气候变化领域集成服务门户(CCPortal): The two-way feedback mechanism between unfavorable meteorological conditions and cumulative aerosol pollution in various haze regions of China

CCPortal

DOI	10.5194/acp-19-3287-2019
	The two-way feedback mechanism between unfavorable meteorological conditions and cumulative aerosol pollution in various haze regions of China
	Zhong J.; Zhang X.; Wang Y.; Wang J.; Shen X.; Zhang H.; Wang T.; Xie Z.; Liu C.; Zhang H.; Zhao T.; Sun J.; Fan S.; Gao Z.; Li Y.; Wang L.
发表日期	2019
ISSN	16807316
起始页码	3287
结束页码	3306
卷号	19 期号:5
英文摘要	Accompanied by unfavorable meteorological conditions with stable stratification in various haze regions of China, persistent heavy aerosol pollution episodes (HPEs) lasting more than 3 consecutive days frequently occur, particularly in winter. In the North China Plain (NCP), explosive growth of fine particulate matter smaller than 2.5 μ m in diameter (PM2.5), which occurs during some HPES, is dominated by a two-way feedback mechanism between more unfavorable meteorological conditions and cumulative aerosol pollution. However, the existence of a two-way feedback mechanism such as this in other key haze regions in China is uncertain; these regions include the Guanzhong Plain (GZP), the Yangtze River Delta (YRD) region, the Two Lakes Basin (TLB; a large outflow basin connected to Hubei Province and Hunan Province), the Pearl River Delta (PRD) region, the Sichuan Basin (SB), and the Northeast China Plain (NeCP). In this study, using surface PM 2.5 and radiation observations, radiosonde observations, and reanalysis data, we observed the existence of a two-way feedback mechanism in the six abovementioned regions. In the SB, this two-way feedback mechanism is weak due to the suppression of cloudy mid-upper layers. In the more polluted NCP, the GZP, and the NeCP, the feedback is more striking than that in the YRD, the TLB, and the PRD. In these regions, the feedback of worsened meteorological conditions on PM 2.5 explains 60 %-70 % of the increase in PM 2.5 during the cumulative stages (CSs). For each region, the low-level cooling bias becomes increasingly substantial with increasing aerosol pollution and a closer distance to the ground surface. With PM 2.5 mass concentrations greater than 400 μm-3, the near-ground bias exceeded -4 °C in Beijing and reached up to approximately -4 °C in Xi'an; this result was caused by accumulated aerosol mass to some extent. In addition to the increase in PM 2.5 caused by the two-way feedback, these regions also suffer from the regional transport of pollutants, including inter-regional transport in the GZP, trans-regional transport from the NCP to the YRD and the TLB, and southwesterly transport in the NeCP. © 2019 E-flow Copernicus GmbH.
语种	英语
scopus关键词	aerosol; atmospheric pollution; atmospheric transport; concentration (composition); feedback mechanism; haze; particulate matter; Beijing [Beijing (ADS)]; Beijing [China]; China; Guangdong; Guanzhong Plain; North China Plain; Shaanxi; Yangtze River; Zhujiang Basin
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144572
作者单位	Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, 100081, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Regional Atmospheric Environment, IUE, Chinese Academy of Sciences, Xiamen, 361021, China; Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100081, China; School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China; Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, China; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China; National Meteorological Center, China Meteorological Administration, Beijing, 100081, China; School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, 2100...
推荐引用方式 GB/T 7714	Zhong J.,Zhang X.,Wang Y.,et al. The two-way feedback mechanism between unfavorable meteorological conditions and cumulative aerosol pollution in various haze regions of China[J],2019,19(5).
APA	Zhong J..,Zhang X..,Wang Y..,Wang J..,Shen X..,...&Wang L..(2019).The two-way feedback mechanism between unfavorable meteorological conditions and cumulative aerosol pollution in various haze regions of China.Atmospheric Chemistry and Physics,19(5).
MLA	Zhong J.,et al."The two-way feedback mechanism between unfavorable meteorological conditions and cumulative aerosol pollution in various haze regions of China".Atmospheric Chemistry and Physics 19.5(2019).