ARB Research Seminar

This page updated June 19, 2013

Air Quality Measurements Over Lake Tahoe: Summer 2002 (Aircraft) and Winter 2003 (Boat)

Professor John J. Carroll and Professor Cort Anastasio, Department of Land, Air and Water Resources, University of California, Davis

May 26, 2004
Cal EPA Headquarters, 1001 "I" Street, Sacramento, CA

Research Project


During the summer and fall of 2002, aircraft measurements of meteorological and air quality variables were obtained over the western Sierra Nevada and the Lake Tahoe Basin. During the winter of 2003, similar measurements were made close to the lake's surface using a small research vessel on the lake. These data will support efforts by Research Division staff to better characterize atmospheric processes influencing the transport of pollutants into the Tahoe Basin and the deposition to Lake Tahoe of nutrients and particles of local, regional, and global origin. Biologically available forms of these pollutants are believed to deposit into the lake and act as nutrients for accelerated eutrophication of the lake. Furthermore, the deposition of inert atmospheric particles also reduces water clarity, which has declined about a foot per year in Lake Tahoe during the last three decades. In addition to summarizing the general conditions encountered, the investigators will describe the techniques used to acquire the data and to assure their quality.

Speaker Biography

Professor Emeritus John J. Carroll III and Professor Cort Anastasio were co-Principal Investigators on this project that used an airplane and boat to collect aerometric data on, above, and upwind of Lake Tahoe. Professor Carroll earned his Ph.D. in Meteorology at UCLA and Professor Anastasio earned his Ph.D. in Atmospheric Chemistry from Duke University. During his tenure at UC Davis, Professor Carroll has taught and mentored several of ARB's current employees. Dr. Carroll combined his interest in aviation with his interest in air pollution meteorology by instrumenting a Cessna 182 for measurement during several ARB air pollution field study campaigns. Dr. Anastasio is interested in tropospheric atmospheric chemistry, especially the chemical interaction of gases on particles.

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