J. Adv. Model. Earth Sys., submited 9/14.

Characteristics of tropical cyclones in high-resolution models in the present climate

Daniel A. Shaevitz
Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY.

Suzana J. Camargo
IRI, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY

Adam H. Sobel
Department of Applied Physics and Applied Mathematics and Department of Earth and Environmental Sciences, Columbia University, New York, NY.

and co-authors (see manuscript for full list).

Abstract

The global characteristics of tropical cyclones (TCs) simulated by several climate models are analyzed and compared with observations. The global climate models were forced by the same sea surface temperature (SST) in two types of experiments, using a climatological SST and interannually varying SST. TC tracks and intensities are derived from each model's output fields by the group who ran that model, using their own preferred tracking scheme; the study considers the combination of model and tracking scheme as a single modeling system, and compares the properties derived from the different systems. Overall, the observed geographic distribution of global TC frequency was reasonably well reproduced. As expected, with the exception of one model, intensities of the simulated TC were lower than in observations, to a degree that varies considerably across models.