Degrib: FAQ

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	Degrib (NDFD GRIB2 Decoder)

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Degrib: Frequently Asked Questions (FAQ)

Answered on http://weather.gov/mdl/degrib/index.php:
Q. What is GRIB2?
Q. Why create a GRIB2 decoder program?

Answered on tutorial.php:
Q. How do I get data?
Q. What if I can't find a sector that I like?
Q. What can I do with the data?

Answered on dataloc.php:
Q. Where can I get the NDGD (National Digital Guidance Database)?
Q. Where can I get the NDFD (National Digital Forecast Database)?
Q. What are NDFD sectors?

Q. What are the possible values for "center" and "subcenter"?
A. The center refers to who generated it, and is a look up value in http://www.wmo.ch/web/www/WMOCodes/Operational/CommonTables/BUFRCommon-2005feb.pdf, while the subcenter is allocated by the originating Center. In GRIB2 they can have a value between 0 and 65535, where 65535 indicates missing. See here for the current Center/Subcenter usage.

Q. Why does "tar" keeps producing a "checksum error"?
A. On the Sun platform, the "tar" executable (located under /usr/bin) is not 100% compatible with "GNU tar". Sun users are recommended to look for "/usr/local/bin/gtar".


US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Meteorological Development Laboratory 1325 East West Highway Silver Spring, MD 20910 Page last Modified: June 14, 2005.	Degrib Questions? Arthur Taylor NDFD Questions? nws.ndfd@noaa.gov XML Questions? Paul Hershberg & John Schattel Disclaimer Information Quality Credits Glossary	Privacy Policy Freedom of Information Act (FOIA) About Us Career Opportunities