[gradsusr] Problem reading sub-hourly WRF grib files (NCEP code table for 15/30 min records)

[Jeff Duda]

What about for the 30-minute file?

On Tue, Nov 7, 2017 at 12:48 PM, Ivan Toman <ivtoman at inet.hr> wrote:

> Jeff,
>
> $ wgrib2 -T wrfprs_d01.00_10.g2
> 1:0:D=20171106000000
> 2:636:D=20171106000000
> ...
>
> but:
>
> $ wgrib2 wrfprs_d01.00_10.g2
> 1:0:d=2017110600:RWMR:1 hybrid level:10 min fcst:
> 2:636:d=2017110600:SNMR:1 hybrid level:10 min fcst:
> ...
>
> That was for 10min grib converted using "cnvgrib -g12 -nv -m -p32 $f
> $f.g2" from grib1 output from UPP.
>
> Is that OK?
>
> Ivan
>
>
>
>
> On 11/07/2017 07:21 PM, Jeff Duda wrote:
>
> What result do you get when you do
>
> wgrib2 -T (grib file)
>
> ?
>
> Look after the "D=", as the represents the time in the GRIB2 file.
>
> Jeff
>
> On Tue, Nov 7, 2017 at 12:10 PM, Ivan Toman <ivtoman at inet.hr> wrote:
>
>> Hello,
>>
>> Yes it is fixed. I'm currently need to output 10 min intervals. So, for
>> full hour, 10m, 20m, 40m and 50m I get OK data. But for 30m I do not.
>>
>> Thank you!
>> Ivan
>>
>>
>>
>>
>> On 11/07/2017 05:50 PM, Jeff Duda wrote:
>>
>> What is your time interval? If it's not fixed, that's one problem. If it
>> is fixed, then I don't see why regular templating wouldn't work unless the
>> time being written to the grib2 file is not right. But there are ways to
>> fix that.
>>
>> Jeff Duda
>>
>> On Tue, Nov 7, 2017 at 10:12 AM, Ivan Toman <ivtoman at inet.hr> wrote:
>>
>>> Hello,
>>>
>>> I'm having difficulties reading sub-hourly time records from WRF grib
>>> files in GrADS.
>>>
>>> UPP follows NCEP code table for timing grib records - for 15 and 30
>>> minute records use codes 13 and 14 respectively instead of simple
>>> minutes. This seems to confuse GrADS (or g2ctl/gribmap, I'm not sure).
>>>
>>> What I get as result is that I can read any sub-hourly record as long as
>>> it is not 15 or 30 minute record. For those, I get undefined grid
>>> instead of data.
>>>
>>> I use this workflow for postprocessing: wfrout >(UPP)> grib1 >(cnvgrib)>
>>> grib2 >(g2ctl,gribmap)> GrADS
>>>
>>> Does anybody know what is going on there?
>>>
>>> Thank you in advance
>>>
>>> Ivan Toman
>>>
>>> _______________________________________________
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>>> gradsusr at gradsusr.org
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>>>
>>
>>
>>
>> --
>> Jeff Duda
>> Post-doctoral research fellow
>> University of Oklahoma School of Meteorology
>>
>>
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>>
>>
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>
>
> --
> Jeff Duda
> Post-doctoral research fellow
> University of Oklahoma School of Meteorology
>
>
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>
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-- 
Jeff Duda
Post-doctoral research fellow
University of Oklahoma School of Meteorology
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