Inception of the Northern European ice sheet due to contrasting ocean and insolation forcing

Type Article
Date 2007-01
Language English
Author(s) Risebrobakken Bjorg1, 2, Dokken Trond1, Ottera Odd Helge1, 3, Jansen Eystein1, 2, Gao Yongqi1, 3, Drange Helge1, 3
Affiliation(s) 1 : Bjerkness Ctr Climate Res, N-5007 Bergen, Norway.
2 : Univ Bergen, Dept Earth Sci, N-5007 Bergen, Norway.
3 : Nansen Environm & Remote Sensing Ctr, N-5006 Bergen, Norway.
Source Quaternary Research (0033-5894) (Academic Press Inc Elsevier Science), 2007-01 , Vol. 67 , N. 1 , P. 128-135
DOI 10.1016/j.yqres.2006.07.007
WOS© Times Cited 28
Keyword(s) glacial inception, Nordic Seas, Northern European ice sheets, palco-reconstruction, OGCM, AMOC, insolation, insolation gradient
Abstract About 115,000 yr ago the last interglacial reached its terminus and nucleation of new ice-sheet growth was initiated. Evidence from the northernmost Nordic Seas indicate that the inception of the last glacial was related to an intensification of the Atlantic Meridional Overturning Circulation (AMOC) in its northern limb. The enhanced AMOC, combined with minimum Northern hemisphere insolation, introduced a strong sea-land thermal gradient that, together with a strong wintertime latitudinal insolation gradient, increased the storminess and moisture transport to the high Northern European latitudes at a time when the Northern hemisphere summer insolation approached its minimum.
Full Text
File Pages Size Access
8 1 MB Access on demand
Author's final draft 20 803 KB Open access
Top of the page