Peter Pulsifer is a research scientist with the National Snow and Ice Data Center (NSIDC), University of Colorado at Boulder where he leads the Exchange for Local Observations and Knowledge of the Arctic project (ELOKA). His research addresses questions related to the use of geographic information with a particular focus on supporting interoperability: the ability of information systems to readily share information and/or operations. For more than a decade, Dr. Pulsifer has been active in the coordination of international polar data activities. He has done this through participation in the GEO Cold Regions Initiative, and a number of other initiatives. At present, he chairs the Arctic Data Committee and co-chairs the Arctic Data team of the U.S. Interagency Arctic Research Policy Committee.