Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5611
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Title: Black carbon measurement in a coastal area of south China
Authors: Cheng, Y
Lee, SC 
Ho, KF
Wang, YQ
Cao, JJ
Chow, JC
Watson, JG
Issue Date: Jun-2006
Source: Journal of geophysical research. Atmospheres, June 2006, v. 111, no. D12, D12310, p.1-11
Abstract: To better understand anthropogenic pollution originating in Asia and its transport into the global atmosphere, black carbon (BC) emissions were measured continuously from June 2004 to May 2005 at Hok Tsui (22.13°N, 114.15°E). Hok Tsui is a continental outflow, downwind monitoring site, located in a coastal area near Hong Kong. Using an Aethalometer, hourly BC concentrations ranged from 63.0 ng/m³ to 17.3 μg/m³, showing a clear seasonal pattern with high concentrations in winter, spring, and fall and low values in summer. During the winter, high BC concentrations occurred frequently as a result of southward long-range transport of polluted air masses in the boundary layer over the Asian continent. Anthropogenic emissions in coastal areas of southeastern China were the major potential sources for the observed pollutants. During the summer, high BC concentrations were measured occasionally when the air masses came from the northwest. These anthropogenic pollutants were found to be regional in nature, originating from sources in the Pearl River Delta (PRD) region, which included emissions from residential and agricultural combustion, industry, power plants, motor vehicles, and ships.
Keywords: Air mass
Atmospheric pollution
Black carbon
Carbon emission
Measurement method
Pollutant transport
Publisher: Wiley-Blackwell
Journal: Journal of geophysical research. Atmospheres 
ISSN: 2169-897X
EISSN: 2169-8996
DOI: 10.1029/2005JD006663
Rights: Copyright 2006 by the American Geophysical Union
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