Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions
Holocene sea surface temperatures in the eastern Fram Strait are reconstructed based on Mg/Ca ratios measured on the planktic foraminifer Neogloboquadrina pachyderma (sin). The reconstructed sub sea surface temperatures (sSSTMg/Ca) fluctuate markedly during the earliest Holocene at ~11.7 and 10.5 ky...
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Language: | English |
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2013
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Online Access: | https://hdl.handle.net/10037/5889 https://doi.org/10.1177/0959683613515730 |
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ftunivtroemsoe:oai:munin.uit.no:10037/5889 2023-05-15T14:59:22+02:00 Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions Sørensen, Steffen Aagaard Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred 2013 https://hdl.handle.net/10037/5889 https://doi.org/10.1177/0959683613515730 eng eng Sage Publications The Holocene 24(2013) nr. 1 s. 93-103 FRIDAID 1115825 http://dx.doi.org/10.1177/0959683613515730 0959-6836 https://hdl.handle.net/10037/5889 URN:NBN:no-uit_munin_5588 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Journal article Tidsskriftartikkel Peer reviewed 2013 ftunivtroemsoe https://doi.org/10.1177/0959683613515730 2021-06-25T17:53:47Z Holocene sea surface temperatures in the eastern Fram Strait are reconstructed based on Mg/Ca ratios measured on the planktic foraminifer Neogloboquadrina pachyderma (sin). The reconstructed sub sea surface temperatures (sSSTMg/Ca) fluctuate markedly during the earliest Holocene at ~11.7 and 10.5 kyr BP. This is probably in response to the varying presence of sea-ice and deglacial meltwater. Between ~10.5–7.9 kyr BP, the sSSTMg/Ca values are relatively high (~4°C) and more stable reflecting high insolation and intensified poleward advection of Atlantic Water. After 7.9 kyr BP, the sSSTMg/Ca values decline to an average of ~3°C throughout the mid-Holocene. These changes can be attributed to a combined effect of reduced poleward oceanic heat advection and a decline in insolation as well as a gradually increased influence of eastward migrating Arctic Water. The sSSTMg/Ca values increase and vary between 2.1°C and 5.8°C from ~2.7 kyr BP to the present. This warming is in contrast to declining late-Holocene insolation and may instead be explained by factors including increased advection of oceanic heat to the Arctic region possibly insulated beneath a widening freshwater layer in the northern North Atlantic in conjunction with a shift in calcification season and/or depth habitat of N. pachyderma (sin). Article in Journal/Newspaper Arctic Foraminifera* Fram Strait Neogloboquadrina pachyderma North Atlantic Sea ice University of Tromsø: Munin Open Research Archive Arctic The Holocene 24 1 93 103 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 Sørensen, Steffen Aagaard Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 |
description |
Holocene sea surface temperatures in the eastern Fram Strait are reconstructed based on Mg/Ca ratios measured on the planktic foraminifer Neogloboquadrina pachyderma (sin). The reconstructed sub sea surface temperatures (sSSTMg/Ca) fluctuate markedly during the earliest Holocene at ~11.7 and 10.5 kyr BP. This is probably in response to the varying presence of sea-ice and deglacial meltwater. Between ~10.5–7.9 kyr BP, the sSSTMg/Ca values are relatively high (~4°C) and more stable reflecting high insolation and intensified poleward advection of Atlantic Water. After 7.9 kyr BP, the sSSTMg/Ca values decline to an average of ~3°C throughout the mid-Holocene. These changes can be attributed to a combined effect of reduced poleward oceanic heat advection and a decline in insolation as well as a gradually increased influence of eastward migrating Arctic Water. The sSSTMg/Ca values increase and vary between 2.1°C and 5.8°C from ~2.7 kyr BP to the present. This warming is in contrast to declining late-Holocene insolation and may instead be explained by factors including increased advection of oceanic heat to the Arctic region possibly insulated beneath a widening freshwater layer in the northern North Atlantic in conjunction with a shift in calcification season and/or depth habitat of N. pachyderma (sin). |
format |
Article in Journal/Newspaper |
author |
Sørensen, Steffen Aagaard Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred |
author_facet |
Sørensen, Steffen Aagaard Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred |
author_sort |
Sørensen, Steffen Aagaard |
title |
Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
title_short |
Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
title_full |
Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
title_fullStr |
Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
title_full_unstemmed |
Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions |
title_sort |
sub sea surface temperatures in the polar north atlantic during the holocene: planktic foraminiferal mg/ca temperature reconstructions |
publisher |
Sage Publications |
publishDate |
2013 |
url |
https://hdl.handle.net/10037/5889 https://doi.org/10.1177/0959683613515730 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Foraminifera* Fram Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
genre_facet |
Arctic Foraminifera* Fram Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
op_relation |
The Holocene 24(2013) nr. 1 s. 93-103 FRIDAID 1115825 http://dx.doi.org/10.1177/0959683613515730 0959-6836 https://hdl.handle.net/10037/5889 URN:NBN:no-uit_munin_5588 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1177/0959683613515730 |
container_title |
The Holocene |
container_volume |
24 |
container_issue |
1 |
container_start_page |
93 |
op_container_end_page |
103 |
_version_ |
1766331481064472576 |