Re: Area Average over land

On May 7, 2012, at 1:01 PM, Soumik Basu wrote:

> Hi,
>
> Can anybody please suggest me a way to do an area average for the grid
> points over the lands only.

It depends on whether you have a "landmask" type of variable already on your file.

See example 1 at:

http://www.ncl.ucar.edu/Applications/mask.shtml

This shows you how to use "mask" to mask your data based on another array of the same size.
You can then take an average of the masked data.

If you don't have a "landmask" variable, then another way you can is using data from a shapefile,
and the "gc_inout" function. See example 9 on the same page.

--Mary

>
> Thanks,
> Soumik
>
> --
> "Numbing the pain for a while will make it worse when you finally feel
> it.
> ~J.K. Rowling"
> *****************************************
> Soumik Basu
> Graduate Student, Research Assistant
> International Arctic Research Center
> University of Alaska Fairbanks
> Fairbanks,Alaska,USA
> *****************************************
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Received on Mon May 7 15:23:49 2012