One month simulation

[rob]

Greetings everyone, I'm new to this forum.
I want to run WRF over one month, in the past.
Is it ok to run a single simulation for the whole period, or it should be splitted in chunks of few days with some spin-up period for each chunk?
Thank you
Roberto

[meteoadriatic]

Hello,

Yes it is OK to do it as a single run, but feed it with frequent boundary conditions updates.

[rob]

Thank you!

I have set up three nested domains because I want to produce a 50x50 output with 4km gridsize and then use the output to run the diagnostic model CALMET at higher resolution, after processing the WRF output with CALWRF.

I am using the "--dset cfsrpt25" flag that seems to be the suggested one for this analysis, but I see there are several datasets available. Is there another one to be preferrred for Italy? Also, should I use --nudge and --analysis flags?

At the moment I've made a run for one month (Jan 2016), with these commands:

ems_prep --domains 2,3 -dset cfsrpt25 -date 20151230 -length 816 -nudge
ems_run --domains 2,3

And got some hourly CALMET results that compared with the observations at an airport do not have too much to do with

Thank you for any comment and best regards

[meteoadriatic]

Hello,

...
And got some hourly CALMET results that compared with the observations at an airport do not have too much to do with

If this:

I have set up three nested domains because I want to produce a 50x50 output

means that your domain size is 50x50 points, this is most likely the cause.

Refer to this:
http://www2.mmm.ucar.edu/wrf/users/name ... c_wps.html
(section named "e_we and e_sn")

But there also can be other reasons for problems. First correct that, try again, if there is no big improvement then let us know.