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Land Surface Decoder

IMPORTANT: If you haven't already done so, be sure to read the overview document that contains information relevant to all of the NCEP decoders!

 

The NCEP Land Surface Decoder parses reports of the following format into the NCEP Decoder Interface Format:

 

WMO FM 12-XI - SYNOP

Known Deficiencies -- Groups not currently decoded in the FM12 report:

  • in section 2
    • the sea ice and ice of land origin group ICE+ciSibiDizi
    • the ICING+plain language group (it may no longer be reported)
  • in section 3
    • the phenomena supplementary information group 9SpSpspsp, unless it contains the wind gust, highest mean wind speed data, or newly fallen snow.
    • the additional data groups in regional code form
    • the symbolic expression groups 5j1j2j3j4 (j5j6j7j8j9) when they contain the following data:
      • daily amount of either evaporation or evapotranspiration
      • temperature change data
      • radiation data
      • direction of cloud drift
      • direction and elevation of cloud
  • in section 5
    • all groups except those which contain U.S. city temperature and precipitation data

Related Documents:

Change History Log:

Version Date Summary of Changes
1.1 8/1/2000 Initial version
1.2 8/2/2000 Version 1.2 Changes
1.3 8/15/2000 Version 1.3 Changes
1.4 2/6/2001 Version 1.4 Changes
1.5 11/6/2001 Version 1.5 Changes
1.6 10/23/2002 Version 1.6 Changes
1.7 2/15/2006 Version 1.7 Changes

Page last modified: 15 March 2023.
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