气候变化领域集成服务门户(CCPortal): Haze events at different levels in winters: A comprehensive study of meteorological factors; Aerosol characteristics and direct radiative forcing in megacities of north and central China

CCPortal

DOI	10.1016/j.atmosenv.2020.118056
	Haze events at different levels in winters: A comprehensive study of meteorological factors; Aerosol characteristics and direct radiative forcing in megacities of north and central China
	Zhang M.; Jin S.; Ma Y.; Fan R.; Wang L.; Gong W.; Liu B.
发表日期	2021
ISSN	13522310
卷号	245
英文摘要	The changes in aerosol optical and microphysical properties, and sub-band shortwave direct radiative forcing (DARF) in Beijing and Wuhan were compared at different haze levels in winters. The occurrence of haze is found to be governed by the wind circulation and boundary layer in Beijing where the ground wind speed and the height of boundary layer decreased significantly with the development of haze. Compared with the boundary layer and wind, the relative humidity has a stronger impact on haze in Wuhan. Especially, hygroscopic growth of aerosol particles is observed in Wuhan. The increase of fine-mode non-absorbing particles is the main characteristic of aerosol change during haze periods. With the development of haze, the larger increase in DARF at the top of atmosphere is found in Beijing, while the change in DARF at the atmosphere is more obvious in Wuhan. Efficiency of the DARF shows that the change of DARF depends highly on the single scattering albedo in Beijing due to the obvious enhancement of particle scattering, while it depends much more on particle radius over Wuhan. The increase in particle size can also change DARF proportion of each sub-band in shortwave that the DARF proportion in ultraviolet and visible decreased. However, the DARF proportion in near-infrared increased during haze, as the light in shorter wavelength is more sensitive to the change of the fine particle radius. © 2020
英文关键词	Aerosols; Haze; Radiative effect; Shortwave
语种	英语
scopus关键词	Aerosols; Atmospheric radiation; Infrared devices; Particle size; Wind; Absorbing particles; Aerosol characteristics; Direct radiative forcing; Hygroscopic growth; Meteorological factors; Microphysical property; Particle scattering; Single scattering albedo; Boundary layers; aerosol; albedo; article; boundary layer; China; haze; humidity; infrared radiation; particle size; radiative forcing; ultraviolet radiation; wind speed; winter
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144771
作者单位	Hubei Key Laboratory of Critical Zone Evolution, School of Geography and Information Engineering, China University of Geosciences, Wuhan, 430074, China; School of Electronic Information, Wuhan University, Wuhan, Hubei Province 430079, China; State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei Province 430079, China; Collaborative Innovation Center for Geospatial Technology, Wuhan, 430079, China
推荐引用方式 GB/T 7714	Zhang M.,Jin S.,Ma Y.,et al. Haze events at different levels in winters: A comprehensive study of meteorological factors; Aerosol characteristics and direct radiative forcing in megacities of north and central China[J],2021,245.
APA	Zhang M..,Jin S..,Ma Y..,Fan R..,Wang L..,...&Liu B..(2021).Haze events at different levels in winters: A comprehensive study of meteorological factors; Aerosol characteristics and direct radiative forcing in megacities of north and central China.Atmospheric Environment,245.
MLA	Zhang M.,et al."Haze events at different levels in winters: A comprehensive study of meteorological factors; Aerosol characteristics and direct radiative forcing in megacities of north and central China".Atmospheric Environment 245(2021).