[ferret_users] Intraseasonal Lanczos Bandpass

To: ferret_users@xxxxxxxx

Subject: [ferret_users] Intraseasonal Lanczos Bandpass

From: Nabil Balbeid <nabil.balbeid@xxxxxxxxx>

Date: Tue, 23 Jul 2013 21:59:48 +0700

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Dear ferret users

I'm new in ferret..

I want to ensure my self that i'm in the right way.

I Looking for MJO (Madden Julian Oscillation) event from my daily data (Wind 850 pHa, OLR, SST). 20 - 90 days period of cut off frequency (1/20=0.05; 1/90=0.01111). 69 of total weight. This is the right way ??

Following from Duchon Lanczos Journal to ferret syntax, I wrote

nabil@nabil-desktop:~/bandpass_duchon$ ferret

NOAA/PMEL TMAP

FERRET v6.84

Linux 2.6.18-308.1.1.el5 64-bit - 12/18/12

23-Jul-13 21:43

yes? use SST.nc

yes? let FSST=LANCZOS(SST,0.01111,0.05,69)

yes? SAVE/file=indopass.nc FSST

yes? LISTing to file indopass.nc

Need your advice

Thank's