Potential links between surging ice sheets, circulation changes, and the Dansgaard‐Oeschger Cycles in the Irminger Sea, 60–18 Kyr

Kreveld, Shirley van; Sarnthein, Michael; Erlenkeuser, Helmut; Grootes, P. M.; Jung, Simon; Nadeau, Marie‐Josée; Pflaumann, Uwe; Voelker, Antje H L

doi:10.1029/1999pa000464

Cited by 323 publications

(306 citation statements)

References 80 publications

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“…During Dansgaard/Oeschger (D/O) stadial (cold) intervals northern hemisphere climate was significantly cooler (5 to 10°C), and dryer [4][5][6][7][8]. In North Atlantic marine sediment cores 'Heinrich layers' of large amounts of ice rafted debris (IRD) resulting from Northern Hemisphere ice sheet collapse, correlate with four severe D/O stadials in MIS 3 [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic

Hoogakker

McCave

Vautravers

2007

Earth and Planetary Science Letters

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Section: Introductionmentioning

confidence: 99%

Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic

Hoogakker

McCave

Vautravers

2007

Earth and Planetary Science Letters

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“…At the Younger Dryas, but also following the cold phases of the cyclic Dansgaard-Oeschger events during the last glacial period, it is becoming clearer that relatively warm climates, and substantial NADW formation, was resumed over a few decades to a century (van Kreveld et al, 2000). This has been ascribed to the injection of salt into the North Atlantic through the extension of seasonal sea-ice formation well into mid latitudes.…”

Section: Thermohaline Catastrophesmentioning

confidence: 99%

“…Arrows indicate the direction in which the freshwater forcing is changing and point 'f' shows a state very different to today's, but with identical freshwater forcing. (After Rahmstorf (1995), with permission from Nature Publishing Group, www.nature.com/nature) (van Kreveld et al, 2000). This is also thought to have occurred more recently, during deglaciation and the Younger Dryas (Stocker and Marchal, 2000;Bauch et al, 2001;Fagel et al, 2001).…”

Section: Thermohaline Catastrophesmentioning

confidence: 99%

The role of the oceans in climate

Bigg

Jickells

Liss

et al. 2003

Intl Journal of Climatology

126

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The ocean is increasingly seen as a vital component of the climate system. It exchanges with the atmosphere large quantities of heat, water, gases, particles and momentum. It is an important part of the global redistribution of heat from tropics to polar regions keeping our planet habitable, particularly equatorward of about 30°. In this article we review recent work examining the role of the oceans in climate, focusing on research in the Third Assessment Report of the IPCC and later. We discuss the general nature of oceanic climate variability and the large role played by stochastic variability in the interaction of the atmosphere and ocean. We consider the growing evidence for biogeochemical interaction of climatic significance between ocean and atmosphere. Air-sea exchange of several radiatively important gases, in particular CO 2 , is a major mechanism for altering their atmospheric concentrations. Some more reactive gases, such as dimethyl sulphide, can alter cloud formation and hence albedo. Particulates containing iron and originating over land can alter ocean primary productivity and hence feedbacks to other biogeochemical exchanges. We show that not only the tropical Pacific Ocean basin can exhibit coupled ocean-atmosphere interaction, but also the tropical Atlantic and Indian Oceans. Longer lived interactions in the North Pacific and Southern Ocean (the circumpolar wave) are also reviewed. The role of the thermohaline circulation in long-term and abrupt climatic change is examined, with the freshwater budget of the ocean being a key factor for the degree, and longevity, of change. The potential for the Mediterranean outflow to contribute to abrupt change is raised. We end by examining the probability of thermohaline changes in a future of global warming.

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“…Great strides have recently been made towards generating 14 C datasets beyond 25 ka BP with U/Th measured cal ages (Beck et al 2001;Kitagawa and van der Plicht 2000;Schramm et al 2000;Yokoyama et al 2000) and with matches to the ice core timescales (van Kreveld et al 2000;Voelker et al 2000). However, these records are not sufficiently coherent that we can recommend a single calibration for this time period.…”

Section: Beyond 25 Ka Bpmentioning

confidence: 99%

Preliminary Report of the First Workshop of the Intcal04 Radiocarbon Calibration/Comparison Working Group

et al. 2002

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ABSTRACT. The first meeting of the IntCal04 working group took place at Queen's University Belfast from April 15 to 17, 2002. The participants are listed as co-authors of this report. The meeting considered criteria for the acceptance of data into the next official calibration dataset, the importance of including reliable estimates of uncertainty in both the radiocarbon ages and the cal ages, and potential methods for combining datasets. This preliminary report summarizes the criteria that were discussed, but does not yet give specific recommendations for inclusion or exclusion of individual datasets.

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Potential links between surging ice sheets, circulation changes, and the Dansgaard‐Oeschger Cycles in the Irminger Sea, 60–18 Kyr

Cited by 323 publications

References 80 publications

Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic

Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic

The role of the oceans in climate

Preliminary Report of the First Workshop of the Intcal04 Radiocarbon Calibration/Comparison Working Group

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