locating trough / ridges

[Matias Mendez]

Hi Ron,

I found a source code (fortran 90) for objective trough/jet in gridded
data. It was developed by G. Berry (SUNY) to get African easterly waves
activity. You can get it here:

http://www.atmos.albany.edu/student/gareth/source.htm

The Input data can be streamfunction or zonal and meridional winds. The
output consists of several fields including trough and jet axes in both
easterly and westerly flow. I've attached an example output plotted with
GrADS.

I hope this can help you or at least give you an idea. Good luck.

Regards,
Matias


El jue, 04-06-2009 a las 15:03 -0600, Goodson,Ron [Edm] escribió:
> Hi
>
> Anybody got some scripts or otherwise up their sleeve to automatically
> locate ridge and trough lines  in contour plots .. and then draw them
> in?
>
> I'm expecting not, but happy to be surprised.
>
> tks
>
> ron goodson
> environment canada
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