North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems
In this study, we present a Holocene rainfall index based on three high-resolution speleothem records from the Western Mediterranean, a region under the influence of the westerly winds belt modulated by the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the No...
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ftusouthflorida:oai:digitalcommons.usf.edu:kip_articles-8214 2023-12-10T09:51:08+01:00 North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems Brahim, Y. Ait Wassenburg, J. A. Sha, L. Cruz, F. W. 2019-01-01T08:00:00Z https://digitalcommons.usf.edu/kip_articles/7214 https://doi.org/10.1029/2019GL082405 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/kip_articles/7214 doi:10.1029/2019GL082405 https://doi.org/10.1029/2019GL082405 KIP Articles text 2019 ftusouthflorida https://doi.org/10.1029/2019GL082405 2023-11-12T17:28:19Z In this study, we present a Holocene rainfall index based on three high-resolution speleothem records from the Western Mediterranean, a region under the influence of the westerly winds belt modulated by the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the North Atlantic ice-rafting events were likely associated with negative NAO-like conditions during the Early Holocene and the Late Holocene. However, our data reveal that this is not clearly the case for the mid-Holocene ice-rafting events, during which we also show evidence of positive NAO-like patterns from other paleo-oceanographic and paleo-atmospheric data. Hence, contradictory mechanisms involving prolonged periods of both north and south shifts of the westerly winds belt (resembling positive and negative NAO-like patterns) might at least partially trigger or amplify the ice-rafting events and the slowdown of the Atlantic Meridional Overturning Circulation. Text North Atlantic North Atlantic oscillation University of South Florida St. Petersburg: Digital USFSP Geophysical Research Letters 46 13 7614 7623 |
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University of South Florida St. Petersburg: Digital USFSP |
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ftusouthflorida |
language |
unknown |
description |
In this study, we present a Holocene rainfall index based on three high-resolution speleothem records from the Western Mediterranean, a region under the influence of the westerly winds belt modulated by the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the North Atlantic ice-rafting events were likely associated with negative NAO-like conditions during the Early Holocene and the Late Holocene. However, our data reveal that this is not clearly the case for the mid-Holocene ice-rafting events, during which we also show evidence of positive NAO-like patterns from other paleo-oceanographic and paleo-atmospheric data. Hence, contradictory mechanisms involving prolonged periods of both north and south shifts of the westerly winds belt (resembling positive and negative NAO-like patterns) might at least partially trigger or amplify the ice-rafting events and the slowdown of the Atlantic Meridional Overturning Circulation. |
format |
Text |
author |
Brahim, Y. Ait Wassenburg, J. A. Sha, L. Cruz, F. W. |
spellingShingle |
Brahim, Y. Ait Wassenburg, J. A. Sha, L. Cruz, F. W. North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
author_facet |
Brahim, Y. Ait Wassenburg, J. A. Sha, L. Cruz, F. W. |
author_sort |
Brahim, Y. Ait |
title |
North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
title_short |
North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
title_full |
North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
title_fullStr |
North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
title_full_unstemmed |
North Atlantic Ice‐Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems |
title_sort |
north atlantic ice‐rafting, ocean and atmospheric circulation during the holocene: insights from western mediterranean speleothems |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2019 |
url |
https://digitalcommons.usf.edu/kip_articles/7214 https://doi.org/10.1029/2019GL082405 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
KIP Articles |
op_relation |
https://digitalcommons.usf.edu/kip_articles/7214 doi:10.1029/2019GL082405 https://doi.org/10.1029/2019GL082405 |
op_doi |
https://doi.org/10.1029/2019GL082405 |
container_title |
Geophysical Research Letters |
container_volume |
46 |
container_issue |
13 |
container_start_page |
7614 |
op_container_end_page |
7623 |
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1784896556457000960 |