[Wrf-users] Minimal number of variables to run WRF (climate experiments)

[Dominikus Heinzeller]

Hi Jose

The following data is available on the UK ESGF node (in CMIP5 variable names; this is not the entire list of variables but the ones relevant for WRF). The surface variables are available at 3-hourly intervals, but you can just use the 6-hourly data (or interpolate the 6-hourly data to 3hrs in ungrib). Note that specific humidity is available at 6-hourly intervals, too (hus). This should be enough to run WRF, but it might require a few changes to the namelists (e.g., use_tavg_for_tsk to compensate for the missing 6-hourly skin temperature). This page might be helpful, too: http://www.meteo.unican.es/wiki/cordexwrf/SoftwareTools/CmorPreprocessor

3-hourly:
huss
tas
uas
vas

6-hourly (model level):
ps
hus
ta
ua
va

6-hourly (pressure level):
psl

monthly:
ts
mrlsl
tsl

static:
orog
sftlf

Cheers

Dom

On 12/07/2014, at 4:01 pm, Jose Augusto Paixão Veiga <veiga.uea at gmail.com> wrote:

> Dear all,
> 
> someone could tell me please what is the minimal number of variables necessary to make a run with WRF? I am asking this because I need to use data from HadGEM-2-ES model to force WRF for a couple of  experiments for present climate (1980-2000) and future climate (2080-2100, RCP8.5).  
> 
> In a first look at Vtable.GFS (that I usually use for my runs) I saw the data dependencies from Temperature (T), U, V, Relative Humidity (RH), Height, T at 2 m, RH at 2 m, U at 2 m, V at 2 m, Surface Pressure, Sea-Level-Pressure, Soil Moist for 4 layers, T bellow ground for 4 layers, Ice flag, Land/Sea flag, Skin Temperature, terrain field, water equivalent snow depth and physical snow depth.  
> 
> However, for ESGF portal where I intend download data from HadGEM-2-ES experiments the available variables, at 6/6h frequency, are just 6: T, U, V, Sea-Level-Pressure, Specific Humidity and Surface Air Pressure, i. e., there are no variables of RH, T at 2m, U and V at 2 meters, T skin (or SST) among others cited before. So, how can I run WRF?  
>  
> I really appreciate if some one could help me with this doubt.
> 
> José Augusto P. Veiga, 
> 
> ======================================
> Coordenador do curso de Meteorologia da UEA
> Universidade do Estado do Amazonas 
> Departamento de Meteorologia
> Escola Superior de Tecnologia (EST)
> -----------------------------------------------------------------------------
> Av. Darcy Vargas, 1200, Manaus-AM Brasil
> Work phone:    (92) 3878 4333, Ramal 4333
> Cell   phone :    (92) 8196 7122
> Skype: veiga_j.a.p.
> -----------------------------------------------------------------------------
> CV: http://lattes.cnpq.br/4027612512091565
> URL:http://scientificmet.wordpress.com/
> -----------------------------------------------------------------------------
> 
> 
> 
> _______________________________________________
> 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/20140714/0e087265/attachment.html