HR: 11:35h
AN: A42A-06    [Abstracts]
TI: Trace Gas Measurements made from Aircraft over North America and China
AU: * Dickerson, R R
EM: russ@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Marufu, L T
EM: marufu@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Hains, J
EM: jennifer@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Taubman, B
EM: btaubman@wam.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Stehr, J
EM: stehr@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Li, Z
EM: zli@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Li, C
EM: canli@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Doddridge, B G
EM: bruce@atmos.umd.edu
AF: Department of Atmospheric and Oceaic Science, The University of Maryland, College Park, MD 20742 United States
AU: Doddridge, B G
EM: bruce@atmos.umd.edu
AF: NASA Headquarters, Mail Suite 5h79, Washington, DC 20546 United States
AB: Trace gases O3, CO, SO2, and aerosol optical properties were measured from a small research aircraft for ten summers over the Mid Atlantic region of the United States. The resultant profiles from the surface to about 3000 m altitude have been analyzed to show the role of long-range transport, boundary layer dynamics, convection, and emissions on concentrations and trends. Large, coal-fired power plants in the Ohio River Valley dominate O3 and SO2 concentrations under anti-cyclonic flow, but the contribution from these electricity generating units appears to have decreased over the past three years and pollutant concentrations have fallen, even when interannual variations in meteorology are removed. The same small aircraft package was flown over NE China last spring, and results are contrasted with those from North America.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005