[Wrf-users] Adaptive step with a time step of less than 1 second

[Dr Robert Pasken]

We are attempting to use WRFV3.4 to do a LES simulation of flow around 
buildings. We have topography and land use data at 10 and 3 meters and 
have been successful with a time step of 1/30 seconds (3.333e-2 seconds). 
We have been using a 1/30 timestep because of the initial shock the 
building create. We would like to use adaptive timestepping to let the 
model pick the appropriate timestep after the initial shockwaves have 
dissipated. Unfortunately WRF stops after the second timestep becuase 
dt=0.0 (see below). The namelist values seem correct as the adapative 
stepping works with timesteps over 1 second. Does adaptive time stepping 
handle time step less than a second.

Cheers
RWP