干旱区生态环境知识资源中心(Arid): Analysis of the Interactions between the 200 hPa Jet and Air Pollutants in the Near-Surface Layer over East Asia in Summer

Arid

DOI	10.3390/atmos12070886
	Analysis of the Interactions between the 200 hPa Jet and Air Pollutants in the Near-Surface Layer over East Asia in Summer
	Wei, Wen; Zhuang, Bingliang; Lin, Huijuan; Shu, Yu; Wang, Tijian; Chen, Huimin; Gao, Yiman
通讯作者	Zhuang, BL (corresponding author), Nanjing Univ, Sch Atmospher Sci, Nanjing 210023, Peoples R China. ; Shu, Y (corresponding author), Nanjing Meteorol Bur, Nanjing 210019, Peoples R China.
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2021
卷号	12 期号:7
英文摘要	The rapid economic development in East Asia has led to serious air pollution problems in the near-surface layer. Studies have shown that there is an interaction between air pollution and the East Asian upper-level jet, which is an important weather system controlling the climate in East Asia. Therefore, it is of great significance to study the relationship between the surface layer air pollutants and the upper-level jet stream in East Asia. Based on the daily wind and vertical velocity data provided by the National Centers for Environmental Prediction/National Center for Atmospheric Research as well as the surface pollutant and meteorological variable data provided by the Science Data Bank, we use statistical analysis methods to study the relationship between the East Asian upper-level jet and the high-concentration area of near-surface air pollutants in summer. Meanwhile, the mechanisms of the interaction are preliminarily discussed. The results show that the North China Plain and the Tarim Basin are the high-value areas of the particulate matter (PM) in summer during 2013-2018, and the ozone (O-3) concentration in the near-surface atmospheric layer in the North China Plain is also high. The average concentrations of the PM2.5, PM10 and O-3 in the North China Plain are 45.09, 70.28 and 131.27 mu g center dot m(-3), respectively, and the days with the concentration exceeding the standard reach 401, 461 and 488, respectively. During this period, there is an increasing trend in the O-3 concentration and a decreasing trend in the PM concentration. The average ratio of the PM2.5 to PM10 is approximately 0.65 with a decreasing trend. The air pollutant concentration in this region has a significant relationship with the location of the East Asian upper-level jet. The low wind speed at the surface level under the control of the upper-level jet is the main reason for the high pollutant concentration besides the pollutant emission. They relate to each other through the surface humidity and the meridional and zonal wind. Meanwhile, the concentrations of the PM2.5 and PM10 are high in the near-surface layer in the Tarim Basin, and the average concentrations are 45.19 and 49.08 mu g center dot m(-3), respectively. The days with the concentration exceeding the standard are 265 and 193, respectively. The interannual variation in the PM concentration shows an increasing trend first and then a decreasing trend. The average ratio of PM2.5 to PM10 in this region reaches approximately 0.9. The ratio reaches the highest in 2013 and 2014 and then decreases to and maintains at approximately 0.85. The concentration of air pollutants in the basin has a significant relationship with the intensity of the upper-level jet in East Asia. The weakening of the upper-level jet will lead to a decrease in the surface humidity in the northern part of the basin, an increase in the surface temperature in the western part of the basin and a decrease in the surface zonal wind in the eastern part of the basin, which will result in a higher PM concentration.
英文关键词	East Asian upper-level jet atmospheric particulate matter ozone surface meteorological variables statistical analysis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000675994400001
WOS关键词	DUST ; VARIABILITY ; TAKLIMAKAN ; RESPONSES ; EMISSION ; POSITION ; AEROSOLS ; STREAM ; DESERT ; CHINA
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362630
作者单位	[Wei, Wen; Zhuang, Bingliang; Lin, Huijuan; Wang, Tijian; Chen, Huimin; Gao, Yiman] Nanjing Univ, Sch Atmospher Sci, Nanjing 210023, Peoples R China; [Shu, Yu] Nanjing Meteorol Bur, Nanjing 210019, Peoples R China
推荐引用方式 GB/T 7714	Wei, Wen,Zhuang, Bingliang,Lin, Huijuan,et al. Analysis of the Interactions between the 200 hPa Jet and Air Pollutants in the Near-Surface Layer over East Asia in Summer[J]. 南京大学,2021,12(7).
APA	Wei, Wen.,Zhuang, Bingliang.,Lin, Huijuan.,Shu, Yu.,Wang, Tijian.,...&Gao, Yiman.(2021).Analysis of the Interactions between the 200 hPa Jet and Air Pollutants in the Near-Surface Layer over East Asia in Summer.ATMOSPHERE,12(7).
MLA	Wei, Wen,et al."Analysis of the Interactions between the 200 hPa Jet and Air Pollutants in the Near-Surface Layer over East Asia in Summer".ATMOSPHERE 12.7(2021).