[Wrf-users] WRF inmitialised with ECMWF T799 data.

[Daniel van Dijke]

Hi Jean-Louis,

After you run calc_ecmwf_p.exe (which computes pressure and geopotential at ALL levels) you should run mod_levs.exe. Atleast if you're not using all 91 ECMWF levels. This program will cut out only the levels you are using, you should define it in your namelist:

&mod_levs
 press_pa = 18.0, 39.0, 47.0, 52.0, 56.0, 60.0, 64.0, 68.0, 70.0,
            72.0, 74.0, 76.0, 78.0, 80.0, 82.0, 83.0, 84.0, 85.0, 86.0, 87.0,
            88.0, 89.0, 90.0, 91.0
/

Good luck,

Daniël 


------------------------------------------------------------------------

  Daniël van Dijke

  Junior Meteorological Researcher  

  Meteo Consult BV, Wageningen, the Netherlands

  Tel: +31 (0)317 399874

  Email: Daniel at weer.nl

------------------------------------------------------------------------



-----Oorspronkelijk bericht-----
Van: wrf-users-bounces at ucar.edu [mailto:wrf-users-bounces at ucar.edu] Namens Jean-Louis Monge
Verzonden: woensdag 21 mei 2008 22:55
Aan: Ravan Ahmadov
CC: wrf-users at ucar.edu
Onderwerp: Re: [Wrf-users] WRF inmitialised with ECMWF T799 data.

On Wednesday 23 April 2008 10:31:23 Ravan Ahmadov wrote:
> Dear Alan,
>
> I'm using ECMWF analysis data with this resolution. I use
> calc_ecmwf_p.exe in WPS to process the model level data.
>
> Cheers,
> Ravan.
>

Dear Ravan,

I also tried to drive WRF-V3 with ECMWF forecasts on model levels.
I ran WPS using Vtable-ECMWF.sigma, then calc_ecmwf_p.exe to create the PRES 
fields.
But at the WRF stage, em_real failed at the very beginning, during a vertical 
interpolation, and my conclusion, after digging into the code, was that 
em_real required the geopotential on all levels.
But Z is only available at the surface level at MARS in forecast data sets, 
not on the upper air hybrid levels.
I am curious to know how you do with ECMWF hybrid levels.
Do you run WFR-2.2.1 or WRF-V3 ? Are there, apart the Vtable and 
calc_ecmwf_p.exe, other tricks to configure or use ? What did I miss ?

Thanks
-- 
Jean-Louis Monge
Ingénieur-conseil
09 50 51 14 43
jeanlouis.monge at free.fr
_______________________________________________
Wrf-users mailing list
Wrf-users at ucar.edu
http://mailman.ucar.edu/mailman/listinfo/wrf-users


-- 

This e-mail is from Meteo Consult B.V., a MeteoGroup company. For more information, see http://www.weer.nl/gebruiksvoorwaarden.

This e-mail may contain confidential information. Only the addressee is permitted to read, copy, distribute or otherwise use this e-mail or any attachments. If you have received it in error, please contact the sender immediately. Any opinion expressed in this e-mail is personal to the sender and may not reflect the opinion of MeteoGroup.

Any e-mail reply to this address may be subject to interception or monitoring for operational reasons or for lawful business practices.