Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000
The response of the tropical ocean to global climate change and the extent of sea ice in the glacial nordic seas belong to the great controversies in paleoclimatology. Our new reconstruction of peak glacial sea surface temperatures (SSTs) in the Atlantic is based on census counts of planktic foramin...
Main Authors: | , , , , , , , , , , , , , |
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Format: | Dataset |
Language: | English |
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PANGAEA
2003
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.692144 https://doi.org/10.1594/PANGAEA.692144 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.692144 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
06MT15_2 122-2 371 381 383 388 A150/180 A180-72 A180-73 A180-76 A180-78 A181/185 A181-7 A181-9 Aegir Ridge Norwegian-Greenland Sea Amazon Fan Angola Basin Antarctic Ocean ANT-IV/1c Arctic Ocean ARK-II/4 ARK-II/5 ARK-III/3 ARK-IV/3 ARK-IX/4 ARK-V/2 ARK-V/3b ARK-VII/3b ARK-VIII/2 ARK-X/2 Atlantic Ocean AWI_Paleo Barents Sea BC BCR Bear Island Fan Biscaya BOFS11882#4 BOFS11886#2 BOFS11896#1 BOFS11902#1 BOFS11905#1 BOFS14K BOFS16K BOFS17K BOFS31/1K BOFS31#1 BOFS5K BOFS8K |
spellingShingle |
06MT15_2 122-2 371 381 383 388 A150/180 A180-72 A180-73 A180-76 A180-78 A181/185 A181-7 A181-9 Aegir Ridge Norwegian-Greenland Sea Amazon Fan Angola Basin Antarctic Ocean ANT-IV/1c Arctic Ocean ARK-II/4 ARK-II/5 ARK-III/3 ARK-IV/3 ARK-IX/4 ARK-V/2 ARK-V/3b ARK-VII/3b ARK-VIII/2 ARK-X/2 Atlantic Ocean AWI_Paleo Barents Sea BC BCR Bear Island Fan Biscaya BOFS11882#4 BOFS11886#2 BOFS11896#1 BOFS11902#1 BOFS11905#1 BOFS14K BOFS16K BOFS17K BOFS31/1K BOFS31#1 BOFS5K BOFS8K Pflaumann, Uwe Sarnthein, Michael Chapman, Mark R de Abreu, Lucia Funnell, Brian M Hüls, Matthias Kiefer, Thorsten Maslin, Mark Schulz, Hartmut Swallow, John van Kreveld, Shirley A Vautravers, Maryline J Vogelsang, Elke Weinelt, Mara Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
topic_facet |
06MT15_2 122-2 371 381 383 388 A150/180 A180-72 A180-73 A180-76 A180-78 A181/185 A181-7 A181-9 Aegir Ridge Norwegian-Greenland Sea Amazon Fan Angola Basin Antarctic Ocean ANT-IV/1c Arctic Ocean ARK-II/4 ARK-II/5 ARK-III/3 ARK-IV/3 ARK-IX/4 ARK-V/2 ARK-V/3b ARK-VII/3b ARK-VIII/2 ARK-X/2 Atlantic Ocean AWI_Paleo Barents Sea BC BCR Bear Island Fan Biscaya BOFS11882#4 BOFS11886#2 BOFS11896#1 BOFS11902#1 BOFS11905#1 BOFS14K BOFS16K BOFS17K BOFS31/1K BOFS31#1 BOFS5K BOFS8K |
description |
The response of the tropical ocean to global climate change and the extent of sea ice in the glacial nordic seas belong to the great controversies in paleoclimatology. Our new reconstruction of peak glacial sea surface temperatures (SSTs) in the Atlantic is based on census counts of planktic foraminifera, using the Maximum Similarity Technique Version 28 (SIMMAX-28) modern analog technique with 947 modern analog samples and 119 well-dated sediment cores. Our study compares two slightly different scenarios of the Last Glacial Maximum (LGM), the Environmental Processes of the Ice Age: Land, Oceans, Glaciers (EPILOG), and Glacial Atlantic Ocean Mapping (GLAMAP 2000) time slices. The comparison shows that the maximum LGM cooling in the Southern Hemisphere slightly preceeded that in the north. In both time slices sea ice was restricted to the north western margin of the nordic seas during glacial northern summer, while the central and eastern parts were ice-free. During northern glacial winter, sea ice advanced to the south of Iceland and Faeroe. In the central northern North Atlantic an anticyclonic gyre formed between 45° and 60°N, with a cool water