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Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China
Feng, Tian1,2; Zhou, Weijian1,2; Wu, Shugang1,2; Niu, Zhenchuan1,2; Cheng, Peng1,2; Xiong, Xiaohu1,2; Li, Guohui1,3
2018-05-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume624Issue:2018Pages:1163-1170
SubtypeArticle
AbstractRecent studies on fossil fuel CO2 simulation associated with Delta(CO2)-C-14 measurements is quite limited, particularly in China. In this study, the fossil fuel CO2 recently added to the atmosphere (delta CO(2)ff) over the Guanzhong basin, central China, during summer 2012 is simulated using a modified WRF-CHEM model constrained by measured CO2 mixing ratio and Delta(CO2)-C-14. The model well captures the temporal variation of observed CO2 mixing ratio and Delta(CO2)-C-14, and reasonably reproduces the distribution of observed Delta(CO2)-C-14. The simulation shows a significant variation of delta CO(2)ff during summertime, ranging from <5 ppmv to similar to 100 ppmv and no remarkable trend of delta CO(2)ff is found for June, July, and August. The delta CO(2)ff level is closely associated with atmospheric diffusion conditions. The diurnal cycle of delta CO(2)ff presents a double-peak pattern, a nocturnal one and a rush-hour one, related to the development of planetary boundary layer and CO2 emission from vehicles. The spatial distributions of summertime delta CO(2)ff within the basin is clearly higher than the outside, reaching up to 40 ppmv in urban Xi'an and 15 ppmv in its surrounding areas, indicative of large local fossil fuel emissions. Furthermore, we find that neglecting the influence of summer heterotrophic respiration in terrestrial biosphere would slightly underestimate the calculated delta CO(2)ff by about 0.38 ppmv in the basin. (C) 2017 Elsevier B.V. All rights reserved.
KeywordDelta C-14 Fossil Fuel Co2 Wrf-chem Guanzhong Basin
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2017.12.021
WOS KeywordEMISSIONS ; MODEL ; PARAMETERIZATION ; DELTA(CO2)-C-14 ; DELTA-C-14 ; EUROPE ; MAIZE
Indexed BySCI
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000426355900116
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5225
Collection加速器质谱中心
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.Xian AMS Ctr, Xian 710061, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Feng, Tian,Zhou, Weijian,Wu, Shugang,et al. Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,624(2018):1163-1170.
APA Feng, Tian.,Zhou, Weijian.,Wu, Shugang.,Niu, Zhenchuan.,Cheng, Peng.,...&Li, Guohui.(2018).Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China.SCIENCE OF THE TOTAL ENVIRONMENT,624(2018),1163-1170.
MLA Feng, Tian,et al."Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China".SCIENCE OF THE TOTAL ENVIRONMENT 624.2018(2018):1163-1170.
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