DOI: 10.1002/2015GL066538
论文题名: Ozone-induced climate change propped up by the Southern Hemisphere oceanic front
作者: Ogawa F. ; Omrani N.-E. ; Nishii K. ; Nakamura H. ; Keenlyside N.
刊名: Geophysical Research Letters
ISSN: 0094-8404
EISSN: 1944-8135
出版年: 2015
卷: 42, 期: 22 起始页码: 10056
结束页码: 10063
语种: 英语
英文关键词: midlatitude westerly
; oceanic front
; ozone depletion
; ozone-induced climate change
; southern annular mode
; troposphere-stratosphere coupling
Scopus关键词: Atmospheric temperature
; Climate models
; Oceanography
; Ozone
; Ozone layer
; Surface waters
; Troposphere
; Intergovernmental panel on climate changes
; Midlatitudes
; Oceanic fronts
; Ozone depletion
; Sea Surface Temperature gradients
; Southern Annular Mode
; Stratospheric changes
; Tropospheric variability
; Climate change
; atmospheric modeling
; climate change
; extratropical environment
; midlatitude environment
; oceanic front
; ozone depletion
; panel data
; sea surface temperature
; Southern Hemisphere
; stratosphere-troposphere interaction
; temperature gradient
; trend analysis
; uncertainty analysis
; wave action
; westerly
英文摘要: The late twentieth century was marked by a significant summertime trend in the Southern Annular Mode (SAM), the dominant mode of tropospheric variability in the extratropical Southern Hemisphere (SH). This trend with poleward shifting tropospheric westerlies was attributed to downward propagation of stratospheric changes induced by ozone depletion. However, the role of the ocean in setting the SAM response to ozone depletion and its dynamical forcing remains unclear. Here we show, using idealized experiments with a state-of-the-art atmospheric model and analysis of Intergovernmental Panel on Climate Change climate simulations, that frontal sea surface temperature gradients in the midlatitude SH are critical for translating the ozone-induced stratospheric changes down to the surface. This happens through excitation of wave forcing, which controls the vertical connection of the tropospheric SAM with the stratosphere and shows the importance of internal tropospheric dynamics for stratosphere/troposphere coupling. Thus, improved simulation of oceanic fronts may reduce uncertainties in simulating SH ozone-induced climate changes. Key Points Oceanic fronts can affect the ozone-induced surface climate change Oceanic fronts can enhance the stratosphere and troposphere dynamical coupling A realistic westerly trend requires a realistic oceanic front in a climate model. ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956945013&doi=10.1002%2f2015GL066538&partnerID=40&md5=4c064d5bd82afa8925e4abe0c519f07a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8020
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geophysical Institute, University of Bergen, Bergen, Norway
Recommended Citation:
Ogawa F.,Omrani N.-E.,Nishii K.,et al. Ozone-induced climate change propped up by the Southern Hemisphere oceanic front[J]. Geophysical Research Letters,2015-01-01,42(22).