DOI: 10.1175/JCLI-D-16-0532.1
Scopus记录号: 2-s2.0-85015812900
论文题名: The impact of ozone-depleting substances on tropical upwelling, as revealed by the absence of lower-stratospheric cooling since the late 1990s
作者: Polvani L.M. ; Wang L. ; Aquila V. ; Waugh D.W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 7 起始页码: 2523
结束页码: 2534
语种: 英语
Scopus关键词: Climate change
; Climate models
; Greenhouse gases
; Temperature
; Tropics
; Brewer-Dobson circulation
; Climate variability
; General circulation model
; Lower stratosphere
; Lower stratospheric temperature
; Model integration
; Ozone depleting substances
; Stratospheric circulations
; Ozone
; air temperature
; atmospheric circulation
; atmospheric general circulation model
; chlorine
; climate change
; climate variation
; cooling
; ozone
; stratosphere
英文摘要: The impact of ozone-depleting substances on global lower-stratospheric temperature trends is widely recognized. In the tropics, however, understanding lower-stratospheric temperature trends has proven more challenging. While the tropical lower-stratospheric cooling observed from 1979 to 1997 has been linked to tropical ozone decreases, those ozone trends cannot be of chemical origin, as active chlorine is not abundant in the tropical lower stratosphere. The 1979-97 tropical ozone trends are believed to originate from enhanced upwelling, which, it is often stated, would be driven by increasing concentrations of well-mixed greenhouse gases. This study, using simple arguments based on observational evidence after 1997, combined with model integrations with incrementally added single forcings, argues that trends in ozone-depleting substances, not well-mixed greenhouse gases, have been the primary driver of temperature and ozone trends in the tropical lower stratosphere until 1997, and this has occurred because ozone-depleting substances are key drivers of tropical upwelling and, more generally, of the entire Brewer-Dobson circulation. © 2017 American Meteorological Society. 资助项目: NASA, National Aeronautics and Space Administration
; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49877
Appears in Collections: 气候变化事实与影响
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作者单位: Columbia University, New York, NY, United States; Johns Hopkins University, Baltimore, MD, United States
Recommended Citation:
Polvani L.M.,Wang L.,Aquila V.,et al. The impact of ozone-depleting substances on tropical upwelling, as revealed by the absence of lower-stratospheric cooling since the late 1990s[J]. Journal of Climate,2017-01-01,30(7)