1 | ;+ |
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2 | ; |
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3 | ; =================== |
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4 | ; interp_erai_t2m.pro |
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5 | ; =================== |
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6 | ; |
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7 | ; .. function:: interp_erai_t2m(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 t2 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:`${PROJECT_ID}/20c3m_erai_t2_TROP_1989_2009.nc` |
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16 | ; containing |
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17 | ; t2 from ERA-I |
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18 | ; has been produced by |
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19 | ; :ref:`compute_erai_daily_region_2d.sh`. |
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20 | ; |
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21 | ; If eraitype is set to 2, |
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22 | ; :file:`${PROJECT_ID}/erai_t2m_{yyyyb}_{yyyye}.nc` |
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23 | ; containing |
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24 | ; t2m 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:`${PROJECT_ID}/mask_oaflux_30N30S.nc` |
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29 | ; containing OAFLUX grid |
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30 | ; has been produced by |
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31 | ; :func:`oaflux_mask_30n30s`. |
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32 | ; |
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33 | ; Interpolated t2 |
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34 | ; is written in |
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35 | ; :file:`${PROJECT_OD}/erai_t2m_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc` |
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36 | ; if this file not already exists. |
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37 | ; |
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38 | ; This output file |
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39 | ; :file:`${PROJECT_OD}/erai_t2m_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc` |
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40 | ; must be processed after by |
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41 | ; :func:`t2m_correction_ncdf`. |
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42 | ; |
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43 | ; .. only:: man |
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44 | ; |
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45 | ; Figure is visible on PDF and HTML documents only. |
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46 | ; |
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47 | ; .. only:: html or latex |
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48 | ; |
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49 | ; .. graphviz:: |
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50 | ; |
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51 | ; digraph interp_erai_t2m { |
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52 | ; |
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53 | ; file_in_erai1 [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/20c3m_erai_t2_TROP_1989_2009.nc"]; |
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54 | ; file_in_erai2 [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/erai_t2m_{yyyyb}_{yyyye}.nc"]; |
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55 | ; mask [shape=ellipse,fontname=Courier,label="${PROJECT_ID}/mask_oaflux_30N30S.nc"]; |
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56 | ; file_out [shape=ellipse,fontname=Courier,label="${PROJECT_OD}/erai_t2m_{yyyymmdd}_{yyyymmdd}_oafluxgrid.nc"]; |
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57 | ; |
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58 | ; interp_erai_t2m [shape=box, |
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59 | ; fontname=Courier, |
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60 | ; color=blue, |
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61 | ; URL="http://forge.ipsl.jussieu.fr/tropflux/browser/trunk/src/interp_erai_t2m.pro", |
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62 | ; label="${PROJECT}/src/interp_erai_t2m.pro"]; |
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63 | ; |
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64 | ; {file_in_erai1 file_in_erai2 mask} -> {interp_erai_t2m} -> {file_out} |
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65 | ; |
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66 | ; } |
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67 | ; |
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68 | ; SEE ALSO |
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69 | ; ======== |
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70 | ; |
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71 | ; :ref:`interpolate_data` |
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72 | ; |
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73 | ; Used by :ref:`tropflux.sh` |
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74 | ; |
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75 | ; :ref:`project_profile.sh` |
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76 | ; |
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77 | ; :ref:`compute_erai_daily_region_2d.sh` |
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78 | ; :ref:`concat_eraiy.sh` |
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79 | ; |
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80 | ; :func:`oaflux_mask_30n30s` |
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81 | ; |
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82 | ; :func:`report <saxo:report>` |
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83 | ; :func:`isadirectory <saxo:isadirectory>` |
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84 | ; :func:`isafile <saxo:isafile>` |
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85 | ; :func:`initncdf <saxo:initncdf>` |
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86 | ; :func:`read_ncdf <saxo:read_ncdf>` |
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87 | ; :func:`ncdf_lec <saxo:ncdf_lec>` |
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88 | ; :func:`domdef <saxo:domdef>` |
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89 | ; :func:`call_interp2d <saxo:call_interp2d>` |
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90 | ; :func:`ncdf_quickwrite <saxo:ncdf_quickwrite>` |
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91 | ; :func:`ncdf_getatt <saxo:ncdf_getatt>` |
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92 | ; |
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93 | ; :func:`t2m_correction_ncdf` |
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94 | ; |
