Re: function in NCL for 10-day high pass filter

From: Jing YANG (yangjing AT
Date: Thu Oct 27 2005 - 14:09:34 MDT

Hi, Xuguang

  As to my knowledge, there are *at least" two ways in NCL you can use for band-filtering analysis (also appropriate for low-frequencey filter and high-frequncey filter).
  1) Fourier harmonics anal: using *ezfftf* and *ezfftb* together, which is most tranditional and simpliest way to extract the signals you need from a time series.
  2) Lancos filtering:, which also works well.

  Good luck!


Jing Yang *
Ph.D student *
Current address: *
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  1680 East West Road, POST Bldg.401 *
  Honolulu, *
  HI 96822 *
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