 | ; .compile file_interp |
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111 | ; yyyymmddb = 20000101L |
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112 | ; yyyymmdde = 20001231L |
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113 | ; eraitype = 2 |
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114 | ; result = interp_erai_msl(yyyymmddb, yyyymmdde, eraitype) |
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115 | ; print, result |
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116 | ; |
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117 | ; TODO |
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118 | ; ==== |
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119 | ; |
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120 | ; use real output of :ref:`compute_erai_daily_region_2d.sh` if eraitype is set to 1 |
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121 | ; |
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122 | ; get_erai.py + grib to netcdf conversion |
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123 | ; |
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124 | ; msl_attr={units:'milibars' .. millibar at least, hPa will be probably |
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125 | ; more SI |
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126 | ; |
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127 | ; why 19880101,20100930 as dates in read_ncdf. |
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128 | ; now (20120319) should be yyyymmddb and yyymmdde but disastrous side effect |
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129 | ; |
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130 | ; first step time 14245.5 (days since 1950-01-01 00:00:00) : correct ? |
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131 | ; |
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132 | ; KNOWN ISSUES |
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133 | ; ============ |
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134 | ; |
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135 | ; test of existence of fullfilename_msk not very efficient because |
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136 | ; MUST_EXIST keyword of :func:`isafile <saxo:isafile>` not yet implemented |
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137 | ; |
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138 | ; EVOLUTIONS |
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139 | ; ========== |
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140 | ; |
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141 | ; $Id: interp_erai_msl.pro 88 2011-08-19 15:40:14Z pinsard $ |
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142 | ; |
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143 | ; $URL$ |
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144 | ; |
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145 | ; - fplod 20120704T113504Z cratos (Linux) |
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146 | ; |
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147 | ; * add eraitype parameter |
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148 | ; * conversion mPa to hPa |
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149 | ; * deal with time units (days vs hours) and time origin |
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150 | ; |
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151 | ; - fplod 20120320 |
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152 | ; |
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153 | ; * no more timegen |
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154 | ; |
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155 | ; - fplod 20120319 |
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156 | ; |
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157 | ; * taking project_overwrite into account |
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158 | ; * pro -> function |
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159 | ; |
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160 | ; - pinsard 2011-08-23T09:09:16Z loholt1.ipsl.polytechnique.fr (Linux) |
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161 | ; |
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162 | ; * retry on loholt1 with idl8 and idl6 |
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163 | ; |
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164 | ; - fplod 20110811T113646Z aedon.locean-ipsl.upmc.fr (Darwin) |
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165 | ; |
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166 | ; * check for units in original file before conversion |
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167 | ; |
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168 | ; - fplod 20110809T145539Z aedon.locean-ipsl.upmc.fr (Darwin) |
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169 | ; |
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170 | ; * remove v1 from pro name and file |
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171 | ; * header |
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172 | ; * usage of ${PROJECT_ID} and ${PROJECT_OD} |
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173 | ; * remove return statement |
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174 | ; * add test on IO files |
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175 | ; * add OUTMASK_IND and SET_OUTMSKVAL to call_interp2d call |
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176 | ; |
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177 | ; - pbk 2008 |
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178 | ; |
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179 | ; * creation |
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180 | ; |
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181 | ;- |
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182 | function interp_erai_msl $ |
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183 | , yyyymmddb $ |
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184 | , yyyymmdde $ |
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185 | , eraitype |
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186 | ; |
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187 | ;++compile_opt idl2, strictarrsubs, logical_predicate |
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188 | ; |
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189 | @cm_4cal |
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190 | @cm_4data |
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191 | @cm_4mesh |
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192 | @cm_4data |
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193 | @cm_project |
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194 | ; |
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195 | ; Return to caller if errors |
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196 | ON_ERROR, 2 |
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197 | ; |
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198 | result = -1 |
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199 | ; |
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200 | usage = 'result = interp_erai_msl(yyyymmddb, yyyymmdde, eraitype)' |
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201 | nparam = N_PARAMS() |
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202 | IF (nparam NE 3) THEN BEGIN |
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203 | ras = report(['Incorrect number of arguments.' $ |
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204 | + '!C' $ |
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205 | + 'Usage : ' + usage]) |
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206 | return, result |
