Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic
Sea surface temperature (SST) are used to infer past changes in the state of the climate system. Here we use a combination of newly generated and published organic paleothermometer records, together with novel high-resolution benthic foraminiferal δ18 24 O stratigraphy, from four sites in the mid-la...
Published in: | Paleoceanography and Paleoclimatology |
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2020
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Online Access: | https://hdl.handle.net/1983/75738850-5a86-4367-b728-d22f9a901834 https://research-information.bris.ac.uk/en/publications/75738850-5a86-4367-b728-d22f9a901834 https://doi.org/10.1029/2020PA003905 https://research-information.bris.ac.uk/ws/files/231776426/Gradient_paper_final_3_.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/75738850-5a86-4367-b728-d22f9a901834 2024-01-28T10:07:23+01:00 Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic Naafs, B D A Voelker, A.H.L. Karas, C. Andersen, N. Sierro, F.J. 2020-04-23 application/pdf https://hdl.handle.net/1983/75738850-5a86-4367-b728-d22f9a901834 https://research-information.bris.ac.uk/en/publications/75738850-5a86-4367-b728-d22f9a901834 https://doi.org/10.1029/2020PA003905 https://research-information.bris.ac.uk/ws/files/231776426/Gradient_paper_final_3_.pdf eng eng info:eu-repo/semantics/openAccess Naafs , B D A , Voelker , A H L , Karas , C , Andersen , N & Sierro , F J 2020 , ' Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic ' , Paleoceanography and Paleoclimatology , vol. 35 , no. 5 , e2020PA003905 . https://doi.org/10.1029/2020PA003905 Pliocene North Atlantic Biomarker Sea surface temperature IODP alkenone article 2020 ftubristolcris https://doi.org/10.1029/2020PA003905 2024-01-04T23:59:40Z Sea surface temperature (SST) are used to infer past changes in the state of the climate system. Here we use a combination of newly generated and published organic paleothermometer records, together with novel high-resolution benthic foraminiferal δ18 24 O stratigraphy, from four sites in the mid-latitude North Atlantic (41-58 °N) to reconstruct the long-term evolution of the latitudinal SST gradient during the Pliocene and early Pleistocene (4.0 to 2.4 Myr), the last time atmospheric CO2 reached concentrations above 400 ppmv. We demonstrate that the latitudinal SST gradient in the North Atlantic nearly collapsed twice during this period. We conclude that the latitudinal SST gradient in the mid-latitude North Atlantic has two end-members; a maximum as existing at present and a minimum that existedduring certain periods of the (late) Pliocene. Our results suggest that the 400 ppmv Plioceneworld was much more dynamic than currently thought. Article in Journal/Newspaper North Atlantic University of Bristol: Bristol Research Paleoceanography and Paleoclimatology 35 5 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Pliocene North Atlantic Biomarker Sea surface temperature IODP alkenone |
spellingShingle |
Pliocene North Atlantic Biomarker Sea surface temperature IODP alkenone Naafs, B D A Voelker, A.H.L. Karas, C. Andersen, N. Sierro, F.J. Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
topic_facet |
Pliocene North Atlantic Biomarker Sea surface temperature IODP alkenone |
description |
Sea surface temperature (SST) are used to infer past changes in the state of the climate system. Here we use a combination of newly generated and published organic paleothermometer records, together with novel high-resolution benthic foraminiferal δ18 24 O stratigraphy, from four sites in the mid-latitude North Atlantic (41-58 °N) to reconstruct the long-term evolution of the latitudinal SST gradient during the Pliocene and early Pleistocene (4.0 to 2.4 Myr), the last time atmospheric CO2 reached concentrations above 400 ppmv. We demonstrate that the latitudinal SST gradient in the North Atlantic nearly collapsed twice during this period. We conclude that the latitudinal SST gradient in the mid-latitude North Atlantic has two end-members; a maximum as existing at present and a minimum that existedduring certain periods of the (late) Pliocene. Our results suggest that the 400 ppmv Plioceneworld was much more dynamic than currently thought. |
format |
Article in Journal/Newspaper |
author |
Naafs, B D A Voelker, A.H.L. Karas, C. Andersen, N. Sierro, F.J. |
author_facet |
Naafs, B D A Voelker, A.H.L. Karas, C. Andersen, N. Sierro, F.J. |
author_sort |
Naafs, B D A |
title |
Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
title_short |
Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
title_full |
Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
title_fullStr |
Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
title_full_unstemmed |
Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic |
title_sort |
repeated near-collapse of the pliocene sea surface temperature gradient in the north atlantic |
publishDate |
2020 |
url |
https://hdl.handle.net/1983/75738850-5a86-4367-b728-d22f9a901834 https://research-information.bris.ac.uk/en/publications/75738850-5a86-4367-b728-d22f9a901834 https://doi.org/10.1029/2020PA003905 https://research-information.bris.ac.uk/ws/files/231776426/Gradient_paper_final_3_.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Naafs , B D A , Voelker , A H L , Karas , C , Andersen , N & Sierro , F J 2020 , ' Repeated near-collapse of the Pliocene sea surface temperature gradient in the North Atlantic ' , Paleoceanography and Paleoclimatology , vol. 35 , no. 5 , e2020PA003905 . https://doi.org/10.1029/2020PA003905 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020PA003905 |
container_title |
Paleoceanography and Paleoclimatology |
container_volume |
35 |
container_issue |
5 |
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1789334990969896960 |