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95 | ; EXAMPLES |
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96 | ; ======== |
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97 | ; |
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98 | ; With ERA-I type 1: |
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99 | ; |
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100 | ; .. code-block:: idl |
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101 | ; |
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102 | ; .compile file_interp |
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103 | ; yyyymmddb = 20000101L |
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104 | ; yyyymmdde = 20001231L |
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105 | ; eraitype = 1 |
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106 | ; result = interp_erai_t2m(yyyymmddb, yyyymmdde, eraitype) |
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107 | ; print, result |
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108 | ; |
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109 | ; With ERA-I type 2: |
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110 | ; |
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111 | ; .. code-block:: idl |
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112 | ; |
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113 | ; .compile file_interp |
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114 | ; yyyymmddb = 20000101L |
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115 | ; yyyymmdde = 20001231L |
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116 | ; eraitype = 2 |
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117 | ; result = interp_erai_t2m(yyyymmddb, yyyymmdde, eraitype) |
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118 | ; print, result |
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119 | ; |
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120 | ; TODO |
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121 | ; ==== |
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122 | ; |
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123 | ; scientific validation (strange look of data with ncview now) |
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124 | ; |
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125 | ; check [yyyymmddb,yyyymmdde] validity |
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126 | ; |
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127 | ; check if [yyyymmddb,yyyymmdde] is included in ERA-I file |
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128 | ; |
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129 | ; what happen if yyyymmdde > 20091231 : need to read an other ERA-I file |
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130 | ; |
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131 | ; make it work : pb on loholt1 idl8 |
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132 | ; |
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133 | ; reach end but bad time and t2m values : |
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134 | ; |
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135 | ; .. code-block:: bash |
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136 | ; |
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137 | ; ncks -v t2m -d time,0,1 -d latitude,0,1 -d longitude,0,1 /homedata/pinsard/tropflux_d/erai_t2m_19890101_20091231_oafluxgrid.nc |
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138 | ; latitude[0]=-29.5 degrees_north |
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139 | ; latitude[1]=-28.5 degrees_north |
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140 | ; |
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141 | ; longitude[0]=30.5 degrees_east |
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142 | ; longitude[1]=31.5 degrees_east |
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143 | ; |
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144 | ; time[0]=9.96920996839e+36 latitude[0]=-29.5 longitude[0]=30.5 t2m[0]=9.96921e+36 degK |
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145 | ; time[0]=9.96920996839e+36 latitude[0]=-29.5 longitude[1]=31.5 t2m[1]=9.96921e+36 degK |
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146 | ; time[0]=9.96920996839e+36 latitude[1]=-28.5 longitude[0]=30.5 t2m[350]=9.96921e+36 degK |
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147 | ; time[0]=9.96920996839e+36 latitude[1]=-28.5 longitude[1]=31.5 t2m[351]=9.96921e+36 degK |
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148 | ; time[1]=9.96920996839e+36 latitude[0]=-29.5 longitude[0]=30.5 t2m[21000]=9.96921e+36 degK |
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149 | ; time[1]=9.96920996839e+36 latitude[0]=-29.5 longitude[1]=31.5 t2m[21001]=9.96921e+36 degK |
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150 | ; time[1]=9.96920996839e+36 latitude[1]=-28.5 longitude[0]=30.5 t2m[21350]=9.96921e+36 degK |
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151 | ; time[1]=9.96920996839e+36 latitude[1]=-28.5 longitude[1]=31.5 t2m[21351]=9.96921e+36 degK |
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152 | ; |
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153 | ; time[0]=9.96920996839e+36 hours since 1957-01-01 00:00:0.0 |
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154 | ; time[1]=9.96920996839e+36 hours since 1957-01-01 00:00:0.0 |
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155 | ; |
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156 | ; loholt1 idl6 : end without error but looking with ncview all brown ! |
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157 | ; |
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158 | ; strange view (lat and lon shift with ncview) : check grid init |
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159 | ; |
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160 | ; remove useless netcdf_read or choose between read_ncdf and ncdf_lec |
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161 | ; |
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162 | ; check time values |
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163 | ; |
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164 | ; why use :func:`call_interp2d <saxo:call_interp2d>` : this is an hidden function of SAXO |
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165 | ; see :func:`file_interp <saxo:file_interp>` |
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166 | ; |
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167 | ; use as input a file produced by compute_erai_daily_region_2d.sh or |
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168 | ; get_erai.py + grib to netcdf conversion |
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169 | ; |
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170 | ; coding rules |
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171 | ; |
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172 | ; hard coded time in module name and in output filename |
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173 | ; |
