气候变化领域集成服务门户(CCPortal): Observed changes in Brewer-Dobson circulation for 1980-2018

CCPortal

DOI	10.1088/1748-9326/ab4de7
	Observed changes in Brewer-Dobson circulation for 1980-2018
	Fu Q.; Solomon S.; Pahlavan H.A.; Lin P.
发表日期	2019
ISSN	17489318
卷号	14 期号:11
英文摘要	Previous work has examined the Brewer-Dobson circulation (BDC) changes for 1980-2009 based on satellite Microwave Sounding Unit (MSU/AMSU) lower-stratospheric temperature (T LS) observations and ERA-Interim reanalysis data. Here we examine the BDC changes for the longer period now available (1980-2018), which also allows analysis of both the ozone depletion (1980-1999) and ozone healing (2000-2018) periods. We provide observational evidence that the annual mean BDC accelerated for 1980-1999 but decelerated for 2000-2018, with the changes largely driven by the Southern Hemisphere (SH), which might be partly contributed by the effects of ozone depletion and healing. We also show that the annual mean BDC has accelerated in the last 40 years (at the 90% confidence level) with a relative strengthening of ∼1.7% per decade. This overall acceleration was driven by both Northern Hemisphere (40%) and SH (60%) cells. Significant SH radiative warming is also identified in September for 2000-2018 after excluding the year 2002 when a very rare SH stratospheric sudden warming occurred, supporting the view that healing of the Antarctic ozone layer has now begun to occur during the month of September. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Brewer-Dobson circulation; MSU/AMSU; ozone depletion and healing
语种	英语
scopus关键词	Ozone; Antarctic ozone layer; Brewer-Dobson circulation; Lower stratospheric temperature; Microwave sounding unit; MSU/AMSU; Northern Hemispheres; Ozone depletion; Stratospheric sudden warmings; Ozone layer; atmospheric circulation; global warming; microwave limb sounder; Northern Hemisphere; ozone depletion; satellite altimetry; seasonality; Southern Hemisphere; Antarctica
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154775
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Fu Q.,Solomon S.,Pahlavan H.A.,et al. Observed changes in Brewer-Dobson circulation for 1980-2018[J],2019,14(11).
APA	Fu Q.,Solomon S.,Pahlavan H.A.,&Lin P..(2019).Observed changes in Brewer-Dobson circulation for 1980-2018.Environmental Research Letters,14(11).
MLA	Fu Q.,et al."Observed changes in Brewer-Dobson circulation for 1980-2018".Environmental Research Letters 14.11(2019).