South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event

One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported...

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Main Authors: K. Ljung, S. Björck, H. Renssen, D. Hammarlund
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2008
Subjects:
Online Access:https://doaj.org/article/98d1f9d624c44655a9e3a25008ea7b95
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spelling ftdoajarticles:oai:doaj.org/article:98d1f9d624c44655a9e3a25008ea7b95 2023-05-15T16:40:53+02:00 South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event K. Ljung S. Björck H. Renssen D. Hammarlund 2008-02-01T00:00:00Z https://doaj.org/article/98d1f9d624c44655a9e3a25008ea7b95 EN eng Copernicus Publications http://www.clim-past.net/4/35/2008/cp-4-35-2008.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 https://doaj.org/article/98d1f9d624c44655a9e3a25008ea7b95 Climate of the Past, Vol 4, Iss 1, Pp 35-45 (2008) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2008 ftdoajarticles 2022-12-31T13:47:14Z One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported from sites around the North Atlantic, but an increasing number of observations imply a more wide-spread occurrence. Palaeoclimate archives from the Southern Hemisphere have hitherto failed to uncover a distinct climatic anomaly associated with the 8.2 kyr event. Here we present a lake sediment record from Nightingale Island in the central South Atlantic showing enhanced precipitation between 8275 and 8025 cal. yrs BP, most likely as a consequence of increased sea surface temperature (SST). We show that this is consistent with climate model projections of a warming of the South Atlantic in response to reduced north-ward energy transport during the 8.2 kyr event. Article in Journal/Newspaper Ice Sheet North Atlantic Directory of Open Access Journals: DOAJ Articles
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Environmental pollution
TD172-193.5
Environmental protection
TD169-171.8
Environmental sciences
GE1-350
spellingShingle Environmental pollution
TD172-193.5
Environmental protection
TD169-171.8
Environmental sciences
GE1-350
K. Ljung
S. Björck
H. Renssen
D. Hammarlund
South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
topic_facet Environmental pollution
TD172-193.5
Environmental protection
TD169-171.8
Environmental sciences
GE1-350
description One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported from sites around the North Atlantic, but an increasing number of observations imply a more wide-spread occurrence. Palaeoclimate archives from the Southern Hemisphere have hitherto failed to uncover a distinct climatic anomaly associated with the 8.2 kyr event. Here we present a lake sediment record from Nightingale Island in the central South Atlantic showing enhanced precipitation between 8275 and 8025 cal. yrs BP, most likely as a consequence of increased sea surface temperature (SST). We show that this is consistent with climate model projections of a warming of the South Atlantic in response to reduced north-ward energy transport during the 8.2 kyr event.
format Article in Journal/Newspaper
author K. Ljung
S. Björck
H. Renssen
D. Hammarlund
author_facet K. Ljung
S. Björck
H. Renssen
D. Hammarlund
author_sort K. Ljung
title South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
title_short South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
title_full South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
title_fullStr South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
title_full_unstemmed South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event
title_sort south atlantic island record reveals a south atlantic response to the 8.2 kyr event
publisher Copernicus Publications
publishDate 2008
url https://doaj.org/article/98d1f9d624c44655a9e3a25008ea7b95
genre Ice Sheet
North Atlantic
genre_facet Ice Sheet
North Atlantic
op_source Climate of the Past, Vol 4, Iss 1, Pp 35-45 (2008)
op_relation http://www.clim-past.net/4/35/2008/cp-4-35-2008.pdf
https://doaj.org/toc/1814-9324
https://doaj.org/toc/1814-9332
1814-9324
1814-9332
https://doaj.org/article/98d1f9d624c44655a9e3a25008ea7b95
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