Use
http://www.ncl.ucar.edu/Document/Functions/Built-in/wgt_areaave.shtml
yanling_1220 wrote:
> Hi Everyone，
>
> I want to know if I wish to calculate the area average tas ,the "tas" is
> with 1.0*1.0 resolution,how should I do in ncl? I think the area is
> unweight，so used "tas_lat_lon_ave =
> dim_avg_Wrap(dim_avg_Wrap(tas))" ,is it right?I know in Grads,there is
> "aave（expr，lat1，lat2，lon1，lon2）" for area average specially，
> which use lat1、lat2 as the "lat" limit and lon1、lon2 as the "lon"
> limit ,then do integral operator to gain the area average,I think the
> intergral operator is more accurate then two dim_avg，does NCL have
> fuction like"aave"in Grads?
>
> Secondly, either"dim_avg"or"aave",it all calculate the average of the
> regular region(backgroud of below picture)，how can I calculate the
> average of irregular region(blue area in below picture)？The following
> picture is produced by Arcgis software. Can some body help me?Any
> suggestion will be appreciated.
>
> Regards，
> sunflower
>
>
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>
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Received on Fri Sep 18 2009 - 07:38:28 MDT
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