Average zone wind

[Satyaban BishoyiRatna]

Dear Ismael
    I think you want to plot the Latitude-Height crossection of average zonal windof august. Is the three years data in a single file or in three different file ? and your output are how much time interval ?
Any way if it is in a single file you have to write three 'define' statement.

open your XXXXX.ctl file

you first average for august 2000 and define it simillarly for 2001 and 2002.
such as
define u2000= ave(u,t= ,t= )       {i.e average between two time}
define u2001= .....
define u2002= .....
now for three year average you can define again
define u3year= (u2000+u2001+u2002)/3

set lev 1000 100  (pressure from 1000-100)
set lat -20 20  (latitude from -20 to 20)


now as u wish you fix any particular longitude or you can average for long variation

set lon 120
d u3year

I think now you can do your jub.

Regards
Satyaban


On Thu, 15 Sep 2005 Mohamed wrote :
>  Hi there, I would like to have a plot of average zonal wind for pressure levels using Grads. Could anyone help me with a script for that?I want for example to average uwind for august of 2000, 2001, and 2002 (three months average for different years) on the domain define by a longitude rang, and latitude rang, and pressure levels. The output graph must look like this: Latitude in the x-coordinates (ex. from -20 to 20) and pressures in the y-coordinates (1000 -100 mb).Thanks to allIsmael
>
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