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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 9, issue 4
Atmos. Meas. Tech., 9, 1925–1937, 2016
https://doi.org/10.5194/amt-9-1925-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Meas. Tech., 9, 1925–1937, 2016
https://doi.org/10.5194/amt-9-1925-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 29 Apr 2016

Research article | 29 Apr 2016

A new method for estimating aerosol mass flux in the urban surface layer using LAS technology

Renmin Yuan1, Tao Luo1, Jianning Sun2, Hao Liu1, Yunfei Fu1, and Zhien Wang3 Renmin Yuan et al.
  • 1School of Earth and Space Sciences, University of Science and Technology of China, Anhui, 230026, China
  • 2School of Atmospheric Sciences, Nanjing University, Jiangsu, 210023, China
  • 3Department of Atmospheric Science, University of Wyoming, Laramie, Wyoming, WY 82070, USA

Abstract. Atmospheric aerosol greatly influences human health and the natural environment, as well as the weather and climate system. Therefore, atmospheric aerosol has attracted significant attention from society. Despite consistent research efforts, there are still uncertainties in understanding its effects due to poor knowledge about aerosol vertical transport caused by the limited measurement capabilities of aerosol mass vertical transport flux. In this paper, a new method for measuring atmospheric aerosol vertical transport flux is developed based on the similarity theory of surface layer, the theory of light propagation in a turbulent atmosphere, and the observations and studies of the atmospheric equivalent refractive index (AERI). The results show that aerosol mass flux can be linked to the real and imaginary parts of the atmospheric equivalent refractive index structure parameter (AERISP) and the ratio of aerosol mass concentration to the imaginary part of the AERI. The real and imaginary parts of the AERISP can be measured based on the light-propagation theory. The ratio of the aerosol mass concentration to the imaginary part of the AERI can be measured based on the measurements of aerosol mass concentration and visibility. The observational results show that aerosol vertical transport flux varies diurnally and is related to the aerosol spatial distribution. The maximum aerosol flux during the experimental period in Hefei City was 0.017 mg m−2 s−1, and the mean value was 0.004 mg m−2 s−1. The new method offers an effective way to study aerosol vertical transport in complex environments.

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Atmospheric aerosol has a great influence on the natural environment. Despite consistent research efforts, there are still uncertainties in our understanding of its effects due to poor knowledge of aerosol vertical transport. In this paper, a new method for measuring atmospheric aerosol mass vertical transport flux is developed based on the similarity theory, the theory of light propagation, and the observations and studies of the atmospheric equivalent refractive index.
Atmospheric aerosol has a great influence on the natural environment. Despite consistent...
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