L. Ruby Leung is a Battelle Fellow at the Pacific Northwest National Laboratory. Her research broadly cuts across multiple areas in modeling and analysis of climate, water cycle, and extreme events. Ruby is the Chief Scientist of the U.S. Department of Energy’s Energy Exascale Earth System Model (E3SM), a major effort involving over a hundred earth and computational scientists and applied mathematicians to develop state-of-the-art capabilities for modeling human-Earth system processes on DOE’s next generation high performance computers. She has published over 600 papers in peer-reviewed journals.