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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
>From: John Merrill <address@hidden> >Organization: UCAR/Unidata >Keywords: 200304211702.h3LH2U7U024577 >Hello, > What would be the best approach for me to determine the availability >of gridded fields for global models at >levels above those with which I am already familiar? My interest is in p >< 50 hpa, all the way up to 0.1 hPa >if possible. Are there global model runs with fields at such levels >distributed routinely? I know of several >models where the levels extend this high, but have the impression that >the (understandable) interest of most >users falls off, and so does the distribution. Thanks for any guidance >you can provide. John > John, The NWS doesn't send the levels above 100mb on NOAAPORT for the global GFS and UKMET grids (eg the source of the HDS data feed). However, the NOGAPS model data (NOGAPS/FNMOC feed) and GFS (via CONDUIT) contain levels of 70, 50, 30, 20, 10 mb. NOGAPS fields for example: 668 030421/1200F012 70 PRES VREL 669 030421/1200F012 70 PRES HGHT 670 030421/1200F012 70 PRES UREL 671 030421/1200F012 70 PRES TMPK 672 030421/1200F012 70 PRES DPDK 673 030421/1200F012 50 PRES TMPK 674 030421/1200F012 50 PRES HGHT 675 030421/1200F012 50 PRES UREL 676 030421/1200F012 50 PRES VREL 677 030421/1200F012 50 PRES DPDK 678 030421/1200F012 30 PRES TMPK 679 030421/1200F012 30 PRES HGHT 680 030421/1200F012 30 PRES VREL 681 030421/1200F012 30 PRES UREL 682 030421/1200F012 30 PRES DPDK 683 030421/1200F012 20 PRES VREL 684 030421/1200F012 20 PRES TMPK 685 030421/1200F012 20 PRES UREL 686 030421/1200F012 20 PRES HGHT 687 030421/1200F012 20 PRES DPDK 688 030421/1200F012 10 PRES HGHT 689 030421/1200F012 10 PRES VREL 690 030421/1200F012 10 PRES UREL 691 030421/1200F012 10 PRES TMPK 692 030421/1200F012 10 PRES DPDK GFS fields for example: 241 030421/1200F000 70 PRES TMPK 242 030421/1200F000 70 PRES HGHT 243 030421/1200F000 70 PRES UREL 244 030421/1200F000 70 PRES AVOR 245 030421/1200F000 70 PRES OZMR 246 030421/1200F000 70 PRES VREL 247 030421/1200F000 50 PRES AVOR 248 030421/1200F000 50 PRES HGHT 249 030421/1200F000 50 PRES VREL 250 030421/1200F000 50 PRES OZMR 251 030421/1200F000 50 PRES UREL 252 030421/1200F000 50 PRES TMPK 253 030421/1200F000 30 PRES HGHT 254 030421/1200F000 30 PRES OZMR 255 030421/1200F000 30 PRES TMPK 256 030421/1200F000 30 PRES AVOR 257 030421/1200F000 30 PRES VREL 258 030421/1200F000 30 PRES UREL 259 030421/1200F000 20 PRES TMPK 260 030421/1200F000 20 PRES HGHT 261 030421/1200F000 20 PRES UREL 262 030421/1200F000 20 PRES AVOR 263 030421/1200F000 20 PRES OZMR 264 030421/1200F000 20 PRES VREL 265 030421/1200F000 10 PRES UREL 266 030421/1200F000 10 PRES AVOR 267 030421/1200F000 10 PRES HGHT 268 030421/1200F000 10 PRES TMPK 269 030421/1200F000 10 PRES VREL 270 030421/1200F000 10 PRES OZMR Steve Chiswell