[gradsusr] How to Calculate Vector Wind composites using Grads

[gibies george]

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On 25 February 2016 at 10:02, kalyan chakravarthy <kalyan4space at gmail.com>
wrote:

> Dear Users,
>
> Good Morning. I want to calculate the vector wind composites during active
> and break periods of monsoon season using grads. Below is the script used
> to calculate the composites. But I think the script doesn't work well.
>
> reinit
> set xlopts 1 3 0.15
> Set ylopts 1 3 0.15
> Set arrowhead -0.4
> sdfopen uwind850mb2009.nc
> sdfopen vwind850mb2009.nc
> set lat -40 30
> set lon 30 120
> set lev 850
> set mpdset rupres
> set background 0
> set display color white
> set map 1 1 15
> set gxout vector
> set cthick 8
> define u1=ave(uwnd,t=31,t=50)
> define v1=ave(vwnd.2,t=31,t=50)
> define u2=ave(uwnd,t=56,t=75)
> define v2=ave(vwnd.2,t=56,t=75)
> define u=(u1+u2)/2
> define v=(v1+v2)/2
> d u;v
> draw title 850mb Composite winds during break period 2009
> printim Breakcomposite2009.jpg
> clear
>
> Thanks & Regards,
> Kalyan
>
>
>
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