Visualization Using Grib Format of ECMWF Model Result

tkdgh1237412

[Characteristic]

• Visualization tools are needed to understand ECMWF model results, and this program is software designed to accomplish this purpose.
  

[Function]

• Convert grib data to another format
  
  • [Method 1] converting grib-> ctl using wgrib batch file
  • [Method 2] grib-> NetCDF conversion using ncl library
    
• Visualize in ctl or NetCDF format
  

[Materials]

• Data : Surface temperature in ECMWF model
• Period : June 2016
  

[size=13.3333px]

[Method]

• None
  

[How to]

• Same directory location for libraries required for GrADS visualization
  
  • xcbar.gs (Source : http:// + kodama.fubuki.info/wiki/wiki.cgi/GrADS/script?lang=jp)
  • worldmap (Source : ftp:// + cola.gmu.edu/grads/boundaries/worldmap)
    
• convert grib data to ctl
  
  • [Method 1] converting grib-> ctl using wgrib batch file
    
    
    • [Step 1] Download grib2ctl.pl source code
      wget "ftp:// + ftp.cpc.ncep.noaa.gov/wd51we/wgrib.scripts/grib2ctl.pl "
      
    • [Step 2] wgib.c source code download
      wget "ftp:// + ftp.cpc.ncep.noaa.gov/wd51we/wgrib/wgrib.c"
      
    • [Step 3] Compiling with wgrib.c
      gcc wgrib.c -o wgrib
      
    • [Step 4] Setting and Granting wgrib and GrADS Environment Variables
      open grib2ctl.pl
      $wgrib=’wgrib’
      $wgrib=’/usr/local/bin/wgrib
      $pdef_dir=’/usr/local/lib/grads
      chmod 755 grib2ctl.pl
      
      
    • [Step 5] Transform ctl according to analysis site and prediction field
      
      • Analyst Field
        grib2ctl.pl grib_file > grib_file.ctl
        gribmap -i grib_file.ctl -0
        
      • Prediction
        grib2ctl.pl -verf grib_file > grib_file.ctl
        gribmap -i grib_file.ctl
        
    • Link reference
      open grib2ctl.pl
      $wgrib=’wgrib’
      $wgrib=’/usr/local/bin/wgrib
      $pdef_dir=’/usr/local/lib/grads
      chmod 755 grib2ctl.pl
      
      
  • [Method 2] grib-> NetCDF conversion using ncl library
    ncl_convert2nc grib_file > input.nc
    
    
• Visualization_Using_Grib_Format_of_ECMEF_Model_Result.csh)
• Check the visualization result
  

[OS]

• Linux
  

[Language]

• GrADS
• ShellScript (csh)
  

[Source Code]

• Visualization Using Grib Format of ECMWF Model Result
• https:// + shlee1990.tistory.com/71
  

• Visualization Using ASCII Format Radiation Transfer Model (RTM) Result
• https:// + shlee1990.tistory.com/69
  

• Visualization using Medium Weather Model (WRF ARW)
• https:// + shlee1990.tistory.com/67
  

[Result]

• Visualize surface temperature using ECMWF model results
  

Flash

收益了，多谢