Re: Trying to calculate vertical wind shear

Thanks for the reply. But I could not understand how to get the vertical
gradient du/dz or d(pt)/dz with that function?

Thanks,
Soumik

Dennis Shea wrote:
> The function to use is
>
> https://www.ncl.ucar.edu/Document/Functions/Built-in/pres_hybrid_ccm.shtml
>
> This calculates the pressure at every grid point level.
> It can be placed in your 'pt' calculation.
>
> *** Please use "printVarSummary" often. ****
>
> On 11/15/2010 11:45 AM, sbasu@iarc.uaf.edu wrote:
>> Hello,
>>
>> I am trying to calculate the vertical gradient of potential temperature
>> and zonal wind. I am trying to use 'center_finite_diff_n' method in
>> NCL.So
>> far I am able to plot d(pt)/dp, pt-potential temp. Is it possible to
>> calculate du/dz and d(pt)/dz by this method ?
>> My dataset is standard output from CAM 3.1_p2 output files. I am
>> attaching
>> the script I am using.
>> I am getting this error:
>> fatal:center_finite_diff_n: r must either be a scalar, a 1D array the
>> same
>> length as the dim-th dimemsion of q, or the same size as q
>> fatal:Execute: Error occurred at or near line 58 in file
>> baroclinincity_Xseries5.ncl
>>
>> Thanks,
>> Soumik
>>
>>
>>
>>
>>
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>
>
> --
> ======================================================
> Dennis J. Shea tel: 303-497-1361 |
> P.O. Box 3000 fax: 303-497-1333 |
> Climate Analysis Section |
> Climate & Global Dynamics Div. |
> National Center for Atmospheric Research |
> Boulder, CO 80307 |
> USA email: shea 'at' ucar.edu |
> ======================================================
>

-- 
*************************************
Soumik Basu
Graduate Student, Research Assistant
International Arctic Research Center
University of Alaska Fairbanks
Fairbanks,Alaska,USA
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