Committee and Staff Biographies

Richard Alley (Chair) is Evan Pugh Professor of Geosciences and an Associate of the College of Earth and Mineral Sciences Environment Institute at the Pennsylvania State University. Professor Alley studies past climate change by analyzing ice cores from Greenland and Antarctica. He has demonstrated that exceptionally large climate changes have occurred in as little as a single year. His work on deformation of subglacial tills has given new insights to ice-sheet stability and the interpretation of glacial deposits. Ongoing work on ice-flow modeling may lead to predictions of future sea-level change. Related interests include metamorphic textures of ice, transformation of snow to ice, microwave remote sensing of ice, origins of ice stratification, controls on snowfall, monitoring of past storm tracks. Dr.Alley is a member of the Polar Research Board and a Fellow of the American Geophysical Union.

Jochem Marotzke is a Professor at the Southampton Oceanography Centre in the United Kingdom. His research interests are in large-scale ocean circulation and the role of the ocean in climate and abrupt climate change. He has worked on the stability of the ocean’s thermohaline circulation, large-scale ocean-atmosphere interactions, and model-data syntheses applied to the Atlantic and Indian oceans. He then focused on the fluid dynamics of the thermohaline circulation, especially the role of oceanic mixing. More recently, he has explored the interactions of the thermohaline circulation with sea ice and the ocean carbon cycle, and also the role of the thermohaline circulation for paleoclimates.

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