1 | ;+ |
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2 | ; |
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3 | ; .. _interp_erai_t2m_1989_2009.pro: |
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4 | ; |
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5 | ; ================================================================================== |
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6 | ; interp_erai_t2m_1989_2009.pro - Interpolation of t2 from ERA-I grid to OAFLUX grid |
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7 | ; ================================================================================== |
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8 | ; |
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9 | ; Interpolation of t2 from ERA-I grid to OAFLUX grid |
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10 | ; |
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11 | ; :file:`${PROJECT_ID}/20c3m_erai_t2_TROP_1989_2009.nc` containing t2 from ERA-I have been produced |
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12 | ; by :ref:`compute_erai_daily_region_2d.sh`. |
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13 | ; |
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14 | ; :file:`${PROJECT_ID}/mask_oaflux_30N30S.nc` containing OAFLUX grid have been produced by :ref:`oaflux_mask_30N30S.pro`. |
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15 | ; |
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16 | ; Interpolated t2 is written in |
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17 | ; :file:`${PROJECT_OD}/erai_t2m_19890101_20091231_oafluxgrid.nc` if this file not already exists. |
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18 | ; |
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19 | ; This output file :file:`${PROJECT_OD}/erai_t2m_19890101_20091231_oafluxgrid.nc` must be processed after by :ref:`t2m_correction_ncdf.pro`. |
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20 | ; |
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21 | ; .. graphviz:: |
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22 | ; |
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23 | ; digraph interp_erai_t2m_1989_2009 { |
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24 | ; graph [ |
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25 | ; rankdir="TB", |
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26 | ; ] |
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27 | ; file_in [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/20c3m_erai_t2_TROP_1989_2009.nc"]; |
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28 | ; mask [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/mask_oaflux_30N30S.nc"]; |
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29 | ; |
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30 | ; ncfile [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/erai_t2m_19890101_20091231_oafluxgrid.nc"]; |
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31 | ; |
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32 | ; interp_erai_t2m_1989_2009 [shape=box, |
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33 | ; fontname=Courier, |
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34 | ; color=blue, |
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35 | ; URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/interp_erai_t2m_1989_2009.pro"", |
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36 | ; label="${PROJECT}/src/interp_erai_t2m_1989_2009.pro"]; |
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37 | ; |
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38 | ; {file_in mask} -> {interp_erai_t2m_1989_2009} -> {ncfile} |
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39 | ; |
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40 | ; } |
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41 | ; |
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42 | ; |
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43 | ; SEE ALSO |
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44 | ; ======== |
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45 | ; |
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46 | ; :ref:`interpolate_data` |
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47 | ; |
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48 | ; :ref:`project_profile.sh` |
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49 | ; |
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50 | ; :ref:`compute_erai_daily_region_2d.sh` |
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51 | ; |
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52 | ; :ref:`oaflux_mask_30N30S.pro` |
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53 | ; |
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54 | ; :func:`report <saxo:report>` |
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55 | ; :func:`isadirectory <saxo:isadirectory>` |
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56 | ; :func:`isafile <saxo:isafile>` |
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57 | ; :func:`initncdf <saxo:initncdf>` |
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58 | ; :func:`read_ncdf <saxo:read_ncdf>` |
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59 | ; :func:`ncdf_lec <saxo:ncdf_lec>` |
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60 | ; :func:`domdef <saxo:domdef>` |
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61 | ; :func:`call_interp2d <saxo:call_interp2d>` |
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62 | ; :func:`ncdf_quickwrite <saxo:ncdf_quickwrite>` |
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63 | ; :func:`ncdf_getatt <saxo:ncdf_getatt>` |
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64 | ; |
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65 | ; :ref:`t2m_correction_ncdf.pro` |
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66 | ; |
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67 | ; EXAMPLES |
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68 | ; ======== |
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69 | ; |
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70 | ; :: |
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71 | ; |
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72 | ; IDL> .compile file_interp |
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73 | ; IDL> interp_erai_t2m_1989_2009 |
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74 | ; |
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75 | ; |
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76 | ; TODO |
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77 | ; ==== |
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78 | ; |
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79 | ; strange view (lat and lon shift with ncview) : check grid init |
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80 | ; |
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81 | ; remove useless netcdf_read |
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82 | ; |
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83 | ; check time values |
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84 | ; |
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85 | ; why use :func:`call_interp2d <saxo:call_interp2d>` : this is an hidden function of SAXO |
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86 | ; see :func:`file_interp <saxo:file_interp>` |
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87 | ; |
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88 | ; use as input a file produced by compute_erai_daily_region_2d.sh |
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89 | ; |
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90 | ; coding rules |
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91 | ; |
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92 | ; hard coded time in module name and in output filename |
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93 | ; |
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94 | ; why two "initncdf, fullfilename_msk" |
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95 | ; |
