globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.01.007
Scopus记录号: 2-s2.0-85009877405
论文题名:
Exploring the oxygen isotope fingerprint of Dansgaard-Oeschger variability and Heinrich events
作者: Bagniewski W.; Meissner K.J.; Menviel L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 159
起始页码: 1
结束页码: 14
语种: 英语
英文关键词: AMOC ; Dansgaard-Oeschger cycles ; Heinrich events ; MIS3 ; Model-data comparison ; δ18O
Scopus关键词: Climate change ; Climate models ; Isotopes ; Oxygen ; AMOC ; Dansgaard-Oeschger cycles ; Heinrich Events ; MIS3 ; Model-data comparisons ; Oceanography ; climate modeling ; Dansgaard-Oeschger cycle ; Heinrich event ; ice core ; marine isotope stage ; meltwater ; meridional circulation ; oxygen isotope ; sediment core ; simulation
英文摘要: We present the first transient simulations of Marine Isotope Stage 3 (MIS 3) performed with an oxygen isotope-enabled climate model. Our simulations span several Dansgaard-Oeschger cycles and three Heinrich stadials and are directly compared with oxygen isotope records from 13 sediment and 2 ice cores. Our results are consistent with a 30–50% weakening of the Atlantic Meridional Overturning Circulation during Dansgaard-Oeschger stadials and a complete shutdown during Heinrich stadials. We find that the simulated δ18O anomalies differ significantly between Heinrich stadials and non-Heinrich stadials. This difference is mainly due to different responses in ocean circulation, and therefore climate, impacting oceanic δ18O, while the volume of 18O-depleted meltwater plays a secondary role. © 2017
资助项目: We thank an anonymous reviewer and the Editor, Henning A. Bauch, for providing constructive suggestions on an earlier version of this manuscript. This study was funded by the Australian Research Council (DE150100107) and supported by an award under the Merit Allocation Scheme on the NCI National Facility at the Australian National University. WB is grateful for a UNSW Tuition Fee Scholarship. KJM acknowledges support from UNSW Gold- and Silverstar awards.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59301
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作者单位: Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence for Climate System Science, Australia; PANGEA Research Centre, University of New South Wales, Sydney, NSW, Australia

Recommended Citation:
Bagniewski W.,Meissner K.J.,Menviel L.. Exploring the oxygen isotope fingerprint of Dansgaard-Oeschger variability and Heinrich events[J]. Quaternary Science Reviews,2017-01-01,159
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