NAM downscaled grids (5 km CONUS, 6 km AK, 2.5 km HI, PR)

A new NAM product, downscaled grids, officially began to be disseminated across NOAAPort in December.
In AWIPS, these are labeled NAMdng, where DNG stands for Downscaled NWP [Numerical Weather Prediction] Grids.
These products downscale the 12-km NAM forecast to a finer grid using the same terrain fields used for the RTMA and using the full set of model fields available at NCEP.

The NAM DNG products appear in AWIPS in both D2D and GFE and can be used to substitute for the "NAM12" GFE products which use downscaling algorithms limited to the vertical levels and parameters of data available in AWIPS.

Details and comparison between the GFE "NAM12" and DNG products are presented on the DNG pages of the COMET Operational Models Matrix at
http://www.meted.ucar.edu/nwp/pcu2/
scroll down around 80% toward the bottom of the page, to the row labeled Postprocessing/Products, and click on the NAM DNG link in the NAM column.
Today, I am still working on the discussion for temperature, dewpoint, and wind - these are coming shortly. However, all background and the discussions for PoP and sky cover are complete, and side-by-side comparisons for temperature, dewpoint, and wind are there already too. I highly recommend making sure that the Java installed in your web browser has sufficient memory to display the comparison loops. Instructions are provided on the web page containing the loops.

Stephen