PAOC Colloquium: Dan Chavas (Purdue University)
Using imaginary worlds to understand the tropical cyclone
Abstract: This talk will discuss the use of planetary climate simulation experiments to understand tropical cyclones on Earth. First, a hierarchy of models spanning theory, idealized aquaplanet and Earth-like climate simulations, and observations are employed to understand the physical relationship between the two widely-used measures of tropical cyclone intensity: the central pressure deficit and the peak near-surface wind speed. Second, simulations of idealized aquaplanets of different sizes and planetary rotation rates are employed to probe the underlying theoretical dependence of tropical cyclone genesis and size on the dynamical forcing imparted by an Earth-like planet. The application of these results and their limitations for explaining the rich heterogeneity of real storms on Earth will be discussed.
About the Speaker