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174 | ; why two "initncdf, fullfilename_msk" |
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175 | ; |
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176 | ; hard coded attributes for t2m (missing value, short name, axis) and time (origin) : use ncdf_getatt |
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177 | ; |
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178 | ; CF conventions |
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179 | ; |
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180 | ; check OUTMASK_IND and SET_OUTMSKVAL added to call_interp2d call |
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181 | ; |
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182 | ; KNOWN ISSUES |
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183 | ; ============ |
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184 | ; |
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185 | ; test of existence of fullfilename_msk not very efficient because |
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186 | ; MUST_EXIST keyword of :func:`isafile <saxo:isafile>` not yet implemented |
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187 | ; |
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188 | ; EVOLUTIONS |
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189 | ; ========== |
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190 | ; |
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191 | ; $Id$ |
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192 | ; |
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193 | ; $URL: svn+ssh://pinsard@forge.ipsl.jussieu.fr/ipsl/forge/projets/tropflux/svn/trunk/src/interp_erai_t2m.pro $ |
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194 | ; |
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195 | ; - fplod 20120704T113504Z cratos (Linux) |
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196 | ; |
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197 | ; * add eraitype parameter |
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198 | ; * deal with time units (days vs hours) and time origin |
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199 | ; |
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200 | ; - fplod 20120319 |
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201 | ; |
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202 | ; * taking project_overwrite into account |
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203 | ; |
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204 | ; - fplod 20120306 |
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205 | ; |
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206 | ; * try to add compile_opt seems to be incompatible with ncdf_quickwrite |
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207 | ; * pro -> function |
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208 | ; |
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209 | ; - pinsard 2011-08-23T09:09:16Z loholt1.ipsl.polytechnique.fr (Linux) |
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210 | ; |
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211 | ; * retry on loholt1 with idl8 and idl6 |
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212 | ; |
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213 | ; - pinsard 2011-08-08T16:11:48Z loholt1.ipsl.polytechnique.fr (Linux) |
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214 | ; |
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215 | ; * remove ncdf_quickwrite exercices |
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216 | ; |
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217 | ; - fplod 20110808T094156Z cratos (Linux) |
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218 | ; |
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219 | ; * add OUTMASK_IND and SET_OUTMSKVAL to call_interp2d call |
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220 | ; |
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221 | ; - fplod 20110103T153734Z aedon.locean-ipsl.upmc.fr (Darwin) |
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222 | ; |
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223 | ; * computed first and last dates |
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224 | ; * start using ncdf_getatt instead of hard coded attributes |
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225 | ; |
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226 | ; - fplod 20101223T130406Z aedon.locean-ipsl.upmc.fr (Darwin) |
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227 | ; |
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228 | ; * replace /Volumes/PRAVEEN/TropFlux/input_uncor/ by ${TROPFLUX_OD} |
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229 | ; * complete documentation |
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230 | ; * get time dimension in data file |
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231 | ; * replace read_ncdf by ncdf_lec |
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232 | ; |
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233 | ; usage of timestep keyword in read_ncdf was not efficient because of memory problem : |
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234 | ; can not read the whole time range (ok with 7580, not ok with 7591 while need is 7670 |
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235 | ; |
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236 | ; .. parsed-literal:: |
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237 | ; |
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238 | ; % Unable to allocate memory: to make array. |
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239 | ; Cannot allocate memory |
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240 | ; |
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241 | ; When timestep keyword is not used we can see these messages: |
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242 | ; |
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243 | ; .. parsed-literal:: |
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244 | ; |
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245 | ; /usr/work/incas/fplod/tropflux_d/20c3m_erai_t2_TROP_1989_2009.nc has no time axis variable |
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246 | ; |
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247 | ; given by Praveen |
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248 | ; |
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249 | ; .. parsed-literal:: |
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250 | |
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251 | ; Value of Julian date is out of allowed range |
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252 | ; |
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253 | ; % Array used to subscript array contains out of range subscript: DATAIN |
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254 | ; |
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255 | ; - fplod 20101222T163216Z aedon.locean-ipsl.upmc.fr (Darwin) |
