Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163
During the six Heinrich Events of the last 70 ka episodic calving from the circum-Atlantic ice sheets released large numbers of icebergs into the North Atlantic. These icebergs and associated melt-water flux are hypothesized to have led to a shutdown of Atlantic Meridional Overturning Circulation (A...
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ftdatacite:10.1594/pangaea.803658 2023-05-15T17:26:25+02:00 Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 Naafs, Bernhard David A Hefter, Jens Gruetzner, Jens Stein, Ruediger 2013 application/zip https://dx.doi.org/10.1594/pangaea.803658 https://doi.pangaea.de/10.1594/PANGAEA.803658 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2012pa002354 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Collection article Supplementary Collection of Datasets 2013 ftdatacite https://doi.org/10.1594/pangaea.803658 https://doi.org/10.1029/2012pa002354 2021-11-05T12:55:41Z During the six Heinrich Events of the last 70 ka episodic calving from the circum-Atlantic ice sheets released large numbers of icebergs into the North Atlantic. These icebergs and associated melt-water flux are hypothesized to have led to a shutdown of Atlantic Meridional Overturning Circulation (AMOC) and severe cooling in large parts of the Northern Hemisphere. However, due to the limited availability of high-resolution records the magnitude sea surface temperature (SST) changes related to the impact of Heinrich Events on the mid-latitude North Atlantic is poorly constrained. Here we present a record of UK37'-based SSTs derived from sediments of Integrated Ocean Drilling Project (IODP) Site U1313, located at the southern end of the ice-rafted debris (IRD)-belt in the mid-latitude North Atlantic (41°N). We demonstrate that all six Heinrich Events are associated with a rapid warming of surface waters by 2 to 4°C in a few thousand years. The presence of IRD leaves no doubt about the simultaneous timing and correlation between rapid surface water warming and Heinrich Events. We argue that this warming in the mid-latitude North Atlantic is related to a northward expansion of the subtropical gyre during Heinrich Events. As a wide-range of studies demonstrated that in the central IRD-belt Heinrich Events are associated with low SSTs, these results thus identify an anti-phased (seesaw) pattern in SSTs during Heinrich Events between the mid-latitude (warm) and northern North Atlantic (cold). This highlights the complex response of surface water characteristics in the North Atlantic to Heinrich Events that is poorly reproduced by fresh water hosing experiments and challenges the widely accepted view that within the IRD-belt of the North Atlantic Heinrich Events coincide with periods of low SSTs. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
spellingShingle |
Drilling/drill rig Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Naafs, Bernhard David A Hefter, Jens Gruetzner, Jens Stein, Ruediger Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
topic_facet |
Drilling/drill rig Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
description |
During the six Heinrich Events of the last 70 ka episodic calving from the circum-Atlantic ice sheets released large numbers of icebergs into the North Atlantic. These icebergs and associated melt-water flux are hypothesized to have led to a shutdown of Atlantic Meridional Overturning Circulation (AMOC) and severe cooling in large parts of the Northern Hemisphere. However, due to the limited availability of high-resolution records the magnitude sea surface temperature (SST) changes related to the impact of Heinrich Events on the mid-latitude North Atlantic is poorly constrained. Here we present a record of UK37'-based SSTs derived from sediments of Integrated Ocean Drilling Project (IODP) Site U1313, located at the southern end of the ice-rafted debris (IRD)-belt in the mid-latitude North Atlantic (41°N). We demonstrate that all six Heinrich Events are associated with a rapid warming of surface waters by 2 to 4°C in a few thousand years. The presence of IRD leaves no doubt about the simultaneous timing and correlation between rapid surface water warming and Heinrich Events. We argue that this warming in the mid-latitude North Atlantic is related to a northward expansion of the subtropical gyre during Heinrich Events. As a wide-range of studies demonstrated that in the central IRD-belt Heinrich Events are associated with low SSTs, these results thus identify an anti-phased (seesaw) pattern in SSTs during Heinrich Events between the mid-latitude (warm) and northern North Atlantic (cold). This highlights the complex response of surface water characteristics in the North Atlantic to Heinrich Events that is poorly reproduced by fresh water hosing experiments and challenges the widely accepted view that within the IRD-belt of the North Atlantic Heinrich Events coincide with periods of low SSTs. |
format |
Article in Journal/Newspaper |
author |
Naafs, Bernhard David A Hefter, Jens Gruetzner, Jens Stein, Ruediger |
author_facet |
Naafs, Bernhard David A Hefter, Jens Gruetzner, Jens Stein, Ruediger |
author_sort |
Naafs, Bernhard David A |
title |
Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
title_short |
Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
title_full |
Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
title_fullStr |
Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
title_full_unstemmed |
Sea surface temperature estimation for the last 70 ka from IODP Site 306-U1313, supplement to: Naafs, Bernhard David A; Hefter, Jens; Gruetzner, Jens; Stein, Ruediger (2013): Warming of surface waters in the mid-latitude North Atlantic during Heinrich Events. Paleoceanography, 28(1), 153-163 |
title_sort |
sea surface temperature estimation for the last 70 ka from iodp site 306-u1313, supplement to: naafs, bernhard david a; hefter, jens; gruetzner, jens; stein, ruediger (2013): warming of surface waters in the mid-latitude north atlantic during heinrich events. paleoceanography, 28(1), 153-163 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2013 |
url |
https://dx.doi.org/10.1594/pangaea.803658 https://doi.pangaea.de/10.1594/PANGAEA.803658 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1029/2012pa002354 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.803658 https://doi.org/10.1029/2012pa002354 |
_version_ |
1766118082253684736 |