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[netCDFJava #KDU-752210]: NetcdfDataset converts whole-world grib record to all longitude 180

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  • Subject: [netCDFJava #KDU-752210]: NetcdfDataset converts whole-world grib record to all longitude 180
  • Date: Fri, 10 Feb 2012 13:07:10 -0700
Hi Edward:

The problem is that the grib record has both begin and end lon = 180. 
Obviously they mean the entire cylinder, and it would be better practice to use 
-180 for the begin lon.
Anyway, ill add a fix to the next release.

thanks for reporting this problem.

John

> Full Name: Edward Glen
> Email Address: address@hidden
> Organization: MetService New Zealand
> Package Version: 4.3 alpha and git trunk
> Operating System: Ubuntu 10.04
> Hardware:
> Description of problem: Hi,
> 
> I have a grib2 record (attached) obtained from
> http://dd.weatheroffice.gc.ca/model_gem_global/high_resolution/grib2/lat_lon/
> 
> When converting this to NetCDF using both the 4.3 (alpha) release and
> a clean build from the git trunk (as of Feb 9, 0100 UTC), I obtain the
> attached netCDF file.
> 
> The problem with the netCDF file is that all of the values for the
> longitude dimension are 180, rather than spanning from -180 to 180 as
> wgrib2 shows for the record:
> 
> wgrib2 -domain CMC_glb_TMP_ISBL_925_latlon.6x.6_2012020800_P144.grib2
> 1:0:N=90.000000 S=-90.000000 W=-180.000000 E=180.000000
> 
> I'm hoping you have some ideas as to how/why this is happening along
> with an easy fix or workaround.
> 
> Cheers,
> -Edward
> 
> 


Ticket Details
===================
Ticket ID: KDU-752210
Department: Support netCDF Java
Priority: Normal
Status: Closed