yearwise seasonal mean

[madan sigdel]

Dear users

 

I want to know the easy method or script to calculate the year wise seasonal
average (not climatology). Most of us have known enough 

about climatology. 

I have data from 1971 - 2004 and want to take average of JJA for each year.

 

Thank you in advance.

..............................

Madan Sigdel

Graduate School of Environmental Science

Hokkaido University

 

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