Re: Select a broad seasonal mean

Hi Yang,
You can use runave_n_Wrap:
http://www.ncl.ucar.edu/Document/Functions/Contributed/runave_n_Wrap.shtml

; arr = 3D array w/dimensions ordered/named time | lat | lon
opt = 0
temp = runave_n_Wrap(arr,6,opt,0)
arr_sondjf = temp(10::12,:,:) ; select SONDJF
delete([/arr,temp/])

You will want to investigate which end-point option to set in
runave_n_Wrap; in the example above I set opt=0.

Also note that the syntax 10::12 refers to selecting the 10th index
value, which after applying the running average = the SONDJF value, and
then incrementing every 12 index values to select the other SONDJF
indices. (See the end-point option documentation on the website above
for examples of which indices the running averages are placed in.)

Hope that helps. If not, please reply to ncl-talk.
Adam

On 09/21/2012 03:30 AM, Li Yang wrote:
> Hi,
>
> I am trying to select a broad seasonal mean from September to the
> following February[SOND(0)JF(1)]in the SST monthly data.
>
> What should I do?
> Thanks for any suggestions or info anyone might have!
>
> Best regards
> Yang
>
>
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-- 
______________________________________________________________
Adam Phillips                                asphilli@ucar.edu
NCAR/Climate and Global Dynamics Division       (303) 497-1726
P.O. Box 3000				
Boulder, CO 80307-3000    http://www.cgd.ucar.edu/cas/asphilli

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Received on Fri Sep 21 09:36:15 2012