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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/acp-2017-1021
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
04 Jan 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).
Vertical distributions of aerosol optical properties during the spring 2016 ARIAs airborne campaign in the North China Plain
Fei Wang1,2, Zhanqing Li1,3, Xinrong Ren3,4,5, Qi Jiang6, Hao He3, Russell R. Dickerson3, Xiaobo Dong7, and Feng Lv7 1State Key Laboratory of Earth Surface Processes and Resource Ecology and College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
2Key Laboratory for Cloud Physics, Chinese Academy of Meteorological Sciences, Beijing, 100081, China
3Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD 20742, USA
4Air Resources Laboratory, National Oceanic and Atmospheric Administration, College Park, MD, USA
5Cooperative Institute for Climate and Satellites, University of Maryland, College Park, MD, USA
6National Meteorological Center, Beijing, 100081, China
7Hebei Provincial Weather Modification Office, Shijiazhuang, 050021, China
Abstract. Vertical distributions of aerosol optical properties derived from measurements made during 11 aircraft flights over the North China Plain (NCP) in May–June 2016 during the Air Chemistry Research In Asia (ARIAs) were analyzed. Aerosol optical data from in situ aircraft measurements shows good correlation with ground-based measurements. The regional variability of aerosol optical profiles such as aerosol scattering and backscattering, absorption, extinction, single scattering albedo (SSA), and the Ångström exponent (α) are for the first time thoroughly characterized over the NCP. The SSA at 550 nm showed a regional mean value of 0.85 ± 0.02 with moderate to strong absorption and the α ranged from 0.49 to 2.53 (median 1.53) indicating both mineral dust and accumulation mode aerosols. Most of the aerosol particles were located in the lowest 2 km of the atmosphere. We describe three typical planetary boundary layer (PBL) scenarios and associated transport pathways as well as the correlation between aerosol scattering coefficients and relative humidity (RH). Aerosol scattering coefficients decreased slowly with height in the clean PBL condition, but decreased sharply above the PBL under polluted conditions, which showed a strong correlation (R2 ≥ 0.78) with ambient RH. Back-trajectory analysis shows that clean air masses generally originated from the distant north-western part of China while most of the polluted air masses were from the heavily polluted interior and coastal areas near the campaign area.

Citation: Wang, F., Li, Z., Ren, X., Jiang, Q., He, H., Dickerson, R. R., Dong, X., and Lv, F.: Vertical distributions of aerosol optical properties during the spring 2016 ARIAs airborne campaign in the North China Plain, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-1021, in review, 2018.
Fei Wang et al.
Fei Wang et al.
Fei Wang et al.

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Short summary
The aerosol optical profiles are for the first time characterized over the North China Plain by aircraft measurement. Statistical summaries of the vertical distributions of aerosol optical properties focused on four target areas in the NCP region. We found 3 typical PBL structures and their aerosol scattering coefficients showed different correlation with ambient RH during the field campaign.
The aerosol optical profiles are for the first time characterized over the North China Plain by...
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