[gradsusr] calculating the trend for summer seasons

[Gürol Çerçi]

Hello,

I have a monthly precipitation data set, 3 dimensional (lat, lon, time) in
netcdf format.

For a specific grid point, I want to calculate the linear trend between
1979-2012 for total summer values (June+July+August).

Any tips to do that as the easiest way? (I have already the script to
calculate the linear trend).

For example:
set lat 10
set lon 160
set t something
then what to write?

Thanks...
-- 
Gürol Çerçi
Meteorological Engineer
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