Enhanced haze pollution by black carbon in megacities in China

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Ding , A J , Huang , X , Nie , W , Sun , J N , Kerminen , V -M , Petäjä , T , Su , H , Cheng , Y F , Yang , X -Q , Wang , M H , Chi , X G , Wang , J P , Virkkula , A , Guo , W D , Yuan , J , Wang , S Y , Zhang , R J , Wu , Y F , Song , Y , Zhu , T , Zilitinkevich , S , Kulmala , M & Fu , C B 2016 , ' Enhanced haze pollution by black carbon in megacities in China ' , Geophysical Research Letters , vol. 43 , no. 6 , pp. 2873-2879 . https://doi.org/10.1002/2016GL067745

Title: Enhanced haze pollution by black carbon in megacities in China
Author: Ding, A. J.; Huang, X.; Nie, W.; Sun, J. N.; Kerminen, V. -M.; Petäjä, T.; Su, H.; Cheng, Y. F.; Yang, X. -Q.; Wang, M. H.; Chi, X. G.; Wang, J. P.; Virkkula, A.; Guo, W. D.; Yuan, J.; Wang, S. Y.; Zhang, R. J.; Wu, Y. F.; Song, Y.; Zhu, T.; Zilitinkevich, S.; Kulmala, M.; Fu, C. B.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2016-03-28
Language: eng
Number of pages: 7
Belongs to series: Geophysical Research Letters
ISSN: 0094-8276
URI: http://hdl.handle.net/10138/209579
Abstract: Aerosol-planetary boundary layer (PBL) interactions have been found to enhance air pollution in megacities in China. We show that black carbon (BC) aerosols play the key role in modifying the PBL meteorology and hence enhancing the haze pollution. With model simulations and data analysis from various field observations in December 2013, we demonstrate that BC induces heating in the PBL, particularly in the upper PBL, and the resulting decreased surface heat flux substantially depresses the development of PBL and consequently enhances the occurrences of extreme haze pollution episodes. We define this process as the dome effect of BC and suggest an urgent need for reducing BC emissions as an efficient way to mitigate the extreme haze pollution in megacities of China.
Subject: planetary boundary layer
feedback
radiative forcing
air pollution
EASTERN CHINA
SYNOPTIC WEATHER
AIR-POLLUTION
MIXING STATE
JANUARY 2013
AEROSOLS
IMPACT
ABSORPTION
EVENTS
LAYER
114 Physical sciences
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