atmospheric brown clouds over the Indian Ocean and South Asia. Dr. Ramanathan was inducted into the National Academy of Sciences in 2002 and is a fellow of the American Geophysical Union, the American Meteorological Society, and the American Association for the Advancement of Science. He earned his Ph.D. in planetary atmospheres from the State University of New York at Stony Brook. He has previously served on the NRC Board on Global Change and Climate Research Committee.

Dr. Lynn M. Russell is an associate professor in the Center for Atmospheric Sciences, Scripps Institution of Oceanography, University of California, San Diego. Her research is in the area of aerosol particle chemistry, including the behavior of particles under pristine and anthropogenically influenced conditions. Her research interests span experimental and modeling approaches to aerosol evolution in the atmosphere, incorporating chemical and physical mechanisms in aerosol-cloud interactions, organic aerosols, and their radiative effects. She has served on several NRC committees, including the Panel on Aerosol Radiative Forcing and Climate Change, the Committee to Review NARSTO’s Scientific Assessment of Airborne Particulate Matter, and the Panel on Atmospheric Effects of Aviation. She holds a Ph.D. in chemical engineering from the California Institute of Technology.

Dr. Amanda C. Staudt is a senior program officer with the Board on Atmospheric Sciences and Climate of the National Academies. She received an A.B. in environmental engineering and sciences and a Ph.D. in atmospheric sciences from Harvard University. Her doctorate research involved developing a global three-dimensional chemical transport model to investigate how long-range transport of continental pollutants affects the chemical composition of the remote tropical Pacific troposphere. Since joining the National Academies in 2001, Dr. Staudt has staffed the National Academies review of the U.S. Climate Change Science Program Strategic Plan and the long-standing Climate Research Committee. Dr. Staudt has also worked on studies addressing air quality management in the United States, research priorities for airborne particulate matter, the NARSTO Assessment of the Atmospheric Science on Particulate Matter, weather research for surface transportation, and weather forecasting for aviation traffic flow management.

Dr. Parikhit Sinha is a program officer with the Board on Atmospheric Sciences and Climate of the National Academies. He received an A.B. in environmental engineering and sciences from Harvard University and a