The last glacial termination

GH Denton, RF Anderson, JR Toggweiler, RL Edwards… - science, 2010 - science.org
A major puzzle of paleoclimatology is why, after a long interval of cooling climate, each late
Quaternary ice age ended with a relatively short warming leg called a termination. We here …

The polar ocean and glacial cycles in atmospheric CO2 concentration

DM Sigman, MP Hain, GH Haug - Nature, 2010 - nature.com
Global climate and the atmospheric partial pressure of carbon dioxide () are correlated over
recent glacial cycles, with lower during ice ages, but the causes of the changes are …

Wind-Driven Upwelling in the Southern Ocean and the Deglacial Rise in Atmospheric CO2

RF Anderson, S Ali, LI Bradtmiller, SHH Nielsen… - science, 2009 - science.org
Wind-driven upwelling in the ocean around Antarctica helps regulate the exchange of
carbon dioxide (CO2) between the deep sea and the atmosphere, as well as the supply of …

Beyond the bipolar seesaw: Toward a process understanding of interhemispheric coupling

JB Pedro, M Jochum, C Buizert, F He, S Barker… - Quaternary Science …, 2018 - Elsevier
The thermal bipolar ocean seesaw hypothesis was advanced by Stocker and Johnsen
(2003) as the 'simplest possible thermodynamic model'to explain the time relationship …

The Zealandia Switch: Ice age climate shifts viewed from Southern Hemisphere moraines

GH Denton, AE Putnam, JL Russell, DJA Barrell… - Quaternary Science …, 2021 - Elsevier
Two fundamental questions about the ice-age climate system await satisfactory resolution.
First, if summer solar radiation intensity truly controls the orbital signature of the last glacial …

Interhemispheric Atlantic seesaw response during the last deglaciation

S Barker, P Diz, MJ Vautravers, J Pike, G Knorr, IR Hall… - Nature, 2009 - nature.com
The asynchronous relationship between millennial-scale temperature changes over
Greenland and Antarctica during the last glacial period has led to the notion of a bipolar …

Holocene changes in the position and intensity of the southern westerly wind belt

F Lamy, R Kilian, HW Arz, JP Francois, J Kaiser… - Nature …, 2010 - nature.com
The position and intensity of the southern westerly wind belt varies seasonally as a
consequence of changes in sea surface temperature. During the austral winter, the belt …

Stable carbon isotopes in paleoceanography: atmosphere, oceans, and sediments

A Mackensen, G Schmiedl - Earth-Science Reviews, 2019 - Elsevier
Carbon is one of the key elements in organisms and non-living compounds on Earth.
Carbon dioxide and methane are important greenhouse gases in the atmosphere, dissolved …

Southern Ocean upwelling, Earth's obliquity, and glacial-interglacial atmospheric CO2 change

XE Ai, AS Studer, DM Sigman, A Martínez-García… - Science, 2020 - science.org
Previous studies have suggested that during the late Pleistocene ice ages, surface-deep
exchange was somehow weakened in the Southern Ocean's Antarctic Zone, which reduced …

The Southern Ocean during the ice ages: A review of the Antarctic surface isolation hypothesis, with comparison to the North Pacific

DM Sigman, F Fripiat, AS Studer, PC Kemeny… - Quaternary Science …, 2021 - Elsevier
Abstract The Southern Ocean is widely recognized as a potential cause of the lower
atmospheric concentration of CO 2 during ice ages, but the mechanism is debated. Focusing …