[ncl-talk] NCL scripts

Dennis Shea shea at ucar.edu
Thu Nov 16 06:57:56 MST 2017


Please be clear about the source definition. Otherwise, ncl-talk is
guessing:

I assume you asking about Climate Change Indices?
       http://etccdi.pacificclimate.org/list_27_indices.shtml

Specifically:  Index #25:

25: R95pTOT. *Annual total PRCP when RR > 95p*. Let *RRwj* be the daily
precipitation amount on a wet day *w (RR ≥ 1.0mm)* in period *i* and let
*RRwn95* be the 95th percentile of precipitation on wet days in the
1961-1990 period. If *W* represents the number of wet days in the period,
then:

   1.


------------------------------------------------------------
----------------------------------------
Does NCL have a library of Climate Change Indices? The answer is "no."

However, it would not be difficult to write your own NCL library of climate
index functions. Most of these functions involve sorting, counting, summing
and/or averaging. NCL has the necessary functions. For Example:

https://www.ncl.ucar.edu/Document/Functions/Built-in/dim_numrun_n.shtml
See Examples 3, 4 and 5

=====
FYI: There are fortran (*FClimDex*) and R (*RClimDex**)* libraries.  See
the ETCCDI link above.

There is (at least) one other R library:
*          climdex.pcic*: https://cran.r-project.org/
web/packages/climdex.pcic/index.html

Good Luck

On Wed, Nov 15, 2017 at 4:02 AM, Abdoulatif Bonkaney <babdoulatif at yahoo.fr>
wrote:

> Hello everyone
>
> Any NCL scripts to compute precipitation indices R95pTOT,
> R99pTOT, PRCPTOT
>
> Thanks in advance
>
> Cheers
>
> *...................................................................Abdou
> Latif BONKANEY.*
>
>
>
> *Msc in Climate chnage and Energy (Wascal/Abdou Moumouni University/
> Niamey).Speciality: Solar Photovoltaic Energy.PhD Studentd in WSCAL GRP
> West African climate systeme, department of meteorology and climate
> sciences, FUTA, NigeriaPhone: +22792584211
> <+227%2092%2058%2042%2011>/+22797997648 <+227%2097%2099%2076%2048>.*
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20171116/4b375239/attachment.html>


More information about the ncl-talk mailing list