Quantifying ice-sheet feedbacks during the last glacial inception

被引：53

作者：

Kageyama, M

Charbit, S

Ritz, C

Khodri, M

Ramstein, G

机构：

[1] LSCE IPSL CE Saclay, F-91191 Gif Sur Yvette, France

[2] Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France

[3] Columbia Univ, Lamont Doherty Earth Observ, New York, NY USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2004年 / 31卷 / 24期

关键词：

D O I：

10.1029/2004GL021339

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The last glacial inception (similar to116 ky ago) has long been used to test the sensitivity of climate models to insolation. From these simulations, atmospheric, oceanic and vegetation feedbacks have been shown to amplify the initial insolation signal into a rapid growth of ice-sheets over the northern hemisphere. However, due to the lack of comprehensive atmosphere-ocean-vegetation-northern hemisphere ice-sheet models, the impact of all these feedbacks acting concurrently has not yet been evaluated. Here we present the results from such a model, which simulates significant ice-sheet growth over North America, but none over Eurasia. Our analyses focus on the different behaviours over these regions, and the quantification of the ice-sheet feedbacks on climate.

引用

页码：1 / 4

页数：4

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