<div>Davide,</div><div> </div><div>Thanks. Do you know is it possible to show the results in the vector form? </div><div> </div><div>Thanks,</div><div>--<br clear="all">Djordje<br><br></div><div class="gmail_quote">On Wed, Aug 8, 2012 at 5:05 PM, Davide Sacchetti <span dir="ltr"><<a href="mailto:davide.sacchetti@arpal.gov.it" target="_blank">davide.sacchetti@arpal.gov.it</a>></span> wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote">gradient:<br>
<br>
component X: cdiff(press,x)/(2*"_resX")<br>
<br>
component Y: cdiff(press,y)/(2*"_resY")<br>
<br>
being:<br>
_resX='(cdiff(lon,x)/2*3.1416/180*cos(lat*3.1416/180)*6.37e6)'<br>
_resY='(cdiff(lat,y)/2*3.1416/180*6.37e6)'<br>
<br>
bye bye<br>
<br>
Davide<br>
<div><div class="h5"><br>
On Wed, 2012-08-08 at 10:46 +0200, Djordje Romanic wrote:<br>
> Dear Users,<br>
><br>
> I have to calculate the pressure gradient in a given area (Southeast<br>
> Europe) and I have a pressure date at 2.5 x 2.5 degrees (reanalysis<br>
> data). Does anyone know how to calculate it in GrADS and how to show<br>
> the results in the vector form?<br>
><br>
> Thanks in advance.<br>
><br>
> Regards,<br>
> Djordje Romanic<br>
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--<br>
--> Attenzione cambio indirizzo: <a href="mailto:davide.sacchetti@arpal.gov.it">davide.sacchetti@arpal.gov.it</a><br>
--<br>
Davide Sacchetti<br>
Centro Funzionale Meteo Idrologico di Protezione Civile della Regione Liguria<br>
ARPAL Unità Tecnica Complessa di livello Regionale<br>
V.le Brigare Partigiane 2 16121 Genova (I)<br>
tel: <a href="tel:%2B39%20010%206437535" value="+390106437535">+39 010 6437535</a> fax: <a href="tel:%2B39%20010%206437520" value="+390106437520">+39 010 6437520</a><br>
mail: <a href="mailto:davide.sacchetti@arpal.gov.it">davide.sacchetti@arpal.gov.it</a> web: <a href="http://www.meteoliguria.it" target="_blank">www.meteoliguria.it</a><br>
<br>
<br>
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</blockquote></div><br>