气候变化领域集成服务门户(CCPortal): Zonal Similarity of Long-Term Changes and Seasonal Cycles of Baseline Ozone at Northern Midlatitudes

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DOI	10.1029/2019JD031908
	Zonal Similarity of Long-Term Changes and Seasonal Cycles of Baseline Ozone at Northern Midlatitudes
	Parrish D.D.; Derwent R.G.; Steinbrecht W.; Stübi R.; Van Malderen R.; Steinbacher M.; Trickl T.; Ries L.; Xu X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:13
英文摘要	The lifetime of ozone in the troposphere is approximately 3 weeks. Prevailing westerly winds at northern midlatitudes can transport air around the globe in that time. Hence, within these latitudes zonal similarity is expected in long-term changes and seasonal cycles of concentrations of baseline ozone. We quantify the degree of zonal similarity by examining eight in situ baseline ozone data sets near the west coasts of North America and Europe, that is, upwind of those continents and downwind of the Pacific and Atlantic Oceans, where the impacts of local and regional ozone sources have been largely mixed into the troposphere, giving the best-defined baseline ozone signature. Zonal similarity is found in both long-term changes and seasonal cycles. The decades-long increase in Northern Hemisphere, midlatitude baseline mixing ratios (average ~0.60 ppb year−1 from 1980–2000), has ended, with a maximum reached in the mid-2000s, followed by slow decrease (average = −0.09 ± 0.08 ppb year−1 from 2000 to the present). The year of the ozone maximum exhibits little if any statistically significant difference with location, altitude, or season. The ozone seasonal cycle differs markedly between sea-level coastal stations representative of the marine boundary layer and the free troposphere sampled at elevated sites and by sondes and aircraft. However, within each of these broad tropospheric layers, the seasonal cycles are similar at all locations. Vertical profiles of the parameters that define the long-term trends and the seasonal cycle are also similar between North America and Europe. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	baseline ozone; long-term changes; ozone maximum; seasonal cycle; zonal similarity
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/185926
作者单位	Air Quality Research Center, University of California, Davis, CA, United States; David.D.Parrish, LLC, Boulder, CO, United States; rdscientific, Newbury, United Kingdom; Deutscher Wetterdienst, Hohenpeißenberg, Germany; Federal Office of Meteorology and Climatology MeteoSwiss, Payerne, Switzerland; Royal Meteorological Institute of Belgium, Uccle (Brussels), Belgium; Empa, Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland; Karlsruher Institut für Technologie, Garmisch-Partenkirchen, Germany; GAW-Global Observatory Zugspitze-Hohenpeißenberg, Platform Zugspitze, UBA, Dessau-Roßlau, Germany; Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Chinese Academy of Meteorological Sciences, Beijing, China
推荐引用方式 GB/T 7714	Parrish D.D.,Derwent R.G.,Steinbrecht W.,et al. Zonal Similarity of Long-Term Changes and Seasonal Cycles of Baseline Ozone at Northern Midlatitudes[J],2020,125(13).
APA	Parrish D.D..,Derwent R.G..,Steinbrecht W..,Stübi R..,Van Malderen R..,...&Xu X..(2020).Zonal Similarity of Long-Term Changes and Seasonal Cycles of Baseline Ozone at Northern Midlatitudes.Journal of Geophysical Research: Atmospheres,125(13).
MLA	Parrish D.D.,et al."Zonal Similarity of Long-Term Changes and Seasonal Cycles of Baseline Ozone at Northern Midlatitudes".Journal of Geophysical Research: Atmospheres 125.13(2020).