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Proceedings Paper

Correlation between aerosol optical depth derived from CIMEL sunphotometer and surface particulate concentration in Northern and Southern Taiwan
Author(s): Chein-Jung Shiu; Yi-Wei Chen; Jen-Ping Chen; Shaw Chen Liu; Po-Hsiung Lin; Ho-Jiunm Lin; Wei-Nai Chen; Shih-Yu Chang; Anupam Hazra; Charles C. K. Chou; Shih-Chun Lung; Shih-Chieh Hsu
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Paper Abstract

Three years (2003-2005) of aerosol optical depths (AOD) measured with CIMEL sunphotometer were compared to the surface concentrations of PM10 and PM2.5 in Northern (i.e. Taipei) and Southern (i.e. Tainan) Taiwan. The correlation between AOD and PM10 is higher in Taipei than in Tainan. Additional chemical compositions of PM10 and PM2.5 in these two sites, including ionic component, sea salt, OC/EC and crustal components, were also examined to find their relationship with the AOD. These analyses indicate that aerosols in Taipei are mainly composed of fine aerosols, whereas in Tainan more crustal material and OC exist in the coarse mode, which partially explain the higher correlation of PM10 and AOD in Taipei. Closure calculations are carried out by combining data from lidar, sunphotometer, nephelometer, aethalomter, SMPS and APS size spectrometers, as well as chemical analyses of aerosols from PM10 and PM2.5 samplers and MOUDI impactor to investigate their consistency. The observed surface single scattering albedo was also compared to that retrieved by CIMEL sunphotometer, with additional discussion on the possible explanation to the discrepancies of the comparisons. Then, lidar measurement is applied to relate aerosols at the surface to those aloft.

Paper Details

Date Published: 1 September 2006
PDF: 10 pages
Proc. SPIE 6299, Remote Sensing of Aerosol and Chemical Gases, Model Simulation/Assimilation, and Applications to Air Quality, 62990T (1 September 2006); doi: 10.1117/12.677997
Show Author Affiliations
Chein-Jung Shiu, National Taiwan Univ. (Taiwan)
Yi-Wei Chen, National Taiwan Univ. (Taiwan)
Academia Sinica (Taiwan)
Jen-Ping Chen, National Taiwan Univ. (Taiwan)
Shaw Chen Liu, Academia Sinica (Taiwan)
Po-Hsiung Lin, National Taiwan Univ. (Taiwan)
Ho-Jiunm Lin, Academia Sinica (Taiwan)
Wei-Nai Chen, Academia Sinica (Taiwan)
Shih-Yu Chang, Academia Sinica (Taiwan)
Anupam Hazra, National Taiwan Univ. (Taiwan)
Charles C. K. Chou, Academia Sinica (Taiwan)
Shih-Chun Lung, Academia Sinica (Taiwan)
Shih-Chieh Hsu, Academia Sinica (Taiwan)

Published in SPIE Proceedings Vol. 6299:
Remote Sensing of Aerosol and Chemical Gases, Model Simulation/Assimilation, and Applications to Air Quality
Allen Chu; James Szykman; Shobha Kondragunta, Editor(s)

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