Domain Averaged Precipitaion

Hello,

I am doing the WRF model output validation and may need to calculate a
domain averaged variables like precipitation etc. to compare with the
observations.
My question is that the WRF simulation I conducted is with a lambert
projection so the XLAT and XLONG variable are both two-dimensional.But
in the NCL function wgt_areaave
(http://www.ncl.ucar.edu/Document/Functions/Built-in/wgt_areaave.shtml)
all the examples give me the impression that we can only give it a 1
dimension range of the lat and lon to specify the domain you want to
be averaged.So in this way,this function can not work for the wrfout*
variables,right?
What I am thinking about is that seems I must reproject the wrfout*
variables into a native lat and lon which each coordinate is 1
dimension.Is that what people do with wrf output data to get a domain
average?Or can anyone share with me how you do it in this case?

Thank you for any coming help in advance.

Best Regards,
Lisi
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Received on Thu Nov 3 13:50:10 2011