气候变化领域集成服务门户(CCPortal): Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017

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DOI	10.4209/aaqr.2018.10.0360
	Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017
	Chen, Pengfei; Kang, Shichang; Yang, Junhua; Pu, Tao; Li, Chaoliu; Guo, Junming; Tripathee, Lekhendra
发表日期	2019
ISSN	1680-8584
EISSN	2071-1409
卷号	19 期号:3
英文摘要	Long-term air quality data with high temporal and spatial resolutions are necessary to understand some processes influencing air quality and corresponding environmental and health effects. In this study, spatiotemporal variations of PM2.5, PM10, SO2, NO2, CO, and O-3 were investigated over a one-year period (June 2016-May 2017) at six sites of the Tibetan Plateau (TP). The annual mean concentrations of PM2.5 in all cities except Nagchu were below the Grade II standard (35 mu g m(-3)), and the values in Nagri and Nyingchi were even less than the Grade I standard (15 mu g m(-3)). PM10 concentrations showed similar distribution pattern with PM2.5. Evident seasonal variations of PM2.5, PM10, SO2, NO2, and CO concentrations were observed, with the highest seasonal average value being in winter followed by fall, spring, and summer, in descending order. By contrast, the 8-h O-3 concentration showed an opposite seasonal variation because the O-3 depended on lots of factors such as stratospheric incursions, weather conditions, and intensity of solar radiation. The diurnal trends of PM2.5, PM10, SO2, NO2, and CO concentrations in study region generally showed a flat "W" shape with two peaks occurring around noon (10:00-12:00) and midnight (21:00-23:00); these peaks were found to be affected by emission sources and weather conditions. However, the O-3 concentration trends did not significantly differ among the six regions, with the maximum concentration being in the afternoon. In sum, cities on the TP showed slightly higher pollution levels in regions affected by anthropogenic activities such as Lhasa and Nagchu, whereas other cities showed good air quality. Beside long-range transport pollutants from surrounding regions, local emissions (e.g., biomass burning, religious activities) also contributed much to the atmospheric pollutants. This study provides a basis for the formulation of future urban air pollution control measures on the TP.
关键词	PM2.5 Ozone Air pollution Distribution Tibetan Plateau
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	AEROSOL AND AIR QUALITY RESEARCH
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/112039
作者单位	Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Pengfei,Kang, Shichang,Yang, Junhua,et al. Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017[J]. 中国科学院西北生态环境资源研究院,2019,19(3).
APA	Chen, Pengfei.,Kang, Shichang.,Yang, Junhua.,Pu, Tao.,Li, Chaoliu.,...&Tripathee, Lekhendra.(2019).Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017.AEROSOL AND AIR QUALITY RESEARCH,19(3).
MLA	Chen, Pengfei,et al."Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017".AEROSOL AND AIR QUALITY RESEARCH 19.3(2019).