Early Younger Dryas glacier culmination in southern Alaska: Implications for North Atlantic climate change during the last deglaciation

Geology ◽  
2019 ◽  
Vol 47 (6) ◽  
pp. 550-554 ◽  
Author(s):  
Nicolás E. Young ◽  
Jason P. Briner ◽  
Joerg Schaefer ◽  
Susan Zimmerman ◽  
Robert C. Finkel
Keyword(s):  
Climate Change ◽  
North Atlantic ◽  
Younger Dryas ◽  
Last Deglaciation ◽  
North Atlantic Climate ◽  
The Last Deglaciation

Rapid precipitation changes in the tropical West Pacific linked to North Atlantic climate forcing during the last deglaciation

2018 ◽  
Vol 197 ◽  
pp. 288-306 ◽  
Author(s):  
Zhifang Xiong ◽  
Tiegang Li ◽  
Fengming Chang ◽  
Thomas J. Algeo ◽  
Peter D. Clift ◽  
...  
Keyword(s):  
North Atlantic ◽  
Climate Forcing ◽  
Last Deglaciation ◽  
West Pacific ◽  
North Atlantic Climate ◽  
The Last Deglaciation ◽  
Precipitation Changes

scholarly journals Erratum: The timing of the last deglaciation in North Atlantic climate records

Nature ◽  
2001 ◽  
Vol 413 (6855) ◽  
pp. 548-548 ◽  
Author(s):  
Claire Waelbroeck ◽  
Jean-Claude Duplessy ◽  
Elisabeth Michel ◽  
Laurent Labeyrie ◽  
Didier Paillard ◽  
...  
Keyword(s):  
North Atlantic ◽  
Last Deglaciation ◽  
Climate Records ◽  
North Atlantic Climate ◽  
The Last Deglaciation

Dating rapid climate change in the North Atlantic during Heinrich Stadial 1

2020 ◽  
Author(s):  
Andrea Burke ◽  
Rosanna Greenop ◽  
James Rae ◽  
Rhian Rees-Owen ◽  
Paula Reimer ◽  
...  
Keyword(s):  
Climate Change ◽  
Ocean Circulation ◽  
North Atlantic ◽  
Sediment Cores ◽  
Last Deglaciation ◽  
Large Reservoir ◽  
The North ◽  
The Last Deglaciation ◽  
The North Atlantic ◽  
Reservoir Age

<p>Paleoclimate records from the North Atlantic show some of the most iconic signals of abrupt climate change during the ice ages. Here we use radiocarbon as a tracer of ocean circulation and air-sea gas exchange to investigate potential mechanisms for the abrupt climate changes seen in the North Atlantic over the last deglaciation. We have created a stack of North Atlantic surface radiocarbon reservoir ages over the past 20,000 years, using new synchronized age models from thirteen sediment cores refined with thorium normalization between tie-points. This stack shows consistent and large reservoir age increases of more than 1000 years from the LGM into HS1, dropping abruptly back to approximately modern reservoir ages before the onset of the Bolling-Allerod. We use the intermediate complexity earth system model cGENIE to investigate the potential drivers of these reservoir age changes. We find that sea ice, circulation and CO<sub>2</sub> all play important roles in setting the reservoir age. We use these coherently dated records to revisit the sequence and timing of climatic events during HS1 and the last deglaciation, and show that Laurentide Heinrich Events are a response to stadial conditions, rather than their root cause.</p>

The timing of the last deglaciation in North Atlantic climate records

Nature ◽  
2001 ◽  
Vol 412 (6848) ◽  
pp. 724-727 ◽  
Author(s):  
Claire Waelbroeck ◽  
Jean-Claude Duplessy ◽  
Elisabeth Michel ◽  
Laurent Labeyrie ◽  
Didier Paillard ◽  
...  
Keyword(s):  
North Atlantic ◽  
Last Deglaciation ◽  
Climate Records ◽  
North Atlantic Climate ◽  
The Last Deglaciation

Climate change in the circum-North Atlantic region during the last deglaciation

Nature ◽  
1989 ◽  
Vol 338 (6216) ◽  
pp. 553-557 ◽  
Author(s):  
Jonathan T. Overpeck ◽  
Larry C. Peterson ◽  
Nilva Kipp ◽  
John Imbrie ◽  
David Rind
Keyword(s):  
Climate Change ◽  
North Atlantic ◽  
Last Deglaciation ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
The Last Deglaciation

scholarly journals Erratum: correction: The timing of the last deglaciation in North Atlantic climate records

