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: Degrib 1.48
Date: Thu, 01 Apr 2004 17:23:03 -0500 From: Arthur Taylor To: arthur.taylor@noaa.gov Hi everyone, You all have the unique distinction of being registered on my degrib (aka NDFD_GRIB2Decoder) mailing list (all 362 of us) (I'd like to welcome: jai, seggins2000, xiaobiao.fan, debin.su, kovtchega, franz.zichy, pcm134, caryhayes, marty.whitmore, llomargaix, lbradshaw, croyle, clarkjs, khandah, swest, greg.machala, and mrbhayanak) Please let me know (email me) if you want to unregister. The latest version of the program is on: www.nws.noaa.gov/mdl/NDFD_GRIB2Decoder/ ----------- General News. For those of you who didn't see the note that Greg Mandt sent (see http://www.nws.noaa.gov/om/notifications/tin04-18ndfd_update.txt) "The new director of NWS has asked for a review of the digital services program. As a result the NDFD gridded elements will continue their experimental status until we complete a comprehensive plan no later than June 30, 2004". "The experimental period will continue through at least June 30, 2004. Additional information on the transition of ... to official NWS products will be provided in future technical implementation notices by June 30, 2004". "If you have questions regarding this notice, please contact : Leroy Spayd (leroy.spayd@noaa.gov)" (I would also add that, when you get a chance (if you haven't already), email some comments about the NDFD to nws.ndfd@noaa.gov. Include both what you like and don't like. I believe that nws.ndfd will have a say about when the data goes "operational", but supporting documentation is always helpful.) ----------- News about this release: I have just finished putting together version "1.48" (last one that I announced was "1.47" on 3/17/2004). This release is mainly focused on several bug fixes. 1) chism reported that the temperatures in the 1 degree lat/lon grid didn't range much. This was because I didn't set up a lat/lon grid projection which started in the upper left corner correctly. Turns out that I was correct in handling lat/lon grids which start in the lower left, but if they started in the upper left I ended up flipping the grid. This meant I was reporting for California, values that were in the south pacific. Ocean temperatures have a smaller variation range than land values, hence the observed behavior. 2) Found out that grib1tab.c was not consistent. I had not finished typing in the table, and so the european GRIB1 messages were not recognized correctly. 3) Started teaching it how to convert some of the GRIB1 variables from K to F. Concerned about the -Unit option, which is by default set to "-Unit e". Probably should be changed to default to "-Unit none" (default to the GRIB unit). Not sure the best way to do this... May want to make the -Unit option a required option. 4) Fixed the default name style from "%E_%v.txt" to "%e_%v.txt" 5) Minor fixes to the GRIB1 surface handling methods, and replaced the ":" in the 2 level surfaces to "-", so that it is easier to make filenames out of the surface. Also added 2 level values to the GRIB2 surface naming methods. 6) A minor cosmetic fix to the "GIS tab", so that it includes the full filename in the path (instead of just the directory) ----------- Please let me know if you have problems. Regards, Arthur
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