Office Note 388 GRIB1

Documentation and Software for NCEP WMO GRIB1 can be found here: GRIB1

Information on NCEP's use of WMO GRIB2 can be found here: GRIB2

• Section 0 - Indicator Section (IS)
• Section 1 - Product Definition Section (PDS)
  • Table 0 - National/International Originating Centers
  • Table A - Generating Process or Model
  • Table B - Grid Identification
  • Table C - National Sub-Centers
  • Table 1 - Flag for GDS or BMS
  • Table 2 - Parameters & Units
  • Table 3 - Type and Value of Level
  • Table 4 - Forecast Time Unit
  • Table 5 - Time Range Indicator
• Section 2 - Grid Description Section (GDS)
  • Table 6 - Data Representation Type
  • Table 7 - Resolution and Component Flags
  • Table D - Sundry Grid Definitions
  • Table 8 - Scanning Mode Flag
  • Table 9 - Spectral Representation Type
  • Table 10 - Coefficient Storage Mode
• Section 3 - Bit Map Section (BMS)
• Section 4 - Binary Data Section (BDS)
  • Table 11 - Flag
• Section 5 - End Section
• Appendix A - Outline of WMO Headers Used With GRIB
• Appendix B - Outline of WMO Headers for the EPA/CMAQ model
• Appendix C - Outline of NCEP's use of the extended PDS section for ensemble modeling