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".


Page last Modified: June 14, 2005.
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