Committee on Hydrogen Research. She completed her B.S. in Chemistry in 1985 at the University of Wyoming. Ms. Baker is suited to the committee due to her expertise in cleaning spacecraft (e.g., swabbing and culturing) in preparation for missions and knowledge of contamination prevention in general.

Dr. Garry Clarke is a professor of geophysics in the Department of Earth and Ocean Sciences at the University of British Columbia. His research specialty is glaciology and his particular expertise is in subglacial physical processes, subglacial hydrology, the stability of glaciers and ice sheets, and cryospheric agents of abrupt climate change. He has spearheaded a 35-year glaciological field study in the Yukon Territory, Canada, that involves drilling and extensive use of subglacial instrumentation. He is also active in the development of theory and computational models of glacier and ice sheet dynamics. Dr. Clarke has served as President of the International Glaciological Society and the Canadian Geophysical Union and received the highest scientific awards of both these organizations. He is a Fellow of the Royal Society of Canada, the American Geophysical Union, and the Arctic Institute of North America. He currently serves on the editorial board of Quaternary Science Reviews and is an Associate Editor of the Journal of Geophysical Research. He previously served on the NRC’s Committee on Glaciology. Dr. Clarke received his doctorate in physics in 1967 from the University of Toronto. His breadth and depth of knowledge in glaciology and subglacial processes bear directly on the study topic. In addition to theoretical knowledge, he brings many years of practical experience of drilling and sampling in subglacial environments.

Dr. Peter T. Doran is an associate professor and graduate director in the Earth and Environmental Sciences department at the University of Illinois at Chicago (UIC). His research is based in east Antarctica as part the multidisciplinary Long Term Ecological Research (LTER) site in the McMurdo Dry Valleys. He also carries out NASA-funded research using the dry valleys as analogs for past environments on Mars. He is currently lead-PI on a NASA-funded project to test a planetary drill in an ice-sealed dry valley lake. External committee experience includes being a sitting member and current chair of the National Science Foundation’s McMurdo Area Users Committee and past member of two NASA review panels. He is also an associate editor on the Journal of Geophysical Research Biogeosciences. Dr. Doran received his doctorate in Hydrology/Hydrogeology from the University of Nevada, Reno. His practical knowledge of sampling challenges and methodologies in cold environments and his knowledge of community discussions and planning for drilling and sampling of subglacial environments are particularly relevant to this study.

Dr. David Karl is a professor of oceanography at the University of Hawaii. His research interests include marine microbial ecology, biogeochemistry, long-term time-series studies of climate and ecosystem variability, and the ocean’s role in regulating the global concentration of CO2 in the atmosphere. Dr. Karl was elected to the National Academy of Sciences in 2006 and he currently serves on the Proceedings of the National Academy of Sciences Editorial Board. He has been a member of the Polar Research Board and has served on the NRC’s Committee on a Science Plan for the North Pacific Research Board and the Planning Committee for the International Polar Year 2007-2008, Phase 2. He received his doctorate in oceanography in 1978 from the Scripps Institution of Oceanography at the University of California, San Diego. Dr. Karl has expertise in

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