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<DIV><SPAN class=050511815-17062008><FONT face=Arial
size=2>Hello!</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>we are running a
setup of 3 nested grids with WRF-ARW (v3) over Galicia (NW Iberian Peninsula),
with dx=36,12 and 4 km.</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>We are testing the
adaptive time step with this grid configuration, and with the following set of
physics:</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>Radiation: Longwave
RRTM, Shortwave MM5-Dudhia</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>PBL: YSU (with
sfclay: Monin-Obukhov from MM5 MRF)</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>Surface: 5 layer MM5
LSM</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>Cumulus:
Kain-Fritsch</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>Microphysics:
WSM6</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=050511815-17062008><FONT face=Arial size=2>With this setup we
have experienced some problems related with Kain-Fritsch (we guess). After about
40-50 hours of simulation, error messages appear in the WRF output
textfiles:</FONT></SPAN></DIV>
<DIV><SPAN class=050511815-17062008><PRE><I>WOULD GO OFF TOP: KF_ETA_PARA I,J,DPTHMX,DPMIN</I></PRE><PRE><FONT face=Arial size=2>where NaNs appeared for DPTHMAX</FONT></PRE><PRE><FONT face=Arial size=2>We have tested with Betts-Miller-Janjic cumulus parameterization, and although no error messages appeared, wrfout files also have some NaNs inside.</FONT></PRE><PRE><FONT face=Arial size=2></FONT> </PRE><PRE><FONT face=Arial size=2>Do you have any suggestions? Thanks in advance!</FONT></PRE><PRE><FONT face=Arial size=2></FONT> </PRE><PRE><FONT face=Arial size=2>Eduardo Penabad<BR>MeteoGalicia</FONT></PRE><PRE><FONT face=Arial size=2></FONT> </PRE><PRE><EM></EM> </PRE></SPAN></DIV>
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