HR: 09:45h
AN: A51A-08    [PDF]
TI: Studies of Tampa Bay Region Power Plant Plumes during the Bay Region Atmospheric Chemistry Experiment (BRACE)
AU: * Watson, T B
EM: tom.watson@noaa.gov
AF: NOAA Air Resources Laboratory/Field Research Division, 1750 Foote Drive, Idaho Falls, ID 83402 United States
AU: Luke, W T
EM: winston.luke@noaa.gov
AF: NOAA Air Resources Laboratory, 1315 East-West Highway, Silver Spring, MD 20910 United States
AU: Arnold, J R
EM: Arnold.Jeff@epamail.epa.gov
AF: NOAA/ARL Atmospheric Sciences Modeling Division on assignment to USEPA/ORD-NERL, 1200 6th Avenue 9th FL FL / OEA-095, Seattle, WA 98101 United States
AU: Gunter, L R
EM: laureen.gunter@noaa.gov
AF: NOAA Air Resopurces Laboratory/ Atmospheric Turbulance and Diffusion Division, PO Box 2456, Oak Ridge, TN 37831 United States
AB: The NOAA Air Resources Laboratory made aircraft measurements of chemical and meteorological parameters during 21 flights of the NOAA Twin Otter as part of the Bay Region Atmospheric Chemistry Experiment (BRACE). BRACE was conducted in May 2002. The aircraft flew horizontal transects upwind and downwind of the urban area on 13 of these flights to characterize the urban and power plant plumes. Vertical profiles from 60 to 3000 m MSL were made on most flights. Profiles were made over the Gulf of Mexico, Tampa Bay, and various land sites. On many flights, transects were located immediately downwind of the urban region and power plants and at successive distances farther downwind to characterize the horizontal distribution and chemical processing of the plumes as they aged. At each distance, data was collected during multiple passes at different altitudes to characterize the vertical structure. Many of the downwind passes were flown over the Gulf where sources are limited and the plumes can be observed in relative isolation. The contribution of the power plant plumes are analyzed to determine changes in the vertical and horizontal distribution of the plumes; horizontal fluxes of NOx, NOy, and ozone; production of ozone; deposition rates; and changes on successive days of regional background and concentration maxima caused by the power plant emissions.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0317 Chemical kinetic and photochemical properties
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting