Millennial scale feedbacks determine the shape and rapidity of glacial termination.

Millennial scale feedbacks determine the shape and rapidity of glacial termination.
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千年尺度的反馈决定了冰川终止的形状和速度。

DOI:
10.1038/s41467-021-22388-6
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发表时间:
2021-04-15
影响因子:
16.6
通讯作者:
Knorr G
Knorr G
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Barker S;Knorr G

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在晚更新世,冰川终止描述了标志着冰川周期结束的主要转变。虽然已经确定,海洋/大气系统的突然变化是冰川消融的一个普遍组成部分,但关于它们的具体作用以及冰川终止可能被大幅度的突然振荡打断的可能性,仍然存在重大不确定性。从这一角度来看,我们根据对冰川终止作为千年和轨道时间尺度变化之间的最终相互作用的理解的最新发展,来处理这些不确定性。数值气候模拟的创新和新的地质记录使我们能够突出研究的新途径,并确定诸如海平面变化等关键的剩余不确定性。
Within the Late Pleistocene, terminations describe the major transitions marking the end of glacial cycles. While it is established that abrupt shifts in the ocean/atmosphere system are a ubiquitous component of deglaciation, significant uncertainties remain concerning their specific role and the likelihood that terminations may be interrupted by large-amplitude abrupt oscillations. In this perspective we address these uncertainties in the light of recent developments in the understanding of glacial terminations as the ultimate interaction between millennial and orbital timescale variability. Innovations in numerical climate simulation and new geologic records allow us to highlight new avenues of research and identify key remaining uncertainties such as sea-level variability.
DOI: 10.1038/nature07770
发表时间: 2009-02-26
期刊: NATURE
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