I am generally interested in the behavior of nonlinear smooth and nonsmooth dynamical systems, with applications to climate. I am currently working with Dick McGehee, on questions related to nonsmooth dynamics and energy balance models. My graduate work investigated the influence of albedo parameterization in Arctic sea ice models and the reversibility of a 'tipping point' associated with sea ice loss. In graduate school I worked with Mary Silber and participated actively in the Mathematics and Climate Research Network.
In addition to climate dynamics, I am interested in conceptual modeling of social and biological systems. I have also worked with problems in symbolic dynamics, mathematical biology, and the theory of difference equations.