DOI: 10.1175/JCLI-D-14-00313.1
Scopus记录号: 2-s2.0-84923032833
论文题名: Antarctic ocean and sea ice response to ozone depletion: A two-time-scale problem
作者: Ferreira D. ; Marshall J. ; Bitz C.M. ; Solomon S. ; Plumb A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 3 起始页码: 1206
结束页码: 1226
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate models
; Ice
; Ozone
; Ozone layer
; Sea ice
; Surface waters
; Time measurement
; Antarctic Ocean
; Coupled climate model
; Coupled models
; Global climate model
; Ozone depletion
; Realistic geometry
; Sea surface temperature (SST)
; Southern Annular Mode
; Oceanography
; atmosphere-ocean coupling
; climate forcing
; climate modeling
; mixed layer
; ozone depletion
; sea ice
; sea surface temperature
; Southern Ocean
英文摘要: The response of the Southern Ocean to a repeating seasonal cycle of ozone loss is studied in two coupled climate models and is found to comprise both fast and slow processes. The fast response is similar to the interannual signature of the southern annular mode (SAM) on sea surface temperature (SST), onto which the ozone hole forcing projects in the summer. It comprises enhanced northward Ekman drift, inducing negative summertime SST anomalies around Antarctica, earlier sea ice freeze-up the following winter, and northward expansion of the sea ice edge year-round. The enhanced northward Ekman drift, however, results in upwelling of warm waters from below the mixed layer in the region of seasonal sea ice. With sustained bursts of westerly winds induced by ozone hole depletion, this warming from below eventually dominates over the cooling from anomalous Ekman drift. The resulting slow time-scale response (years to decades) leads to warming of SSTs around Antarctica and ultimately a reduction in sea ice cover year-round. This two-time-scale behavior-rapid cooling followed by slow but persistent warming-is found in the two coupled models analyzed: one with an idealized geometry and the other with a complex global climate model with realistic geometry. Processes that control the time scale of the transition from cooling to warming and their uncertainties are described. Finally the implications of these results are discussed for rationalizing previous studies of the effect of the ozone hole on SST and sea ice extent. © 2015 American Meteorological Society. 资助项目: NASA, National Science Foundation
; NSF, National Science Foundation
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50726
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Atmospheric Sciences Department, University of Washington, Seattle, WA, United States; Department of Meteorology, University of Reading, Reading, United Kingdom
Recommended Citation:
Ferreira D.,Marshall J.,Bitz C.M.,et al. Antarctic ocean and sea ice response to ozone depletion: A two-time-scale problem[J]. Journal of Climate,2015-01-01,28(3)