develop technologies for environmental assessment, prediction and control. Barros’s work is interdisciplinary and addresses fundamental engineering science questions in the areas of climate, hydrometeorology, geomorphology, ecology, hydraulics and hydrology, and their linkages to the environmental engineering sciences. Her research activities are conducted using computer models, signal processing and exploratory data analysis, and laboratory and field experiments. She previously served on the NRC Committee on U.S. Geological Survey (USGS) Water Resources Research, 1997–2000.

V. Chandrasekar is a professor in the Electrical Engineering Department at Colorado State University (CSU), where he received his Ph.D. Dr. Chandrasekar has been involved with weather radar systems for more than 20 years and has about 25 years of experience in radar systems. Dr. Chandrasekar has played a key role in developing the CSU-CHILL radar as one of the most advanced meteorological radar systems available for research, and he continues to work actively with the CSU-CHILL radar supporting its research and education mission. He specializes in developing new radar technologies and techniques for solving meteorological problems and has actively pursued applications of polarimetry for cloud microphysical applications, as well as neural network-based radar rainfall estimates and fuzzy logic systems for hydrometeor identification. Dr. Chandrasekar is an avid experimentalist conducting experiments to collect in situ observations to verify the new techniques and technologies. He is coauthor of two textbooks, Polarimetric Doppler Weather Radar: Principles and Applications (Cambridge University Press, 2001) and Introduction to Probability and Random Processes (McGraw Hill, 1997). He is a fellow of the IEEE and recipient of the National Aeronautics and Space Administration (NASA) technical achievement award.

Gregory S. Forbes earned a Ph.D. from the University of Chicago where he studied tornadoes and severe thunderstorms under Dr. Theodore Fujita—world famous for his invention of the F-scale used to rate tornadoes. From 1978 to 1999, Forbes was a member of the meteorology faculty at Pennsylvania State University and taught courses in weather analysis, forecasting, hydrometeorology, and natural disasters. He has been involved in numerous field measurement programs that included Doppler radars and was lead forecaster for some of these projects. Forbes has used NEXRAD, research multiparameter, and phased-array radar data to evaluate various weather situations. In June 1999, he joined the operational forecasting team at the Weather Channel as its severe weather expert. Forbes is a fellow of the AMS