气候变化领域集成服务门户(CCPortal): Indirect contributions of global fires to surface ozone through ozone-vegetation feedback

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DOI	10.5194/acp-21-11531-2021
	Indirect contributions of global fires to surface ozone through ozone-vegetation feedback
	Lei Y.; Yue X.; Liao H.; Zhang L.; Yang Y.; Zhou H.; Tian C.; Gong C.; Ma Y.; Gao L.; Cao Y.
发表日期	2021
ISSN	1680-7316
起始页码	11531
结束页码	11543
卷号	21 期号:15
英文摘要	Fire is an important source of ozone (O3) precursors. The formation of surface O3 can cause damage to vegetation and reduce stomatal conductance. Such processes can feed back to inhibit dry deposition and indirectly enhance surface O3. Here, we apply a fully coupled chemistry-vegetation model to estimate the indirect contributions of global fires to surface O3 through O3-vegetation feedback during 2005-2012. Fire emissions directly increase the global annual mean O3 by 1.2 ppbv (5.0 %) with a maximum of 5.9 ppbv (24.4 %) averaged over central Africa by emitting a substantial number of precursors. Considering O3-vegetation feedback, fires additionally increase surface O3 by 0.5 ppbv averaged over the Amazon in October, 0.3 ppbv averaged over southern Asia in April, and 0.2 ppbv averaged over central Africa in April. During extreme O3-vegetation interactions, such a feedback can rise to 0:6 ppbv in these fire-prone areas. Moreover, large ratios of indirect-To-direct fire O3 are found in eastern China (3.7 %) and the eastern US (2.0 %), where the high ambient O3 causes strong O3-vegetation interactions. With the likelihood of increasing fire risks in a warming climate, fires may promote surface O3 through both direct emissions and indirect chemistry-vegetation feedbacks. Such indirect enhancement will cause additional threats to public health and ecosystem productivity. © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric pollution; biological production; dry deposition; ecosystem response; emission inventory; feedback mechanism; fire behavior; global perspective; ozone; pollution exposure; pollution monitoring; public health; stomatal conductance; vegetation cover; Amazonia; Central Africa; China; South Asia
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246686
作者单位	Climate Change Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100029, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Sch. of Environ. Sci. and Eng., Nanjing University of Information Science and Technology (NUIST, Nanjing, 210044, China; Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
推荐引用方式 GB/T 7714	Lei Y.,Yue X.,Liao H.,et al. Indirect contributions of global fires to surface ozone through ozone-vegetation feedback[J],2021,21(15).
APA	Lei Y..,Yue X..,Liao H..,Zhang L..,Yang Y..,...&Cao Y..(2021).Indirect contributions of global fires to surface ozone through ozone-vegetation feedback.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(15).
MLA	Lei Y.,et al."Indirect contributions of global fires to surface ozone through ozone-vegetation feedback".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.15(2021).