Re: Area average

> As you are area-averging, you should account for the difference in sizes
> of the grid boxes as the meridians converge at the poles.

Just to clarify: The meridians converge at the poles for many types of
grids, but not all. For most applications though, cosine or gaussian
weighting is highly recommended when you are area-averaging. Adam

>
>
>> Dear NCL users,
>> I want to calculate only the map area averaged and remove the area
>> outside
>> the map (sample Fig.attached). I don’t know how to calculate the
>> required map area and remove the outside area?
>> Furthermore, how does calculate time vs lon and time series plot of only
>> map area?
>> Is it correct if I use this function?
>> zArea = wgt_areaave_Wrap(z(:,{30:40},{60:72}),1.0,1.0,0)
>> but how I confirm it is only map area averaged(as indicated in Fig)?
>> Kindly, your guidance regarding this will be appreciated.
>> Thanks in advance,
>> kim
>>  
>>
>>
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Mon Mar 1 09:54:31 2010