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 (sSST Mg/Ca ) fluctuate markedly during the earliest Holocene at ~11.7 and 10.5...
Published in: | The Holocene |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2013
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1177/0959683613515730 http://journals.sagepub.com/doi/pdf/10.1177/0959683613515730 http://journals.sagepub.com/doi/full-xml/10.1177/0959683613515730 |
id |
crsagepubl:10.1177/0959683613515730 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.1177/0959683613515730 2024-05-19T07:35:46+00:00 Sub sea surface temperatures in the Polar North Atlantic during the Holocene: Planktic foraminiferal Mg/Ca temperature reconstructions Aagaard-Sørensen, Steffen Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred 2013 http://dx.doi.org/10.1177/0959683613515730 http://journals.sagepub.com/doi/pdf/10.1177/0959683613515730 http://journals.sagepub.com/doi/full-xml/10.1177/0959683613515730 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 24, issue 1, page 93-103 ISSN 0959-6836 1477-0911 journal-article 2013 crsagepubl https://doi.org/10.1177/0959683613515730 2024-05-02T09:38:38Z 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 (sSST Mg/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 sSST Mg/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 sSST Mg/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 sSST Mg/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 SAGE Publications The Holocene 24 1 93 103 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
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 (sSST Mg/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 sSST Mg/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 sSST Mg/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 sSST Mg/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 |
Aagaard-Sørensen, Steffen Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred |
spellingShingle |
Aagaard-Sørensen, Steffen 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 |
author_facet |
Aagaard-Sørensen, Steffen Husum, Katrine Hald, Morten Marchitto, Thomas Godtliebsen, Fred |
author_sort |
Aagaard-Sørensen, Steffen |
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 |
http://dx.doi.org/10.1177/0959683613515730 http://journals.sagepub.com/doi/pdf/10.1177/0959683613515730 http://journals.sagepub.com/doi/full-xml/10.1177/0959683613515730 |
genre |
Arctic Foraminifera* Fram Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
genre_facet |
Arctic Foraminifera* Fram Strait Neogloboquadrina pachyderma North Atlantic Sea ice |
op_source |
The Holocene volume 24, issue 1, page 93-103 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
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_ |
1799474778758709248 |