[gradsusr] How to get annual and seasonal anomalies from monthly data

[Mubashar Dogar]

Dear GrADs users,

I have 22 years data in monthly format. I just want to calculate annual and
seasonal anomalies for say surface Temperature. I know I can get the monthly
anomalies via 'modify variable seasonal' command but how to calculate annual
and seasonal anomalies. Could you please give me a hint or a script
regarding annual and seasonal anomalies and their respective plots in GrADs?

Thanks in advance.


Regards,

Mubashar
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