气候变化领域集成服务门户(CCPortal): Isoprene Mixing Ratios Measured at Twenty Sites in China During 2012

CCPortal

DOI	10.1029/2020JD033523
	Isoprene Mixing Ratios Measured at Twenty Sites in China During 2012–2014: Comparison With Model Simulation
	Zhang Y.; Zhang R.; Yu J.; Zhang Z.; Yang W.; Zhang H.; Lyu S.; Wang Y.; Dai W.; Wang Y.; Wang X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:24
英文摘要	Measurement-model comparisons for various atmospheric species have been widely used for evaluating the reliability of model simulations, yet such comparisons are quite limited for atmospheric isoprene due to the lack of systematic observations over a large scale. Here, we collected ambient air samples concurrently at 20 sites in China during 2012–2014 and compared the observed isoprene mixing ratios with those simulated by coupling MEGAN v2.1 with the 3-D Regional chEmical trAnsport Model. The observed average isoprene concentration for all 1,731 samples is 0.35 ± 0.03 ppbv, 13% higher than the model simulated average of 0.31 ± 0.02 ppbv; while during the growing season, the simulated average (0.53 ± 0.05 ppbv) is almost the same as the observed average (0.52 ± 0.04 ppbv). The observed isoprene average level in the north (0.35 ppbv) is similar to that in the south (0.37 ppbv). However, the model simulated average in the south (0.53 ppbv) is ∼4 times that in the north (0.14 ppbv). The model overestimated the observations at most southern sites but underestimated at most northern sites in the growing season, which might be resulted from inadequate characterization of isoprene-emitting land vegetation with fast afforestation in the north and rapid urbanization in the south. Compared to the model simulation, the observations revealed abnormally high isoprene levels in winter at some northern sites, largely due to nonbiogenic emissions, as evidenced by the enhancements of measured combustion tracers concurrent with the abnormally elevated isoprene levels. © 2020 The Authors.
英文关键词	ambient observation; China; Isoprene; model of emissions of gases and aerosols from nature; model simulation; regional chEmical trAnsport model
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185580
作者单位	State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; Department of Chemistry, Hong Kong University of Science and Technology, Kowloon, Hong Kong; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, China
推荐引用方式 GB/T 7714	Zhang Y.,Zhang R.,Yu J.,等. Isoprene Mixing Ratios Measured at Twenty Sites in China During 2012–2014: Comparison With Model Simulation[J],2020,125(24).
APA	Zhang Y..,Zhang R..,Yu J..,Zhang Z..,Yang W..,...&Wang X..(2020).Isoprene Mixing Ratios Measured at Twenty Sites in China During 2012–2014: Comparison With Model Simulation.Journal of Geophysical Research: Atmospheres,125(24).
MLA	Zhang Y.,et al."Isoprene Mixing Ratios Measured at Twenty Sites in China During 2012–2014: Comparison With Model Simulation".Journal of Geophysical Research: Atmospheres 125.24(2020).