[Wrf-users] Land surface model (NOAH) in idealized 2hill

[Ehsan]

Hi,

Thank you for the message. The time step is 1 sec right now. Can I decrease
it more?

Ehsan

On Tue, Feb 14, 2012 at 3:06 AM, Agnes Mika <agnes.mika at bmtargoss.com>wrote:

> Hallo Ehsan,
>
> Ehsan wrote:
> > >> I want to use NOAH scheme in idealized 2hill case. One of my fiend
> did it
> > >> for WRF v2.2. I modified my friend's code for WRF v3.3. While there
> is no
> > >> error in compilation and running ideal.exe, but after running wrf.exe
> this
> > >> error appears and program stops running:
> > >
> > >> forrtl: severe (174): SIGSEGV, segmentation fault occurred
> >
> >  Flerchinger USEd in NEW version. Iterations=          10
> >  d01 2007-03-21_06:00:00           89 points exceeded cfl=2 in domain d01
>
> The error message says that 1.) there is a violation of the CFL
> criterium (the model becomes unstable) and 2.) the solution for the
> Flerchinger equation in the NOAH scheme does not converge within 10
> iteration steps. This usually happens when soil temperatures are below
> 0 deg C.
>
> Reducing your timestep should help with both problems.
>
> Good luck,
> Agnes
>
> --
> Dr. Ágnes Mika
> Advisor, Meteorology and Air Quality
>
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-- 
Ehsan Erfani
PhD Student, Teaching and Research Assistant
Atmospheric Sciences
University of Virginia
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