Broadband radiation methods to determine aerosol optical depth and the imaginary part of its index, and their applications

Jinhuan Qiu; Liquan Yang

doi:10.1117/12.467352

9 April 2003 Broadband radiation methods to determine aerosol optical depth and the imaginary part of its refractive index, and their applications

Jinhuan Qiu, Liquan Yang

Author Affiliations +

Proceedings Volume 4891, Optical Remote Sensing of the Atmosphere and Clouds III; (2003) https://doi.org/10.1117/12.467352
Event: Third International Asia-Pacific Environmental Remote Sensing Remote Sensing of the Atmosphere, Ocean, Environment, and Space, 2002, Hangzhou, China

Abstract

Two broadband radiation methods are developed to determine aerosol optical depth and the imaginary part of its refractive index. One is broadband extinction method to determine aerosol optical depth by using hourly/daily accumulated pyrheliometer data. Another is broadband solar radiation method to retrieve the aerosol imaginary part from joint pyrheliometer/paranometer data. Furthermore, aerosol optical depths over 11 meteorological observatories in China during 1980-2000, the aerosol imaginary parts and its single scattering albedoes in Beijing and Shenyang during 1993-2000 are retrieved from pyrheliometer/paranometer data by using the methods. Based on the retrieval results, the variation trends of the aerosol optical depths and its imaginary parts, the effects of Pinatubo eruption in 1991, sand-dust event and fossil fuel burning on them are empirically analyzed.

Citation Download Citation

Jinhuan Qiu and Liquan Yang "Broadband radiation methods to determine aerosol optical depth and the imaginary part of its refractive index, and their applications", Proc. SPIE 4891, Optical Remote Sensing of the Atmosphere and Clouds III, (9 April 2003); https://doi.org/10.1117/12.467352

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