Comparison of aerosol characteristics during haze periods over two urban agglomerations in China using CALIPSO observations--颗粒学报PARTICUOLOGY

Liu, Q., Ma, X., Yu, Y., Qin, Y., Chen, Y., Kang, Y., . . . Tang, Y. (2017). Comparison of aerosol characteristics during haze periods over two urban agglomerations in China using CALIPSO observations. Particuology, 33, 63-72. https://doi.org/10.1016/j.partic.2017.02.001

Comparison of aerosol characteristics during haze periods over two urban agglomerations in China using CALIPSO observations

Qiong Liu ^{a b}, Xiaojun Ma ^a, Yanrong Yu ^{a c}, Yan Qin ^a, Yonghang Chen ^{a d *}, Yanming Kang ^a, Hua Zhang ^e, Tiantao Cheng ^b, Yan Ling ^a, Yujie Tang ^a

a College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
b Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
c College of Physics and Electrical Information Engineering, Ningxia University, Yinchuan 750021, China
d Institute of Desert Meteorology, China Meteorology Administration, Urumqi 830002, China
e National Climate Center, China Meteorology Administration, Beijing 100081, China

10.1016/j.partic.2017.02.001

Volume 33, August 2017, Pages 63-72

Received 7 January 2016, Revised 15 February 2017, Accepted 22 February 2017, Available online 5 May 2017, Version of Record 13 June 2017.

E-mail: yonghangchen@dhu.edu.cn

Highlights

• Aerosol characteristics in two metropolitan regions in China were compared.

• Aerosols were larger in the Beijing–Tianjin–Hebei metropolitan region.

• Aerosols were more regular in the Yangtze River Delta.

Abstract

Using CALIPSO (cloud-aerosol lidar and infrared pathfinder satellite observation) vertical observation data during haze periods from January 2007 to December 2008, we analyzed differences in aerosol characteristics near the surface, as well as in the middle troposphere between the Beijing–Tianjin–Hebei metropolitan region (Area A) and the Yangtze River Delta region (Area B) in China. One significant difference was that haze pollution in Area A was related to local and non-local aerosols, while in Area B it was related to local anthropogenic sources. In all seasons apart from autumn, aerosol pollution in Area A was more severe than in Area B, both near the surface and at higher altitudes. In Area A, non-spherical aerosols were dominant from 0 to 4 km in spring, summer, and winter; while in autumn, there were considerably high numbers of non-spherical aerosols below 0.5 km, and near-spherical aerosols from 0.5 to 4 km. In Area B, both near-spherical and non-spherical aerosols were common in all seasons. Moreover, aerosols with attenuated color ratios of 0–0.2 were more common in all seasons in Area A than in Area B, indicating that fine particle pollution in Area A was more serious than in Area B. Finally, relatively large aerosols linked to gravity settling appeared more frequently near the surface in Area A than in Area B.

Graphical abstract

Keywords

CALIPSO; Aerosols; Haze; Vertical distribution; Seasonal variation; Urban agglomerations

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