1 | ;+ |
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2 | ; |
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3 | ; .. _interp_erai_msl_1989_2009.pro: |
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4 | ; |
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5 | ; ============================= |
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6 | ; interp_erai_msl_1989_2009.pro |
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7 | ; ============================= |
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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 | ; :file:`${PROJECT_ID}/20c3m_erai_msl_TROP_1989_2009.nc` |
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15 | ; containing |
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16 | ; msl from ERA-I |
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17 | ; has been produced by |
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18 | ; :ref:`compute_erai_daily_region_2d.sh`. |
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19 | ; |
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20 | ; :file:`${PROJECT_ID}/mask_oaflux_30N30S.nc` |
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21 | ; containing |
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22 | ; OAFLUX grid |
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23 | ; has been produced by |
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24 | ; :ref:`oaflux_mask_30N30S.pro`. |
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25 | ; |
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26 | ; Interpolated msl |
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27 | ; is written in |
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28 | ; :file:`${PROJECT_OD}/erai_msl_19890101_20091231_oafluxgrid.nc` |
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29 | ; if this file not already exists. |
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30 | ; |
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31 | ; This output file |
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32 | ; :file:`${PROJECT_OD}/erai_msl_19890101_20091231_oafluxgrid.nc` |
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33 | ; must be processed after by |
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34 | ; :ref:`d2m_to_q2m_erai.pro`. |
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35 | ; |
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36 | ; .. only:: man |
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37 | ; |
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38 | ; Figure is visible on PDF and HTML documents only. |
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39 | ; |
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40 | ; .. only:: html or latex |
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41 | ; |
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42 | ; .. graphviz:: |
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43 | ; |
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44 | ; digraph interp_erai_msl_1989_2009 { |
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45 | ; |
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46 | ; file_in [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/20c3m_erai_msl_TROP_1989_2009.nc"]; |
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47 | ; mask [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/mask_oaflux_30N30S.nc"]; |
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48 | ; file_out [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/erai_msl_19890101_20091231_oafluxgrid.nc"]; |
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49 | ; |
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50 | ; interp_erai_msl_1989_2009 [shape=box, |
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51 | ; fontname=Courier, |
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52 | ; color=blue, |
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53 | ; URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/interp_erai_msl_1989_2009.pro", |
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54 | ; label="${PROJECT}/src/interp_erai_msl_1989_2009.pro"]; |
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55 | ; |
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56 | ; {file_in mask} -> {interp_erai_msl_1989_2009} -> {file_out} |
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57 | ; |
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58 | ; } |
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59 | ; |
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60 | ; SEE ALSO |
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61 | ; ======== |
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62 | ; |
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63 | ; :ref:`interpolate_data` |
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64 | ; |
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65 | ; :ref:`project_profile.sh` |
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66 | ; |
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67 | ; :func:`report <saxo:report>` |
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68 | ; :func:`isadirectory <saxo:isadirectory>` |
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69 | ; :func:`isafile <saxo:isafile>` |
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70 | ; :func:`initncdf <saxo:initncdf>` |
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71 | ; :func:`read_ncdf <saxo:read_ncdf>` |
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72 | ; :func:`domdef <saxo:domdef>` |
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73 | ; :func:`call_interp2d <saxo:call_interp2d>` |
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74 | ; :func:`ncdf_quickwrite <saxo:ncdf_quickwrite>` |
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75 | ; |
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76 | ; :ref:`d2m_to_q2m_erai.pro` |
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77 | ; |
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78 | ; EXAMPLES |
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79 | ; ======== |
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80 | ; |
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81 | ; :: |
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82 | ; |
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83 | ; IDL> .compile file_interp |
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84 | ; IDL> interp_erai_msl_1989_2009 |
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85 | ; |
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86 | ; TODO |
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87 | ; ==== |
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88 | ; |
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89 | ; use real output of :ref:`compute_erai_daily_region_2d.sh`. |
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90 | ; |
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91 | ; msl_attr={units:'milibars' .. millibar at least, hPa will be probably |
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92 | ; more SI |
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93 | ; |
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94 | ; why 19880101,20100930 as dates |
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95 | ; |
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96 | ; first step time 14245.5 (days since 1950-01-01 00:00:00) : correct ? |
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97 | ; |
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98 | ; KNOWN ISSUES |
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99 | ; ============ |
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100 | ; |
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101 | ; test of existence of fullfilename_msk not very efficient because |
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102 | ; MUST_EXIST keyword of :func:`isafile <saxo:isafile>` not yet implemented |
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103 | ; |
