Parameterizations set

Topics related to current and future physics in the WRF as well as any problems you may have.

Parameterizations set

Postby giseleSZ » Mon Nov 24, 2008 2:42 pm

Hi
I'm starting to run WRF and I want to change and test different physical parameterizations (convection, microphysical...). Please, someone could inform me where can I change the physical options? Thanks.
giseleSZ
 
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Re: Parameterizations set

Postby wrfch » Tue Nov 25, 2008 8:25 am

Hi,

If you want to try out different parametrization schemes, you can change the physics options in the &physics portion in the file "namelist.input" in WRFV3/run/ folder.

Different schemes used can be controlled through values of mp_physics, cu_physics, bl_pbl_physics, sf_surface_physics, etc in the namelist.

You can refer to README.namelist in the run/ folder or WRF Userguide to know which values pertain to which scheme.

It would be advisable to read WRF technical documents or specified references to know the basis of each scheme and select which one is most suitable for your simulation.


regards,
wrfch
 
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Re: Parameterizations set

Postby giseleSZ » Thu Nov 27, 2008 2:48 pm

Hi,
I run WRFV2 and I didn't find the path /run/folder from WRFV3 in order to change the physics options.
I have found /wrf/docs/nmm_README and then a file nmm_intro.README. In this file the parametrization schemes are specified and I can't modify anything because there isn't this possibility. What can I do?
giseleSZ
 
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Re: Parameterizations set

Postby wrfhelp » Mon Dec 01, 2008 12:04 pm

You need to change the options in the namelist.input file - it is in the run/ directory.
The online tutorials and users guides are good places to start to see how to do this.

ARW:
http://www.mmm.ucar.edu/wrf/users/docs/ ... tents.html (See specifically chapter 5)
http://www.mmm.ucar.edu/wrf/OnLineTutorial/index.htm

NMM:
http://www.dtcenter.org/wrf-nmm/users/d ... /index.htm (see chapter 5)
http://www.dtcenter.org/wrf-nmm/users/O ... /index.php
wrfhelp
 
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