气候变化领域集成服务门户(CCPortal): Effects of ozone-vegetation interactions on meteorology and air quality in China using a two-way coupled land-atmosphere model

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DOI	10.5194/acp-22-765-2022
	Effects of ozone-vegetation interactions on meteorology and air quality in China using a two-way coupled land-atmosphere model
	Zhu, Jiachen; Tai, Amos P. K.; Yim, Steve Hung Lam
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	765
结束页码	782
卷号	22 期号:2 页码:18
英文摘要	Tropospheric ozone (O-3) is one of the most important air pollutants in China and is projected to continue to increase in the near future. O-3 and vegetation closely interact with each other and such interactions may not only affect plant physiology (e.g., stomatal conductance and photosynthesis) but also influence the overlying meteorology and air quality through modifying leaf stomatal behaviors. Previous studies have highlighted China as a hotspot in terms of O-3 pollution and O-3 damage to vegetation. Yet, few studies have investigated the effects of O-3-vegetation interactions on meteorology and air quality in China, especially in the light of recent severe O-3 pollution. In this study, a two-way coupled land-atmosphere model was applied to simulate O-3 damage to vegetation and the subsequent effects on meteorology and air quality in China. Our results reveal that O-3 causes up to 16 % enhancement in stomatal resistance, whereby large increases are found in the Henan, Hebei, and Shandong provinces. O-3 damage causes more than 0.6 mu mol CO2 m(-2) s(-1) reductions in photosynthesis rate and at least 0.4 and 0.8 g C m(-2) d(-1) decreases in leaf area index (LAI) and gross primary production (GPP), respectively, and hotspot areas appear in the northeastern and southern China. The associated reduction in transpiration causes a 5-30 W m(-2) decrease (increase) in latent heat (sensible heat) flux, which induces a 3 % reduction in surface relative humidity, 0.2-0.8 K increase in surface air temperature, and 40-120 m increase in boundary-layer height in China. We also found that the meteorological changes further induce a 2-6 ppb increase in O-3 concentration in northern and south-central China mainly due to enhanced isoprene emission following increased air temperature, demonstrating that O-3-vegetation interactions can lead to strong positive feedback that can amplify O-3 pollution in China. Our findings emphasize the importance of considering the effects of O-3 damage and O-3-vegetation interactions in air quality simulations, with ramifications for both air quality and forest management.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000747081100001
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/273660
作者单位	Chinese University of Hong Kong; Chinese University of Hong Kong; Nanyang Technological University & National Institute of Education (NIE) Singapore; Nanyang Technological University; Nanyang Technological University & National Institute of Education (NIE) Singapore; Nanyang Technological University; Nanyang Technological University & National Institute of Education (NIE) Singapore; Nanyang Technological University
推荐引用方式 GB/T 7714	Zhu, Jiachen,Tai, Amos P. K.,Yim, Steve Hung Lam. Effects of ozone-vegetation interactions on meteorology and air quality in China using a two-way coupled land-atmosphere model[J],2022,22(2):18.
APA	Zhu, Jiachen,Tai, Amos P. K.,&Yim, Steve Hung Lam.(2022).Effects of ozone-vegetation interactions on meteorology and air quality in China using a two-way coupled land-atmosphere model.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(2),18.
MLA	Zhu, Jiachen,et al."Effects of ozone-vegetation interactions on meteorology and air quality in China using a two-way coupled land-atmosphere model".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.2(2022):18.