Revolutionary Technology Program and on the Steering Committee, Space Applications and Commercialization. He is currently a member of the Ocean Studies Board.

JAMES F.W. PURDOM is a senior research scientist at the Cooperative Institute for Research in the Atmosphere (CIRA) at Colorado State University. Before joining CIRA in 2001, he spent 4 years as director of the Office of Research and Applications in NOAA-NESDIS. Dr. Purdom’s research focuses on remote sensing of Earth and its environment from space, as well as the development and evolution of atmospheric convection, with emphasis on the study of mesoscale processes using satellite data. He received the U.S. Department of Commerce Silver Medal in 1994, the National Weather Association Special Award in 1996, the American Meteorological Society Special Award in 1997, and the Presidential Rank Award in 2001. He served on the NRC Task Group on the Availability and Usefulness of NASA’s Space Mission Data.

CHRISTOPHER S. VELDEN is currently a research scientist at the University of Wisconsin. He heads a small group that develops satellite products mainly for tropical cyclone applications. He served as a member of the U.S. Weather Research Project Science Steering Committee (1996-1999), the GOES Science Team (1996-1998), and the Geostationary Microwave Sounder Working Group (1995-1996). He served as chair of the AMS Committee on Satellite Meteorology and has also been a member of the AMS Tropical Committee. In the last 5 years he has been honored by AMS with two awards, and he has published numerous papers. He served on the NRC Committee on NOAA-NESDIS Transition from Research to Operations, the Committee on the Future of the Tropical Rainfall Measuring Mission, and the Panel on Weather of the Committee on Earth Science and Applications from Space: A Community Assessment and Strategy for the Future.

THOMAS H. VONDER HAAR is the director of the Cooperative Institute for Research in the Atmosphere and University Distinguished Professor of Atmospheric Science at Colorado State University. His research includes work on Earth’s radiation budget and fundamental relationships with the climate system and incorporates some of the first results of direct solar irradiance measurements from satellites and the exchange of energy between Earth and space. Dr. Vonder Haar is also director of the Center for Geosciences, a Department of Defense-sponsored research center that focuses on the study of weather patterns and how they affect military operations, and includes investigations of fog, cloud layering, cloud drift winds, and dynamics of cloud persistence as detected from satellites. He currently serves on the NRC Board on Atmospheric Sciences and Climate and was the vice chair of the Panel on Weather of the Committee on Earth Science and Applications from Space: A Community Assessment and Strategy for the Future. He was elected to the National Academy of Engineering in 2003.

FRANK J. WENTZ serves as director of Remote Sensing Systems, a research company specializing in satellite microwave remote sensing of Earth. His research focuses on radiative transfer models that relate satellite observations to geophysical parameters, with the objective of providing reliable geophysical data sets to the Earth science community. He is currently working on satellite-derived decadal time series of atmospheric moisture and temperature, the measurement of sea surface temperature through clouds, and advanced microwave sensor designs for climatological studies. He is a member of the American Geophysical Union. Mr. Wentz served on the NRC Panel on Reconciling Temperature Observations of the Climate Research Committee, and he was a member of the Committee on Earth Studies.

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