Representation of Precipitation and Convection in Variable-Resolution GCMs

Research Questions:



This project will address a current challenge in the representation of convection in climate models. Under the mentorship of Professor Christiane Jablonowski at the University of Michigan, I will investigate the whether the poor representation of precipitation in current climate models is ultimately related to how convection is traditionally parameterized. The timing and intensity of diurnal precipitation over the United States Southern Great Plains (SGP) will be investigated using process-based methods of evaluation.

Behavior of Atmospheric Rivers along the Western Coastline of North America

Atmospheric rivers (ARs) are filamentary features that play a leading role in the transport of atmospheric moisture poleward and in the global redistribution of heat from the tropics. When they cross over land (so-called landfall), they are a major source of wintertime precipitation, particularly over the western coastline of North America. The extreme precipitation and flooding that sometimes accompany landfalling ARs can have severe socio-economic consequences. Despite advances in observational networks on land, the large-scale mechanisms influencing AR behavior and landfalling intensity are poorly understood. The goal of my research is to better characterize their present-day behavior and projected response to climate change over the North Pacific basin so as to improve forecasts of their impact at landfall.

Detail 3

Role of Duration in Atmospheric River Impacts