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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Changing color of Chinese loess: Geochemical constraint and paleoclimatic significance
TL;DR: In this paper, two loess-paleosol sequences on the central Chinese Loess Plateau were investigated to understand spatial and temporal variations in the soil color (e.g., lightness and redness) and factors that control those variations.
Journal ArticleDOI
Interhemispheric coupling, the West Antarctic Ice Sheet and warm Antarctic interglacials
Philip B. Holden,Neil R. Edwards,Eric W. Wolff,Nicola Lang,Joy S. Singarayer,Paul J. Valdes,Thomas F. Stocker +6 more
TL;DR: In this article, the impact of deglacial meltwater on the Atlantic Meridional Overturning Circulation (AMOC) and Antarctic temperature was investigated using the Intermediate Complexity model GENIE-1 which demonstrated that meltwater forcing generates transient southern warming that is consistent with the timing of WPTs, but is not sufficient to reproduce the magnitude of observed warmth.
Journal ArticleDOI
Precise dating of abrupt shifts in the Asian Monsoon during the last deglaciation based on stalagmite data from Yamen Cave, Guizhou Province, China
Yan Yang,Dao Xian Yuan,Hai Cheng,Mei Liang Zhang,Jia Ming Qin,Yu Shi Lin,Xiaoyan Zhu,R. Lawrence Edwards +7 more
TL;DR: Based on 33 U/Th dates and 1020 oxygen isotopic data from stalagmite Y1 from Yamen Cave, Guizhou Province, China, a record of the Asian Summer Monsoon (ASM) was established as mentioned in this paper.
Journal ArticleDOI
On the timing of the East Asian summer monsoon maximum during the Holocene—Does the speleothem oxygen isotope record reflect monsoon rainfall variability?
Jianhui Chen,Zhiguo Rao,Jianbao Liu,Wei Huang,Song Feng,Guanghui Dong,Yu Hu,Qinghai Xu,Fahu Chen +8 more
TL;DR: In this paper, a critical review of the climatic significance of the speleothem δ 18Oc record from China is presented, which indicates that precipitation in northern China is an appropriate index of EASM intensity, the variation of which clearly indicates a mid-Holocene monsoon maximum.
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.