Journal ArticleDOI
A penultimate glacial monsoon record from Hulu Cave and two-phase glacial terminations
Hai Cheng,R. Lawrence Edwards,Yongjin Wang,Xinggong Kong,Yanfang Ming,Megan J. Kelly,Xianfeng Wang,Christina D. Gallup,Weiguo Liu +8 more
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TLDR
Oxygen isotope records of three stalagmites from Hulu Cave, China, extend the previous high-resolution absolute-dated Hulu Asian Monsoon record from the last to the penultimate glacial and deglacial periods as discussed by the authors.Abstract:
Oxygen isotope records of three stalagmites from Hulu Cave, China, extend the previous high-resolution absolute-dated Hulu Asian Monsoon record from the last to the penultimate glacial and deglacial periods. The penultimate glacial monsoon broadly follows orbitally induced insolation variations and is punctuated by at least 16 millennial-scale events. We confirm a Weak Monsoon Interval between 135.5 ± 1.0 and 129.0 ± 1.0 ka, prior to the abrupt increase in monsoon intensity at Asian Monsoon Termination II. Based on correlations with both marine ice-rafted debris and atmospheric CH 4 records, we demonstrate that most of marine Termination II, the full rise in Antarctic temperature and atmospheric CO 2 , and much of the rise in CH 4 occurred within the Weak Monsoon Interval, when the high northern latitudes were probably cold. From these relationships and similar relationships observed for Termination I, we identify a two-phase glacial termination process that was probably driven by orbital forcing in both hemispheres, affecting the atmospheric hydrological cycle, and combined with ice sheet dynamics.read more
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Onset and termination of Heinrich Stadial 4 and the underlying climate dynamics
Hai Cheng,Hai Cheng,Yao Xu,Xiyu Dong,Jingyao Zhao,Hanying Li,Jonathan Baker,Ashish Sinha,Christoph Spötl,Haiwei Zhang,Wenjing Du,Baoyun Zong,Xue Jia,Gayatri Kathayat,Dianbing Liu,Yanjun Cai,Xianfeng Wang,Nicolás Misailidis Stríkis,Francisco W. Cruz,Augusto S. Auler,Anil K. Gupta,Raj K. Singh,Sonu Jaglan,Som Dutt,Zhengyu Liu,R. Lawrence Edwards +25 more
TL;DR: In this paper, the authors present improved constraints on timings of Heinrich/Chinese/South American Stadial 4 onset and termination at sub-centennial precision based on speleothem records.
Journal ArticleDOI
Response to Comments by Daniel Gebregiorgis et al. “A Brief Commentary on the Interpretation of Chinese Speleothem δ18O Records as Summer Monsoon Intensity Tracers”. Quaternary 2020, 3, 7
Abstract: We would like to thank Gebregiorgis et al [...]
Journal ArticleDOI
A Last Interglacial speleothem record from the Sieben Hengste cave system (Switzerland): Implications for alpine paleovegetation
Marc Luetscher,Gina E. Moseley,Daniela Festi,Florian Hof,R. Lawrence Edwards,Christoph Spötl +5 more
TL;DR: A precisely dated speleothem isotope record from the Sieben Hengste cave system, Switzerland, reveals a Last Interglacial (LIG) climate optimum centred at 128.1 ± 1.2 ka as mentioned in this paper.
Dissertation
Dynamics of Pleistocene climate change in the South Atlantic Ocean
TL;DR: In this article, the isotopic composition of sub-surface dweller Globigerinoides ruber sensu lato, and thermocline Globorotalia truncatulinoides sinistral was analyzed, spanning the last five Pleistocene glacial-interglacial cycles.
Journal ArticleDOI
A data–model approach to interpreting speleothem oxygen isotope records from monsoon regions
Sarah E. Parker,Sandy P. Harrison,Laia Comas-Bru,Nikita Kaushal,Allegra N. LeGrande,Martin Werner +5 more
TL;DR: The authors analyzed >150 speleothem records of the SISAL database to investigate the specific climatic factors causing these regional trends and found that changes are primarily driven by global shifts in temperature and regional changes in precipitation.
References
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Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica
J. R. Petit,Jean Jouzel,Dominique Raynaud,J. M. Barnola,I. Basile,Michael L. Bender,Jérôme Chappellaz,Michael Davis,Gilles Delaygue,Marc Delmotte,V. M. Kotlyakov,Michel Legrand,Vladimir Ya. Lipenkov,C. Lorius,L. Pepin,Catherine Ritz,Eric S. Saltzman,Michel Stievenard +17 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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
A High-Resolution Absolute-Dated Late Pleistocene Monsoon Record from Hulu Cave, China
Yongjin Wang,Yongjin Wang,Hai Cheng,Richard Lawrence Edwards,Zhisheng An,Jiangying Wu,Chuan-Chou Shen,Jeffrey A. Dorale +7 more
TL;DR: The record links North Atlantic climate with the meridional transport of heat and moisture from the warmest part of the ocean where the summer East Asian Monsoon originates and generally agrees with the timing of temperature changes from the Greenland Ice Sheet Project Two (GISP2).
Journal ArticleDOI
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.