HR: 17:50h
AN: A54B-07    [Abstracts]
TI: Aerosol and its Radiative Impact on Surface Solar Radiation in China
AU: * Li, Z
EM: zli@atmos.umd.edu
AF: ESSIC University of Maryland, 2207 CSS Bldg, College Park, md 20742, United States
AB: As a fast developing country covering a large territory, China is experiencing rapid environmental changes. High concentrations of aerosols with diverse properties are emitted in the region, providing a unique opportunity for understanding the impact of environmental changes on climate. Until very recently, few observational studies were conducted in this important source regions. The East Asian Study of Tropospheric Aerosols: an International Regional Experiment (EAST-AIRE) attempts to characterize the physical, optical and chemical properties of the aerosols and their effects on climate over China. Some preliminary results will be presented using continuous high-quality measurements of aerosol, cloud and radiative quantities made at the EAST-AIRE baseline stations in northern and southern China. Both regions are often covered by a thick layer of haze (with a yearly mean aerosol optical depth 0.7-0.8) due primarily to anthropogenic emissions of moderately strong absorbing aerosols, leading exceptionally large aerosol radiative effect at the surface in broadband, PAR and ultraviolet radiation. The boundary atmosphere is thus heated dramatically during the daytime, which may affect atmospheric stability and cloud formation.
UR: http:www.atmos.umd.edu/~zli
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0315 Biosphere/atmosphere interactions (0426, 1610)
DE: 0321 Cloud/radiation interaction
DE: 0360 Radiation: transmission and scattering
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly