[Wrf-users] Nesting problem, HGT=0 in WRFV3.7 and WRFV3.7.1

[Francisco Salamanca Palou]

Dear all,
The solution to this problem is running with the same "sf_urban_physics"
option in all the domains (personal communication from J. Dudhia from NCAR).
All the best
Francisco

On Sun, Jan 17, 2016 at 12:45 AM, Mikhail Titov <titovm at mail.com> wrote:

> Hi all,
>
> I definitely have the same problem with ARW WRFv3.7 using NOAH lsm and
> sf_urban_physics > 0.
> Maybe WRF Help will help to clear up this questine?
> By the way is there any experience in modelling WRF NMM with NOAH lsm to
> compare with other LSM models?
> I will make several NMM runs with different LSM and will let all know if
> there is a serious difference
> in the output variables and how about HGT (HZMAX, HSTDV).
>
> Dr M Titov (PhD - env.sc)
> Research Professor (Physical Dep. MSU, KAUST)
>
> *Sent:* Friday, January 15, 2016 at 9:06 AM
> *From:* "Francisco Salamanca Palou" <fsalaman at asu.edu>
> *To:* wrfhelp <wrfhelp at ucar.edu>, "wrf-users at ucar.edu" <wrf-users at ucar.edu
> >
> *Subject:* [Wrf-users] Nesting problem, HGT=0 in WRFV3.7 and WRFV3.7.1
> Dear WRF users,
> I have a notable problem using WRFV3.7 and WRFV3.7.1 with more than 2
> nested domains (the simulations with only one domain are fine). I do not
> have this problem with previous versions of WRF using the same
> "namelist.input" and the same "met_em.d0*" files.
> When I am running the Noah-LSM with an urban module (i.e.,
> sf_urban_physics = 1,2 or 3) the limits of the inner domain (see attached
> figure for 2 nested domains) have HGT =0 and this fact destroys the
> simulation producing unrealistic values for the wind speed, air
> temperature, etc.
> Curiously with the option sf_urban_physics =0 the simulation is fine.
> Other WRF's users (see Users forum "Nesting" section) have found the same
> problem.
> Any help/idea to solve this issue will be greatly appreciated.
> All the best
> Francisco
>
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>
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