Warm Nordic Seas delayed glacial inception in Scandinavia

被引：15

作者：

Born, A. ^{[1
,2
,3
]}

Kageyama, M. ^{[3
]}

Nisancioglu, K. H. ^{[1
,4
]}

机构：

[1] Bjerknes Ctr Climate Res, Bergen, Norway

[2] Univ Bergen, Inst Geophys, Bergen, Norway

[3] Lab Sci Climat & Environm, Gif Sur Yvette, France

[4] UNI Res, Bergen, Norway

来源：

CLIMATE OF THE PAST | 2010年 / 6卷 / 06期

关键词：

ICE-SHEET; TRANSIENT SIMULATION; ISOTOPE STAGE-5; SENSITIVITY; MODEL; CIRCULATION; LEVEL; HISTORY; SURFACE; MIDDLE;

D O I：

10.5194/cp-6-817-2010

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We simulate the last glacial inception, 115 000 years ago, with a three dimensional thermomechanical ice sheet model of the Northern Hemisphere, forced by a comprehensive coupled climate model. High oceanic heat transport into the Nordic Seas prevents large scale ice growth over Scandinavia. Glacial inception in the region starts on the highest mountains in the south when sea surface temperatures in the Nordic Seas are reduced by at least 3 degrees C. Ice growth in Northern Scandinavia requires a cooling by at least 4 degrees C. This is in good agreement with marine proxy data from the Nordic Seas and North Atlantic as well as available terrestrial data. This study thus provides a physical understanding and revised timing of the first glacier advance over Scandinavia.

引用

页码：817 / 826

页数：10

共 43 条

[1] GLACIAL INCEPTION AND DISINTEGRATION DURING LAST GLACIATION [J].

ANDREWS, JT ;

BARRY, RG .

ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, 1978, 6 :205-228

[2]

[Anonymous], 1991, KLIMAGESCHICHTICHE P

[3] REFLECTION OF SCANDINAVIAN ICE-SHEET FLUCTUATIONS IN NORWEGIAN SEA SEDIMENTS DURING THE PAST 150,000 YEARS [J].

BAUMANN, KH ;

LACKSCHEWITZ, KS ;

MANGERUD, J ;

SPIELHAGEN, RF ;

WOLFWELLING, TCW ;

HENRICH, R ;

KASSENS, H .

QUATERNARY RESEARCH, 1995, 43 (02) :185-197

[4]

BORN A, 2010, PALEOCEANOG IN PRESS

[5] Sea ice induced changes in ocean circulation during the Eemian [J].

Born, Andreas ;

Nisancioglu, Kerim H. ;

Braconnot, Pascale .

CLIMATE DYNAMICS, 2010, 35 (7-8) :1361-1371

[6] Monsoon response to changes in Earth's orbital parameters: comparisons between simulations of the Eemian and of the Holocene [J].

Braconnot, P. ;

Marzin, C. ;

Gregoire, L. ;

Mosquet, E. ;

Marti, O. .

CLIMATE OF THE PAST, 2008, 4 (04) :281-294

[7] New perspectives on Beringian Quaternary paleogeography, stratigraphy, and glacial history [J].

Brigham-Grette, J .

QUATERNARY SCIENCE REVIEWS, 2001, 20 (1-3) :15-24

[8] Last interglacial (isotope stage 5) glacial and sea-level history of coastal Chukotka Peninsula and St. Lawrence Island, Western Beringia [J].

Brigham-Grette, J ;

Hopkins, DM ;

Ivanov, VF ;

Basilyan, AE ;

Benson, SL ;

Heiser, PA ;

Pushkar, VS .

QUATERNARY SCIENCE REVIEWS, 2001, 20 (1-3) :419-436

[9] A semi-analytical solution for the positive degree-day model with stochastic temperature variations [J].

Calov, R ;

Greve, R .

JOURNAL OF GLACIOLOGY, 2005, 51 (172) :173-175

[10] Transient simulation of the last glacial inception. Part I: glacial inception as a bifurcation in the climate system [J].

Calov, R ;

Ganopolski, A ;

Claussen, M ;

Petoukhov, V ;

Greve, R .

CLIMATE DYNAMICS, 2005, 24 (06) :545-561

← 1 2 3 4 5 →