[ncl-talk] [ncl-install] About Sum of variable

[Dennis Shea]

There are several ways to do this. A simple approach is attached.

*%>* ncl GovindJha_1.ncl


On Sun, Sep 8, 2019 at 5:12 AM Govind Jha via ncl-install <
ncl-install at ucar.edu> wrote:

> Dear Sir,
>
> I have 12 monthly netcdf files having variable called rain .I wish to
> calculate seasonal rainfall from monthly rainfall in NCL.
> for eg: monsoon season= sum of jun,july,aug and sept.
>
> How could I calculate it.
>
> Here the the monthly netcdf files.
>
>  a = "/home/gopi/Build_WRF/work/MODE_analyis/Nirmala/GPM_july_2016" ; or
> manual precipitaiton same will work
>   a1  = addfile(a+".nc","r")
>   gp = a1 ->rain
>
>
>    gsrc_lat = a1->lat            ;;---Change (maybe)
>    gsrc_lon = a1->lon           ;;---Change (maybe)
>
>       APCP = gp
>       APCP!0 = "lat"
>       APCP!1 = "lon"
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
>   a2 = "/home/gopi/Build_WRF/work/MODE_analyis/Nirmala/GPM_jun_2016" ; or
> manual precipitaiton same will work
>    a3  = addfile(a2+".nc","r")
>    gp1 = a3 ->rain
>
>    gsrc_lat = a3->lat            ;;---Change (maybe)
>    gsrc_lon = a3->lon             ;;---Change (maybe)
>
>       APCP1 = gp1
>       APCP1!0 = "lat"
>       APCP1!1 = "lon"
>
>
>    g = array_append_record (APCP, APCP1, 0)
>
>
>       gp3 = g
>       gp3!0 = "lat"
>       gp3!1 = "lon"
>
> Any help and suggestion would be highly appreciated.
>
> Thank you in advance.
>
>
>
> With Regards
>  ..................................................
> *Govind Kumar Jha*
> ...................................................
>  Assistant Meteorologist
> (Agro-Meteorology Section)
> Department of Hydrology and Meteorology (DHM)
> P.O. Box 406 Naxal, Nagpokhari, Kathmandu, Nepal
> Tel: +977 1 4436272, 4432409
> Fax: +977 1 4429919, 4432137
> www.dhm.gov.np, www.hydrology.gov.np, www.mfd.gov.np
>
> .............................................................................
>  Mobile Number: 9779846265433
>  Email Id: govind_jha65 at yahoo.com
> ..........................................................
>
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