Journal ArticleDOI
Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores
Renato Spahni,Renato Spahni,Jérôme Chappellaz,Jérôme Chappellaz,Thomas F. Stocker,Thomas F. Stocker,L. Loulergue,L. Loulergue,Gregor Hausammann,Gregor Hausammann,Kenji Kawamura,Kenji Kawamura,Jacqueline Flückiger,Jacqueline Flückiger,Jakob Schwander,Jakob Schwander,Dominique Raynaud,Dominique Raynaud,Valérie Masson-Delmotte,Valérie Masson-Delmotte,Jean Jouzel,Jean Jouzel +21 more
TLDR
A combined record of CH4 measured along the Dome C and the Vostok ice cores demonstrates, within the resolution of the authors' measurements, that preindustrial concentrations over Antarctica have not exceeded 773 ± 15 ppbv during the past 650,000 years.Abstract:
The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH4) and nitrous oxide (N2O) back to 650,000 years before the present. A combined record of CH4 measured along the Dome C and the Vostok ice cores demonstrates, within the resolution of our measurements, that preindustrial concentrations over Antarctica have not exceeded 773 ± 15 ppbv (parts per billion by volume) during the past 650,000 years. Before 420,000 years ago, when interglacials were cooler, maximum CH4 concentrations were only about 600 ppbv, similar to lower Holocene values. In contrast, the N2O record shows maximum concentrations of 278 ± 7 ppbv, slightly higher than early Holocene values.read more
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Book Chapter
Changes in Atmospheric Constituents and in Radiative Forcing
Piers M. Forster,Venkatachalam Ramaswamy,Paulo Artaxo,Terje Koren Berntsen,Richard Betts,David W. Fahey,Jim Haywood,Judith Lean,David C. Lowe,Gunnar Myhre,John Nganga,Ronald G. Prinn,Graciela B. Raga,Michael Schulz,Rob van Dorland,Greg Bodeker,Oliver Boucher,William D. Collins,T.J. Conway,Edward J. Dlugokencky,James W. Elkins,David Etheridge,P. Foukal,Paul J. Fraser,Marvyn Geller,Fortunat Joos,Charles D. Keeling,Stefan Kinne,K. Lassey,Ulrike Lohmann,Andrew C. Manning,S. A. Montzka,David E. Oram,K. O'Shaughnessy,S. Piper,Gian-Kasper Plattner,Michael Ponater,Navin Ramankutty,G. Reid,David Rind,Karen H. Rosenlof,Robert Sausen,D. Schwarzkopf,S.K. Solanki,Garry Stenchikov,N. Stuber,Toshihiko Takemura,Christiane Textor,R. Wang,Ray F. Weiss,T. Whorf +50 more
Journal Article
Couplings between changes in the climate system and biogeochemistry
Surabi Menon,Kenneth L. Denman,Guy Brasseur,Amnat Chidthaisong,Philippe Ciais,Peter M. Cox,Robert E. Dickinson,Didier Hauglustaine,Christoph Heinze,Elisabeth A. Holland,Daniel J. Jacob,Ulrike Lohmann,S. Ramachandran,Pedro Leite da Silva Dias,Steven C. Wofsy,Xiaoye Zhang +15 more
TL;DR: Denman et al. as discussed by the authors presented the Couplings between changes in the climate system and biogeochemistry Coordinating Lead Authors: Kenneth L. Denman (Canada), Guy Brasseur (USA, Germany), Amnat Chidthaisong (Thailand), Philippe Ciais (France), Peter M. Cox (UK), Robert E. Austin (USA), D.B. Wofsy (USA) and Xiaoye Zhang (China).
Journal ArticleDOI
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
TL;DR: It is suggested that the interplay between obliquity and precession accounts for the variable intensity of interglacial periods in ice core records.
Orbital and millenial antarctic climate variability over the last 800 000 years
Jean Jouzel,Jean-Louis Tison +1 more
TL;DR: A high-resolution deuterium profile is 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.
Journal ArticleDOI
Mid- to Late Holocene climate change: an overview
Heinz Wanner,Jürg Beer,Jonathan Butikofer,Thomas J. Crowley,Ulrich Cubasch,Jacqueline Flückiger,Hugues Goosse,Martin Grosjean,Fortunat Joos,Jed O. Kaplan,Marcel Küttel,Simon A. Müller,I. Colin Prentice,Olga Solomina,Thomas F. Stocker,Pavel E. Tarasov,Mayke Wagner,Martin Widmann +17 more
TL;DR: The authors used selected proxy-based reconstructions of different climate variables, together with state-of-the-art time series of natural forcings (orbital variations, solar activity variations, large tropical volcanic eruptions, land cover and greenhouse gases), underpinned by results from GCMs and Earth System Models of Intermediate Complexity (EMICs), to establish a comprehensive explanatory framework for climate changes from the mid-Holocene (MH) to pre-industrial time.
References
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Journal ArticleDOI
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Journal ArticleDOI
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Journal ArticleDOI
glacial-interglacial Co2 change : the iron hypothesis
TL;DR: In this paper, the authors present a hypothesis that new productivity in today's southern ocean is limited by iron deficiency, and hence the phytoplankton are unable to take advantage of the excess surface nitrate/phosphate that, if used, could result in total southern ocean new production of 2−3 × 1015 g C yr−1.
Journal ArticleDOI
The Anthropogenic Greenhouse Era Began Thousands of Years Ago
TL;DR: The anthropogenic era is generally thought to have begun 150 to 200 years ago, when the industrial revolution began producing CO2 and CH4 at rates sufficient to alter their compositions in the atmosphere as discussed by the authors.
Journal ArticleDOI
Atmospheric CO2 Concentrations over the Last Glacial Termination
Eric Monnin,Andreas Indermühle,A. Dällenbach,Jacqueline Flückiger,Bernhard Stauffer,Thomas F. Stocker,Dominique Raynaud,Jean-Marc Barnola +7 more
TL;DR: The similarity of changes in CO2 concentration and variations of atmospheric methane concentration suggests that processes in the tropics and in the Northern Hemisphere, where the main sources for methane are located, also had substantial effects on atmospheric CO2 concentrations.
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