>From: Owen Cooper <address@hidden> >Organization: Aeronomy Laboratory/NOAA >Keywords: 200306251740.h5PHeMLd017765 McIDAS-X GRDCOPY Hi Owen, >Hhhmmm, I'm wondering if there is a problem with the actual AVN grids. I don't know, but I suspect that it isn't. >The script that I am invoking to derive ABV has always worked fine in >the past, as I use this script duiring field missions to calculate >potential vorticity. I have a script running since yesterday and today >it was able to calculate ABV using the 6 hour forecast from the 6:00 UTC >AVN. What ADDE server are you accessing for the RTGRIDS data? This could be important (i.e., what is the result of a 'DATALOC LOST RTGRIDS'). >If you go to >http://www.al.noaa.gov/WWWHD/ALData/satellite/COMBINE_G12_MET_WV_AVN.html >an image loop will load. The loop is 25 images long and most of them are >just dummy images until I can get 6 days of near real-time images >created and loaded into the loop. But if you go the the end of the loop >you will see 4 images of WV form GOES-East and Metosat at 00, 06 and 12 >UTC on June 26. OK. I did that. >Notice that the first 2 images don't have PV at 300 hPa because the job >failed. Yes, I see that. >But the 12 UTC image does have PV (calculated from the 6-hr >forecast of the the 6:00 UTC AVN run). If you watch theis image loop as >it updates over he next few days, every 6 hours, you may detect a >pattern as to when the script fails. Hopefully, I can find the problem before several days have past. >I hope this helps, I just searched the MUG inquiry list and don't find an entry for a GRDCOPY problem like the one you are seeing. I then got the approprite permissions to access the RTGRIDS dataset on a machine at SSEC, and the DERIVE=ABV worked fine. So, there is either a big/little endian bug floating around (their box is a Solaris x86 one), or something else is different between my and the SSEC GRD* servers. I am investigating... Tom
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.