Home > Community > How to visualize the ITCZ with GRADS? Please help me
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Masayo Hanyuda

How to visualize the ITCZ with GRADS? Please help me

Chris Nash  Follow

Hi Hasan Musavi,
In GrADS, there is a function that seeks for local maxima, maxloc(expr,dim1,dim2<,tinc>), which you can identify the maximum precipitation points. May be you can search the precipitation line meridionally from the climatology maps, then connect the dots.
Above method can be little bit unstable, as the actual precipitation locally fluctuates.
Otherwise, you can ask Evan Weller in Monash Uni, Australia; as I understand, he wrote some nice code for detecting precipitation convergence lines from the model outputs.
Cheers,
WonMoo

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China - World Leader.  Follow

thanks WonMoo Kim  and Hi 
I sent the massage for him.
thank you

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Muhammad Zulfiqar  Follow

thank you(it would be definitely do-able using GrADS maxloc() function. You may want to further polish with some maskout() function to provide any criterion of your liking)
it is very good. thank you very much

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Caro A  Follow

Hi Hasan Musavi,
Great! Based my experience, it would be definitely do-able using GrADS maxloc() function. You may want to further polish with some maskout() function to provide any criterion of your liking. 
Above can be done within GrADS script while ~ endwhile loop to connect the dots found.
Good luck!

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