We do a similar OpenDAP-related pull (using Python and the NetCDF4 library)
from NOMADS for the HRRR and have noticed oddities for quite a while.
Typically the files pass the "existence" test, in that no errors are detected
either when the NetCDF4 library creates a file handle to the remote file, nor
does the loading of data into an array for a particular variable (e.g., 1km AGL
reflectivity) fail, but the displayed graphic is *blank*. Similar to Brendon,
there is no pattern to the dropouts.
--Kevin
_____________________________________________
Kevin Tyle, Manager of Departmental Computing
Dept. of Atmospheric & Environmental Sciences
University at Albany
Earth Science 235, 1400 Washington Avenue
Albany, NY 12222
Email: ktyle@xxxxxxxxxx
Phone: 518-442-4578
_____________________________________________
-----Original Message-----
From: ldm-users-bounces@xxxxxxxxxxxxxxxx
[mailto:ldm-users-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Brendon Hoch
Sent: Tuesday, October 18, 2016 8:24 AM
To: Patrick L. Francis <wxprofessor@xxxxxxxxx>; Karen Cooper - NOAA Affiliate
<karen.cooper@xxxxxxxx>
Cc: LDM <ldm-users@xxxxxxxxxxxxxxxx>; NOAAPORT <noaaport@xxxxxxxxxxxxxxxx>;
nws.noaaport.support@xxxxxxxx
Subject: Re: [ldm-users] NOAAPort HRRR
Patrick,
We've noticed occasional oddities in generating HRRR products with NCL
via Opendap to NOMADS. We generate a map showing 2m Temperatures &
SLP/Radar Reflective. Most of the time it works, but occasionally, one or more
parameters are either missing or misbehaving. Last week, I started an archive
of products at http://vortex.plymouth.edu/mapwall/hrrr/archive/ to discern if
there was a pattern as to when this might be happening, but so far, no luck;
products with a file size of < 674 KB are suspect. We run our script with a 3
hour lag, which should (theoretically) be plenty of time for the model data to
arrive to NOMADS.
Brendon
--
Brendon Hoch, M.S.
MSC 48, Boyd Science Center 319
Plymouth State University
Plymouth, NH 03264
(603)535-2818 Fax: (603)535-2723
Patrick L. Francis wrote:
>
> Last week I mentioned product delivery issues for HRRR, all day today
> it has been HRRR .... as an example, here is a gempak GDINFO (for
> non-gempak people... listing all variables within a grid) by forecast
> hour for the most recent HRRRR:
>
> http://modelweather.com/files/grids/noaaport/hrrr/2016/10/17z/
>
> notice how none of the file names are the same size.. and they all
> should be (usually around 6.6K for F000 and 6.8K for F### and gempak
> usually finds 81 grids or so :(
>
> Does anyone happen to know how long this will continue?
>
> cheers,
>
> --patrick
>
> ---------------------------------------------------
> Patrick L. Francis
> Vice President of Research & Development AerisWeather.com
>
> wxprofessor@xxxxxxxxx <mailto:wxprofessor@xxxxxxxxx>
> facebook.com/wxprofessor/
> ---------------------------------------------------
>
>>>
>>
>
>
>>
>>>
>
>
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