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207 | ENDIF |
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208 | ; |
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209 | ; check for input directory |
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210 | ; |
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211 | ; test if ${PROJECT_ID} defined |
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212 | CASE project_id_env OF |
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213 | '' : BEGIN |
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214 | msg = 'eee : ${PROJECT_ID} is not defined' |
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215 | ras = report(msg) |
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216 | return, result |
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217 | END |
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218 | ELSE : BEGIN |
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219 | msg = 'iii : ${PROJECT_ID} is ' + project_id_env |
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220 | ras = report(msg) |
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221 | END |
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222 | ENDCASE |
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223 | ; |
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224 | iodirin = isadirectory(project_id_env) |
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225 | ; |
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226 | ; existence and protection of ${PROJECT_ID} |
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227 | IF (FILE_TEST(iodirin, /DIRECTORY, /EXECUTABLE, /READ) EQ 0) THEN BEGIN |
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228 | msg = 'eee : the directory' + iodirin + ' is not accessible.' |
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229 | ras = report(msg) |
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230 | return, result |
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231 | ENDIF |
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232 | ; |
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233 | ; build mask filename |
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234 | filename_msk='mask_oaflux_30N30S.nc' |
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235 | ; |
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236 | ; check if this file exists |
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237 | msg='iii : looking for ' + filename_msk |
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238 | ras = report(msg) |
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239 | fullfilename_msk = isafile(iodirin + filename_msk, NEW=0, /MUST_EXIST) |
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240 | IF fullfilename_msk[0] EQ '' THEN BEGIN |
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241 | msg = 'eee : the file ' + fullfilename_msk + ' was not found.' |
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242 | ras = report(msg) |
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243 | return, result |
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244 | ENDIF |
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245 | ; |
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246 | ; build data filename |
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247 | IF eraitype EQ 1 THEN BEGIN |
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248 | erai_var = 'msl' |
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249 | filename='20c3m_erai_msl_TROP_1989_2009.nc' |
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250 | tutoday = 24.d |
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251 | tmporig = date2jul(19570101L,month=immo,day=iddo,year=iyyyyo) |
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252 | endif |
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253 | IF (eraitype eq 2) THEN BEGIN |
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254 | erai_var = 'msl' |
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255 | tmpb = date2jul(yyyymmddb,month=immb,day=iddb,year=iyyyyb) |
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256 | tmpe = date2jul(yyyymmdde,month=imme,day=idde,year=iyyyye) |
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257 | filename = 'erai_' + erai_var + '_' + string(iyyyyb,format='(I4.4)') + '_' + string(iyyyye,format='(I4.4)') + '.nc' |
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258 | tutoday = 1.d |
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259 | tmporig = date2jul(19500101L,month=immo,day=iddo,year=iyyyyo) |
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260 | ENDIF |
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261 | ; |
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262 | ; check if this file exists |
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263 | msg='iii : looking for ' + filename |
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264 | ras = report(msg) |
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265 | fullfilename = isafile(iodirin + filename, NEW=0, /MUST_EXIST) |
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266 | IF fullfilename[0] EQ '' THEN BEGIN |
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267 | msg = 'eee : the file ' + fullfilename + ' was not found.' |
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268 | ras = report(msg) |
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269 | return, result |
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270 | ENDIF ELSE BEGIN |
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271 | msg = 'iii : the file ' + fullfilename + ' found.' |
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272 | ras = report(msg) |
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273 | ENDELSE |
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274 | ; |
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275 | ; test if ${PROJECT_OD} defined |
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276 | CASE project_od_env OF |
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277 | '' : BEGIN |
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278 | msg = 'eee : ${PROJECT_OD} is not defined' |
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279 | ras = report(msg) |
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280 | return, result |
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281 | END |
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282 | ELSE : BEGIN |
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283 | msg = 'iii : ${PROJECT_OD} is ' + project_od_env |
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284 | ras = report(msg) |
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285 | END |
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286 | ENDCASE |
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287 | ; |
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288 | ; check if output data will be possible |
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289 | iodirout = isadirectory(project_od_env) |
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290 | ; |
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291 | ; existence and protection |
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292 | IF (FILE_TEST(iodirout, /DIRECTORY, /WRITE) EQ 0) THEN BEGIN |
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293 | msg = 'eee : the directory' + iodirout + ' was not found.' |
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294 | ras = report(msg) |
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295 | return, result |
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296 | ENDIF |
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297 | ; |
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298 | ; build output filename |
