气候变化领域集成服务门户(CCPortal): Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets

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DOI	10.5194/acp-20-7035-2020
	Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets
	Szelag M.E.; Sofieva V.F.; Degenstein D.; Roth C.; Davis S.; Froidevaux L.
发表日期	2020
ISSN	1680-7316
起始页码	7035
结束页码	7047
卷号	20 期号:11
英文摘要	In this work, we analyze the seasonal dependence of ozone trends in the stratosphere using four longterm merged data sets, SAGE-CCI-OMPS, SAGE-OSIRISOMPS, GOZCARDS, and SWOOSH, which provide more than 30 years of monthly zonal mean ozone profiles in the stratosphere. We focus here on trends between 2000 and 2018. All data sets show similar results, although some discrepancies are observed. In the upper stratosphere, the trends are positive throughout all seasons and the majority of latitudes. The largest upper-stratospheric ozone trends are observed during local winter (up to 6% per decade) and equinox (up to 3% per decade) at mid-latitudes. In the equatorial region, we find a very strong seasonal dependence of ozone trends at all altitudes: The trends vary from positive to negative, with the sign of transition depending on altitude and season. The trends are negative in the upper-stratospheric winter (-1% per decade to-2% per decade) and in the lower-stratospheric spring (-2% per decade to-4% per decade), but positive (2% per decade to 3% per decade) at 30-35 km in spring, while the opposite pattern is observed in summer. The tropical trends below 25 km are negative and maximize during summer (up to-2% per decade) and spring (up to-3% per decade). In the lower mid-latitude stratosphere, our analysis points to a hemispheric asymmetry: During local summers and equinoxes, positive trends are observed in the south (C1%per decade to C2%per decade), while negative trends are observed in the north (-1% per decade to-2% per decade). We compare the seasonal dependence of ozone trends with available analyses of the seasonal dependence of stratospheric temperature trends. We find that ozone and temperature trends show positive correlation in the dynamically controlled lower stratosphere and negative correlation above 30 km, where photochemistry dominates. Seasonal trend analysis gives information beyond that contained in annual mean trends, which can be helpful in order to better understand the role of dynamical variability in shortterm trends and future ozone recovery predictions. © 2020 Author(s).
语种	英语
scopus关键词	air temperature; data processing; data set; ozone; seasonality; stratosphere; trend analysis
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/247710
作者单位	Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland; Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, Canada; NOAA Earth System Research Laboratory Chemical Sciences Division, Boulder, CO, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Szelag M.E.,Sofieva V.F.,Degenstein D.,et al. Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets[J],2020,20(11).
APA	Szelag M.E.,Sofieva V.F.,Degenstein D.,Roth C.,Davis S.,&Froidevaux L..(2020).Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(11).
MLA	Szelag M.E.,et al."Seasonal stratospheric ozone trends over 2000-2018 derived from several merged data sets".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.11(2020).