Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440
We compare six high-resolution Holocene, sediment cores along a S-N transect on the Norwegian-Svalbard continental margin from ca 60°N to 77.4°N, northern North Atlantic. Planktonic foraminifera in the cores were investigated to show the changes in upper surface and subsurface water mass distributio...
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Format: | Article in Journal/Newspaper |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2007
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Online Access: | https://dx.doi.org/10.1594/pangaea.786092 https://doi.pangaea.de/10.1594/PANGAEA.786092 |
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ftdatacite:10.1594/pangaea.786092 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
ipy International Polar Year 2007-2008 IPY |
spellingShingle |
ipy International Polar Year 2007-2008 IPY Hald, Morten Andersson, Carin Ebbesen, Hanne Jansen, Eystein Klitgaard-Kristensen, Dorthe Risebrobakken, Bjørg Salomonsen, Gaute R Sarnthein, Michael Sejrup, Hans Petter Telford, Richard J Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
topic_facet |
ipy International Polar Year 2007-2008 IPY |
description |
We compare six high-resolution Holocene, sediment cores along a S-N transect on the Norwegian-Svalbard continental margin from ca 60°N to 77.4°N, northern North Atlantic. Planktonic foraminifera in the cores were investigated to show the changes in upper surface and subsurface water mass distribution and properties, including summer sea-surface temperatures (SST). The cores are located below the axis of the Norwegian Current and the West Spitsbergen Current, which today transport warm Atlantic Water to the Arctic. Sediment accumulation rates are generally high at all the core sites, allowing for a temporal resolution of 10-102 years. SST is reconstructed using different types of transfer functions, resulting in very similar SST trends, with deviations of no more than +- 1.0/1.5 °C. A transfer function based on the maximum likelihood statistical approach is found to be most relevant. The reconstruction documents an abrupt change in planktonic foraminiferal faunal composition and an associated warming at the Younger Dryas-Preboreal transition. The earliest part of the Holocene was characterized by large temperature variability, including the Preboreal Oscillations and the 8.2 k event. In general, the early Holocene was characterized by SSTs similar to those of today in the south and warmer than today in the north, and a smaller S-N temperature gradient (0.23 °C/°N) compared to the present temperature gradient (0.46 °C/°N). The southern proxy records (60-69°N) were more strongly influenced by slightly cooler subsurface water probably due to the seasonality of the orbital forcing and increased stratification due to freshening. The northern records (72-77.4°N) display a millennial-scale change associated with reduced insolation and a gradual weakening of the North Atlantic thermohaline circulation (THC). The observed northwards amplification of the early Holocene warming is comparable to the pattern of recent global warming and future climate modelling, which predicts greater warming at higher latitudes. The overall trend during mid and late Holocene was a cooling in the north, stable or weak warming in the south, and a maximum S-N SST gradient of ca 0.7 °C/°N at 5000 cal. years BP. Superimposed on this trend were several abrupt temperature shifts. Four of these shifts, dated to 9000-8000, 5500-3000 and 1000 and ~400 cal. years BP, appear to be global, as they correlate with periods of global climate change. In general, there is a good correlation between the northern North Atlantic temperature records and climate records from Norway and Svalbard. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Article in Journal/Newspaper |
author |
Hald, Morten Andersson, Carin Ebbesen, Hanne Jansen, Eystein Klitgaard-Kristensen, Dorthe Risebrobakken, Bjørg Salomonsen, Gaute R Sarnthein, Michael Sejrup, Hans Petter Telford, Richard J |
author_facet |
Hald, Morten Andersson, Carin Ebbesen, Hanne Jansen, Eystein Klitgaard-Kristensen, Dorthe Risebrobakken, Bjørg Salomonsen, Gaute R Sarnthein, Michael Sejrup, Hans Petter Telford, Richard J |
author_sort |
Hald, Morten |
title |
Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
title_short |
Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
title_full |
Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
title_fullStr |
Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
title_full_unstemmed |
Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 |
title_sort |
foraminifer counts in core jm01-1199, and review of radiocarbon ages in the norwegian-barents sea-svalbard margin, supplement to: hald, morten; andersson, carin; ebbesen, hanne; jansen, eystein; klitgaard-kristensen, dorthe; risebrobakken, bjørg; salomonsen, gaute r; sarnthein, michael; sejrup, hans petter; telford, richard j (2007): variations in temperature and extent of atlantic water in the northern north atlantic during the holocene. quaternary science reviews, 26(25-28), 3423-3440 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2007 |
