[gradsusr] gribmap not working with grib2 ice

[Jennifer Adams]

I see. From the NCEP docs it looks like this template needs an extra  
grib2 code in the units field to be unique: the statistical process  
(code table 4.10) AND the type of spatial processing used (code table  
4.15). Where can I get a data sample?
--Jennifer



On Jun 22, 2011, at 1:09 PM, Wesley Ebisuzaki wrote:

> Jennifer,
>
> PDS Template 4.15 was designed for regridding a field.  For example,  
> you
> have
> a high-resolution field that you want to send to the field as a
> low-resolution grid.
> A pilot may want to know the average and peak winds in his 1x1  
> degree box
> for flight planning.  That would more practical than giving, for
> example, a 8 km grid.
> All template 4.15 tells you that the grid was converted into a new  
> grid
> and how
> the conversion was done.
>
>
>      Wesley
>
> Jennifer Adams wrote:
>
>   *extracted*
>> This is GrADS telling you that the library couldn't get the field.
>>
>> PDS Template 4.15 is not in the WMO docs, but it is in the NCEP grib2
>> docs:   " * Average, accumulation, extreme values or other
>> statistically-processed values over a spatial area at a horizontal
>> level or in a horizontal layer at a point in time" *
>>
>> Even with the newer library, I don't see how GrADS can support that
>> PDT -- it sounds like a number not a grid. Maybe wgrib2 can digest
>> your file and return data values, if it is linked with the newer
>> version of the library.
>>
>> --Jennifer
>>
>>
>
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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