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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
I suspect the change in the post processor, with the stated intention of making the NAM and GFS post processing schemes uniform, has eliminated a smoothing process that has heretofore existed with the 0.5 GFS model output. The "new" look of this field recalls the "noisiness" that we have typically seen with the hi-res NAM output.
Any way to see if the pre-9/25 1200 UTC fields had smoothing built-in to the postprocessor?
______________________________________________________________________ Kevin Tyle, Systems Administrator ********************** Dept. of Earth & Atmospheric Sciences ktyle@xxxxxxxxxxxxxxxx University at Albany, ES-235 518-442-4578 (voice) 1400 Washington Avenue 518-442-5825 (fax) Albany, NY 12222 ********************** ______________________________________________________________________ On Fri, 28 Sep 2007, David Knight wrote:
But that notice http://www.nws.noaa.gov/om/notification/tin07-59gfs_upgrade_unifiedpost.txt says: "THE PRIMARY IMPACT TO CUSTOMERS RECEIVING THE GFS WILL BE THAT THE DEFAULT PRECIPITATION TYPE ALGORITHM WILL CHANGE" and further "THE PRODUCTS/GRIDS WHICH ARE DISSEMINATED TO NOAAPORT AND/OR THE SATELLITE BROADCAST NETWORK /SBN/ WILL NOT BE CHANGED IN VOLUME OR CONTENT." So there appears to be more to this than that . . . David
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