Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31898
Title: Identification of sources of PM10 aerosols in Hong Kong by wind trajectory analysis
Authors: Man, CK
Shih, MY
Keywords: Back trajectories
Light absorption
Light scattering
PM10 aerosol
Issue Date: 2001
Publisher: Pergamon Press
Source: Journal of aerosol science, 2001, v. 32, no. 10, p. 1213-1223 How to cite?
Journal: Journal of aerosol science 
Abstract: Light scattering and absorption coefficients were measured from September 1997 to April 1999 at a station at Cape D'Aguilar, a remote area at the southeastern tip of Hong Kong. The sum of the coefficients was converted to particulate mass concentration of aerosols and compared with those measured at other urban stations. Using back trajectories, the air masses arriving Hong Kong can be classified into seven types. Air masses originating in the Asian continent generally brought in higher aerosol concentrations than those from the ocean. The South Marine Circulation type trajectories (SMC) brought in the lowest aerosol mass concentration of about 10 μg m-3 measured at the Cape D'Aguilar station. This can be used as the value for background mass concentration in the Hong Kong region. Based on measurements at stations located at different parts in the territory the sources of aerosols in Hong Kong were speculated to be mainly due to emissions from the Asian continent and local sources in winter. Local emissions were thought to be mainly responsible for the aerosol concentrations in summer.
URI: http://hdl.handle.net/10397/31898
ISSN: 0021-8502
EISSN: 1879-1964
DOI: 10.1016/S0021-8502(01)00052-0
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