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Approximately 536 unique domains have downloaded GEMPAK since January 2003. There have been 67 unique domains that have downloaded GEMPAK 5.6.K since it was released on August 11, 2003 ( 220 and 256 unique domains have downloaded versions 5.6.J and 5.6.h respectively). Web portal developments are being implemented to provide more information on downloads.
Release engineering on GEMPAK 5.6.L.1 is almost complete. Several user addition/requests are being evaluated for inclusion.
GEMPAK 5.6.L encompasses many GUI and product improvement as well as decoder modifications for evolving data sets and user requirements. Additional functionality in GRIB2 encoding/decoding has been added which is currently in use for the NDFD products.
The GEMPAK training workshop dates have been set for October 27-29, 2003 and will be held in the UCAR Corporate Training Center in the new Center Green complex. The past several workshops have been conducted during summer months, and we hope that the fall dates available for this year's workshops will appeal to users that are not able to attend during the summer. We expect the 2004 workshop to be held in August. As of September 24, there were 14 registrations for GEMPAK (16 is the maximum the room can accommodate).
New capabilities have been added to GEMPAK grid programs in support of accessing large grids including the National Digital Forecast Data Base (NDFD) 5 KM grids.
The maximum grid size that can be stored in a GEMPAK file may now be larger than the maximum number of grid points used for calculation and display purposes. To access grid files with grids larger than the maximum display limit, the grid must be subset to not exceed LLMXGD grid points. The subset can be specified using an area (GAREA) or by specifying points using a new GEMPAK parameter IJSKIP which specifies the number of points to skip in each direction and/or the beginning and ending grid point number in each direction. In addition, if the parameter is set to "YES", then it will automatically calculate the optimum skip factors to display the maximum number of grid points for the geographic region defined by the GAREA parameter. Look for the GEMPAK help on IJSKIP for additional details when available.
See the new feature summary for a description of included changes.
Iowa State is actively using GEMPAK radar mosaics with their mesonet products in GIS applications. To facilitate this process, I developed the GEMPAK program NEX2IMG to generate composite images which can be used with a file to provide GIS navigation information. Daryl Herzmann has put together a How-To document to help other sites set up their own radar mapservers.
Web pages and documentation for GEMPAK 5.6 have been updated.
COMET case studies are compatible with the GEMPAK/NAWIPS environment, and are being made available via the CODIAC system.
All the handouts/displays for the GEMPAK workshop are been made available through the GEMPAK web page tutorial. Included in the presentation are numerous sample exercises and output samples. This format of presentation allows workshop participants to be able to review or utilize any of the material at their home institution. The tutorial is updated as new features dictate.
The GEMPAK tutorial can be found here.
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