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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
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
卷号624期号:2018页码:1163-1170
文章类型Article
摘要Recent 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.
关键词Delta C-14 Fossil Fuel Co2 Wrf-chem Guanzhong Basin
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.scitotenv.2017.12.021
关键词[WOS]EMISSIONS ; MODEL ; PARAMETERIZATION ; DELTA(CO2)-C-14 ; DELTA-C-14 ; EUROPE ; MAIZE
收录类别SCI
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000426355900116
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文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5225
专题加速器质谱中心
作者单位1.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
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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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