Re: [ncl-talk] help installing ncl_ncarg-6.0.0

Chandra,

There is no code in NCL that calculates OLR.

wrf_user_getvar does one of two things when you give it an argument: it tries to calculate this quantity, or it looks for a variable of the same name on the file.
Since "OLR" is not a recognized quantity by wrf_user_getvar, it is looking for this variable on the file.

I believe the script you had must have been written for one of the WRF output files that had a variable called "OLR" directly in the file.

--Mary

On May 22, 2012, at 11:15 PM, Chandra Sekar wrote:

> Thanks for your reply.
>
> Actually OLR is not output from WRF. We can get only from olr.ncl script. The script giving results but I could not find the fortran code which one calculating OLR. Please help me to find the code in NCL directory otherwise please let me know the formula how NCL calculating OLR.
>
> Thanks
>
> On Wed, May 23, 2012 at 7:41 AM, wrfhelp <wrfhelp@ucar.edu> wrote:
> For some radiation options, one can get OLR in the wrf output file.
>
> wrfhelp
>
> On May 22, 2012, at 12:55 PM, Mary Haley wrote:
>
> > Chandra,
> >
> > I don't know how OLR is being calculated, because we don't have that quantity in our version of WRFUserARW.ncl.
> >
> > Are you perhaps using a modified version of WRFUserARW.ncl that somebody modified to add this quantity at your site?
> >
> > Or maybe you are loading another script entirely that has its own defined version of wrf_user_getvar?
> >
> > Are there any "load" commands at the top of your NCL script?
> >
> > --Mary
> >
> > On May 22, 2012, at 10:15 AM, Chandra Sekar wrote:
> >
> >> Dear haley
> >>
> >> I am using NCL binaries. my olr.ncl scripts working well. But I couldn't find even single olr word in WRFUserARW.ncl file.
> >>
> >> Please let me know how NCL calculating OLR from build in functions.
> >>
> >> I have entire program for calculating reflectivity.
> >>
> >> I attached both my WRFUserARW.ncl and reflectivity fortran code.
> >>
> >> On Mon, May 21, 2012 at 9:27 PM, Chandra Sekar <chanspace2020@gmail.com> wrote:
> >> Thank you so much
> >>
> >> On 21 May 2012 21:25, "Mary Haley" <haley@ucar.edu> wrote:
> >> In the future, please post your NCL questions to ncl-talk@ucar.edu, and not ncl-install@ucar.edu. The ncl-install email list is for installation questions.
> >>
> >> The "wrf_user_getvar" function is actually an NCL script, so if you ever need to see how it is calculating a quantity, you can edit the file
> >>
> >> $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
> >>
> >> and search for "wrf_user_getvar".
> >>
> >> Once you see a line that starts with:
> >>
> >> function wrf_user_getvar
> >>
> >> then you can start looking for "OLR".
> >>
> >> "OLR" doesn't appear in the wrf_user_getvar function, so this means that it will simply try to find a variable called "OLR" on your file.
> >>
> >> If you don't have such a variable, you will get an error from NCL.
> >>
> >> I couldn't find "OLR" in any of our sample wrf output files, but I did see a script that references it:
> >>
> >> http://www.mmm.ucar.edu/wrf/users/graphics/NCL/Examples/OLR/index.htm
> >>
> >> Note that this script references a file called "wrfout_d02". The files I tried were all "wrfout_d01".
> >>
> >> --Mary
> >>
> >>
> >>
> >>
> >> On May 21, 2012, at 7:26 AM, Chandra Sekar wrote:
> >>
> >>> Dear friends
> >>>
> >>> I am chandra, working in WRF also using NCL. I could not find out how ncl calculating OLR from
> >>> "olr = wrf_user_getvar(a,"OLR",-1)". please help me to where I can get the formula for
> >>>
> >>> calculating OLR in NCL directory.
> >>>
> >>>
> >>> please help me
> >>> Thanks in Advance
> >>>
> >>>
> >>> On Thu, Apr 19, 2012 at 11:26 PM, Dennis Shea <shea@ucar.edu> wrote:
> >>> The information provided is not helpful.
> >>> What did you try and what messages were returned to you?
> >>>
> >>> Please send to ncl-install@ucar.edu the output from
> >>>
> >>> %> uname -a
> >>> %> gcc --version
> >>>
> >>> On 4/19/12 11:48 AM, Gualberto Hernandez Juarez wrote:
> >>>>
> >>>> Hello
> >>>>
> >>>> I can not install on UBUNTU ncl_ncarg-6.0.0.
> >>>>
> >>>> Ayundeme please. thanks
> >>>>
> >>>> Greeting.
> >>>>
> >>>> Gualberto Hdez
> >>>> _______________________________________________
> >>>> ncl-install mailing list
> >>>> List instructions, subscriber options, unsubscribe:
> >>>> http://mailman.ucar.edu/mailman/listinfo/ncl-install
> >>> _______________________________________________
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> >>>
> >>>
> >>>
> >>> --
> >>> with regards
> >>>
> >>> Chandrasekar
> >>> PhD scholar
> >>> IIT Madras
> >>>
> >>>
> >>> _______________________________________________
> >>> ncl-install mailing list
> >>> List instructions, subscriber options, unsubscribe:
> >>> http://mailman.ucar.edu/mailman/listinfo/cl-install
> >>
> >>
> >>
> >>
> >> --
> >> with regards
> >>
> >> Chandrasekar
> >> PhD scholar
> >> IIT Madras
> >>
> >>
> >> <WRFUserARW.ncl><wrf_user_dbz.f>
> >
>
> wrfhelp
> http://www.mmm.ucar.edu/wrf/users/supports/wrfhelp.html
>
>
>
>
>
>
> --
> with regards
>
> Chandrasekar
> PhD scholar
> IIT Madras
>
>

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Received on Wed May 23 10:23:37 2012