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  North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems

Brahim, Y. A., Wassenburg, J. A., Sha, L., Cruz, F. W., Deininger, M., Sifeddine, A., et al. (2019). North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems. Geophysical Research Letters, 46(13), 7614-7623. doi:10.1029/2019GL082405.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-CA80-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-CA81-6
Genre: Journal Article

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 Creators:
Brahim, Y. Ait1, Author
Wassenburg, J. A.2, Author              
Sha, L.1, Author
Cruz, F. W.1, Author
Deininger, M.1, Author
Sifeddine, A.1, Author
Bouchaou, L.1, Author
Spoetl, Christoph1, Author
Edwards, R. L.1, Author
Cheng, H.1, Author
Affiliations:
1external, ou_persistent22              
2Climate Geochemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_2237635              

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 Abstract: In this study, we present a Holocene rainfall index based on three high‐resolution speleothemrecords from the Western Mediterranean, a region under the influence of the westerly winds belt modulatedby the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the NorthAtlantic ice‐rafting events were likely associated with negative NAO‐like conditions during the EarlyHolocene and the Late Holocene. However, our data reveal that this is not clearly the case for themid‐Holocene ice‐rafting events, during which we also show evidence of positive NAO‐like patterns fromother paleo‐oceanographic and paleo‐atmospheric data. Hence, contradictory mechanisms involvingprolonged periods of both north and south shifts of the westerly winds belt (resembling positive and negativeNAO‐like patterns) might at least partially trigger or amplify the ice‐rafting events and the slowdownof the Atlantic Meridional Overturning Circulation..

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000476960100062
DOI: 10.1029/2019GL082405
 Degree: -

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Title: Geophysical Research Letters
  Abbreviation : GRL
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union / Wiley
Pages: - Volume / Issue: 46 (13) Sequence Number: - Start / End Page: 7614 - 7623 Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217