[ncl-talk] seasonality remove and trend

[Debasish Hazra]

Hi,
I am analyzing 25 years monthly data (300 months) of a variable and would
like to measure the trend of the variable from beginning to the end of the
time. Questions are :
1. How do I remove the seasonal variability by using a 12-month running
average prior to computing the linear trend. What function in NCL to be
used.
2. Is there any weighted least square linear regression available in NCL to
be used for regression and trend analysis ?

Appreciate your suggestions.
Thanks,
Deba
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