Nature ◽  
2001 ◽  
Vol 414 (6862) ◽  
pp. 470-470 ◽  
Author(s):  
Claire Waelbroeck ◽  
Jean-Claude Duplessy ◽  
Elisabeth Michel ◽  
Laurent Labeyrie ◽  
Didier Paillard ◽  
...  
Keyword(s):  
North Atlantic ◽  
Last Deglaciation ◽  
Climate Records ◽  
North Atlantic Climate ◽  
The Last Deglaciation

A Speleothem Record of Younger Dryas Cooling, Klamath Mountains, Oregon, USA

2005 ◽  
Vol 64 (2) ◽  
pp. 249-256 ◽  
Author(s):  
David A. Vacco ◽  
Peter U. Clark ◽  
Alan C. Mix ◽  
Hai Cheng ◽  
R. Lawrence Edwards
Keyword(s):  
Climate Change ◽  
Northern Hemisphere ◽  
Younger Dryas ◽  
Sampling Interval ◽  
Temperature Variability ◽  
Early Holocene ◽  
Last Deglaciation ◽  
Klamath Mountains ◽  
Scale Temperature ◽  
The Last Deglaciation

AbstractA well-dated δ18O record in a stalagmite from a cave in the Klamath Mountains, Oregon, with a sampling interval of 50 yr, indicates that the climate of this region cooled essentially synchronously with Younger Dryas climate change elsewhere in the Northern Hemisphere. The δ18O record also indicates significant century-scale temperature variability during the early Holocene. The δ13C record suggests increasing biomass over the cave through the last deglaciation, with century-scale variability but with little detectable response of vegetation to Younger Dryas cooling.

The chronology of the last Deglaciation: Implications to the cause of the Younger Dryas Event

1988 ◽  
Vol 3 (1) ◽  
pp. 1-19 ◽  
Author(s):  
W. S. Broecker ◽  
M. Andree ◽  
W. Wolfli ◽  
H. Oeschger ◽  
G. Bonani ◽  
...  
Keyword(s):  
Younger Dryas ◽  
Last Deglaciation ◽  
The Last Deglaciation ◽  
Younger Dryas Event

Timing of the last Deglaciation in the Sierra Nevada of the Mérida Andes, Venezuela

2013 ◽  
Vol 80 (3) ◽  
pp. 482-494 ◽  
Author(s):  
Julien Carcaillet ◽  
Isandra Angel ◽  
Eduardo Carrillo ◽  
Franck A. Audemard ◽  
Christian Beck
Keyword(s):  
Sierra Nevada ◽  
Late Pleistocene ◽  
Younger Dryas ◽  
Ice Cover ◽  
Published Data ◽  
Last Deglaciation ◽  
The Last Deglaciation ◽  
Absolute Age ◽  
Glacial Landforms

In the tropical Mérida Andes (northwestern Venezuela), glacial landforms were found at altitudes between 2600 and 5000 m, corresponding to 600 km2 of ice cover during the maximum glacial extension. However, the lack of sufficient absolute age data prevents detailed reconstruction of the timing of the last deglaciation. On the northwestern flank of the Mucuñuque Massif, successive moraines and striated eroded basement surfaces were sampled for cosmogenic 10Be investigation. Their compilation with published data allows the establishment of a detailed chronology of the post-LGM glacier history. The oldest moraines (18.1 and 16.8 ka) correspond to the Oldest Dryas. Successive moraine ridges indicate stops in the overall retreat between the LGM and the Younger Dryas. The cold and short Older Dryas stadial has been identified. Results indicate that most of the ice withdrew during the Pleistocene. The dataset supports an intensification of the vertical retreat rate from ~ 25 m/ka during the late Pleistocene to ~ 310 m/ka during the Pleistocene/Holocene. Afterwards, the glacier was confined and located in the higher altitude zones. The altitude difference of the Younger Dryas moraines in the Mucubají, La Victoria and Los Zerpa valleys indicates a strong effect of valley orientation on the altitude of moraine development.

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