Re: why i can not find wrf_helicity in WRFUserARW.ncl script in NCL 6.0

thanks for your reply.My further question is where I can find the source
code of wrf_helicity.Since I found there something to be cleared,I want to
check the source code and read how did

function calculate helicity,avo,pvo and so on.Can you help me ?

2012/2/17 Mary Haley <haley@ucar.edu>

> Dear Tang,
>
> wrf_helicity is a built-in function. It's a Fortran routine that was
> compiled into the "ncl" executable, and hence you don't need to load any
> NCL scripts to use it.
>
> If you're ever not sure if an NCL function is a built-in function versus
> one that's available only via a script, then you can go to the
> documentation page for that function and look at the "Prototype" section.
> It will tell you what script, if any, you need to load to use the function.
>
> Also, you can tell just from the URL of the function that it is a built-in
> function:
>
> http://www.ncl.ucar.edu/Document/Functions/Built-in/wrf_helicity.shtml
>
> The "Built-in" part of the URL indicates it's a built-in function.
>
> --Mary
>
> On Feb 17, 2012, at 8:22 AM, Jie Tang wrote:
>
> > hi everyone.
> > I am reading same ncl sample functions scripts and WRFUserARW.ncl in
> NCL6.0. I found
> > that there are not the key parameter about "wrf_helicity" in the
> WRFUserARW.ncl .But
> > in the sample script wrf_helicity_1.ncl ,the only load ncl scripts are
> gsn_code.ncl and WRFUserARW.ncl.
> > Can anyone tell me why and where is the wrf_helicity ?thanks
> >
> > --
> > TANG Jie
> >
> > _______________________________________________
> > ncl-talk mailing list
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>
>

-- 
TANG Jie
Email: totangjie@gmail.com
Tel: 0086-2154896104
Shanghai Typhoon Institute,China

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Received on Sat Feb 18 00:41:13 2012