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Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs
Niu,ZC(Niu,Zhenchuan)[1,2]; Zhou,WJ(Zhou,Weijian)[1,2,3]; Cheng,P(Cheng,Peng)[1,2]; Wu,SG(Wu,Shugang)[1,2]; Lu,XF(Lu,Xuefeng)[1,2]; Xiong,XH(Xiong,Xiaohu)[1,2]; Du,H(Du,Hua)[1,2]; Fu,YC(Fu,Yunchong)[1,2]
2016-10
Source PublicationEnvironmental Science & Technology
Volume50Issue:22Pages:12122-12128
Subtype期刊论文
Abstract

Six months to more than one year of atmospheric Δ14CO2 were measured in 2014-2015 at one global background site in Waliguan (WLG) and four regional background sites at Shangdianzi (SDZ), Lin'an (LAN), Longfengshan (LFS) and Luhuitou (LHT), China. The objectives of the study are to document the Δ14CO2 background levels at each site and to trace the variations in fossil fuel CO2 (CO2ff) inputs at regional background sites. Δ14CO2 at WLG varied from 7.1±2.9‰ to 32.0±3.2‰ (average 17.1±6.8‰) in 2015, with high values generally in autumn/summer and low values in winter/spring. During the same period, Δ14CO2 values at the regional background sites were found to be significantly (p < 0.05) lower than those at WLG, indicating different levels of CO2ff inputs at those sites. CO2ff concentrations at LAN (12.7±9.6 ppm) and SDZ (11.5±8.2 ppm) were significantly (p < 0.05) higher than those at LHT (4.6±4.3 ppm) in 2015. There were no significant (p > 0.05) seasonal differences in CO2ff concentrations for the regional sites. Regional sources contributed in part to the CO2ff inputs at LAN and SDZ, while local sources dominated the trend observed at LHT. These data provide a preliminary understanding of atmospheric Δ14CO2 and CO2ff inputs for a range of Chinese background sites.

DOI10.1021/acs.est.6b02814
Indexed BySCI
Language英语
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5925
Collection加速器质谱中心
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China;
2.Shaanxi Provincial Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center, Xi’an, China;
3.Beijing Normal University, Beijing, China
Recommended Citation
GB/T 7714
Niu,ZC,Zhou,WJ,Cheng,P,et al. Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs[J]. Environmental Science & Technology,2016,50(22):12122-12128.
APA Niu,ZC.,Zhou,WJ.,Cheng,P.,Wu,SG.,Lu,XF.,...&Fu,YC.(2016).Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs.Environmental Science & Technology,50(22),12122-12128.
MLA Niu,ZC,et al."Observations of Atmospheric Δ14CO2 at the Global and RegionalBackground Sites in China: Implication for Fossil Fuel CO2 Inputs".Environmental Science & Technology 50.22(2016):12122-12128.
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