气候变化领域集成服务门户(CCPortal): Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China

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DOI	10.1029/2020JD033263
	Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China
	Wang P.; Liu Y.; Dai J.; Fu X.; Wang X.; Guenther A.; Wang T.
发表日期	2021
ISSN	2169897X
卷号	126 期号:10
英文摘要	Among the various environmental factors that affect isoprene emissions, drought has only been given limited attention. Four different drought response (DR) schemes were implemented in the Model of Emissions of Gases and Aerosols from Nature (MEGAN, version 2.1), and the Community Multiscale Air Quality (CMAQ) model was applied to investigate the drought impacts on air quality during both drought and normal years in China. Generally, all DR schemes decrease isoprene emissions except for mild drought conditions. The significant decrease and even termination of isoprene emissions are predicted in South China under severe drought conditions. During the drought period, the DR scheme considering both mild and severe drought (SMD) improves the model performance especially in severe drought-hit regions when compared with the Ozone Monitoring Instrument (OMI) averaged formaldehyde vertical column density (HCHO VCD). The results show that most of the DR schemes decrease simulated ozone (O3) and secondary organic aerosols (SOA) levels. For both O3 and SOA, noticeable changes are predicted in the Sichuan Basin (5 ppb and 4 µg m−3 for O3 and SOA, respectively). This investigation is the first modeling study to investigate the impacts of isoprene drought response on air quality in China. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	CMAQ; drought response; isoprene; MEGAN; ozone; SOA
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/185204
作者单位	Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong; now at School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China; now at Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Department of Earth System Science, University of California, Irvine, CA, United States
推荐引用方式 GB/T 7714	Wang P.,Liu Y.,Dai J.,et al. Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China[J],2021,126(10).
APA	Wang P..,Liu Y..,Dai J..,Fu X..,Wang X..,...&Wang T..(2021).Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China.Journal of Geophysical Research: Atmospheres,126(10).
MLA	Wang P.,et al."Isoprene Emissions Response to Drought and the Impacts on Ozone and SOA in China".Journal of Geophysical Research: Atmospheres 126.10(2021).