气候变化领域集成服务门户(CCPortal): The vertical profiles of carbonaceous aerosols and key influencing factors during wintertime over western Sichuan Basin, China

CCPortal

DOI	10.1016/j.atmosenv.2020.117269
	The vertical profiles of carbonaceous aerosols and key influencing factors during wintertime over western Sichuan Basin, China
	Yin D.; Zhao S.; Qu J.; Yu Y.; Kang S.; Ren X.; Zhang J.; Zou Y.; Dong L.; Li J.; He J.; Li P.; Qin D.
发表日期	2020
ISSN	1352-2310
卷号	223
英文摘要	With Tibetan Plateau higher than 4 km to the west, the location of Sichuan Basin is unique all around the world and provides a good platform to study air pollution in the urban agglomerations over the complex terrain. To fill in the blanks on vertical distributions of PM1 (the particles smaller than 1 μm) and carbonaceous aerosols within the basin, by means of high topographic relief, PM1 were off-line sampled during 20 January to 2 February 2018 at eight sites with increasing altitudes from the basin to southeastern margins of the Tibetan Plateau. The regional potential sources for each site were revealed by HYbrid-Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and concentration-weighted trajectory (CWT) method. The lowest carbonaceous aerosol levels occurred at Lixian, while the highest OC (organic carbon) (EC, elemental carbon) was at Hongyuan (the altitude of 3500 m) (Ande, a rural site) due to more primary emissions. The pollutants inside the basin can be transported the altitudes from 2 km to 3 km by vertical dispersion, but they cannot be dispersed to higher altitudes. The vertical stratification of the pollutants was obvious and easily formed “high-low-high” pattern from Sichuan Basin to southeastern Tibetan Plateau, especially during highly polluted episodes. The regional potential sources significantly varied as the increased altitudes. Regional pollution was significant inside the basin. The sources at the altitudes from 2 km to 3 km originated from southeastern margins of the Plateau and surrounding cities, while those at higher altitudes were transported from southeastern margins of the Plateau. The impact of basic meteorological variables (temperature, wind speed and vapor pressure) on carbonaceous aerosols was opposite between the basin and Plateau sites. This study was essential to understanding formation mechanisms of severe pollution episodes and thus to making control measures for the urban agglomerations inside the mountainous terrain. © 2020 Elsevier Ltd
关键词	Carbonaceous aerosols HYSPLIT Sichuan basin Tibetan plateau Vertical profiles
语种	英语
scopus关键词	Agglomeration; Lithium compounds; Organic carbon; Pollution control; Wind; Carbonaceous aerosol; HYSPLIT; Sichuan Basin; Tibetan Plateau; Vertical profile; Aerosols; carbon; organic carbon; aerosol; agglomeration; atmospheric pollution; concentration (composition); emission; numerical model; trajectory; vertical distribution; vertical profile; wind velocity; aerosol; air pollution; air quality; air temperature; altitude; Article; dispersion; humidity; k means clustering; meteorology; particulate matter; persistent organic pollutant; priority journal; vapor pressure; winter; China; Qinghai-Xizang Plateau; Sichuan Basin
来源期刊	ATMOSPHERIC ENVIRONMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249361
作者单位	Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; CAS Centre for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China; Maerkang Meteorological Bureau, Maerkang, 624000, China; Lixian Meteorological Bureau, Lixian, 624000, China; State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, 100081, China
推荐引用方式 GB/T 7714	Yin D.,Zhao S.,Qu J.,et al. The vertical profiles of carbonaceous aerosols and key influencing factors during wintertime over western Sichuan Basin, China[J]. 中国科学院西北生态环境资源研究院,2020,223.
APA	Yin D..,Zhao S..,Qu J..,Yu Y..,Kang S..,...&Qin D..(2020).The vertical profiles of carbonaceous aerosols and key influencing factors during wintertime over western Sichuan Basin, China.ATMOSPHERIC ENVIRONMENT,223.
MLA	Yin D.,et al."The vertical profiles of carbonaceous aerosols and key influencing factors during wintertime over western Sichuan Basin, China".ATMOSPHERIC ENVIRONMENT 223(2020).