This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> Yuan, > > In all the catalogs in IDV, is there a near-real-time NetCDF version of the > Global Forecast System? Is grib my only choice? > > Murray We stopped nc version of GFS one year ago. Yuan > > ----- Original Message ----- > From: "Unidata IDV Support" <address@hidden> > To: <address@hidden> > Cc: <address@hidden> > Sent: Thursday, August 04, 2011 5:00 PM > Subject: [IDV #PYH-734212]: Problem getting GFS data to load > > > >> Yuan, > >> > >> Everything went quiet. Please let me know if you have been able to > >> reproduce my situation, or if I'm the Lone Ranger. > >> > >> Murray > >> > > > > No, we can not reproduce your problem. We can load these datasets even in > > the public WiFi network, maybe you can give it a try this way. > > > > > > Yuan > >> > >> ----- Original Message ----- > >> From: "Unidata IDV Support" <address@hidden> > >> To: <address@hidden> > >> Cc: <address@hidden> > >> Sent: Wednesday, August 03, 2011 11:46 AM > >> Subject: [IDV #PYH-734212]: Problem getting GFS data to load > >> > >> > >> >> Yuan, > >> >> > >> >> To be precise, let me repeat the situation: > >> >> > >> >> Hangup occurs with GRIB2 file, apparently not with NetCDF. The > >> >> problem > >> >> occurs at the very first step, ADD SOURCE, where it is too early to > >> >> use > >> >> striding or geographic limitation to reduce the loading (I think...am > >> >> I > >> >> wrong?). A GRIB2 file of 28 kb seems to add successfully, but just > >> >> about > >> >> anything larger results in an endless loading process. > >> >> > >> >> Murray > >> > > >> > Hi Murray, > >> > There is nothing you can do if the problem is the speed of the > >> > internet. When you adding the data in the first step, only very small > >> > amount of data transfer over the internet. > >> > > >> > > >> > Yuan > >> >> > >> >> > >> >> ----- Original Message ----- > >> >> From: "Unidata IDV Support" <address@hidden> > >> >> To: <address@hidden> > >> >> Cc: <address@hidden> > >> >> Sent: Tuesday, August 02, 2011 7:46 PM > >> >> Subject: [IDV #PYH-734212]: Problem getting GFS data to load > >> >> > >> >> > >> >> >> Dear ID Folks, > >> >> >> > >> >> >> I've previously tried to load HYCOM data, and got terribly bogged > >> >> >> down > >> >> >> in an endless load sequence. Today, I've been trying to load data > >> >> >> from > >> >> >> DATA CHOOSERS > CATALOGS > UNIDATA IDD MODEL DATA > UCAR MOTHERLODE > >> >> >> > > >> >> >> GLOBAL FORECAST SYSTEM MODEL > NCEP GFS GLOBAL 2.5 DEGREE > LATEST > >> >> >> NCEP > >> >> >> FTS GLOBAL 2.5 DEGREE ( I also tried GFS GLOBAL 2P5DEG 20110731 > >> >> >> 0600.GRIB2). > >> >> >> > >> >> >> The little download indicator in the bottom right corner of IDV > >> >> >> indicates that it's working away, but after about 1.5 hours I gave > >> >> >> up. > >> >> >> I went into the GFS files system and downloaded directly a > >> >> >> seemingly > >> >> >> innocent 3 MB grib2 global grid and tried to load it into IDV and > >> >> >> got > >> >> >> the same results as with the catalog. I downloaded a very much > >> >> >> smaller > >> >> >> CONUS grid named gfs_grb211.t06z.pgrbf00.grib2 (28 kb) and it does > >> >> >> load > >> >> >> and display in IDV. > >> >> >> > >> >> >> My version of IDV is 3.0b1, and I'm working on a plain vanilla > >> >> >> Compaq > >> >> >> laptop with Windows XP (including all updates). Have you heard > >> >> >> from > >> >> >> anyone else out there who simply cannot load large GFS or HYCOM > >> >> >> grib > >> >> >> grids? Are there any settings you know of that might help my > >> >> >> system > >> >> >> out? Are there any general guidelines on how large a grib file can > >> >> >> be > >> >> >> before loading problems begin? > >> >> > > >> >> > Hi Murray, > >> >> > It sounds like the network connection issue to me, the general > >> >> > guideline is to subset the data to limit > >> >> > the size of the data transferring over the network. You can subset > >> >> > the > >> >> > region if you don't need to see the whole region, and you can also > >> >> > apply > >> >> > strike to either dimension, the same strike can be applied to the > >> >> > time > >> >> > dimension. > >> >> > > >> >> > Hope this can help. > >> >> > > >> >> > > >> >> > Yuan > >> >> >> > >> >> >> Murray > >> >> >> > >> >> >> Murray Brown > >> >> >> 1710 Washington St., Apt. B > >> >> >> New Smyrna Beach, FL 32168 > >> >> >> United States of America > >> >> >> 386.428.6367 > >> >> >> http://oceanexpert.org/viewMemberRecord.php?&memberID=242 > >> >> >> > >> >> >> > >> >> > > >> >> > > >> >> > Ticket Details > >> >> > =================== > >> >> > Ticket ID: PYH-734212 > >> >> > Department: Support IDV > >> >> > Priority: Normal > >> >> > Status: Closed > >> >> > > >> >> > >> >> > >> > > >> > > >> > Ticket Details > >> > =================== > >> > Ticket ID: PYH-734212 > >> > Department: Support IDV > >> > Priority: Normal > >> > Status: Closed > >> > > >> > >> > > > > > > Ticket Details > > =================== > > Ticket ID: PYH-734212 > > Department: Support IDV > > Priority: Normal > > Status: Closed > > > > Ticket Details =================== Ticket ID: PYH-734212 Department: Support IDV Priority: Normal Status: Closed