CIRES and CIESRDS Director, Professor of Geography
- Ph.D., University of Colorado, 1996
My research interests are in the use of satellite and airborne remote sensing techniques, integrated with in situ observations and modeling, to understand how and why the Earth's ice cover is changing, and what those changes mean for life on Earth. In particular, my research focuses on the contributions of ice sheets and high-latitude glaciers to sea level rise and their relationship to the changing climate. In addition, I focus on improving the ways in which sea level rise information is packaged and presented in ways that can maximize its use by and policy-makers
Using satellites and in situ measurements to study polar ice, my group works with space-based, airborne, and in situ observations to study changes in Earth’s glaciers and ice sheets, with a focus on understanding the characteristics of the seas surrounding Greenland and how their interactions with the outlet glaciers that drain the ice sheet impact the ways in which the sea/ice exchanges affect the discharge of ice from the ice sheets. The melting and retreat of floating ice (ice tongues) at the glacier fronts comprise the greatest uncertainty in determining how much and how fast the Greenland ice sheet will contribute to sea level rise. Understanding the thermodynamic and dynamic processes where the ice meets the water is critical to reducing that uncertainty and developing more reliable forecasts. Satellite observations of temperature, combined with in situ observations of temperature, salinity, and circulation, as well as ocean modeling results provide the opportunity to gain new insights into the processes that occur at these critical interfaces.
Honors and Awards
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CECA connects and creates a supportive environment for graduate students and postdocs who come from various academic units to do research in CIRES.