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> From: Scott Wigginton <address@hidden> > Organization: Texas A&M University > Keywords: 199904221806.MAA20436 COMET case GRIB Gempak translation Hi Scott, Scott Wigginton writes: > Good morning, > > Are you folks still having network and server troubles? I just wanted > to get an update. I am in need of certain datasets. Also, I am working > on CASE10 in your achives. For the model data it says that I can get > GRIB or GEMPAK format. Whenever I select Gempak, It sends me GRIB files. > How do I obtain the Gempak files which it says are available? I do not > know how to convert GRIB files to Gempak, and my class will be in need > of Gempka formatted files. Thanks (I need ETA, MRF, AVN, and NGM) How are you determining that the files you are receiving are GRIB files? I just looked at the files for you in the JOSS ftp site and all the translated ones I checked were GEMPAK files. One way to check is to use the octal dump command like this storm 119% od -c swiggZAA02ztQE | more 0000000 G E M P A K D A T A M A N A 0000020 G E M E N T F I L E \0 \0 \0 001 0000040 \0 \0 \0 002 \0 \0 001 \f \0 \0 \0 001 \0 \0 \0 001 0000060 \0 \0 001 001 \0 \0 003 001 \0 \0 005 334 \0 \0 \0 \n 0000100 \0 \0 001 002 \0 \0 003 003 \0 \0 \0 001 \0 \0 C 201 0000120 \0 \0 \0 201 \0 \0 \0 200 \0 \0 D 001 \0 \0 \0 003 0000140 \0 \0 \0 006 \0 \0 \0 003 377 377 330 361 \0 \0 \0 \0 0000160 \0 \0 \0 \0 \0 \0 \0 \0 306 034 < \0 \0 \0 \0 \0 0000200 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 * 0001000 \0 003 341 336 \0 \0 \0 > \0 \0 \0 \0 \0 \0 \0 \0 0001020 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 \0 * 0002000 G R I D G D T 1 G T M 1 G D T 2 ... Not very easy to understand but you can see at the top the word GEMPAK and the last line I show here GRID. If they were GRIB files, the first word would be GRIB. Another possibility is to run gdinfo on the file like this storm 120% gdinfo GDFILE Grid file $JUNK LSTALL Full list flag YES OUTPUT Output device/filename T Parameters requested: GDFILE,LSTALL,OUTPUT. GEMPAK-GDINFO>gdfile = $JUNK/swiggZAA02ztQE GEMPAK-GDINFO>r GRID FILE: $JUNK/swiggZAA02ztQE GRID NAVIGATION: PROJECTION: LCC ANGLES: 25.0 -95.0 25.0 GRID SIZE: 93 65 LL CORNER: 12.19 -133.46 UR CORNER: 57.29 -49.38 GRID ANALYSIS BLOCK: UNKNOWN ANALYSIS TYPE Number of grids in file: 155 Maximum number of grids in file: 1500 NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM 1 970527/0000F042 3000 0 HAGL HLCY 2 970527/0000F042 10 HAGL UREL 3 970527/0000F042 10 HAGL VREL 4 970527/0000F042 2 HAGL TMPK 5 970527/0000F042 2 HAGL RELH 6 970527/0000F042 0 10000 SGMA PWTR 7 970527/0000F042 9700 9900 SGMA LIFT 8 970527/0000F042 9700 10000 SGMA TMPK 9 970527/0000F042 9700 10000 SGMA RELH 10 970527/0000F042 9700 10000 SGMA UREL ... One problem neither of these methods solves is figuring out what the files contain. Since translation in CODIAC changes the filenames, the information in the name is gone. You should have received emails that list which files you ordered and what dataset they were in. This will help you determine the model type. gdinfo will work to get the run time and forecast hour. This can be quite labor intensive for a lot of files but, at the moment, I don't know of any better method. Hope this helps. Let me know if you still have problems. > Sincerely, > -- > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > @ Scott B. Wigginton @ > @ Asistente de Investigaciones - Departamento de Meteorologia @ > @ Universidad de Texas A&M @ > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ > @ http://www.met.tamu.edu/personnel/students/swigg2.htm @ > @ E-mail: address@hidden @ > @ Oficina: O&M 1007 Telefono: (409) 845-1680 @ > @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Ethan address@hidden -- Ethan R. Davis Telephone: (303) 497-8155 Software Engineer Fax: (303) 497-8690 UCAR Unidata Program Center E-mail: address@hidden P.O. Box 3000 Boulder, CO 80307-3000 http://www.unidata.ucar.edu/