As the Director of GISS and Principal Investigator for the GISS ModelE Earth System Model, Gavin is interested in understanding past, present and future climate and the impacts of multiple drivers of climate change, including solar irradiance, atmospheric chemistry, aerosols, and greenhouse gases. Gavin serves currently as a senior climate advisor to ensure the achievement of NASA’s climate science objectives under the Biden Administration. Gavin has a PhD in Applied Mathematics from the University College London.