HR: 10:20h
AN: GC22A-01 INVITED     [Abstracts]
TI: East Asian Study of Tropospheric Aerosols: An International Regional Experiment (EAST-AIRE): Preliminary Results from 2005
AU: * Dickerson, R R
EM: russ@atmos.umd.edu
AF: Department of Atmospheric and Oceanic Science, The University of Maryland, College Park, MD 20742 United States
AU: Li, C
EM: canli@atmos.umd.edu
AF: Department of Atmospheric and Oceanic Science, The University of Maryland, College Park, MD 20742 United States
AU: Li, Z
EM: zli@atmos.umd.edu
AF: Department of Atmospheric and Oceanic 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 Oceanic Science, The University of Maryland, College Park, MD 20742 United States
AU: Stehr, J
EM: stehr@atmos.umd.edu
AF: Department of Atmospheric and Oceanic Science, The University of Maryland, College Park, MD 20742 United States
AU: Chen, H
EM: chb@mail.iap.ac.cn
AF: Institute for Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
AU: Wang, P
EM: Pcwang@mail.iap.ac.cn
AF: Institute for Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
AU: Wang, Y
EM: Ywang@mail.iap.ac.cn
AF: Institute for Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
AU: Wen, T
EM: zhwenxuer@yahoo.com.cn
AF: Institute for Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
AU: Xia, X
EM: Xia@mail.iap.ac.cn
AF: Institute for Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029 China
AB: In order to gain a basic knowledge of the characteristics of aerosols and gases and an understanding of their climatic effects, a team of scientists from the U.S. and China conducted major field campaigns on the ground and from the air in the spring of 2005, and in addition established long-term and nation-wide observation facilities. Research flights on a small, instrumented aircraft investigated the role of meteorology in lofting pollutants and mineral dust and in large-scale impacts. Ahead of fronts, transport along warm conveyor belts and in convection, often dry convection, lifted trace gases and aerosols to altitudes where stronger winds and longer lifetimes transform these pollutants from local air quality problems to hemispheric atmospheric chemistry problems. Air behind cold fronts often contained high concentrations of mineral dust at altitudes of 3000 m or higher. At the central station in Xianghe (70 km east of Beijing), extensive measurements are made including 1) radiative quantities (direct, diffuse and total SW and LW fluxes) using broadband and narrow radiometers, and spectrometers; 2) cloud properties (cloud fraction and height, optical depth, liquid water path, particle size); 3) aerosol optical quantities (optical depth, scattering and absorbing coefficients, vertical attenuation profiles) using Cimel sun-photometer, Nephelometer, Aethalometers, PSAP; 4) aerosol physical quantities (size distribution, mass and condensation number) using aerosol filter samplers, cascade impactors, particle sizers; 5) aerosol compositions using OC/EC analyzer, aerosol filters and sample analyzers, 6) trace gases O3, NO, NOx, NOy, CO, SO2.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0330 Geochemical cycles (1030)
DE: 1610 Atmosphere (0315, 0325)
SC: Global Climate Change [GC]
MN: Fall Meeting 2005