[Wrf-users] Output from metgrid.exe includes extremely high soil moisture values

[Barry Lynn]

Hi:

Please note that WPS 3.9 (latest) has a note about problems with
metgrid.exe, and high soil moisture values.

Otherwise, you may just have a time step problem (you can reduce this).
Or, choose the land use 4 option (NOAH-4, instead of NOAH-2).

Barry

On Tue, Jan 9, 2018 at 6:07 PM, 吉村 僚一 <yoshimura-r at edge.ifs.tohoku.ac.jp>
wrote:

> Dear all,
>
>
>
> I am not very good at English, so I apologize in advance.
>
>
>
> I am running WRFV3.8 with NCEP FNL 1deg by 1deg reanalysis (
> https://rda.ucar.edu/datasets/ds083.2/index.html#!description) as the
> initial and lateral condition.
>
> I have trouble getting proper soil moisture values for the initial
> condition.
>
> When I run real.exe and wrf.exe using met_em_d01* data from WPS, real.exe
> was OK, but in running wrf.exe, I got an error message below.
>
>
>
> Flerchinger USEd in NEW version. Iterations= 10
>
>
>
> So I checked soil moisture and temperature values in met_em* files, and I
> found extremely high soil moisture values in a particular land area.
>
> I attached a file of variable SM010040 , and a picture of its distribution
> below.
>
> The proper range of SM010040 values will be from 0 to 1, but in this
> picture, you will find moisture values in the particular area(41N,141E or
> 43N,144E) exceed this range by about E+20 order.
>
> In this case, I used NCEP FNL dataset at 2017/08/02 UTC. When I used
> 2017/09 dataset, the same error also occurred.
>
> But, when I used 2016/08, 2017/05 or 2017/02 dataset, wrf.exe did not
> detect any errors and I got proper initial soil moisture values.
>
>
>
> I also attached namelist.wps and Vtable.GFS for your information.
>
>
>
> If you know anything about it, please let me know.
>
>
>
> Regards,
>
> Yoshimura
>
> _______________________________________________
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> Wrf-users at ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>
>


-- 
Barry H. Lynn, Ph.D
Senior Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
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