Re: seasonal anomaly

[Andy Chiodi <chiodi@xxxxxxxxxxxxxxxxxxxx>]

Hi Wendy,

You might try using the climatological_axes script in ferret.  It defines 
monthly and seasonal timeseries which can be used to make climatologies 
and anomaly timeseries.

Creating an anomaly timeseries would go something like;

! load the timeseries
use climatological_axes
cancal data climatological_axes

! specify the grid your data is on
define grid/like=mydata mygrid

! create a (monthly) climatology
let climatology = mydata[gt=month_reg@mod]

! create the anomaly
let anomaly = mydata - climatology[gt=mygrid]


I hope this helps,
		Andy


On Wed, 26 Jan 2005, Wendy Wang wrote:

> Hi ferret_users,
>
> Does ferret have a simple way to get seasonal SST with the mean removed from 
> 20 year data?
>
> Thanks in advance.
> Wendy Wang
--
Andy Chiodi

School of Oceanography
University of Washington
Seattle, WA

chiodi@ocean.washington.edu
(206) 526-6758