[ncl-talk] SPEI calculation

[Toni Klemm]

Hi Soma,

I had the same question a few months ago. Unless something changed, there isn’t an easy way to calculate SPEI in NCL (like, there is no function). I used the SPEI package for R when I had to calculate SPEI, which took a while to learn for me (with help from colleagues), but I got my values eventually (monthly SPEI) and was able to use them in NCL from there on to aggregate to what I needed.

Toni


Toni Klemm, Ph.D.
Postdoctoral Research Associate
Department of Ecology and Conservation Biology
College of Agriculture and Life Sciences
Texas A&M University, College Station, TX
www.toni-klemm.de <http://www.toni-klemm.de/> | @toniklemm <http://www.twitter.com/toniklemm>
Editorial Board member, Early Career Climate Forum <http://www.eccforum.org/>








> On Feb 4, 2020, at 12:23 PM, Soma Roy via ncl-talk <ncl-talk at ucar.edu> wrote:
> 
> Hello NCL users,
> 
> Is there any script available in ncl to calculate SPEI for 3, 6, 9, 12 months run length?
> 
> Please kindly inform me.
> 
> Thanks,
> Soma
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