Comparison of chemical composition parameterization with optical retrieval for determining aerosol apparent refractive index

Fang Li; S. Nyeki; U. Baltensperger

doi:10.1117/12.317723

18 August 1998 Comparison of chemical composition parameterization with optical retrieval for determining aerosol apparent refractive index

Fang Li, S. Nyeki, U. Baltensperger

Author Affiliations +

Proceedings Volume 3501, Optical Remote Sensing of the Atmosphere and Clouds; (1998) https://doi.org/10.1117/12.317723
Event: Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 1998, Beijing, China

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.

Citation Download Citation

Fang Li, S. Nyeki, and U. Baltensperger "Comparison of chemical composition parameterization with optical retrieval for determining aerosol apparent refractive index", Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); https://doi.org/10.1117/12.317723

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