[Met_help] Q2 Mixing Ratio WRF Statistics

John Halley Gotway johnhg at ucar.edu
Fri Nov 6 07:59:30 MST 2009


I spoke with the WPP support person, and she needs some more information.  Could you please do the following:

Send your email to "wrfhelp at ucar.edu" and tell us whether you're running the ARW or NMM core, and also state which physics options you're using.  You could just attach the WRF namelist file you're
using which will contain that info.

When she gets that info, we'll look into what's going on and see if there's an easy way to modify WPP to get it to output mixing ratio.


Ann L Mazuk wrote:
> Thanks, John.  Any advice would be greatly appreciated!
> Ann
> From:
> John Halley Gotway <johnhg at ucar.edu>
> To:
> Ann L Mazuk <Ann.L.Mazuk at aero.org>
> Cc:
> met_help at ucar.edu
> Date:
> 11/05/2009 07:23 AM
> Subject:
> Re: [Met_help] Q2 Mixing Ratio WRF Statistics
> Sent by:
> met_help-bounces at mailman.ucar.edu
> Ann,
> I checked the WPP user's guide and see that you're correct.  WPP does not 
> derive the mixing ratio.  I've asked the scientists in our group for some 
> advice on this and will let you know what I hear back.
> Thanks,
> John Halley Gotway
> johnhg at ucar.edu
> Ann L Mazuk wrote:
>> Hello,
>> I'm assuming this is probably a WRF Post Processor question, but I have 
>> asked the WRF community for help, but have received no reply.  Thus, I 
>> thought I would try here and see if perhaps someone here can shed some 
>> light.
>> I would like to use MET to calculate mixing ratio (Q2/MIXR, grib id 53) 
>> statistics on my WRF output file.  I am using the WRF Post Processor 
> (WPP) 
>> to convert WRF output into grib1 format to use with MET.
>> It appears that WPP will read in the Q2 variable, but the WPP output 
> does 
>> not contain the Q2 variable.  So, when I run MET, it can't find any 
>> instances of Q2 in the WRF data to calculate statistics.
>> Do you have any insight or recommendations on how to calculate WRF Q2 
>> statistics using MET?
>> Thanks in advance for any help you can provide.
>> Ann

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