mass centered west of Ireland, where glacial cooling reached a maximum of >12°C. In the subtropical ocean gyres the new reconstruction supports the glacial-to-interglacial stability of SST as shown by CLIMAP Project Members (CLIMAP) [1981]. The zonal belt of minimum SST seasonality between 2° and 6°N suggests that the LGM caloric equator occupied the same latitude as today. In contrast to the CLIMAP reconstruction, the glacial cooling of the tropical east Atlantic upwelling belt reached up to 6°–8°C during Northern Hemisphere summer. Differences between these SIMMAX-based and published U37[k]- and Mg/Ca-based equatorial SST records are ascribed to strong SST seasonalities and SST signals that were produced by different planktic species groups during different seasons. |
format |
Dataset |
author |
Pflaumann, Uwe Sarnthein, Michael Chapman, Mark R de Abreu, Lucia Funnell, Brian M Hüls, Matthias Kiefer, Thorsten Maslin, Mark Schulz, Hartmut Swallow, John van Kreveld, Shirley A Vautravers, Maryline J Vogelsang, Elke Weinelt, Mara |
author_facet |
Pflaumann, Uwe Sarnthein, Michael Chapman, Mark R de Abreu, Lucia Funnell, Brian M Hüls, Matthias Kiefer, Thorsten Maslin, Mark Schulz, Hartmut Swallow, John van Kreveld, Shirley A Vautravers, Maryline J Vogelsang, Elke Weinelt, Mara |
author_sort |
Pflaumann, Uwe |
title |
Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
title_short |
Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
title_full |
Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
title_fullStr |
Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
title_full_unstemmed |
Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 |
title_sort |
glacial north atlantic: sea surface conditions reconstructed by glamap 2000 |
publisher |
PANGAEA |
publishDate |
2003 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.692144 https://doi.org/10.1594/PANGAEA.692144 |
op_coverage |
MEDIAN LATITUDE: 29.645884 * MEDIAN LONGITUDE: -17.144101 * SOUTH-BOUND LATITUDE: -56.830000 * WEST-BOUND LONGITUDE: -92.470000 * NORTH-BOUND LATITUDE: 85.390000 * EAST-BOUND LONGITUDE: 40.908333 * DATE/TIME START: 1953-07-30T00:00:00 * DATE/TIME END: 1997-09-03T00:54:00 |
long_lat |
ENVELOPE(-92.470000,40.908333,85.390000,-56.830000) |
genre |
Antarc* Antarctic Antarctic Ocean Arctic Arctic Ocean Barents Sea Bear Island Climate change Foraminifera* Greenland Greenland Sea Iceland Nordic Seas North Atlantic Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Ocean Arctic Arctic Ocean Barents Sea Bear Island Climate change Foraminifera* Greenland Greenland Sea Iceland Nordic Seas North Atlantic Sea ice |
op_source |
Supplement to: Pflaumann, Uwe; Sarnthein, Michael; Chapman, Mark R; de Abreu, Lucia; Funnell, Brian M; Hüls, Matthias; Kiefer, Thorsten; Maslin, Mark; Schulz, Hartmut; Swallow, John; van Kreveld, Shirley A; Vautravers, Maryline J; Vogelsang, Elke; Weinelt, Mara (2003): Glacial North Atlantic: Sea-surface conditions reconstructed by GLAMAP 2000. Paleoceanography, 18(3), 1065, https://doi.org/10.1029/2002PA000774 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.692144 https://doi.org/10.1594/PANGAEA.692144 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.69214410.1029/2002PA000774 |
_version_ |
