Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature?
The occurrence of ice-free conditions in the Nordic seas during the Last Glacial Maximum has been demonstrated using microfossil and biomarker approaches. An accurate picture of the prevailing oceanographic conditions may be more difficult to ascertain. Thus, uncertainties for most proxies increase...
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Language: | English |
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ftuabarcelonapb:oai:ddd.uab.cat:25442 2024-09-15T18:20:28+00:00 Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? Rosell Melé, Antoni Comes, Pau 1999 application/pdf https://ddd.uab.cat/record/25442 eng eng Paleoceanography Vol. 14, Issue 6 (1999), p. 770-776 https://ddd.uab.cat/record/25442 urn:10.1029/1999PA900037 urn:oai:ddd.uab.cat:25442 urn:recercauab:ARE-40446 urn:articleid:19449186v14n6p770 urn:scopus_id:0033497061 urn:wos_id:000084268100011 urn:oai:egreta.uab.cat:publications/1d6c72e6-4ede-4c26-a58c-24e79f5d7c53 open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ Geochemistry Paleoceanography Article 1999 ftuabarcelonapb 2024-08-06T14:30:52Z The occurrence of ice-free conditions in the Nordic seas during the Last Glacial Maximum has been demonstrated using microfossil and biomarker approaches. An accurate picture of the prevailing oceanographic conditions may be more difficult to ascertain. Thus, uncertainties for most proxies increase at the cold extreme of temperature calibrations and glacial sediments contain small amounts of microfossils and biomarkers. Here we discuss sea surface temperature estimates derived from alkenone indices for the Last Glacial Maximum in the Nordic seas that provide a surprising scenario, where surface temperatures were warmer than at present. We conclude that the UK37' and UK37 estimates may not be interpreted in terms of sea surface temperature as several factors may have conspired to bias the molecular signal. However, using an alternative index based on the abundance of the C37∶4 alkenone, we estimate a maximum temperature of 6°C. Article in Journal/Newspaper Nordic Seas Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Paleoceanography 14 6 770 776 |
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Open Polar |
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Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
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ftuabarcelonapb |
language |
English |
topic |
Geochemistry Paleoceanography |
spellingShingle |
Geochemistry Paleoceanography Rosell Melé, Antoni Comes, Pau Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
topic_facet |
Geochemistry Paleoceanography |
description |
The occurrence of ice-free conditions in the Nordic seas during the Last Glacial Maximum has been demonstrated using microfossil and biomarker approaches. An accurate picture of the prevailing oceanographic conditions may be more difficult to ascertain. Thus, uncertainties for most proxies increase at the cold extreme of temperature calibrations and glacial sediments contain small amounts of microfossils and biomarkers. Here we discuss sea surface temperature estimates derived from alkenone indices for the Last Glacial Maximum in the Nordic seas that provide a surprising scenario, where surface temperatures were warmer than at present. We conclude that the UK37' and UK37 estimates may not be interpreted in terms of sea surface temperature as several factors may have conspired to bias the molecular signal. However, using an alternative index based on the abundance of the C37∶4 alkenone, we estimate a maximum temperature of 6°C. |
format |
Article in Journal/Newspaper |
author |
Rosell Melé, Antoni Comes, Pau |
author_facet |
Rosell Melé, Antoni Comes, Pau |
author_sort |
Rosell Melé, Antoni |
title |
Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
title_short |
Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
title_full |
Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
title_fullStr |
Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
title_full_unstemmed |
Evidence for a Warm Last Glacial Maximum in the Nordic Seas or an example of shortcomings in UK37' and UK37 to estimate low sea surface temperature? |
title_sort |
evidence for a warm last glacial maximum in the nordic seas or an example of shortcomings in uk37' and uk37 to estimate low sea surface temperature? |
publishDate |
1999 |
url |
https://ddd.uab.cat/record/25442 |
genre |
Nordic Seas |
genre_facet |
Nordic Seas |
op_relation |
Paleoceanography Vol. 14, Issue 6 (1999), p. 770-776 https://ddd.uab.cat/record/25442 urn:10.1029/1999PA900037 urn:oai:ddd.uab.cat:25442 urn:recercauab:ARE-40446 urn:articleid:19449186v14n6p770 urn:scopus_id:0033497061 urn:wos_id:000084268100011 urn:oai:egreta.uab.cat:publications/1d6c72e6-4ede-4c26-a58c-24e79f5d7c53 |
op_rights |
open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ |
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Paleoceanography |
container_volume |
14 |
container_issue |
6 |
container_start_page |
770 |
op_container_end_page |
776 |
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1810458855229882368 |