DOI: 10.1007/s00382-016-3274-5
Scopus记录号: 2-s2.0-84979595912
论文题名: The last interglacial climate: comparing direct and indirect impacts of insolation changes
作者: Pedersen R.A. ; Langen P.L. ; Vinther B.M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-09-10 起始页码: 3391
结束页码: 3407
语种: 英语
英文关键词: AMOC
; EC-Earth
; Eemian
; General circulation model
; Last interglacial
; Monsoon
英文摘要: The last interglacial climate was influenced by substantial changes in the annual insolation cycle that led to a warmer climate state with pronounced high northern latitude warming. We analyze the impact of the insolation changes 125,000 years before present using an equilibrium snapshot simulation with the EC-Earth coupled climate model at high spatial resolution. Using additional atmosphere-only simulations, we separate the direct impact from the changed insolation from the secondary contribution from changed sea surface conditions. These simulations are forced with a combination of last interglacial sea surface temperatures and sea ice conditions and pre-industrial insolation, and vice versa. The coupled simulation yields an annual mean global warming of approximately 0.5 °C compared to pre-industrial conditions. While the warming over the continents follows the annual cycle of the insolation anomalies, two regions exhibit persistent responses throughout the year: The tropical region exhibits lower temperatures and stronger monsoonal systems, while the Arctic region shows a warming of more than 2 °C in all seasons. The hybrid simulations reveal that the changed sea surface conditions dominate the response at high northern latitudes, including the North Atlantic region and Europe, while the direct insolation impact is more dominant in the tropics. © 2016, The Author(s). 资助项目: ERC, European Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53250
Appears in Collections: 过去全球变化的重建
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作者单位: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, Copenhagen, Denmark; Climate and Arctic Research, Danish Meteorological Institute, Copenhagen, Denmark
Recommended Citation:
Pedersen R.A.,Langen P.L.,Vinther B.M.. The last interglacial climate: comparing direct and indirect impacts of insolation changes[J]. Climate Dynamics,2017-01-01,48(2017-09-10)