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96 | ; hard coded attributes for t2m (missing value, short name, axis) and time (origin) : use ncdf_getatt |
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97 | ; |
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98 | ; CF conventions |
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99 | ; |
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100 | ; KNOWN ISSUES |
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101 | ; ============ |
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102 | ; |
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103 | ; test of existence of fullfilename_msk not very efficient because |
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104 | ; MUST_EXIST keyword of :func:`isafile <saxo:isafile>` not yet implemented |
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105 | ; |
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106 | ; EVOLUTIONS |
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107 | ; ========== |
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108 | ; |
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109 | ; - fplod 20110103T153734Z aedon.locean-ipsl.upmc.fr (Darwin) |
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110 | ; |
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111 | ; * computed first and last dates |
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112 | ; * start using ncdf_getatt instead of hard coded attributes |
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113 | ; |
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114 | ; - fplod 20101223T130406Z aedon.locean-ipsl.upmc.fr (Darwin) |
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115 | ; |
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116 | ; * replace /Volumes/PRAVEEN/TropFlux/input_uncor/ by ${TROPFLUX_OD} |
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117 | ; * complete documentation |
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118 | ; * get time dimension in data file |
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119 | ; * replace read_ncdf by ncdf_lec |
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120 | ; |
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121 | ; usage of timestep keyword in read_ncdf was not efficient because of memory problem : |
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122 | ; can not read the whole time range (ok with 7580, not ok with 7591 while need is 7670 |
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123 | ; :: |
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124 | ; |
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125 | ; % Unable to allocate memory: to make array. |
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126 | ; Cannot allocate memory |
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127 | ; |
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128 | ; |
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129 | ; When timestep keyword is not used we can see these messages:: |
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130 | ; |
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131 | ; /usr/work/incas/fplod/tropflux_d/20c3m_erai_t2_TROP_1989_2009.nc as no time axis variable |
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132 | ; given by Praveen |
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133 | ; |
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134 | ; Value of Julian date is out of allowed range |
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135 | ; |
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136 | ; % Array used to subscript array contains out of range subscript: DATAIN |
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137 | ; |
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138 | ; |
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139 | ; - fplod 20101222T163216Z aedon.locean-ipsl.upmc.fr (Darwin) |
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140 | ; |
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141 | ; * replace /Volumes/PRAVEEN/ERAI_global by ${TROPFLUX_ID} |
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142 | ; |
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143 | ; - fplod 20101217T140745Z aedon.locean-ipsl.upmc.fr (Darwin) |
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144 | ; |
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145 | ; * remove hard coded directory for mask_oaflux_30N30S.nc |
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146 | ; |
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147 | ; - fplod 20101215T112140Z aedon.locean-ipsl.upmc.fr (Darwin) |
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148 | ; |
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149 | ; * add graph in header |
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150 | ; |
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151 | ; - fplod 20101214T093615Z aedon.locean-ipsl.upmc.fr (Darwin) |
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152 | ; |
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153 | ; * minimal header |
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154 | ; |
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155 | ; - pbk 2008 |
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156 | ; |
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157 | ; * creation |
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158 | ; |
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159 | ;- |
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160 | pro interp_erai_t2m_1989_2009 |
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161 | ; |
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162 | @cm_4cal |
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163 | @cm_4data |
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164 | @cm_4mesh |
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165 | @cm_4data |
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166 | @cm_project |
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167 | ; |
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168 | ; check for input directory |
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169 | ; |
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170 | ; test if ${PROJECT_ID} defined |
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171 | CASE project_id_env OF |
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172 | '' : BEGIN |
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173 | msg = 'eee : ${PROJECT_ID} is not defined' |
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174 | ras = report(msg) |
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175 | STOP |
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176 | END |
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177 | ELSE: BEGIN |
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178 | msg = 'iii : ${PROJECT_ID} is ' + project_id_env |
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179 | ras = report(msg) |
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180 | END |
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181 | ENDCASE |
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182 | ; |
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183 | iodirin = isadirectory(project_id_env) |
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184 | ; |
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185 | ; existence and protection of ${PROJECT_ID} |
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186 | IF (FILE_TEST(iodirin, /DIRECTORY, /EXECUTABLE, /READ) EQ 0) THEN BEGIN |
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187 | msg = 'eee : the directory' + iodirin + ' is not accessible.' |
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188 | ras = report(msg) |
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189 | STOP |
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190 | ENDIF |
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191 | ; |
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192 | ; build mask filename |
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193 | filename_msk='mask_oaflux_30N30S.nc' |
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194 | ; |
