[gradsusr] NARR Dataset - Precipitation

[Wesley Ebisuzaki - NOAA Federal]

Brian,

   In the NARR files, the fields like the winds, heights, temperature are
analyses.  The APCP is
a 0-3 hour forecast.  It's time stamp may be 3 hours after the analysis
time. (Consequently you would
have to change the time to view.)  It depends on how the ctl/idx files were
created.  More details are given by

http://www.cpc.ncep.noaa.gov/products/wesley/grib2ctl.html

Wesley Ebisuzaki


On Wed, Jan 2, 2013 at 9:16 AM, Brian Walsh <brianw at provair.com> wrote:

>  Hello,
>
>
>
> I downloaded data from the NARR model and I’m able to extract point data
> for all variables, except precipitation amount (APCP) and categorical
> precipitation types (CFRZR, CICEP, CRAIN, CSNOW). When I try to plot the
> precipitation amount data, it is saying “Cannot contour grid – all
> undefined values”, but when I run wgrib on the files, it is giving me a
> range of values for those variables.
>
>
>
> I would appreciate any insight.
>
>
>
> Thanks
>
>
>
> Brian Walsh
>
>
>
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