Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China

doi:10.1016/j.scitotenv.2017.12.021

	Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China
	Cheng, Peng 1,2; Niu, Zhenchuan 1,2; Wu, Shugang 1,2; Zhou, Weijian 1,2; Feng, Tian 1,2; Li, Guohui 2,3; Xiong, Xiaohu 1,2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2018-05-15
卷号	624 期号:2018 页码:1163-1170
关键词	Delta C-14 Fossil Fuel Co2 Wrf-chem Guanzhong Basin
DOI	10.1016/j.scitotenv.2017.12.021
文献子类	Article
英文摘要	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.
WOS关键词	EMISSIONS ; MODEL ; PARAMETERIZATION ; DELTA(CO2)-C-14 ; DELTA-C-14 ; EUROPE ; MAIZE
WOS研究方向	Environmental Sciences & Ecology
WOS记录号	WOS:000426355900116
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5225]
专题	地球环境研究所_加速器质谱中心
作者单位	1.Xian AMS Ctr, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Peng,Niu, Zhenchuan,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	Cheng, Peng.,Niu, Zhenchuan.,Wu, Shugang.,Zhou, Weijian.,Feng, Tian.,...&Xiong, Xiaohu.(2018).Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China.SCIENCE OF THE TOTAL ENVIRONMENT,624(2018),1163-1170.
MLA	Cheng, Peng,et al."Simulations of summertime fossil fuel CO2 in the Guanzhong basin, China".SCIENCE OF THE TOTAL ENVIRONMENT 624.2018(2018):1163-1170.