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104 | ; EVOLUTIONS |
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105 | ; ========== |
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106 | ; |
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107 | ; $Id: interp_erai_msl_1989_2009.pro 88 2011-08-19 15:40:14Z pinsard $ |
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108 | ; |
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109 | ; $URL$ |
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110 | ; |
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111 | ; - pinsard 2011-08-23T09:09:16Z loholt1.ipsl.polytechnique.fr (Linux) |
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112 | ; |
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113 | ; * retry on loholt1 with idl8 and idl6 |
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114 | ; |
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115 | ; - fplod 20110811T113646Z aedon.locean-ipsl.upmc.fr (Darwin) |
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116 | ; |
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117 | ; * check for units in original file before conversion |
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118 | ; |
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119 | ; - fplod 20110809T145539Z aedon.locean-ipsl.upmc.fr (Darwin) |
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120 | ; |
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121 | ; * remove v1 from pro name and file |
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122 | ; * header |
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123 | ; * usage of ${PROJECT_ID} and ${PROJECT_OD} |
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124 | ; * remove return statement |
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125 | ; * add test on IO files |
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126 | ; * add OUTMASK_IND and SET_OUTMSKVAL to call_interp2d call |
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127 | ; |
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128 | ; - pbk 2008 |
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129 | ; |
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130 | ; * creation |
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131 | ; |
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132 | ;- |
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133 | pro interp_erai_msl_1989_2009 |
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134 | ; |
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135 | @cm_4cal |
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136 | @cm_4data |
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137 | @cm_4mesh |
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138 | @cm_4data |
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139 | @cm_project |
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140 | ; |
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141 | ; check for input directory |
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142 | ; |
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143 | ; test if ${PROJECT_ID} defined |
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144 | CASE project_id_env OF |
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145 | '' : BEGIN |
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146 | msg = 'eee : ${PROJECT_ID} is not defined' |
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147 | ras = report(msg) |
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148 | STOP |
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149 | END |
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150 | ELSE: BEGIN |
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151 | msg = 'iii : ${PROJECT_ID} is ' + project_id_env |
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152 | ras = report(msg) |
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153 | END |
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154 | ENDCASE |
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155 | ; |
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156 | iodirin = isadirectory(project_id_env) |
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157 | ; |
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158 | ; existence and protection of ${PROJECT_ID} |
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159 | IF (FILE_TEST(iodirin, /DIRECTORY, /EXECUTABLE, /READ) EQ 0) THEN BEGIN |
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160 | msg = 'eee : the directory' + iodirin + ' is not accessible.' |
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161 | ras = report(msg) |
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162 | STOP |
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163 | ENDIF |
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164 | ; |
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165 | ; build mask filename |
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166 | filename_msk='mask_oaflux_30N30S.nc' |
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167 | ; |
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168 | ; check if this file exists |
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169 | msg='iii : looking for ' + filename_msk |
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170 | ras = report(msg) |
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171 | fullfilename_msk = isafile(iodirin + filename_msk, NEW=0, /MUST_EXIST) |
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172 | IF fullfilename_msk[0] EQ '' THEN BEGIN |
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173 | msg = 'eee : the file ' + fullfilename_msk + ' was not found.' |
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174 | ras = report(msg) |
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175 | STOP |
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176 | ENDIF |
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177 | ; |
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178 | ; build data filename |
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179 | filename='20c3m_erai_msl_TROP_1989_2009.nc' |
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180 | ; |
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181 | ; check if this file exists |
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182 | msg='iii : looking for ' + filename |
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183 | ras = report(msg) |
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184 | fullfilename = isafile(iodirin + filename, NEW=0, /MUST_EXIST) |
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185 | IF fullfilename[0] EQ '' THEN BEGIN |
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186 | msg = 'eee : the file ' + fullfilename + ' was not found.' |
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187 | ras = report(msg) |
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188 | STOP |
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189 | ENDIF |
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190 | ; |
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191 | ; test if ${PROJECT_OD} defined |
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192 | CASE project_od_env OF |
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193 | '' : BEGIN |
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194 | msg = 'eee : ${PROJECT_OD} is not defined' |
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195 | ras = report(msg) |
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196 | STOP |
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197 | END |
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198 | ELSE: BEGIN |
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199 | msg = 'iii : ${PROJECT_OD} is ' + project_od_env |
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200 | ras = report(msg) |
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201 | END |
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202 | ENDCASE |
