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Proceedings Paper

Comparison of chemical composition parameterization with optical retrieval for determining aerosol apparent refractive index
Author(s): Fang Li; S. Nyeki; U. Baltensperger
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Paper Abstract

Aerosol refractive index is an important parameter relating its chemical composition with optical properties. Contained within this paper is presentation of two approaches to estimate the aerosol apparent complex refractive index: one is the partial molar refraction approach (PMRA) based on aerosol chemical composition analysis, and another is the light extinction retrieval (LER) from the aerosol scattering and absorption properties. Both are applied to the field measurement data of a continuous experiment for three months at the Jungfraujoch high-alpine station. The three-month median of the real part of the refractive index from the PMRA is 1.52 +/- 0.04, and the imaginary part is 0.003 +/- 0.002. Comparison of the results from the PMRA with those from the LER is made for the simultaneous measurements. Consistence of them is within 5 percent for the real part of the refractive index, and within a factor of 2 for the imaginary part.

Paper Details

Date Published: 18 August 1998
PDF: 8 pages
Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); doi: 10.1117/12.317723
Show Author Affiliations
Fang Li, Institute of Atmospheric Physics (China)
S. Nyeki, Univ. of Essex and Paul Scherrer Institute (United Kingdom)
U. Baltensperger, Paul Scherrer Institute (Switzerland)


Published in SPIE Proceedings Vol. 3501:
Optical Remote Sensing of the Atmosphere and Clouds
Jinxue Wang; Beiying Wu; Toshihiro Ogawa; Zheng-hua Guan, Editor(s)

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