<div dir="ltr">It looks like this issue if fixed in WRF3.6:<div><br></div><div>See the bottom of the notes here:</div><div><a href="http://www2.mmm.ucar.edu/wrf/users/wrfv3.6/updates-3.6.html">http://www2.mmm.ucar.edu/wrf/users/wrfv3.6/updates-3.6.html</a><br>
</div><div><br></div><div>Note though that within the code, the adaptive time step is limited to 1/100 of a second. </div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Jul 9, 2014 at 9:39 PM, Dr Robert Pasken <span dir="ltr"><<a href="mailto:rpasken@eas.slu.edu" target="_blank">rpasken@eas.slu.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
We are attempting to use WRFV3.4 to do a LES simulation of flow around<br>
buildings. We have topography and land use data at 10 and 3 meters and<br>
have been successful with a time step of 1/30 seconds (3.333e-2 seconds).<br>
We have been using a 1/30 timestep because of the initial shock the<br>
building create. We would like to use adaptive timestepping to let the<br>
model pick the appropriate timestep after the initial shockwaves have<br>
dissipated. Unfortunately WRF stops after the second timestep becuase<br>
dt=0.0 (see below). The namelist values seem correct as the adapative<br>
stepping works with timesteps over 1 second. Does adaptive time stepping<br>
handle time step less than a second.<br>
<br>
Cheers<br>
RWP<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><span style="font-family:arial,helvetica,sans-serif"><span style="font-size:20px"><span style="color:rgb(64,64,65)"><strong> <span style="font-size:14px">Todd </span></strong></span><span style="font-size:14px"><span style="color:rgb(64,64,65)"><strong>Hutchinson </strong></span><span style="color:#696969"><span style="font-size:16px">|</span></span></span></span><span style="font-size:14px"><span style="color:rgb(64,64,65);margin-left:5px"></span></span><br>
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