[Wrf-users] About how to get typhoon center and its pressure

[Eric Altshuler]

Dear Sun Jia, 


You need sea level pressure, which is not provided in the raw WRF output. You can get SLP by post-processing the data (e.g. using ARWpost or NCL). The sum of P and PB gives the pressure on model levels, which is strongly influenced by surface terrain. 


Best regards, 


Eric L. Altshuler 
Research Scientist 
Center for Ocean-Land-Atmosphere Studies 
253 Research Hall, Mail Stop 6C5 
George Mason University 
4400 University Drive 
Fairfax, VA 22030 USA 

E-mail: ela at cola.iges.org 
Phone: (703) 993-5725 
Fax: (703) 993-5770 

----- Original Message -----
From: "孙佳" <sunjiaouc at sina.com> 
To: "wrf-users" <wrf-users at ucar.edu> 
Sent: Tuesday, August 20, 2013 10:07:34 AM 
Subject: [Wrf-users] About how to get typhoon center and its pressure 



Dear All, 
I am trying to simulate a tropical cyclone process by runing WRF model(Version3.5), and finally get a not that bad result. But when I want to get the center and its minimum pressure, I met the problem. 

In "wrfout*" files, variables "P" and "PB" is "perturbation pressure" and "base pressure" respectively. The contour of PB on land is extremely lower than 1013hPa, and I think it's caused by a higher terrain on land. So this is my problem, how can I get the center of a typhoon and get its minimum pressure excluding the impact of the terrain? 

Thank you so much for your time! 

2013-08-20 





谨祝顺祺！ 
WITH BEST WISHES! 

JIA, SUN 
TEL: (+86)15077857866 
E-MAIL: SUNJIAOUC at SINA.COM 
PHYSICAL OCEANOGRAPHY LAB 
HOHAI UNIVERSITY 
1 XIKANG, GULOU, NANJING, JIANGSU PROVINCE, CHINA, 210098 
_______________________________________________ 
Wrf-users mailing list 
Wrf-users at ucar.edu 
http://mailman.ucar.edu/mailman/listinfo/wrf-users 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/wrf-users/attachments/20130903/476631d9/attachment.html