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195 | ; check if this file exists |
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196 | fullfilename_msk = isafile(iodirin + filename_msk, NEW=0, /MUST_EXIST) |
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197 | IF fullfilename_msk[0] EQ '' THEN BEGIN |
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198 | msg = 'eee : the file ' + fullfilename_msk + ' was not found.' |
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199 | ras = report(msg) |
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200 | STOP |
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201 | ENDIF |
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202 | ; |
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203 | ; build t2 filename |
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204 | filename_t2='20c3m_erai_t2_TROP_1989_2009.nc' |
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205 | ; |
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206 | ; check if this file exists |
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207 | fullfilename_t2 = isafile(iodirin + filename_t2, NEW=0, /MUST_EXIST) |
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208 | IF fullfilename_t2[0] EQ '' THEN BEGIN |
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209 | msg = 'eee : the file ' + fullfilename_t2 + ' 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 | ; test if ${PROJECT_OD} defined |
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215 | CASE project_od_env OF |
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216 | '' : BEGIN |
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217 | msg = 'eee : ${PROJECT_OD} is not defined' |
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218 | ras = report(msg) |
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219 | STOP |
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220 | END |
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221 | ELSE: BEGIN |
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222 | msg = 'iii : ${PROJECT_OD} is ' + project_od_env |
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223 | ras = report(msg) |
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224 | END |
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225 | ENDCASE |
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226 | ; |
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227 | ; check if output data will be possible |
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228 | iodirout = isadirectory(project_od_env) |
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229 | ; |
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230 | ; existence and protection |
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231 | IF (FILE_TEST(iodirout, /DIRECTORY, /WRITE) EQ 0) THEN BEGIN |
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232 | msg = 'eee : the directory' + iodirout + ' was not found.' |
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233 | ras = report(msg) |
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234 | STOP |
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235 | ENDIF |
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236 | ; |
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237 | ; build output filename |
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238 | filename_out = 'erai_t2m_19890101_20091231_oafluxgrid.nc' |
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239 | fullfilename_out = iodirout + filename_out |
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240 | ; in order to avoid unexpected overwritten |
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241 | IF (FILE_TEST(fullfilename_out) EQ 1) THEN BEGIN |
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242 | msg = 'eee : the file ' + fullfilename_out + ' already exists.' |
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243 | ras = report(msg) |
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244 | STOP |
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245 | ENDIF |
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246 | ; |
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247 | ; define grid parameters with t2 file |
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248 | initncdf, fullfilename_t2 |
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249 | domdef |
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250 | latin=reform(gphit(0,*)) |
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251 | lonin=reform(glamt(*,0)) |
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252 | print, 'lat grid from data',min(latin),max(latin),latin(1)-latin(0) |
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253 | print, 'lon grid from data',min(lonin),max(lonin),lonin(1)-lonin(0) |
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254 | ; |
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255 | ; get time in t2 file |
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256 | timein=ncdf_lec(fullfilename_t2,var='time') |
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257 | jptin=n_elements(timein) |
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258 | print, 'time steps from data ', jptin |
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259 | print, 'The first 10 time values (variable timein) = ', timein[0:9] |
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260 | ; |
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261 | ; find first and last dates yyyymmdd |
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262 | ; they will be written in global attributes of output file |
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263 | da=jul2date(julday(01, 01, 1957,timein[0])) |
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264 | cda0=string(da,format='(i8.8)') |
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265 | da=jul2date(julday(01, 01, 1957,timein[jptin-1])) |
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266 | cda1=string(da,format='(i8.8)') |
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267 | print, 'first date ', cda0 |
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268 | print, 'last date ' , cda1 |
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269 | |
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270 | ; read t2 data |
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271 | ;++ pb memory t2min=read_ncdf("t2",0,jptin-1,/timestep,file=fullfilename_t2,/nostr) |
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272 | ; the following line is here just to prepare replacement of read_ncdf by ncdf_lec |
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273 | t2min_read_ncdf=read_ncdf("t2",0,10,/timestep,file=fullfilename_t2,/nostr) |
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274 | help, t2min_read_ncdf |
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275 | ;++print, 'The first 10 time values (variable time) = ', time[0:9] |
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276 | ;++print, 'time steps after read_ncdf (variable jpt) ', jpt |
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277 | t2min=ncdf_lec(fullfilename_t2,var='t2') |
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278 | ; |
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279 | mskin=glamt*0.+1. |
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280 | |
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281 | ; define grid parameters with mask file |
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282 | initncdf, fullfilename_msk |
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283 | domdef |
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284 | latout=reform(gphit(0,*)) |
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285 | lonout=reform(glamt(*,0)) |
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286 | print, 'lat grid from mask ',min(latout),max(latout),latout(1)-latout(0) |
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287 | print, 'lon grid from mask ',min(lonout),max(lonout),lonout(1)-lonout(0) |
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288 | mskout=read_ncdf("msk", file=fullfilename_msk,/nostr) |
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289 | ; |
