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HOME > Monitoring_and_Data > Oceanic and Atmospheric Data > Reanalysis: Atmospheric Data > wgrib2 questions
 

wgrib2: limitations
    Limitations on 32-bit computer
  1. The maximum grib file is limited to 2GB unless the file is read using a pipe.
  2. The maximum grib message is limited to 2GB
  3. The maximum bit precision of a complex-packed file is 25.
    Supported Unpacking
  1. simple
  2. complex
  3. jpeg2000
  4. png
  5. ieee
  6. RLE
    Supported Packing
  1. simple
  2. complex
  3. jpeg2000
  4. ieee
    Grid Support Levels
  1. nothing
  2. diagnostic inforamtion
  3. latitude/longitude of the grid points are calculated + 2
  4. can be an input grid for -new_grid + 2
  5. can be an output grid for -new_grid + 4
  6. can be an input grid for -new_grid + 3
  7. can be an output grid for -new_grid + 6
  • lat-lon: 7 (small_grib)
  • Lambert conformal: 7 (small_grib)
  • Polar stereographic: 7 (small_grib)
  • Gaussian: 7
  • Mercator: 6 (small_grib with v1.9.4)
  • Rotated lat-lon: 3 (small_grib with v1.9.4)
  • space view perspective: 3
  • irregular lat-lon: 3
  • misc.: 2
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