Search found 16 matches

by vonjack
Sun Feb 17, 2013 9:36 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

Update: after some days of observation/simulation comparation I see that main problem is strong T2 underestimation during daytime (5-6C) The model height is correct. I think that the problem is related to snow cover effect. Model is initialized from Gfs with Snow Cover=1, but there is no snow for re...
by vonjack
Sun Feb 03, 2013 12:55 pm
Forum: Hardware for running WRF / EMS
Topic: WRF EMS Benchmark results and hardware
Replies: 160
Views: 99286

Re: WRF EMS Benchmark results and hardware

My configuration: CPU i5 3450 3.1 GHz 8 GB RAM DDR3 1600Mhz Basic System Information for localhost System Date : Sun Feb 3 09:47:08 2013 UTC System Hostname : localhost System Address : 127.0.0.1 System OS : Linux Linux Distribution : CentOS release 6.3 (Final) OS Kernel : 2.6.32-279.19.1.el6.x86_64...
by vonjack
Mon Jan 28, 2013 9:42 pm
Forum: Show your forecast web sites
Topic: FINWRF
Replies: 5
Views: 7752

Re: FINWRF

Hi Boogie,

I see you are using 3dVAR to initialize your model.
Are you using WRFEMS? If so, do you know if there's a way to integrate it with 3DVAR?

Thank you!

Bye
by vonjack
Mon Jan 28, 2013 9:39 pm
Forum: EMS Hacking
Topic: Local Data
Replies: 3
Views: 4492

Re: Local Data

Hi all!

I've been reading about 3dVAR data assimilation system for WRF.
I think that's just what I was looking for... Isn't it?

Is there a way to integrate with wrfems?

Thanks!!!!
by vonjack
Wed Jan 23, 2013 9:31 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

Update: I'm monitoring model output on 2 location: my town (Thiene), that is at the foot of the mountains, and another town (Asiago), that is at 1000m. After few days of testing, I can say: T2 is generally underestimated (2-3°C) in my town, all over the day, http://www.avmeteo.it/wxmeteogram_thiene....
by vonjack
Sun Dec 09, 2012 10:13 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

Some news:

my actual setup is
MP WSM6
PBL MYJ

USGS terrain data

Now RH2m prediction follows better the measured values, but in theese days with very low min temperatures t2m is very overestimated (measured -11°C, model output 1°C, in a town on the moutains near here).
by vonjack
Tue Nov 20, 2012 10:10 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

Ok,
In a few days i should give you results of theese tests.

By now, thanks a lot!
by vonjack
Tue Nov 20, 2012 8:31 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

Maybe this can help to understand the problem.
Image below is rh2m map over smallest domain.
My location is the point named Thiene, as you can see rh around my area is very lower than
surrounding area.

Image
by vonjack
Tue Nov 20, 2012 8:06 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

I attach 2 images, first is observed rh2m, second is model output. As you can see, humidity is understimed during all the day. Observed http://www.avmeteo.it/hum.png Model (second graph) http://www.avmeteo.it/wrf_img/timeline_thiene.png And this is namelist.wrfm: &time_control start_year = 2012, 201...
by vonjack
Tue Nov 20, 2012 6:34 pm
Forum: Legacy EMS (WRFEMS 3.2 and lower) support
Topic: 2m RH underestimated
Replies: 13
Views: 9191

Re: 2m RH underestimated

2 new runs with WSM6, and still the same problem.
Right now RH2m from model output is 70%, observed is 87%


Should I try with another MP scheme?
Or could it be something else?

Thank you for your patience!