[gradsusr] How to calculate the pressure gradient?

[Jeff Duda]

The pressure gradient is simply 1/rho * del(p), where del(p) is the
gradient operator, which can be displayed in Grads using the mathematical
decomposition of the gradient operator (i.e., derivatives in the x- and
y-directions).  Use cdiff for those derivatives.  Note, you'll have to
define your x- and y- grid spacing values as well.  See the examples
on the cdiff
help page <http://www.iges.org/grads/gadoc/gradfunccdiff.html> for how to
do that.

Jeff Duda

On Wed, Aug 8, 2012 at 5:48 AM, Djordje Romanic <djordje8 at gmail.com> wrote:

> Dear Users,
>
> I have to calculate the pressure gradient in a given area (Southeast
> Europe) and I have a pressure date at 2.5 x 2.5 degrees (reanalysis data).
> Does anyone know how to calculate it in GrADS and how to show the results
> in the vector form?
>
> Thanks in advance.
>
> Regards,
> Djordje Romanic
> M.Sc. in Meteorology
> Cell: +38164 254 3539
> www.linkedin.com (Djordje Romanic profile)
>
>
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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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