气候变化领域集成服务门户(CCPortal): Long-term variations in surface ozone at the Longfengshan Regional Atmosphere Background Station in Northeast China and related influencing factors

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DOI	10.1016/j.envpol.2024.123748
	Long-term variations in surface ozone at the Longfengshan Regional Atmosphere Background Station in Northeast China and related influencing factors
	Zhang, Xiaoyi; Sun, Jingmin; Lin, Weili; Xu, Wanyun; Zhang, Gen; Wu, Yanling; Dai, Xin; Zhao, Jinrong; Yu, Dajiang; Xu, Xiaobin
发表日期	2024
ISSN	0269-7491
EISSN	1873-6424
起始页码	348
卷号	348
英文摘要	Surface ozone (O-3) is a crucial air pollutant that affects air quality, human health, agricultural production, and climate change. Studies on long-term O-3 variations and their influencing factors are essential for understanding O-3 pollution and its impact. Here, we conducted an analysis of long-term variations in O-3 during 2006-2022 at the Longfengshan Regional Atmosphere Background Station (LFS; 44.44 degrees N, 127.36 degrees E, 330.5 m a.s.l.) situated on the northeastern edge of the Northeast China Plains. The maximum daily 8-h average (MDA8) O-3 fluctuated substantially, with the annual MDA8 decreasing significantly during 2006-2015 (-0.62 ppb yr(-1), p < 0.05), jumping during 2015-2016 and increasing clearly during 2020-2022. Step multiple linear regression models for MDA8 were obtained using meteorological variables, to decompose anthropogenic and meteorological contributions to O-3 variations. Anthropogenic activities acted as the primary drivers of the long-term trends of MDA8 O-3, contributing 73% of annual MDA8 O-3 variability, whereas meteorology played less important roles (27%). Elevated O-3 at LFS were primarily associated with airflows originating from the North China Plain, Northeast China Plain, and coastal areas of North China, primarily occurring during the warm months (May-October). Based on satellite products of NO2 and HCHO columns, the O-3 photochemical regimes over LFS revealed NOx-limited throughout the period. NO2 increased first, reaching peak in 2011, followed by substantial decrease; while HCHO exhibited significant increase, contributing to decreasing trend in MDA8 O-3 during 2006-2015. The plateauing NO2 and decreasing HCHO may contribute to the increase in MDA8 O-3 in 2016. Subsequently, both NO2 and HCHO exhibited notable fluctuations, leading to significant changes in O-3. The study results fill the gap in the understanding of long-term O-3 trends in high-latitude areas in the Northeast China Plain and offer valuable insights for assessing the impact of O-3 on crop yields, forest productivity, and climate change.
英文关键词	Background ozone; Northeast China; Long-term trend; Influencing factors
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001215619300001
来源期刊	ENVIRONMENTAL POLLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291617
作者单位	China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Fudan University
推荐引用方式 GB/T 7714	Zhang, Xiaoyi,Sun, Jingmin,Lin, Weili,et al. Long-term variations in surface ozone at the Longfengshan Regional Atmosphere Background Station in Northeast China and related influencing factors[J],2024,348.
APA	Zhang, Xiaoyi.,Sun, Jingmin.,Lin, Weili.,Xu, Wanyun.,Zhang, Gen.,...&Xu, Xiaobin.(2024).Long-term variations in surface ozone at the Longfengshan Regional Atmosphere Background Station in Northeast China and related influencing factors.ENVIRONMENTAL POLLUTION,348.
MLA	Zhang, Xiaoyi,et al."Long-term variations in surface ozone at the Longfengshan Regional Atmosphere Background Station in Northeast China and related influencing factors".ENVIRONMENTAL POLLUTION 348(2024).