[Wrf-users] Sigma levels to geopotential heights (in meters)

[Seyed Omid Nabavi]

Dear Paula,

First of all, thanks for your time.

I also use NCL to map data and I am sure this command will help in next
steps of the study.
But at the moment, I want to produce dust maps in geopotential layers not
vertical interpolation. As you know, we analyze atmospheric data more based
on constant pressure layers. for example wind streams in 500 hPa. Since,  I
want to convert sigma layers to geopotential heights (in meters) and then
depict dust particles in any single layers.
For instance: the concentration of dust particles in 850 hPa not in sigma
layer 4,5, 15..... etc.

Thanks again,



On Wed, Mar 26, 2014 at 5:11 PM, Paula Doubrawa <pdoubraw at indiana.edu>wrote:

> Hi, Seyed
>
> You can use your geopotential heights at the sigma levels to interpolate
> your variables... I always do it with ncl, and it's very easy with the
> function
>
> wrf_user_intrp3d (see here<http://www.ncl.ucar.edu/Document/Functions/WRF_arw/wrf_user_intrp3d.shtml>
> )
>
>
>
>
>
>
> On Wed, Mar 26, 2014 at 11:43 AM, Seyed Omid Nabavi <omid.nabavy at gmail.com
> > wrote:
>
>> Dear all,
>> I am trying to map forecasted dust storms in different geopotential
>> heights , not sigma levels, from wrfout file.
>> I used formula hPa=PH+PHB/g to calculate this parameter, but as you
>> absolutely know it returns geo-heights in sigma levels. While I am trying
>> to replace sigma level by geo-heights and sort forecasted data based on it.
>>
>> Maybe it is a commonplace command, but unfortunately I could not find it
>> on the net,
>> Thanks in Advance,
>> --
>>
>> ===========================================
>>
>> Seyed Omid Nabavi;
>>
>> PhD student, University of Vienna,
>>
>> Faculty of Earth Sciences, Geography and Astronomy
>>
>> Department of Geography and Regional Research
>>
>> UZA II Althanstrasse 14 A-1010 Vienna
>>
>> Uni. Email: a1276905 at unet.univie.ac.at
>>
>> ===========================================
>>
>> _______________________________________________
>> Wrf-users mailing list
>> Wrf-users at ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>>
>>
>
>
> --
> *Paula Doubrawa*
> PhD Student
> Atmospheric Sciences Program
> Department of Geological Sciences
> Indiana University
>



-- 

===========================================

Seyed Omid Nabavi;

PhD student, University of Vienna,

Faculty of Earth Sciences, Geography and Astronomy

Department of Geography and Regional Research

UZA II Althanstrasse 14 A-1010 Vienna

Uni. Email: a1276905 at unet.univie.ac.at

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