My research uses climate and earth system models to understand how anthropogenic processes, including climate change, affect the hydrologic cycle and the terrestrial biosphere. These include topics such as the past and future of drought variability and risk, how land use and management (e.g., irrigation) affect extreme events like heat waves, and how the terrestrial biosphere responds and influences the climate system. To address these questions, I draw from my diverse training in climatology, land surface processes, and ecology. I have participated as a contributing author on the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (Working Groups I and II) and the Fifth National Climate Assessment in the US. My textbook, Drought: An Interdisciplinary Perspective, was published by Columbia University Press in 2019.