干旱区生态环境知识资源中心(Arid): Characteristics of atmospheric boundary layer and its relation with PM2.5 during winter in Shihezi, an Oasis city in Northwest China

Arid

DOI	10.1016/j.apr.2023.101902
	Characteristics of atmospheric boundary layer and its relation with PM2.5 during winter in Shihezi, an Oasis city in Northwest China
	Li, Shuting; Li, Xia; Deng, Zhaoze; Xia, Xiangao; Ren, Gang; An, Dongliang; Ayikan, Maulen; Zhong, Yuting
通讯作者	Li, X
来源期刊	ATMOSPHERIC POLLUTION RESEARCH
ISSN	1309-1042
出版年	2023
卷号	14 期号:11
英文摘要	Based on low-level atmospheric meteorological elemental and pollutant data in the vertical direction observed during a tethered sonde sounding experiment from December 27, 2019 to January 14, 2020 this study analysed the atmospheric boundary layer vertical structure and its influence on winter PM2.5 concentrations in Shihezi City, Xinjiang, using Richardson number (Ri) profiling and correlation analysis to better understand the correlation between the atmospheric boundary layer structure and continuous heavy pollution in Shihezi City during winter. The results showed that heavy pollution continued during the observational period, and the diurnal variation in the atmospheric boundary layer disappeared. The atmospheric boundary layer structure tended to remain stable, and the average boundary layer height was only 109 m. The lengthy temperature inversion lifespan, high humidity, and low-wind layer near the surface primarily contributed to the sustained heavy pollution during winter in Shihezi City. Temperature and wind speed during heavy pollution events were negatively correlated with the PM2.5 concentrations in the near-surface layer. Stable atmospheric thermodynamic stratification with a cold lower layer and a warm upper layer in the atmospheric boundary layer weakens vertical atmospheric pollutant diffusion. Moreover, increased relative humidity (RH) is beneficial for hygroscopic aerosol particle growth and liquid-phase chemical reactions, thus worsening heavy pollution.
英文关键词	Tethered sonde Boundary layer structure Heavy pollution PM2.5 Shihezi city
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001066092800001
WOS关键词	BLACK CARBON ; LOWER TROPOSPHERE ; POLLUTION ; OZONE ; HEIGHT ; IMPACT ; PROFILES ; SHANGHAI ; AEROSOLS ; TIANJIN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395503
推荐引用方式 GB/T 7714	Li, Shuting,Li, Xia,Deng, Zhaoze,et al. Characteristics of atmospheric boundary layer and its relation with PM2.5 during winter in Shihezi, an Oasis city in Northwest China[J],2023,14(11).
APA	Li, Shuting.,Li, Xia.,Deng, Zhaoze.,Xia, Xiangao.,Ren, Gang.,...&Zhong, Yuting.(2023).Characteristics of atmospheric boundary layer and its relation with PM2.5 during winter in Shihezi, an Oasis city in Northwest China.ATMOSPHERIC POLLUTION RESEARCH,14(11).
MLA	Li, Shuting,et al."Characteristics of atmospheric boundary layer and its relation with PM2.5 during winter in Shihezi, an Oasis city in Northwest China".ATMOSPHERIC POLLUTION RESEARCH 14.11(2023).