RE: [ncl-talk] High Pressure Ridge Identification Algorithm?

From: Alex Gardner <alexg_at_nyahnyahspammersnyahnyah>
Date: Tue, 2 May 2006 13:51:15 -0600

Thank you very much for the help Dennis,

The min and max functions will do what I want. What I eventually want to do
is output the min value, lat and long for each month of a 2 year monthly
mean netCDF file for the region North of 60 deg North. Ideally I would like
to run a script that could output a single txt file with the year, month,
value, lat, and long for each month of the 24 months the netCDF. Does anyone
have a script where they have used the locmin or locmax functions with a
netcdf file and output the results as a txt file?

Any help would be greatly appreciated.


-----Original Message-----
From: Dennis Shea []
Sent: Monday, May 01, 2006 3:35 PM
Subject: Re: High Pressure Ridge Identification Algorithm?

>I know it's a long shot, but does anyone know if there is an atmospheric
>ridge detection (from netCDF files) function that has been developed for
>NCL? I'm looking to develop statistics on ridging event over a particular
>region and was hoping that maybe someone has done similar work.

I know of no ready made software.

Having said that ...
What do you mean by "atmospheric ridge detection"?
Are you talking about atmospheric "blocks" ?
ie: blocking highs , blocking patterns
There are functions that can automate detection
of local min and max of 2D fileds
An example is at:
good luck
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Received on Tue May 02 2006 - 13:51:15 MDT

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