url |
https://dx.doi.org/10.1594/pangaea.786092 https://doi.pangaea.de/10.1594/PANGAEA.786092 |
long_lat |
ENVELOPE(-159.667,-159.667,-86.333,-86.333) |
geographic |
Arctic Barents Sea Kristensen Norway Svalbard |
geographic_facet |
Arctic Barents Sea Kristensen Norway Svalbard |
genre |
Arctic Barents Sea Climate change Foraminifera* Global warming International Polar Year IPY North Atlantic North atlantic Thermohaline circulation Planktonic foraminifera Svalbard Svalbard margin Spitsbergen |
genre_facet |
Arctic Barents Sea Climate change Foraminifera* Global warming International Polar Year IPY North Atlantic North atlantic Thermohaline circulation Planktonic foraminifera Svalbard Svalbard margin Spitsbergen |
op_relation |
https://dx.doi.org/10.1016/j.quascirev.2007.10.005 |
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.786092 https://doi.org/10.1016/j.quascirev.2007.10.005 |
_version_ |
1766349989242470400 |
spelling |
ftdatacite:10.1594/pangaea.786092 2023-05-15T15:19:47+02:00 Foraminifer counts in core JM01-1199, and review of radiocarbon ages in the Norwegian-Barents Sea-Svalbard margin, supplement to: Hald, Morten; Andersson, Carin; Ebbesen, Hanne; Jansen, Eystein; Klitgaard-Kristensen, Dorthe; Risebrobakken, Bjørg; Salomonsen, Gaute R; Sarnthein, Michael; Sejrup, Hans Petter; Telford, Richard J (2007): Variations in temperature and extent of Atlantic Water in the northern North Atlantic during the Holocene. Quaternary Science Reviews, 26(25-28), 3423-3440 Hald, Morten Andersson, Carin Ebbesen, Hanne Jansen, Eystein Klitgaard-Kristensen, Dorthe Risebrobakken, Bjørg Salomonsen, Gaute R Sarnthein, Michael Sejrup, Hans Petter Telford, Richard J 2007 application/zip https://dx.doi.org/10.1594/pangaea.786092 https://doi.pangaea.de/10.1594/PANGAEA.786092 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.quascirev.2007.10.005 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY ipy International Polar Year 2007-2008 IPY Collection article Supplementary Collection of Datasets 2007 ftdatacite https://doi.org/10.1594/pangaea.786092 https://doi.org/10.1016/j.quascirev.2007.10.005 2021-11-05T12:55:41Z We compare six high-resolution Holocene, sediment cores along a S-N transect on the Norwegian-Svalbard continental margin from ca 60°N to 77.4°N, northern North Atlantic. Planktonic foraminifera in the cores were investigated to show the changes in upper surface and subsurface water mass distribution and properties, including summer sea-surface temperatures (SST). The cores are located below the axis of the Norwegian Current and the West Spitsbergen Current, which today transport warm Atlantic Water to the Arctic. Sediment accumulation rates are generally high at all the core sites, allowing for a temporal resolution of 10-102 years. SST is reconstructed using different types of transfer functions, resulting in very similar SST trends, with deviations of no more than +- 1.0/1.5 °C. A transfer function based on the maximum likelihood statistical approach is found to be most relevant. The reconstruction documents an abrupt change in planktonic foraminiferal faunal composition and an associated warming at the Younger Dryas-Preboreal transition. The earliest part of the Holocene was characterized by large temperature variability, including the Preboreal Oscillations and the 8.2 k event. In general, the early Holocene was characterized by SSTs similar to those of today in the south and warmer than today in the north, and a smaller S-N temperature gradient (0.23 °C/°N) compared to the present temperature gradient (0.46 °C/°N). The southern proxy records (60-69°N) were more strongly influenced by slightly cooler subsurface water probably due to the seasonality of the orbital forcing and increased stratification due to freshening. The northern records (72-77.4°N) display a millennial-scale change associated with reduced insolation and a gradual weakening of the North Atlantic thermohaline circulation (THC). The observed northwards amplification of the early Holocene warming is comparable to the pattern of recent global warming and future climate modelling, which predicts greater warming at higher latitudes. The overall trend during mid and late Holocene was a cooling in the north, stable or weak warming in the south, and a maximum S-N SST gradient of ca 0.7 °C/°N at 5000 cal. years BP. Superimposed on this trend were several abrupt temperature shifts. Four of these shifts, dated to 9000-8000, 5500-3000 and 1000 and ~400 cal. years BP, appear to be global, as they correlate with periods of global climate change. In general, there is a good correlation between the northern North Atlantic temperature records and climate records from Norway and Svalbard. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Article in Journal/Newspaper Arctic Barents Sea Climate change Foraminifera* Global warming International Polar Year IPY North Atlantic North atlantic Thermohaline circulation Planktonic foraminifera Svalbard Svalbard margin Spitsbergen DataCite Metadata Store (German National Library of Science and Technology) Arctic Barents Sea Kristensen ENVELOPE(-159.667,-159.667,-86.333,-86.333) Norway Svalbard |