[gradsusr] shifted pollutants

[Jeff Duda]

What is the format of the attached file file_grads? I don't know what
software to use to read it. Is it an image? Is it code?

Anyway, the most likely reason you're seeing a "shift" is because you have
mis-specified the PDEF, XDEF, or YDEF entries in your control file (I
presume you are using a control file rather than using sdfopen to read the
data in Grads). This is causing a projection error. You can use ncdump -h
and ncdump -v [VAR] to output the values of the projection parameters for
your LC projection (unique to your WRF domain) and use the grads user guide
section on writing control files to construct the correct PDEF, XDEF, and
YDEF entries.

Jeff Duda

On Fri, Jan 8, 2016 at 8:38 AM, Júlio Barboza Chiquetto <julio22 at gmail.com>
wrote:

> Hi Kontantina,
> By shifted you mean that it changes the species of pollutants you are
> trying to display? Can you describe the problem a bit more and the commands
> you used?
> I don't think I'll be able to solve you issue, but at least I'll try to
> help you identifying it. Have you used ARWpost to generate the ctl file?
> Perhaps there's something wrong in the namelist.ARWpost, since in ncview
> you mentioned everything was ok. Send your namelist.ARWpost too if you can.
> Kind regards,
>
>
>
> Júlio B. Chiquetto,
>
> Doutorando em Climatologia
> USP - Geografia Física
>
> PhD Student in Climatology
> University of Sao Paulo - Physical Geography
>
> On 8 January 2016 at 07:06, Konstantina mangouta <kon_maggouta at yahoo.gr>
> wrote:
>
>> Dear all,
>>
>> i am running wrf chem and i plot my results to grads.
>> When i see my results to ncview everything seems al right. However, when
>> i see my results to grads, pollutants are shifted.
>> I use lambert conformal projection.
>> I am not sure if the problem is due to the post prosessing (grads) or due
>> to the model.
>> Please find attached the plots at grads and ncview.
>>
>> Thank you in advance for your help,
>>
>> Kontantina,
>> PhD student
>>
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>>
>
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>


-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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