globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo3013
论文题名:
The strength of the meridional overturning circulation of the stratosphere
作者: Linz M.; Plumb R.A.; Gerber E.P.; Haenel F.J.; Stiller G.; Kinnison D.E.; Ming A.; Neu J.L.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:9
起始页码: 663
结束页码: 667
语种: 英语
Scopus关键词: climate effect ; climate modeling ; data interpretation ; diabatic process ; fluoride ; meridional circulation ; nitrous oxide ; ozone ; potential temperature ; satellite data ; stratosphere ; water vapor
英文摘要: The distribution of gases such as ozone and water vapour in the stratosphere-which affect surface climate-is influenced by the meridional overturning of mass in the stratosphere, the Brewer-Dobson circulation. However, observation-based estimates of the global strength of this circulation are difficult to obtain. Here we present two calculations of the mean strength of the meridional overturning of the stratosphere. We analyse satellite data that document the global diabatic circulation between 2007-2011, and compare these to three reanalysis data sets and to simulations with a state-of-the-art chemistry-climate model. Using measurements of sulfur hexafluoride (SF6) and nitrous oxide, we calculate the global mean diabatic overturning mass flux throughout the stratosphere. In the lower stratosphere, these two estimates agree, and at a potential temperature level of 460 K (about 20 km or 60hPa in tropics) the global circulation strength is 6.3-7.6 × 109kgs-1. Higher in the atmosphere, only the SF6-based estimate is available, and it diverges from the reanalysis data and simulations. Interpretation of the SF6-data-based estimate is limited because of a mesospheric sink of SF6; however, the reanalyses also differ substantially from each other. We conclude that the uncertainty in the mean meridional overturning circulation strength at upper levels of the stratosphere amounts to at least 100%. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105727
Appears in Collections:气候减缓与适应
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作者单位: Massachusetts Inst. of Technol.-Woods Hole Oceanogr. Inst. Joint Prog. in Phys. Oceanogr., Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Courant Institute of Mathematical Sciences, New York University, New York, NY, United States; Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany; Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, CA, United States

Recommended Citation:
Linz M.,Plumb R.A.,Gerber E.P.,et al. The strength of the meridional overturning circulation of the stratosphere[J]. Nature Geoscience,2017-01-01,10(9)
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