IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Characteristics of Air Pollutants and Greenhouse Gases at a Regional Background Station in Southwestern China
Cheng, Linjun1; Ji, Dongsheng2,3; He, Jun4; Li, Liang1; Du, Li1; Cui, Yang2,5; Zhang, Hongliang6; Zhou, Luxi7; Li, Zhiqing8; Zhou, Yingxin9; Miao, Shengyuan9; Gong, Zhengyu1; Wang, Yuesi2,3
2019-05-01
Source PublicationAEROSOL AND AIR QUALITY RESEARCH
ISSN1680-8584
Volume19Issue:5Pages:1007-1023
AbstractThe characteristics of air pollutants and greenhouse gases at regional background sites are critical to assessing the impact of anthropogenic emissions on the atmospheric environment, ecosystems and climate change. However, observational studies are still scarce at such background sites. In this study, continuous hourly observations of air pollutants (O-3, CO, SO2, NOx, PM2.5 and PM10) and greenhouse gases (CO2, CH4 and N2O) were performed for one year (from January 1 to December 31, 2017) at the Gongga Mountain background station (GGS; 101 degrees 97'E, 29 degrees 55'N; elevation: 3541 m) in southwestern China. The concentrations and variations of these air pollutants and greenhouse gases were determined, and the effect of transboundary atmospheric transport on the air pollution at the study site was investigated. The results showed that the average annual concentrations (mixing ratios) of the O-3, CO, SO2, NO2, CO2, CH4, N2O, PM2.5 and PM10 were 74.7 +/- 22.0 mu g m(-3), 0.3 +/- 0.2 mg m(-3), 0.5 +/- 0.6 mu g m(-3), 1.7 +/- 1.3 mu g m(-3), 406.1 +/- 9.5 ppm, 1.941 +/- 0.071 ppm, 324.5 +/- 14.8 ppb, 6.5 +/- 6.2 mu g m(-3) and 10.6 +/- 11.2 mu g m(-3), respectively. The concentrations (mixing ratios) of the abovementioned substances at the GGS are comparable to those at other background sites in China and around the world. The slight differences among concentrations at different sites may be mainly attributable to the impacts of anthropogenic emissions near the background sites and meteorological conditions. High values of O-3 were observed in spring and summer, while SO2 and PM2.5 showed higher concentrations in summer than in autumn. Relatively high CO, NO2 and PM10 values were mostly observed in spring and winter. Relatively low CO2 concentrations were observed in summer due to the vigorous summertime photosynthesis of vegetation. The lowest concentrations for CH4 were recorded in summer, whereas the levels in the other three seasons were similar to each other; by contrast, the highest N2O concentrations were observed in summer due to enhanced microbial activity resulting from high ambient summer temperatures. A diurnal variation in O-3 was observed, with early morning minima and afternoon maxima. CO and NO2 displayed higher concentrations in the daytime than in the nighttime. A slight increase in both PM2.5 and PM10 concentrations was also recorded in the daytime. These patterns were closely related to scattered anthropogenic emissions and regional atmospheric transport. Nevertheless, CO2 exhibited lower concentrations in the daytime than in the nighttime, although CH4 showed no obvious diurnal variation. The N2O concentration peaked between 10:00 and 12:00 (local time), which can be ascribed to the enhancement of microbial activity due to the increased soil temperature. The results based on the relationship between the wind and the concentrations of air pollutants and greenhouse gases were almost consistent with those based on the potential contribution source function. It appears that O-3 and its precursors in parts of Inner Mongolia and Gansu, Ningxia, Sichuan, Chongqing and Hubei Provinces as well as adjacent areas of Hunan, Guizhou and Guangxi Provinces contributed to the increase in O-3 at the study site. The potential source areas for CO and SO2 were similar and mainly distributed in India and Pakistan and areas of Inner Mongolia and Gansu and Guizhou Provinces in China. Potential source areas for NO2, PM2.5 and PM10 were found in neighboring countries of South Asia in addition to domestic regions, including Inner Mongolia, Gansu Province and the Cheng-Yu economic region. Furthermore, parts of Yunnan Province (China) as well as India and Pakistan were potential source areas for CO2, CH4 and N2O.
KeywordAir pollutants Greenhouse gases Background station Southwestern China
DOI10.4209/aaqr.2018.11.0397
Funding OrganizationBeijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control
WOS KeywordWALIGUAN GAW STATION ; LONG-TERM TRENDS ; SURFACE OZONE ; POLLUTION EPISODES ; TROPOSPHERIC OZONE ; EMISSIONS ; AEROSOL ; METHANE ; N2O ; CH4
Language英语
Funding ProjectBeijing Municipal Science and Technology Project[D17110900150000] ; Beijing Municipal Science and Technology Project[Z171100000617002] ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control[DQGG0101]
Funding OrganizationBeijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control ; Beijing Municipal Science and Technology Project ; Beijing Municipal Science and Technology Project ; CAS Key Technology Talent Program ; CAS Key Technology Talent Program ; National Research Program for Key Issues in Air Pollution Control ; National Research Program for Key Issues in Air Pollution Control
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000466339400007
PublisherTAIWAN ASSOC AEROSOL RES-TAAR
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/91389
Collection页岩气与地质工程院重点实验室
Corresponding AuthorJi, Dongsheng
Affiliation1.China Natl Environm Monitoring Ctr, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100191, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
4.Univ Nottingham Ningbo China, Int Doctoral Innovat Ctr, Dept Chem & Environm Engn, Ningbo 315100, Zhejiang, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Louisiana State Univ, Dept Civil & Environm Engn, Baton Rouge, LA 70803 USA
7.Natl Acad Sci Engn & Med, Washington, DC 20001 USA
8.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
9.Yunnan Wuyi Expressway Construct Headquarters, Kunming 650300, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Linjun,Ji, Dongsheng,He, Jun,et al. Characteristics of Air Pollutants and Greenhouse Gases at a Regional Background Station in Southwestern China[J]. AEROSOL AND AIR QUALITY RESEARCH,2019,19(5):1007-1023.
APA Cheng, Linjun.,Ji, Dongsheng.,He, Jun.,Li, Liang.,Du, Li.,...&Wang, Yuesi.(2019).Characteristics of Air Pollutants and Greenhouse Gases at a Regional Background Station in Southwestern China.AEROSOL AND AIR QUALITY RESEARCH,19(5),1007-1023.
MLA Cheng, Linjun,et al."Characteristics of Air Pollutants and Greenhouse Gases at a Regional Background Station in Southwestern China".AEROSOL AND AIR QUALITY RESEARCH 19.5(2019):1007-1023.
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