Re: to calculate climatological average

From: Dennis Shea (shea AT XXXXXX)
Date: Fri Jan 18 2002 - 20:10:02 MST

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> I have such a netcdf file,
> in which the variables, for example, TS(240,64,128), has 240 monthly-means. I
> want to calculate the climatological average of Jan through Dec of the 20 years.
> How can I succeed this?

I assume the variable has dimension names, say,
TS(time,lat,lon)

There are several functions in "contributed.ncl" that can be used.
For example:

load ".../contributed.ncl"
begin
:
TS = f->TS ; TS(time,lat,lon) ==> (240,64,128)

TS_clm = clmMonTLL(TS) ; ==> TS_clm(12,64,128)

Also, the interannual variability (ie: standard deviation) can
be derived via

TS_std = clmStdTLL(TS) ; ==> TS_std(12,64,128)

end

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