[Wrf-users] Instability

[Sam Drinkard]

List,

    I've been encountering terrible stability with real data runs for 
about the last 5 days.  The model is such: WRF V. 2.1, with two domains, 
36 & 12km, timesteps of 150 and now, down to 10 on the inner, which had 
been running perfectly at 30 secs.  33 levels, phys opts=3, PBL Opt =1, 
WE = 100, SN =90.  Nothing has really changed in the setup except the 
input data, but it seems that this instabilty started last week when we 
had a rather strong system move through here.  I've tried a few 
modifications here and there but nothing seems to keep the inner domain 
from throwing CFL's very shortly after starting the run (on average, 
only seeing maybe 5 hours out of a 48 hour simulation)  Any suggestions 
that might help this brain tired feller get it back to a steady run ?

Thanks...

-- 
Snowman