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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 10 — Apr. 1, 2006
  • pp: 2295–2305

Particle extinction measured at ambient conditions with differential optical absorption spectroscopy. 2. Closure study

Thomas Müller, Detlef Müller, and René Dubois  »View Author Affiliations


Applied Optics, Vol. 45, Issue 10, pp. 2295-2305 (2006)
http://dx.doi.org/10.1364/AO.45.002295


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Abstract

Spectral particle extinction coefficients of atmospheric aerosols were measured with, to the best of our knowledge, a newly designed differential optical absorption spectroscopy (DOAS) instrument. A closure study was carried out on the basis of optical and microphysical aerosol properties obtained from nephelometer, particle soot∕absorption photometer, hygroscopic tandem differential mobility analyzer, twin differential mobility particle sizer, aerodynamic particle sizer, and Berner impactors. The data were collected at the urban site of Leipzig during a period of 10 days in March 2000. The performance test also includes a comparison of the optical properties measured with DOAS to particle optical properties calculated with a Mie-scattering code. The computations take into account dry and ambient particle conditions. Under dry particle conditions the linear regression and the correlation coefficient for particle extinction are 0.95 and 0.90, respectively. At ambient conditions these parameters are 0.89 and 0.97, respectively. An inversion algorithm was used to retrieve microphysical particle properties from the extinction coefficients measured with DOAS. We found excellent agreement within the retrieval uncertainties.

© 2006 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1100) Atmospheric and oceanic optics : Aerosol detection
(010.1120) Atmospheric and oceanic optics : Air pollution monitoring
(010.1320) Atmospheric and oceanic optics : Atmospheric transmittance

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: November 8, 2004
Revised Manuscript: April 7, 2005
Manuscript Accepted: April 15, 2005

Citation
Thomas Müller, Detlef Müller, and René Dubois, "Particle extinction measured at ambient conditions with differential optical absorption spectroscopy. 2. Closure study," Appl. Opt. 45, 2295-2305 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-10-2295

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