Orbital and Millennial Antarctic Climate Variability over the Past 800,000 Years
Jean Jouzel,Valérie Masson-Delmotte,O. Cattani,Gabrielle Dreyfus,S. Falourd,G. P. Hoffmann,Bénédicte Minster,Julius Nouet,Jean-Marc Barnola,Jérôme Chappellaz,Hubertus Fischer,J. C. Gallet,Sigfus J Johnsen,Sigfus J Johnsen,Markus Leuenberger,L. Loulergue,D. Luethi,Hans Oerter,Frédéric Parrenin,Grant M. Raisbeck,Dominique Raynaud,Adrian Schilt,Jakob Schwander,Enricomaria Selmo,Roland Souchez,Renato Spahni,Bernhard Stauffer,Jørgen Peder Steffensen,Barbara Stenni,Thomas F. Stocker,Jean-Louis Tison,Martin Werner,Eric W. Wolff +32 more
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TLDR
It is suggested that the interplay between obliquity and precession accounts for the variable intensity of interglacial periods in ice core records.Abstract:
A high-resolution deuterium profile is now available along the entire European Project for Ice Coring in Antarctica Dome C ice core, extending this climate record back to marine isotope stage 20.2, ∼800,000 years ago. Experiments performed with an atmospheric general circulation model including water isotopes support its temperature interpretation. We assessed the general correspondence between Dansgaard-Oeschger events and their smoothed Antarctic counterparts for this Dome C record, which reveals the presence of such features with similar amplitudes during previous glacial periods. We suggest that the interplay between obliquity and precession accounts for the variable intensity of interglacial periods in ice core records.read more
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High-resolution carbon dioxide concentration record 650,000–800,000 years before present
Dieter Lüthi,Martine Le Floch,Bernhard Bereiter,Thomas Blunier,Jean-Marc Barnola,Urs Siegenthaler,Dominique Raynaud,Jean Jouzel,Hubertus Fischer,Kenji Kawamura,Thomas F. Stocker +10 more
TL;DR: It is found that atmospheric carbon dioxide is strongly correlated with Antarctic temperature throughout eight glacial cycles but with significantly lower concentrations between 650,000 and 750,000 yr before present, which extends the pre-industrial range of carbon dioxide concentrations during the late Quaternary by about 10 p.p.m.v.
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A 60 000 year Greenland stratigraphic ice core chronology
Anders Svensson,Katrine Krogh Andersen,Matthias Bigler,Henrik Clausen,Dorthe Dahl-Jensen,Siwan M. Davies,Sigfus J Johnsen,Raimund Muscheler,Frédéric Parrenin,Sune Olander Rasmussen,Regine Röthlisberger,Inger K Seierstad,Jørgen Peder Steffensen,Bo Møllesøe Vinther,Bo Møllesøe Vinther +14 more
TL;DR: The Greenland Ice Core Chronology 2005 (GICC05) as discussed by the authors is a time scale based on annual layer counting of high-resolution records from Greenland ice cores, which continuously covers the past 60 ka.
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Target atmospheric CO2: Where should humanity aim?
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The Asian monsoon over the past 640,000 years and ice age terminations
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Transient Simulation of Last Deglaciation with a New Mechanism for Bølling-Allerød Warming
Zhengyu Liu,Bette L. Otto-Bliesner,Feng He,Esther C. Brady,Robert A. Tomas,Peter U. Clark,Anders E. Carlson,Jean Lynch-Stieglitz,William B Curry,Edward J. Brook,David J. Erickson,Robert Jacob,John E. Kutzbach,Jun Cheng,Jun Cheng +14 more
TL;DR: The first synchronously coupled atmosphere-ocean general circulation model simulation from the Last Glacial Maximum to the Bølling-Allerød (BA) warming reproduces several major features of the deglacial climate evolution, suggesting a good agreement in climate sensitivity between the model and observations.
References
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Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica
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High-resolution record of Northern Hemisphere climate extending into the last interglacial period.
Katrine Krogh Andersen,Nobuhiko Azuma,Jean-Marc Barnola,M. Bigler,Pierre E. Biscaye,Nicolas Caillon,Jérôme Chappellaz,H. B. Clausen,Dorthe Dahl-Jensen,Hubertus Fischer,Jacqueline Flückiger,Diedrich Fritzsche,Yoshiyuki Fujii,Kumiko Goto-Azuma,Karl Grönvold,Niels S. Gundestrup,Margareta Hansson,Christof Huber,Christine S. Hvidberg,Sigfus J Johnsen,Ulf Jonsell,Jean Jouzel,S. Kipfstuhl,Amaelle Landais,Markus Leuenberger,Regi D. Lorrain,Valérie Masson-Delmotte,Heinrich Miller,Hideaki Motoyama,Hideki Narita,Trevor Popp,Sune Olander Rasmussen,Dominique Raynaud,R. Röthlisberger,U. Ruth,Denis Samyn,Jakob Schwander,Hitoshi Shoji,M. L. Siggard-Andersen,Jørgen Peder Steffensen,Thomas F. Stocker,A. E. Sveinbjörnsdottir,Anders Svensson,Morimasa Takata,Jean-Louis Tison,T. Thorsteinsson,Okitsugu Watanabe,Frank Wilhelms,James W. C. White +48 more
TL;DR: An undisturbed climate record from a North Greenland ice core, which extends back to 123,000 years before the present, within the last interglacial period, shows a slow decline in temperatures that marked the initiation of the last glacial period.
Journal ArticleDOI
Long-term variations of daily insolation and Quaternary climatic changes
TL;DR: In this paper, a trigonometrical formula for the Earth's orbital elements is presented, which allows direct spectral analysis and the computation of those long-term variations of the orbital elements which are of primary interest for the calculation of the insolation.
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