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256 | ; |
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257 | ; * replace /Volumes/PRAVEEN/ERAI_global by ${TROPFLUX_ID} |
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258 | ; |
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259 | ; - fplod 20101217T140745Z aedon.locean-ipsl.upmc.fr (Darwin) |
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260 | ; |
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261 | ; * remove hard coded directory for mask_oaflux_30N30S.nc |
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262 | ; |
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263 | ; - fplod 20101215T112140Z aedon.locean-ipsl.upmc.fr (Darwin) |
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264 | ; |
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265 | ; * add graph in header |
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266 | ; |
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267 | ; - fplod 20101214T093615Z aedon.locean-ipsl.upmc.fr (Darwin) |
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268 | ; |
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269 | ; * minimal header |
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270 | ; |
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271 | ; - pbk 2008 |
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272 | ; |
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273 | ; * creation |
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274 | ; |
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275 | ;- |
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276 | function interp_erai_t2m $ |
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277 | , yyyymmddb $ |
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278 | , yyyymmdde $ |
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279 | , eraitype |
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280 | ; |
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281 | ;++compile_opt idl2, strictarrsubs, logical_predicate |
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282 | ; |
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283 | @cm_4cal |
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284 | @cm_4data |
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285 | @cm_4mesh |
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286 | @cm_4data |
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287 | @cm_project |
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288 | ; |
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289 | ; Return to caller if errors |
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290 | ON_ERROR, 2 |
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291 | ; |
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292 | result = -1 |
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293 | ; |
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294 | usage = 'result = interp_erai_t2m(yyyymmddb, yyyymmdde, eraitype)' |
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295 | nparam = N_PARAMS() |
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296 | IF (nparam NE 3) THEN BEGIN |
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297 | ras = report(['Incorrect number of arguments.' $ |
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298 | + '!C' $ |
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299 | + 'Usage : ' + usage]) |
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300 | return, result |
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301 | ENDIF |
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302 | |
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303 | ; check for input directory |
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304 | ; |
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305 | ; test if ${PROJECT_ID} defined |
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306 | CASE project_id_env OF |
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307 | '' : BEGIN |
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308 | msg = 'eee : ${PROJECT_ID} is not defined' |
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309 | ras = report(msg) |
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310 | return, result |
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311 | END |
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312 | ELSE : BEGIN |
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313 | msg = 'iii : ${PROJECT_ID} is ' + project_id_env |
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314 | ras = report(msg) |
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315 | END |
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316 | ENDCASE |
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317 | ; |
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318 | iodirin = isadirectory(project_id_env) |
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319 | ; |
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320 | ; existence and protection of ${PROJECT_ID} |
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321 | IF (FILE_TEST(iodirin, /DIRECTORY, /EXECUTABLE, /READ) EQ 0) THEN BEGIN |
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322 | msg = 'eee : the directory' + iodirin + ' is not accessible.' |
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323 | ras = report(msg) |
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324 | return, result |
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325 | ENDIF |
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326 | ; |
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327 | ; build mask filename |
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328 | filename_msk='mask_oaflux_30N30S.nc' |
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329 | ; |
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330 | ; check if this file exists |
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331 | msg='iii : looking for ' + filename_msk |
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332 | ras = report(msg) |
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333 | fullfilename_msk = isafile(iodirin + filename_msk, NEW=0, /MUST_EXIST) |
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334 | IF fullfilename_msk[0] EQ '' THEN BEGIN |
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335 | msg = 'eee : the file ' + fullfilename_msk + ' was not found.' |
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336 | ras = report(msg) |
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337 | return, result |
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338 | ENDIF |
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339 | ; |
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340 | ; build t2 filename |
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341 | IF eraitype EQ 1 THEN BEGIN |
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342 | erai_var = 't2' |
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343 | filename_t2 = '20c3m_erai_t2_TROP_1989_2009.nc' |
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344 | tutoday = 24.d |
