David S. Nolan
Rosenstiel School of Marine and Atmospheric Science
University of Miami
The Roles of Geophysical Turbulence in Tropical Cyclone Dynamics, How We Model These Processes, and How Well We Do It
Geophysical turbulence plays a large role in all atmospheric processes,
and tropical cyclones are certainly no exception.
In this talk I will review the turbulent phenomena that are associated with tropical cyclones on four distinct scales: the synoptic-scale atmosphere, the inner-core and eyewall, the planetary boundary layer, and the surface layer.
For each case I will discuss the relevant turbulent process, how we believe
they contribute to tropical cyclone dynamics and intensity change, and
how they are modeled in state-of-the-art numerical simulations. While
it seems that the largest scales are very well simulated, and that
parameterizations of the smallest scales work surprisingly well, the
intermediate scales remain challenging and are currently a significant
limiter for simulating inner-core structure.