[Wrf-users] WRF YSU-scheme PBL Heights

[Sen Chiao]

David,

I did find this problem in wrfv2.1. I got negative pbl height!
The thermal profile is the key factor. That's why when you see the  
abrupt change from 5 to 8, i.e., cooling after sunset.


SC


On Mar 11, 2008, at 5:40 PM, David Ovens wrote:

>
> Hello,
>
> Is anyone out there calculating their own PBL heights for the WRF YSU
> scheme?  As you could see on any of these loops
>
> http://www.atmos.washington.edu/~ovens/loops/wxloop.cgi?wrfd2_pblht 
> +/3/72/3
>
> the PBLH field is way too low, < 50 m, much of the time in many
> locations.  Notice in the following loop,
>
> http://www.atmos.washington.edu/~ovens/loops/wxloop.cgi?wrfd2_pblht 
> +2008031112/12/15/1
>
> the abrupt change in PBLH from 5 pm to 8 pm over the land.
>
> Thanks.
>
> David
> --
> David Ovens		 e-mail: ovens at atmos.washington.edu
> Research Meteorologist    phone: (206) 685-8108
> Dept of Atm. Sciences      plan: Real-time MM5 forecasting for the
> Box 351640                        Pacific Northwest
> University of Washington          http://www.atmos.washington.edu/ 
> mm5rt
> Seattle, WA  98195               Weather Graphics and Loops
>                                   http://www.atmos.washington.edu/ 
> ~ovens/loops
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--
Sen Chiao, Ph.D., Assistant Professor
Marine and Environmental Systems
Florida Tech, 150 W. University Blvd, Melbourne, FL 32901
321.674.8008 (O) http://my.fit.edu/~schiao