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290 | help, t2min,lonin,latin,mskin,lonout,latout,mskout |
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291 | ; |
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292 | ; interpolation and mask |
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293 | t2mout=fltarr(jpi,jpj,jptin) |
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294 | for jt=0,jptin-1 do begin |
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295 | tab=reform(t2min(*,*,jt)) |
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296 | t2mout(*,*,jt)=call_interp2d(tab,lonin,latin,mskin,lonout,latout,method='bilinear') |
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297 | t2mout(*,*,jt)=t2mout(*,*,jt)*mskout+(1.-mskout)*1.e20 |
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298 | endfor |
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299 | |
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300 | initncdf, fullfilename_msk |
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301 | |
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302 | lat=latout |
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303 | lon=lonout |
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304 | ncfile='!' + fullfilename_out |
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305 | print, 'ncfile ', ncfile |
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306 | ncdf_getatt, fullfilename_msk, 'longitude', units=units |
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307 | ncdf_getatt, fullfilename_msk, 'longitude', long_name=long_name |
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308 | lon_attr={units:units, long_name:long_name} |
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309 | ncdf_getatt, fullfilename_msk, 'latitude', units=units |
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310 | ncdf_getatt, fullfilename_msk, 'latitude', long_name=long_name |
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311 | lat_attr={units:units, long_name:long_name} |
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312 | ncdf_getatt, fullfilename_t2, 'time', units=units |
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313 | ncdf_getatt, fullfilename_t2, 'time', long_name=long_name |
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314 | time_attr={units:units, long_name:long_name, time_origin:' 1957-JAN-01 00:00:00'} |
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315 | ncdf_getatt, fullfilename_t2, 't2', units=units |
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316 | ncdf_getatt, fullfilename_t2, 't2', long_name=long_name |
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317 | t2m_attr={units:units, long_name:long_name, missing_value:1e20, short_name:'t2m',axis:'TYX'} |
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318 | globattr={source:'Data are from ECMWF ERA-Interim reanalysis', timerange:cda0+' - '+cda1} |
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319 | |
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320 | |
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321 | help, t2mout |
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322 | help, timein |
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323 | ;ncfields = 't2m[longitude,latitude,*time]=t2mout:t2m_attr; ' $ |
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324 | ; + 'longitude[]=lon:lon_attr; ' $ |
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325 | ; + 'latitude[]=lat:lat_attr; ' $ |
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326 | ; + 'time[]=timein:time_attr ' $ |
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327 | ; + ' @globattr' |
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328 | |
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329 | ; ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr' |
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330 | ; ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timein:time_attr' |
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331 | ; ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[*]=timein:time_attr' |
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332 | ; ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[*]=timein:time_attr@globattr' |
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333 | ; pas ok ncfields = 't2m[longitude,latitude,*time]=t2mout:t2m_attr;longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[*]=timein:time_attr@globattr' |
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334 | ; pas ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[*]=timein:time_attr;t2m[longitude,latitude,*time]=t2mout:t2m_attr@globattr' |
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335 | |
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336 | ; the simpliest one |
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337 | nlat=73 |
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338 | nlon=96 |
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339 | latitudetp=findgen(nlat) |
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340 | longitudetp=findgen(nlon) |
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341 | timetp=findgen(2) |
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342 | pressure3d=findgen(nlon,nlat,2) |
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343 | patts = {units:'pascal',missing_value:1e10} |
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344 | globatts={source:'my program',version:2} |
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345 | NCFIELDS = 'pressure3d[longitudetp,latitudetp,*timetp]=pressure3d:patts;longitudetp[];latitudetp[];timetp[]@globatts' |
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346 | ncfile='my4.nc' |
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347 | @ncdf_quickwrite |
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348 | |
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349 | timepb=findgen(2) |
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350 | t2m=findgen(350,60,2) |
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351 | help, lat |
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352 | help, lon |
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353 | help, t2m |
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354 | help, time |
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355 | help, timein |
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356 | help, timepb |
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357 | ncfile='!' + fullfilename_out |
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358 | ; pas ok ncfields = 'longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timein:time_attr;t2m[longitude,latitude,*time]' |
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359 | ; pas ok ncfields = 't2m[longitude,latitude,*time];longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timein:time_attr' |
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360 | ; ok avec timepb=findgen(2) ncfields = 't2m[longitude,latitude,*time];longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timepb:time_attr' |
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361 | ; ok |
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362 | ;timepb=findgen(2) |
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363 | ;timepb[0]=280512. |
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364 | ;timepb[1]=280536. |
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365 | ;ncfields = 't2m[longitude,latitude,*time];longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timepb:time_attr' |
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366 | |
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367 | timepb=findgen(7670) |
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368 | ncfields = 't2m[longitude,latitude,*time];longitude[]=lon:lon_attr;latitude[]=lat:lat_attr;time[]=timepb:time_attr' |
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369 | @ncdf_quickwrite |
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370 | |
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371 | |
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372 | end |
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