NOAA / NWS's Meteorological Development Laboratory
Degrib (NDFD GRIB2 Decoder) 
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NOAA / NWS's Meteorological Development Laboratory
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Degrib (NDFD GRIB2 Decoder) |
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Subject: degrib1.98
From: Arthur.Taylor@noaa.gov Date: Mon, 4 Jun 2012 04:00:00 -0400 (EDT) To: ---- DRAFT ---- Hi everyone, You are amongst the degrib users registered on the degrib update mailing list. We are moving to using gov.delivery and an RSS feed to disseminate notes. Expect a similar email from gov.delivery to test out the new system and allow you to opt out. The lastest version of degrib is 1.98 and can be downloaded from (http://www.weather.gov/mdl/degrib). The focus of release 1.98 is: A) To introduce the -StormTotal option. This was added to the list of Command Level options (-I, -C, ...) and responds to the need for storm total precipitation. Its purpose is to create a new grid based on adding the values from several different messages together. It is currently intended to work with QPF, SnowAmt, and IceAccum grids. Messages are selected by providing a -startTime and an -endTime. These times are exclusive, so -startTime '2012-05-25T01:00:00' will not include the message valid at 06Z for the time frame between 00Z to 06Z on the 5th whereas '2012-05-25T00:00:00' will. Extra care is required with -startTime since the Inventory (-I) option provides the end of the time period, so you need to be aware of the time duration of the data. If the Inventory says the date of the message is 06Z and the duration of the data is 6 hours, you'd need 00Z or earlier in the -startTime to include that message. The user may include an optional CONVERT OPTION (-Grib2, etc.). So: degrib foo.bin -StormTotal -startTime "05/27/2012 00:00:00" -endTime "5/28/2012 18:00:00" -Grib2 will create a new GRIB file with a single message which totalled the values from 0Z on 5/27 to 18Z on 5/28. B) To update 'dwmllib' to include support for MinRH and MaxRH. Paul (paul.hershberg@noaa.gov) would appreciate any feedback you may have about dwmllib. Please let me know if you have problems. Regards, Arthur
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