[Wrf-users] WRF help, TSK simulated with urban canopy model

[Peng Fu]

I also checked the TSK at local 1:00 AM, I think it is pretty good, and
corresponds well to the land cover patterns.

 

 

 

-Peng

 



 

From: Xiaoming Hu [mailto:xhu at ou.edu] 
Sent: Monday, March 21, 2016 11:23 AM
To: Peng Fu; wrf-users at ucar.edu
Subject: Re: [Wrf-users] WRF help, TSK simulated with urban canopy model

 

Fu,Peng

During daytime, it is reasonable that urban TSK is lower than the rural TSK
since urban area has larger heat capacity.    
See in my case
daytime:        nighttime 
http://www.caps.ou.edu/micronet/WRF-UCM/FocusON_OKC/WRFV3.4.1/YSU/wrfNARR5dW
SM6_UCM.2003071700/wrfout_d05_TSK_25.png

You may read some relevant paper, e.g., 
Hu, X.-M., P. M. Klein, M. Xue, J. K. Lundquist, F. Zhang, and Y. Qi (2013),
Impact of low-level jets on the nocturnal urban heat island intensity in
Oklahoma City <http://journals.ametsoc.org/doi/abs/10.1175/JAMC-D-12-0256.1>
. J. Appl. Meteor. Climatol., doi:10.1175/JAMC-D-12-0256.1. 

Cheers!
Xiaoming


On 03/21/2016 10:00 AM, Peng Fu wrote:

Hello,

 

Below is the MODIS land use data used in WRF. The red is the urban area.

Right now the simulation of surface temperature (TSK) from WRF is much
better than what I have before.

 

But the problem is that surface temperatures in the non-urban regions is
higher than those in the urban regions (I expect higher temperature in the
urban areas).

So what might be the problem?   The time for the TSK map is local tine 10
AM.

 

 

MODIS land use data



 

TSK simulation



 

From: xiaoming Hu [mailto:yuanfangcan at hotmail.com] 
Sent: Wednesday, March 09, 2016 5:20 PM
To: Peng Fu; wrf-users at ucar.edu <mailto:wrf-users at ucar.edu> 
Cc: Xiaoming Hu
Subject: RE: [Wrf-users] WRF help, TSK simulated with urban canopy model

 

Is this nighttime TSK? 
If those red spots match with the urban land use categories?   If so,  I
think it is probably reasonable. 
I don't see anything wrong with the namelist

Cheers!
Xiaoming 
http://faculty-staff.ou.edu/H/Xiaoming.Hu-1/


  _____  


From: fupenghzau at gmail.com <mailto:fupenghzau at gmail.com> 
To: wrf-users at ucar.edu <mailto:wrf-users at ucar.edu> 
Date: Wed, 9 Mar 2016 15:38:29 -0500
Subject: [Wrf-users] WRF help

Hello,

 

I set up three one-way nested domains to simulate surface temperature. But
it look the temperature data is too noisy.

Could someone provide me some suggestions on this?  

I also attached my namelist.input file. 

 

Thanks!

 

 

-Peng 

 

 

 

TSK





MODIS






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