Hi,
You can do it by NCL. Look at the following example for 20-100
days filter.
;--- 20-100 days bandpass ---
ihp = 2
sigma = 1.0
nWgt = 201
fca = 1./100.
fcb = 1./20.
wgt = filwgts_lanczos(nWgt, ihp, fca, fcb, sigma)
x_day_filter= wgt_runave_Wrap(x_day, wgt, 0)
Regards,
--ufuk
On 10/23/13 7:57 AM, pyarimohan maharana wrote:
I
currently have a daily model output for 20 years over Indian
region, but I need to filter it to
study different intraseasonal oscillation (10-20days, 40-60day
etc) during the Indian summer monsoon period. Does anybody
have a grads script for this or any help??
Thanks
Pyarimohan
Maharana
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