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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/amt-2018-399
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-2018-399
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 27 Nov 2018

Research article | 27 Nov 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).

Method to measure the size-resolved real part of aerosol refractive index

Gang Zhao, Chunsheng Zhao, and Weilun Zhao Gang Zhao et al.
  • Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China

Abstract. Knowledge on the refractive index of ambient aerosol can help reduce the uncertainties in estimating aerosol radiative forcing. A new method is proposed to retrieve the size-resolved real part of RI (RRI). Main principle of deriving the RRI is measuring the scattering intensity by single particle soot photometer of size-selected aerosol. This method is validated by a series of calibration experiments using the components of known RI. The retrieved size-resolved RRI cover a wide range from 200nm to 450nm with uncertainty less than 0.02. Measurements of the size resolved real part of the aerosol refractive index can improve the understanding of the aerosol radiative effects.

Gang Zhao et al.
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Short summary
A new method is proposed to retrieve the size-resolved real part of RI (RRI). The main principle of deriving the RRI is measuring the scattering intensity by single particle soot photometer of size-selected aerosol. This method is validated by a series of calibration experiments using the components of known RI. The retrieved size-resolved RRI cover a wide range from 200nm to 450nm with uncertainty less than 0.02.
A new method is proposed to retrieve the size-resolved real part of RI (RRI). The main principle...
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