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Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017
Chen, PF (Chen, Pengfei)1; Kang, SC (Kang, Shichang)1,2; Yang, JH (Yang, Junhua)1; Pu, T (Pu, Tao)1; Li, CL (Li, Chaoliu)2,3; Guo, JM (Guo, Junming)1; Tripathee, L (Tripathee, Lekhendra)1
Source PublicationAEROSOL AND AIR QUALITY RESEARCH
2019
Volume19Issue:3Pages:516-527
DOI10.4209/aaqr.2018.10.0360
Abstract

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.

Subject AreaEnvironmental Sciences
WOS IDWOS:000459760700008
Language英语
Indexed BySCI
KeywordPolycyclic Aromatic-hydrocarbons Provincial Capital Cities Criteria Air-pollutants Source Apportionment Surface Ozone Black Carbon Meteorological Conditions Chemical Characteristics Seasonal-variations Size Distributions
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Cooperation Status国内
ISSN1680-8584
Department环境变化与地表过程
URL查看原文
PublisherTAIWAN ASSOC AEROSOL RES-TAAR
SubtypeArticle
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9385
Collection图书馆
Corresponding AuthorKang, SC (Kang, Shichang)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China;
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Chen, PF ,Kang, SC ,Yang, JH ,et al. Spatial and Temporal Variations of Gaseous and Particulate Pollutants in Six Sites in Tibet, China, during 2016-2017[J]. AEROSOL AND AIR QUALITY RESEARCH,2019,19(3):516-527.
APA Chen, PF .,Kang, SC .,Yang, JH .,Pu, T .,Li, CL .,...&Tripathee, L .(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),516-527.
MLA Chen, PF ,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):516-527.
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