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345 | tmporig = date2jul(19570101L,month=immo,day=iddo,year=iyyyyo) |
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346 | endif |
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347 | IF (eraitype eq 2) THEN BEGIN |
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348 | erai_var = 't2m' |
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349 | tmpb = date2jul(yyyymmddb,month=immb,day=iddb,year=iyyyyb) |
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350 | tmpe = date2jul(yyyymmdde,month=imme,day=idde,year=iyyyye) |
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351 | filename_t2 = 'erai_' + erai_var + '_' + string(iyyyyb,format='(I4.4)') + '_' + string(iyyyye,format='(I4.4)') + '.nc' |
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352 | tutoday = 1.d |
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353 | tmporig = date2jul(19500101L,month=immo,day=iddo,year=iyyyyo) |
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354 | ENDIF |
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355 | ; |
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356 | ; check if this file exists |
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357 | msg='iii : looking for ' + filename_t2 |
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358 | ras = report(msg) |
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359 | fullfilename_t2 = isafile(iodirin + filename_t2, NEW=0, /MUST_EXIST) |
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360 | IF fullfilename_t2[0] EQ '' THEN BEGIN |
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361 | msg = 'eee : the file ' + fullfilename_t2 + ' was not found.' |
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362 | ras = report(msg) |
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363 | return, result |
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364 | ENDIF |
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365 | ; |
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366 | ; test if ${PROJECT_OD} defined |
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367 | CASE project_od_env OF |
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368 | '' : BEGIN |
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369 | msg = 'eee : ${PROJECT_OD} is not defined' |
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370 | ras = report(msg) |
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371 | return, result |
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372 | END |
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373 | ELSE : BEGIN |
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374 | msg = 'iii : ${PROJECT_OD} is ' + project_od_env |
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375 | ras = report(msg) |
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376 | END |
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377 | ENDCASE |
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378 | ; |
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379 | ; check if output data will be possible |
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380 | iodirout = isadirectory(project_od_env) |
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381 | ; |
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382 | ; existence and protection |
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383 | IF (FILE_TEST(iodirout, /DIRECTORY, /WRITE) EQ 0) THEN BEGIN |
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384 | msg = 'eee : the directory' + iodirout + ' was not found.' |
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385 | ras = report(msg) |
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386 | return, result |
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387 | ENDIF |
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388 | ; |
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389 | ; build output filename |
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390 | filename_out = 'erai_t2m_' + string(yyyymmddb,format='(I8.8)') + '_' + string(yyyymmdde,format='(I8.8)') + '_oafluxgrid.nc' |
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391 | fullfilename_out = iodirout + filename_out |
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392 | ; in order to avoid unexpected overwritten |
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393 | IF ((FILE_TEST(fullfilename_out) EQ 1) AND (project_overwrite EQ 0)) THEN BEGIN |
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394 | msg = 'eee : the file ' + fullfilename_out + ' already exists.' |
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395 | ras = report(msg) |
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396 | return, result |
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397 | ENDIF |
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398 | ; |
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399 | ; define grid parameters with t2 file |
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400 | initncdf, fullfilename_t2 |
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401 | domdef |
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402 | latin=reform(gphit[0,*]) |
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403 | lonin=reform(glamt[*,0]) |
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404 | print, 'lat grid from data',min(latin),max(latin),latin[1]-latin[0] |
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405 | print, 'lon grid from data',min(lonin),max(lonin),lonin[1]-lonin[0] |
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406 | ; |
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407 | ;; get time in t2 file |
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408 | ;timein=ncdf_lec(fullfilename_t2,var='time') |
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409 | ;jptin=n_elements(timein) |
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410 | ;print, 'time steps from data ', jptin |
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411 | ;print, 'The first 10 time values (variable timein) = ', timein[0:9] |
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412 | ; |
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413 | ; find first and last dates yyyymmdd |
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414 | ;; they will be written in global attributes of output file |
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415 | ;da=jul2date(julday(01, 01, 1957,timein[0])) |
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416 | ;cda0=string(da,format='(i8.8)') |
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417 | ;da=jul2date(julday(01, 01, 1957,timein[jptin-1])) |
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418 | ;cda1=string(da,format='(i8.8)') |
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419 | ;print, 'first date ', cda0 |
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420 | ;print, 'last date ' , cda1 |
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421 | ; |
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422 | ; read t2 data |