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299 | filename_out = 'erai_msl_' + string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '_oafluxgrid.nc' |
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300 | fullfilename_out = iodirout + filename_out |
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301 | ; in order to avoid unexpected overwritten |
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302 | IF ((FILE_TEST(fullfilename_out) EQ 1) AND (project_overwrite EQ 0)) THEN BEGIN |
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303 | msg = 'eee : the file ' + fullfilename_out + ' already exists.' |
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304 | ras = report(msg) |
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305 | return, result |
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306 | ENDIF |
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307 | ; |
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308 | initncdf, fullfilename |
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309 | domdef |
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310 | latin=reform(gphit[0,*]) |
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311 | lonin=reform(glamt[*,0]) |
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312 | print, 'lat grid ',min(latin),max(latin),latin[1]-latin[0] |
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313 | print, 'lon grid ',min(lonin),max(lonin),lonin[1]-lonin[0] |
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314 | mslin=read_ncdf(erai_var,yyyymmddb,yyyymmdde,file=fullfilename,/nostr) |
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315 | ; |
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316 | help, time |
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317 | timein=tutoday*(time-julday(immo,iddo,iyyyyo,0,0,0)) |
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318 | jptin=n_elements(timein) |
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319 | da=jul2date(time[0]) |
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320 | cda0=string(da,format='(i8.8)') |
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321 | da=jul2date(time[jpt-1]) |
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322 | cda1=string(da,format='(i8.8)') |
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323 | print, 'msl first date ', cda0 |
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324 | print, 'msl last date ' , cda1 |
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325 | ; |
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326 | tab=mslin[*,*,0] |
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327 | mskin=glamt*0.+1. |
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328 | ; |
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329 | initncdf, fullfilename_msk |
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330 | domdef |
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331 | latout=reform(gphit[0,*]) |
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332 | lonout=reform(glamt[*,0]) |
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333 | print, 'lat grid ',min(latout),max(latout),latout[1]-latout[0] |
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334 | print, 'lon grid ',min(lonout),max(lonout),lonout[1]-lonout[0] |
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335 | mskout=read_ncdf("msk", file=fullfilename_msk,/nostr) |
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336 | ; |
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337 | ; conversion to hPa |
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338 | ncdf_getatt, fullfilename, erai_var, units=units |
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339 | CASE units OF |
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340 | 'Pascal' : BEGIN |
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341 | mslin=mslin/100 |
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342 | END |
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343 | 'mPa' : BEGIN |
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344 | mslin=mslin*10 |
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345 | END |
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346 | ELSE : BEGIN |
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347 | msg = 'eee : ' + units + ' unknown' |
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348 | ras = report(msg) |
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349 | return, result |
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350 | END |
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351 | ENDCASE |
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352 | ; |
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353 | help, mslin,lonin,latin,mskin,lonout,latout,mskout |
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354 | ; |
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355 | mslout=fltarr(jpi,jpj,jptin) |
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356 | for jt=0,jptin-1 do begin |
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357 | ; ++ print, 'Interpolation jt=',jt,' / ',jptin-1 |
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358 | tab=reform(mslin[*,*,jt]) |
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359 | mslout[*,*,jt]=call_interp2d(tab,lonin,latin,mskin $ |
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360 | , lonout,latout,method='bilinear' $ |
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361 | , OUTMASK_IND=mskout, SET_OUTMSKVAL=mskout) |
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362 | mslout[*,*,jt]=mslout[*,*,jt]*mskout+(1.-mskout)*1.e20 |
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363 | endfor |
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364 | ; |
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365 | initncdf, fullfilename_msk |
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366 | ; |
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367 | lat=latout |
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368 | lon=lonout |
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369 | ncfile='!' + fullfilename_out |
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370 | lon_attr={units:'degrees_east',long_name:'Longitude'} |
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371 | lat_attr={units:'degrees_north',long_name:'Latitude'} |
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372 | time_attr={units:'days since 1950-01-01 00:00:00',long_name:'Time axis',time_origin:'1950-JAN-01 00:00:00'} |
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373 | globattr={source:'Data are from ECMWF ERA-Interim reanalysis', timerange:cda0+' - '+cda1} |
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374 | msl_attr={units:'milibars',missing_value:1e20,long_name:'Mean Sea leval pressure',short_name:'msl',axis:'TYX'} |
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375 | ; |
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376 | ncfields = 'msl[longitude,latitude,*time]=mslout:msl_attr; ' $ |
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377 | + 'longitude[]=lon:lon_attr; ' $ |
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378 | + 'latitude[]=lat:lat_attr; ' $ |
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379 | + 'time[]=timein:time_attr ' $ |
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380 | + ' @ globattr' |
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381 | ; |
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382 | @ncdf_quickwrite |
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383 | ; |
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384 | result = 0 |
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385 | return, result |
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386 | ; |
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387 | end |
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