DOI: 10.1002/2014GL062898
论文题名: Interhemispheric air temperature phase relationships in the nonlinear Dansgaard-Oeschger oscillation
作者: Vettoretti G. ; Peltier W.R.
刊名: Geophysical Research Letters
ISSN: 0094-8955
EISSN: 1944-8686
出版年: 2015
卷: 42, 期: 4 起始页码: 1180
结束页码: 1189
语种: 英语
英文关键词: paleoclimatology
Scopus关键词: Climate models
; Ice
; Oceanography
; Reservoirs (water)
; Sea ice
; Surface waters
; Air temperature variations
; Atlantic meridional overturning circulations
; Dansgaard-Oeschger cycles
; Model-based analysis
; Northern Hemispheres
; Paleoclimatology
; Sea surface temperature (SST)
; Southern Hemisphere
; Atmospheric temperature
; air temperature
; amplitude
; climate modeling
; Dansgaard-Oeschger cycle
; ice core
; meridional circulation
; nonlinearity
; Northern Hemisphere
; reservoir
; sea surface temperature
; Southern Hemisphere
; thermocline
; Antarctica
; Atlantic Ocean
; Atlantic Ocean (North)
; East Antarctica
; Queen Maud Land
; Southern Ocean
英文摘要: It has previously been suggested that the Southern Ocean might act as a thermal reservoir in mediating the relationship between the northern and southern hemisphere air temperature signals during a Dansgaard-Oeschger cycle. On the basis of a climate model-based analysis, we demonstrate on the contrary that it is equatorial and subtropical North Atlantic thermocline waters that act so as to integrate and damp the northern hemisphere signal to fix the amplitude and phase of the southern hemisphere counterpart to the more intense North Atlantic component of the oscillation. The dynamics of the Southern Ocean component of the Atlantic meridional overturning circulation are critical in explaining the evolution of the interhemispheric temperature phase relationships. European Project for Ice Coring in Antarctica Dronning Maud Land-inferred air temperature variations are in phase with sea surface temperatures north of the Antarctic sea ice edge, suggesting that it is via a fast atmospheric pathway that this temperature signal is transmitted into the Antarctic ice core record. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924854579&doi=10.1002%2f2014GL062898&partnerID=40&md5=9962f128360b6d43d0666a64b7343f76
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8571
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: Department of Physics, University of Toronto, Toronto, ON, Canada
Recommended Citation:
Vettoretti G.,Peltier W.R.. Interhemispheric air temperature phase relationships in the nonlinear Dansgaard-Oeschger oscillation[J]. Geophysical Research Letters,2015-01-01,42(4).