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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 27 — Sep. 20, 2008
  • pp: 4945–4951

Characteristics of aerosol optical properties in pollution and Asian dust episodes over Beijing, China

Chenbo Xie, Tomoki Nishizawa, Nobuo Sugimoto, Ichiro Matsui, and Zifa Wang  »View Author Affiliations


Applied Optics, Vol. 47, Issue 27, pp. 4945-4951 (2008)
http://dx.doi.org/10.1364/AO.47.004945


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Abstract

Aerosol optical properties were continuously measured with the National Institute for Environmental Studies (NIES) compact Raman lidar over Beijing, China, from 15 to 31 December 2007. The results indicated that in a moderate pollution episode, the averaged aerosol extinction below 1 km height was 0.39 ± 0.15 km 1 and the lidar ratio was 60.8 ± 13.5 sr ; in heavy pollution episode, they were 1.97 ± 0.91 km 1 and 43.7 ± 8.3 sr ; in an Asian dust episode, they were 0.33 ± 0.11 km 1 and 38.3 ± 9.8 sr . The total depolarization ratio was mostly below 10% in the pollution episode, whereas it was larger than 20% in the Asian dust episode. The distinct characteristics of aerosol optical properties in moderate and heavy pollution episodes were attributed to the difference in air mass trajectory and the ambient atmospheric conditions such as relative humidity.

© 2008 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.3640) Atmospheric and oceanic optics : Lidar
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.3640) Remote sensing and sensors : Lidar

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: April 4, 2008
Revised Manuscript: August 4, 2008
Manuscript Accepted: August 12, 2008
Published: September 17, 2008

Citation
Chenbo Xie, Tomoki Nishizawa, Nobuo Sugimoto, Ichiro Matsui, and Zifa Wang, "Characteristics of aerosol optical properties in pollution and Asian dust episodes over Beijing, China," Appl. Opt. 47, 4945-4951 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-27-4945

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