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423 | ;++ pb memory t2min=read_ncdf("t2",0,jptin-1,/timestep,file=fullfilename_t2,/nostr) |
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424 | ; the following line is here just to prepare replacement of read_ncdf by ncdf_lec |
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425 | ;t2min_read_ncdf=read_ncdf("t2",0,10,/timestep,file=fullfilename_t2,/nostr) |
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426 | ;help, t2min_read_ncdf |
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427 | ;++print, 'The first 10 time values (variable time) = ', time[0:9] |
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428 | ;++print, 'time steps after read_ncdf (variable jpt) ', jpt |
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429 | ;t2min=ncdf_lec(fullfilename_t2,var=erai_var) |
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430 | |
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431 | t2min=read_ncdf(erai_var,yyyymmddb-.5d,yyyymmdde,file=fullfilename_t2,/nost) |
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432 | ;; time:units = "hours since 1957-01-01 00:00:0.0" ; |
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433 | timein=tutoday*(time-julday(immo,iddo,iyyyyo,0,0,0)) |
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434 | jptin=n_elements(timein) |
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435 | da=jul2date(time[0]) |
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436 | cda0=string(da,format='(i8.8)') |
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437 | da=jul2date(time[jpt-1]) |
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438 | cda1=string(da,format='(i8.8)') |
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439 | print, 't2m first date ', cda0 |
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440 | print, 't2m last date ' , cda1 |
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441 | help, t2min |
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442 | ; |
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443 | mskin=glamt*0.+1. |
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444 | ; |
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445 | ; define grid parameters with mask file |
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446 | initncdf, fullfilename_msk |
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447 | domdef |
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448 | latout=reform(gphit[0,*]) |
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449 | lonout=reform(glamt[*,0]) |
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450 | print, 'lat grid from mask ',min(latout),max(latout),latout[1]-latout[0] |
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451 | print, 'lon grid from mask ',min(lonout),max(lonout),lonout[1]-lonout[0] |
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452 | mskout=read_ncdf("msk", file=fullfilename_msk,/nostr) |
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453 | ; |
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454 | help, t2min,lonin,latin,mskin,lonout,latout,mskout |
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455 | ; |
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456 | ; interpolation and mask |
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457 | t2mout=fltarr(jpi,jpj,jptin) |
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458 | for jt=0,jptin-1 do begin |
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459 | tab=reform(t2min[*,*,jt]) |
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460 | t2mout[*,*,jt]=call_interp2d(tab,lonin,latin,mskin $ |
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461 | , lonout,latout,method="bilinear" $ |
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462 | , OUTMASK_IND=mskout, SET_OUTMSKVAL=mskout) |
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463 | t2mout[*,*,jt]=t2mout[*,*,jt]*mskout+(1.-mskout)*1.e20 |
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464 | endfor |
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465 | ; |
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466 | initncdf, fullfilename_msk |
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467 | ; |
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468 | lat=latout |
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469 | lon=lonout |
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470 | ncfile='!' + fullfilename_out |
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471 | ncdf_getatt, fullfilename_msk, 'longitude', units=units |
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472 | ncdf_getatt, fullfilename_msk, 'longitude', long_name=long_name |
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473 | lon_attr={units:units, long_name:long_name} |
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474 | ncdf_getatt, fullfilename_msk, 'latitude', units=units |
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475 | ncdf_getatt, fullfilename_msk, 'latitude', long_name=long_name |
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476 | lat_attr={units:units, long_name:long_name} |
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477 | ncdf_getatt, fullfilename_t2, 'time', units=units |
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478 | ncdf_getatt, fullfilename_t2, 'time', long_name=long_name |
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479 | time_attr={units:units, long_name:long_name, time_origin:' 1957-JAN-01 00:00:00'} |
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480 | globattr={source:'Data are from ECMWF ERA-Interim reanalysis', timerange:cda0+' - '+cda1} |
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481 | ncdf_getatt, fullfilename_t2, erai_var, units=units |
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482 | ncdf_getatt, fullfilename_t2, erai_var, long_name=long_name |
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483 | t2m_attr={units:units, long_name:long_name, missing_value:1e20, short_name:'t2m',axis:'TYX'} |
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484 | ; |
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485 | help, t2mout |
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486 | help, timein |
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487 | ncfields = 't2m[longitude,latitude,*time]=t2mout:t2m_attr; ' $ |
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488 | + 'longitude[]=lon:lon_attr; ' $ |
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489 | + 'latitude[]=lat:lat_attr; ' $ |
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490 | + 'time[]=timein:time_attr ' $ |
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491 | + ' @globattr' |
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492 | @ncdf_quickwrite |
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493 | ; |
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494 | result = 0 |
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495 | return, result |
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496 | ; |
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497 | end |
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