Hannover 2010 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 2: Poster Session

UP 2.13: Poster

Dienstag, 9. März 2010, 16:30–18:30, Lichthof

Statistical Analysis of Aerosol Optical Thickness from Satellite Retrievals using BAER and AERONET over Several Regions — •jongmin yoon, wolfgang von hoyningen-huene, alexander a. kokhanovsky, marco vountas, and john p. burrows — IUP, University of Bremen, Bremen, Germany

Aerosol affecting radiative forcing still remains one of poorly understood problems in climate research. To understand its effect, many algorithms for aerosol remote sensing have been developed. This study helps to understand its effect using analysis of the long-term trends of aerosol optical thickness for several regions using BAER (Bremen AErosol Retrieval) algorithm with SeaWiFS (Sea-viewing Wide Field-of-view Sensor) L1b data. The BeNeLux, the Po Valley, the Eastern Europe, the Eastern Mediterranean, and the Pearl River Delta in South China are chosen as several regions for studies in CityZen project because they are densely-populated and mostly influenced by land aerosol sources (e.g. mineral dust, industrial pollutant, and biomass burning). From additional statistical analysis of spectral Aerosol Optical Thickness (AOT), Single Scattering Albedo (SSA), and phase function from AERONET level 2.0 (cloud-screened and quality-assured), we estimate more reliable long-term aerosol characteristics in this study. Most of European sites showed generally negative tendency (decreasing of AOT with time) due to the environmental regulation. On the other hand, the trend over Perl River Delta was obviously positive. This is due to the rapid economical development and massive industrial emission.