Re: [netcdfgroup] Ingesting netCDF files in AWIPS

• To: Michael Mclane <michael.mclane@xxxxxxxx>
• Subject: Re: [netcdfgroup] Ingesting netCDF files in AWIPS
• From: Dave Allured <dave.allured@xxxxxxxx>
• Date: Fri, 29 Jun 2012 15:48:33 -0600

Michael,

This question may be more appropriately directed to the AWIPS user
list or support system.  I mention this only because no one else has
spoken up yet.

If you were able to display this grid with any sort of partial
alignment over a map surface, then AWIPS has some special input
capabilities that are different than the geolocation methods that are
commonly discussed on this user list.  Note in particular, the lack of
CF conforming lat and lon coordinate variables as described here:

   http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.6/ch05.html

If AWIPS is capable of generating the correct coordinates using only
the projection parameters in the header, then you just need to debug
the parameters, rather than adding coordinate variables.  That
capability is what you need to look into.  HTH.

--Dave

On Thu, Jun 28, 2012 at 1:51 PM, Michael Mclane <michael.mclane@xxxxxxxx> wrote:
> I have a raster grid I am trying to convert to netCDF and ingest into AWIPS.
> I am using ArcMap to do the raster to netCDF conversion. The header info in
> the file, specifically the global attributes, require editing to enable the
> grid to be ingest into AWIPS. Our IT folks have been able to get the grid to
> display, but it is flipped. the header below is what we  currently have
> specified in the file. Anyone have any insight on what needs to be changed?
>
> netcdf 1hr100yr {
> dimensions:
> x = 2612 ;
> y = 1397 ;
> variables:
> float ari(y, x) ;
> ari:long_name = "1 Hr 100 Year Event" ;
>
> // global attributes:
> :depictorName = "tp_1hr100Year" ;
> :projIndex = 8 ;
> :projName = "CYLINDRICAL_EQUIDISTANT" ;
> :centralLat = 0.f ;
> :centralLon = 0.f ;
> :rotation = 0.f ;
> :dxKm = 1.f ;
> :dyKm = 1.f ;
> :latDxDy = -124.7542f ;
> :lonDxDy = 31.3292f ;
> :xMin = -124.7542f ;
> :xMax = -102.9876f ;
> :yMin = 31.3292f ;
> :yMax = 42.97082f ;
> :lat00 = 31.3292f ;
> :lon00 = -124.7542f ;
> :latNxNy = 42.97082f ;
> :lonNxNy = -102.9876f ;
> }
>
>
> Thanks!
>
> --
> Mike McLane
> Senior Service Hydrologist
> National Weather Service Forecast Office
> Phoenix, Arizona
> (602) 275-7002, Ext. 228
>
>
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• References:
  • [netcdfgroup] Ingesting netCDF files in AWIPS
    • From: Michael Mclane