[Wrf-users] Domain Wizard and hyperbolic tangent stretching
Craig Mattocks
mattocks at mac.com
Tue Feb 7 09:48:22 MST 2012
Hi Milivoj,
Several people have asked me this question, so I am posting this information to the WRF users list.
I obtained permission from the OU-CAPS group to port the vertical coordinate stretching algorithm from the ARPS model (still an excellent, accessible, very well written NWP model) for use with WRF as part of the NSF LEAD cyberinfrastructure project.
I converted the Fortran algorithms to Java, then worked with Jeff "Gandalf" Smith at NOAA/ESRL, who incorporated it into the WRF Domain Wizard.
Documentation on the stretching algorithms is available from the ARPS model web site:
http://www.caps.ou.edu/ARPS/arpsdown.html
Please let me know if you have any other questions.
Best,
Craig
On Feb 7, 2012, at 11:22 AM, Milivoj Kuzmic wrote:
> Dear Dr. Mattocks,
> My apologies for interrupting your undoubtedly busy schedule. Hope you
> spare a moment to help me out with this one. Namely, I am using Domain
> Wizard to setup WRF runs and would appreciate any information on how
> exactly are the WRF eta levels calculated in Vertical Editor when
> hyperbolic tangent stretching is applied (the formula, parameters
> description, exact meaning of entries in Non Linear Level Generator).
> Thanks very much in advance for your time.
> Best regards,
> Mike Kuzmic
>
> --
> ------------------------------------------------------------------------
> Dr Milivoj "Mike" Kuzmic, Head Internet: kuzmic at rudjer.irb.hr
> Satellite Oceanography Laboratory
> Marine & Environmental Research Division
> Rudjer Boskovic Institute web: www.irb.hr
> P.O.Box 180 fax: +385-1-456 0969
> 10002 Zagreb, Croatia phone: +385-1-456 1139
> ------------------------------------------------------------------------
>
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