1799479193756499968 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.692144 2024-05-19T07:29:26+00:00 Glacial North Atlantic: Sea surface conditions reconstructed by GLAMAP 2000 Pflaumann, Uwe Sarnthein, Michael Chapman, Mark R de Abreu, Lucia Funnell, Brian M Hüls, Matthias Kiefer, Thorsten Maslin, Mark Schulz, Hartmut Swallow, John van Kreveld, Shirley A Vautravers, Maryline J Vogelsang, Elke Weinelt, Mara MEDIAN LATITUDE: 29.645884 * MEDIAN LONGITUDE: -17.144101 * SOUTH-BOUND LATITUDE: -56.830000 * WEST-BOUND LONGITUDE: -92.470000 * NORTH-BOUND LATITUDE: 85.390000 * EAST-BOUND LONGITUDE: 40.908333 * DATE/TIME START: 1953-07-30T00:00:00 * DATE/TIME END: 1997-09-03T00:54:00 2003 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.692144 https://doi.org/10.1594/PANGAEA.692144 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.692144 https://doi.org/10.1594/PANGAEA.692144 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Pflaumann, Uwe; Sarnthein, Michael; Chapman, Mark R; de Abreu, Lucia; Funnell, Brian M; Hüls, Matthias; Kiefer, Thorsten; Maslin, Mark; Schulz, Hartmut; Swallow, John; van Kreveld, Shirley A; Vautravers, Maryline J; Vogelsang, Elke; Weinelt, Mara (2003): Glacial North Atlantic: Sea-surface conditions reconstructed by GLAMAP 2000. Paleoceanography, 18(3), 1065, https://doi.org/10.1029/2002PA000774 06MT15_2 122-2 371 381 383 388 A150/180 A180-72 A180-73 A180-76 A180-78 A181/185 A181-7 A181-9 Aegir Ridge Norwegian-Greenland Sea Amazon Fan Angola Basin Antarctic Ocean ANT-IV/1c Arctic Ocean ARK-II/4 ARK-II/5 ARK-III/3 ARK-IV/3 ARK-IX/4 ARK-V/2 ARK-V/3b ARK-VII/3b ARK-VIII/2 ARK-X/2 Atlantic Ocean AWI_Paleo Barents Sea BC BCR Bear Island Fan Biscaya BOFS11882#4 BOFS11886#2 BOFS11896#1 BOFS11902#1 BOFS11905#1 BOFS14K BOFS16K BOFS17K BOFS31/1K BOFS31#1 BOFS5K BOFS8K Dataset 2003 ftpangaea https://doi.org/10.1594/PANGAEA.69214410.1029/2002PA000774 2024-04-30T23:34:34Z The response of the tropical ocean to global climate change and the extent of sea ice in the glacial nordic seas belong to the great controversies in paleoclimatology. Our new reconstruction of peak glacial sea surface temperatures (SSTs) in the Atlantic is based on census counts of planktic foraminifera, using the Maximum Similarity Technique Version 28 (SIMMAX-28) modern analog technique with 947 modern analog samples and 119 well-dated sediment cores. Our study compares two slightly different scenarios of the Last Glacial Maximum (LGM), the Environmental Processes of the Ice Age: Land, Oceans, Glaciers (EPILOG), and Glacial Atlantic Ocean Mapping (GLAMAP 2000) time slices. The comparison shows that the maximum LGM cooling in the Southern Hemisphere slightly preceeded that in the north. In both time slices sea ice was restricted to the north western margin of the nordic seas during glacial northern summer, while the central and eastern parts were ice-free. During northern glacial winter, sea ice advanced to the south of Iceland and Faeroe. In the central northern North Atlantic an anticyclonic gyre formed between 45° and 60°N, with a cool water mass centered west of Ireland, where glacial cooling reached a maximum of >12°C. In the subtropical ocean gyres the new reconstruction supports the glacial-to-interglacial stability of SST as shown by CLIMAP Project Members (CLIMAP) [1981]. The zonal belt of minimum SST seasonality between 2° and 6°N suggests that the LGM caloric equator occupied the same latitude as today. In contrast to the CLIMAP reconstruction, the glacial cooling of the tropical east Atlantic upwelling belt reached up to 6°–8°C during Northern Hemisphere summer. Differences between these SIMMAX-based and published U37[k]- and Mg/Ca-based equatorial SST records are ascribed to strong SST seasonalities and SST signals that were produced by different planktic species groups during different seasons. Dataset Antarc* Antarctic Antarctic Ocean Arctic Arctic Ocean Barents Sea Bear Island Climate change Foraminifera* Greenland Greenland Sea Iceland Nordic Seas North Atlantic Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-92.470000,40.908333,85.390000,-56.830000) |