DOI: 10.5194/cp-12-1721-2016
Scopus记录号: 2-s2.0-84984633198
论文题名: Impact of ice sheet meltwater fluxes on the climate evolution at the onset of the Last Interglacial
作者: Goelzer H. ; Huybrechts P. ; Loutre M.-F. ; Fichefet T.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2016
卷: 12, 期: 8 起始页码: 1721
结束页码: 1737
语种: 英语
Scopus关键词: ice sheet
; Last Interglacial
; meltwater
; meridional circulation
; Northern Hemisphere
; paleoclimate
; sediment core
; Southern Hemisphere
; temperature gradient
; Arctic
; Atlantic Ocean
; Atlantic Ocean (North)
; Greenland
; Southern Ocean
英文摘要: Large climate perturbations occurred during the transition between the penultimate glacial period and the Last Interglacial (Termination II), when the ice sheets retreated from their glacial configuration. Here we investigate the impact of ice sheet changes and associated freshwater fluxes on the climate evolution at the onset of the Last Interglacial. The period from 135 to 120 kyrBP is simulated with the Earth system model of intermediate complexity LOVECLIM v.1.3 with prescribed evolution of the Antarctic ice sheet, the Greenland ice sheet, and the other Northern Hemisphere ice sheets. Variations in meltwater fluxes from the Northern Hemisphere ice sheets lead to North Atlantic temperature changes and modifications of the strength of the Atlantic meridional overturning circulation. By means of the interhemispheric see-saw effect, variations in the Atlantic meridional overturning circulation also give rise to temperature changes in the Southern Hemisphere, which are additionally modulated by the direct impact of Antarctic meltwater fluxes into the Southern Ocean. Freshwater fluxes from the melting Antarctic ice sheet lead to a millennial timescale oceanic cold event in the Southern Ocean with expanded sea ice as evidenced in some ocean sediment cores, which may be used to constrain the timing of ice sheet retreat. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48980
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Goelzer H.,Huybrechts P.,Loutre M.-F.,et al. Impact of ice sheet meltwater fluxes on the climate evolution at the onset of the Last Interglacial[J]. Climate of the Past,2016-01-01,12(8)