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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Gregg, The mosaics I produce in GEMPAK are from level III data. I produce them both as grids and images. Level II could be done, but some sites (DOD/FAA) aren't available. Ken Howard/Steve Vassilov and group at NSSL is producing a level II mosaic in 2d and 3d for use with QPESUMS. They are doing more processing to remove clutter, brightband freezing level and sun attenuation etc. and have gridded volumes. I have aded the display of these NetCDF grids to my GEMPAK release. We are hoping that they will make the data available via IDD in the near future. See: http://www.unidata.ucar.edu/Presentations/UPCsemseries/NMQ_UnidataPres_New.pdf Other references http://www.copernicus.org/erad/2004/online/ERAD04_P_105.pdf http://ams.confex.com/ams/pdfpapers/86485.pdf http://ams.confex.com/ams/32Rad11Meso/techprogram/paper_95704.htm http://www.nssl.noaa.gov/wrd/wish/q2/agenda.shtml Steve Chiswell Unidata User Support On Wed, 2005-12-21 at 13:00, Gregory Grosshans wrote: > Steve, > > I'm trying to gather additional information about level-II mosaic > imagery for N-AWIPS. Its my understanding you have software to create > radar level-II mosaic data that is displayable in the Unidata N-AWIPS. > > Can you please provide information about the data format (e.g. image > data and type of image format, or a gempak grid) and perhaps why you > chose one format (e.g. image over a gempak grid, or vice versa) over > another? Also, what type of CPU processing is required to create the > level-II mosaic and what resolution is the mosaic? What characteristics > of the Unidata version of N-AWIPS allows the data to be displayed (e.g. > array x had to be increased)? > > Thanks, > Gregg >