A minimum thermodynamic model for the bipolar seesaw
TL;DR: In this article, a thermal bipolar seesaw model was proposed to explain a large fraction of the millennial climate variability measured in the isotopic composition of Antarctic ice cores, and the model resolved the apparent confusion whether northern and southern climate records are in or out of phase, synchronous or time lagged.
read more
Abstract: [1] The simplest possible model is proposed to explain a large fraction of the millennial climate variability measured in the isotopic composition of Antarctic ice cores. The model results from the classic bipolar seesaw by coupling it to a heat reservoir. In this "thermal bipolar seesaw" the heat reservoir convolves northern time signals with a characteristic timescale. Applying the model to the data of GRIP and Byrd, we demonstrate that maximum correlation can be obtained using a timescale of about 1000-1500 years. Higher correlations are obtained by first filtering out the long-term variability which is due to astronomical and greenhouse gas forcing and not part of the thermal bipolar seesaw. The model resolves the apparent confusion whether northern and southern climate records are in or out of phase, synchronous, or time lagged.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Salt exchange in the Indian-Atlantic Ocean Gateway since the Last Glacial Maximum: A compensating effect between Agulhas Current changes and salinity variations?
M.H. Simon,M.H. Simon,Xun Gong,Ian Hall,Martin Ziegler,Martin Ziegler,Stephen Barker,Gregor Knorr,Marcel T J van der Meer,Sebastian Kasper,Stefan Schouten +10 more
TL;DR: In this article, the authors reconstructed multiproxy paleosalinity changes in the Agulhas Current since the last glacial maximum and compared the salinity pattern with records from the Indian-Atlantic Ocean Gateway (I-AOG) and model simulations using a fully coupled atmosphere-ocean general circulation model.
33
Potential influence of temperature changes in the Southern Hemisphere on the evolution of the Asian summer monsoon during the last glacial period
Li Yin Han,Ting Yong Li,Hai Cheng,R. Lawrence Edwards,Chuan-Chou Shen,Hong-Chun Li,Chun Xia Huang,Jun Yun Li,Na Yuan,Hai Bo Wang,Tao Tao Zhang,Xin Zhao +11 more
TL;DR: Yangkou stalagmites were used to reconstruct the evolution of the East Asian summer monsoon (EASM) during the last glacial period (LGP).
33
Plateaus and jumps in the atmospheric radiocarbon record – potential origin and value as global age markers for glacial-to-deglacial paleoceanography, a synthesis
Michael Sarnthein,Kevin Küssner,Pieter Meiert Grootes,Blanca Ausín,Timothy I. Eglinton,Juan Muglia,Raimund Muscheler,Gordon Schlolaut +7 more
TL;DR: In this paper, a fine structure of jumps and plateaus in the record of radio-carbon (14C) concentration of the atmosphere and surface ocean that reflects changes in atmospheric 14C production as well as in the 14C exchange between air and sea and within the ocean is proposed.
Destabilization of glacial climate by the radiative impact of Atlantic Meridional Overturning Circulation disruptions
TL;DR: In this article, the authors show that in an ensemble of simulations with a global climate model, AMOC disruption causes a consistent and sustained positive radiative imbalance of ~0.4Wm2.
Abrupt change in atmospheric CO2 during the last ice age
TL;DR: This article found that approximately half of the CO2increase that occurred during the 1500-year cold period between Dansgaard-Oeschger (DO) events 8 and 9 happened rapidly, over less than two centuries.
33
References
Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica
J. R. Petit,Jean Jouzel,Dominique Raynaud,Nartsiss I. Barkov,I. Basile,Michael L. Bender,Jérôme Chappellaz,M. Davisk,G. Delaygue,Marc Delmotte,V. M. Kotlyakov,Michel Legrand,Vladimir Ya. Lipenkov,C. Lorius,Catherine Ritz,E. Saltzmank,Michel Stievenard +16 more
TL;DR: The recent completion of drilling at Vostok station in East Antarctica has allowed the extension of the ice record of atmospheric composition and climate to the past four glacial-interglacial cycles as discussed by the authors.
Evidence for general instability of past climate from a 250-kyr ice-core record
Willi Dansgaard,Sigfus J Johnsen,Sigfus J Johnsen,Henrik Clausen,Dorthe Dahl-Jensen,Niels S. Gundestrup,Claus U. Hammer,Christine S. Hvidberg,Jørgen Peder Steffensen,Arny E. Sveinbjörnsdottir,Jean Jouzel,Gerard C. Bond +11 more
TL;DR: In this paper, the authors present a detailed stable isotope record for the full length of the Greenland Ice-core Project Summit ice core, extending over the past 250 kyr according to a calculated timescale, and find that climate instability was not confined to the last glaciation, but appears also have been marked during the last interglacial (as explored more fully in a companion paper), and during the previous Saale-Holstein glacial cycle.
4.8K
Macintosh Program performs time‐series analysis
TL;DR: A Macintosh computer program that can perform many time-series analysis procedures is now available on the Internet free of charge, originally designed for paleoclimatic time series.
2.2K
Comparison of oxygen isotope records from the GISP2 and GRIP Greenland ice cores
Pieter Meiert Grootes,Minze Stuiver,James W. C. White,Sigfus J Johnsen,Sigfus J Johnsen,Jean Jouzel +5 more
TL;DR: In this article, the authors present the complete oxygen isotope record for the Greenland Ice Sheet Project 2 (GISP2) core, drilled 28 km west of the GRIP core, and observe large, rapid climate fluctuations throughout the last glacial period.
2K
Sea-level fluctuations during the last glacial cycle
Mark Siddall,Eelco J. Rohling,Ahuva Almogi-Labin,Ch. Hemleben,Dieter Meischner,I. Schmelzer,David A. Smeed +6 more
TL;DR: A hydraulic model of the water exchange between the Red Sea and the world ocean is used to derive the sill depth—and hence global sea level—over the past 470,000 years, finding that sea-level changes of up to 35 m occurred, coincident with abrupt changes in climate.
1.6K
Related Papers (5)
[...]
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
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