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203 | ; |
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204 | ; check if output data will be possible |
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205 | iodirout = isadirectory(project_od_env) |
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206 | ; |
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207 | ; existence and protection |
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208 | IF (FILE_TEST(iodirout, /DIRECTORY, /WRITE) EQ 0) THEN BEGIN |
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209 | msg = 'eee : the directory' + iodirout + ' was not found.' |
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210 | ras = report(msg) |
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211 | STOP |
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212 | ENDIF |
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213 | ; |
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214 | ; build output filename |
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215 | filename_out = 'erai_msl_19890101_20091231_oafluxgrid.nc' |
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216 | fullfilename_out = iodirout + filename_out |
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217 | ; in order to avoid unexpected overwritten |
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218 | IF (FILE_TEST(fullfilename_out) EQ 1) THEN BEGIN |
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219 | msg = 'eee : the file ' + fullfilename_out + ' already exists.' |
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220 | ras = report(msg) |
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221 | STOP |
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222 | ENDIF |
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223 | ; |
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224 | initncdf, fullfilename |
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225 | domdef |
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226 | latin=reform(gphit(0,*)) |
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227 | lonin=reform(glamt(*,0)) |
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228 | print, 'lat grid ',min(latin),max(latin),latin(1)-latin(0) |
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229 | print, 'lon grid ',min(lonin),max(lonin),lonin(1)-lonin(0) |
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230 | mslin=read_ncdf("msl",19880101,20100930,file=fullfilename,/nostr) |
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231 | ; |
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232 | timein=time |
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233 | jptin=jpt |
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234 | tab=mslin(*,*,0) |
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235 | mskin=glamt*0.+1. |
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236 | ; |
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237 | initncdf, fullfilename_msk |
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238 | domdef |
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239 | latout=reform(gphit(0,*)) |
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240 | lonout=reform(glamt(*,0)) |
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241 | print, 'lat grid ',min(latout),max(latout),latout(1)-latout(0) |
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242 | print, 'lon grid ',min(lonout),max(lonout),lonout(1)-lonout(0) |
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243 | mskout=read_ncdf("msk", file=fullfilename_msk,/nostr) |
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244 | ; |
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245 | ; conversion to hPa |
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246 | ncdf_getatt, fullfilename, 'msl', units=units |
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247 | CASE units OF |
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248 | 'Pascal': BEGIN |
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249 | mslin=mslin/100 |
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250 | END |
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251 | ELSE: BEGIN |
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252 | msg = 'eee : ' + units + ' unknown' |
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253 | ras = report(msg) |
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254 | STOP |
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255 | END |
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256 | ENDCASE |
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257 | ; |
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258 | help, mslin,lonin,latin,mskin,lonout,latout,mskout |
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259 | ; |
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260 | mslout=fltarr(jpi,jpj,jptin) |
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261 | for jt=0,jptin-1 do begin |
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262 | ; ++ print, 'Interpolation jt=',jt,' / ',jptin-1 |
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263 | tab=reform(mslin(*,*,jt)) |
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264 | mslout(*,*,jt)=call_interp2d(tab,lonin,latin,mskin $ |
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265 | , lonout,latout,method='bilinear' $ |
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266 | , OUTMASK_IND=mskout, SET_OUTMSKVAL=mskout) |
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267 | mslout(*,*,jt)=mslout(*,*,jt)*mskout+(1.-mskout)*1.e20 |
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268 | endfor |
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269 | ; |
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270 | initncdf, fullfilename_msk |
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271 | time=timegen(jptin, start=julday(1,1,1989,0), units='days') |
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272 | cda0=string(jul2date(time(0)),format='(i8.8)') |
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273 | cda1=string(jul2date(time(jpt-1)),format='(i8.8)') |
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274 | timein=time-julday(1,1,1950,00,00) |
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275 | ; |
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276 | lat=latout |
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277 | lon=lonout |
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278 | ncfile='!' + fullfilename_out |
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279 | lon_attr={units:'degrees_east',long_name:'Longitude'} |
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280 | lat_attr={units:'degrees_north',long_name:'Latitude'} |
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281 | 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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282 | globattr={source:'Data are from ECMWF ERA-Interim reanalysis', timerange:cda0+' - '+cda1} |
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283 | msl_attr={units:'milibars',missing_value:1e20,long_name:'Mean Sea leval pressure',short_name:'msl',axis:'TYX'} |
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284 | ; |
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285 | ncfields = 'msl[longitude,latitude,time]=mslout:msl_attr; ' $ |
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286 | + 'longitude[]=lon:lon_attr; ' $ |
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287 | + 'latitude[]=lat:lat_attr; ' $ |
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288 | + 'time[*time]=timein:time_attr ' $ |
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289 | + ' @ globattr' |
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290 | ; |
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291 | @ncdf_quickwrite |
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292 | ; |
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293 | end |
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