(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography
Modeling studies predict that changes in radiocarbon (14C) reservoir ages of surface waters during the last deglacial episode will reflect changes in both atmospheric 14C concentration and ocean circulation including the Atlantic Meridional Overturning Circulation. Tests of these models require the...
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ftdatacite:10.1594/pangaea.863718 2023-05-15T13:56:00+02:00 (Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography Balmer, Sven Sarnthein, Michael Mudelsee, Manfred Grootes, Pieter Meiert 2016 application/zip https://dx.doi.org/10.1594/pangaea.863718 https://doi.pangaea.de/10.1594/PANGAEA.863718 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1002/2016pa002953 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Geosciences, University of Bremen GeoB Collection article Supplementary Collection of Datasets 2016 ftdatacite https://doi.org/10.1594/pangaea.863718 https://doi.org/10.1002/2016pa002953 2021-11-05T12:55:41Z Modeling studies predict that changes in radiocarbon (14C) reservoir ages of surface waters during the last deglacial episode will reflect changes in both atmospheric 14C concentration and ocean circulation including the Atlantic Meridional Overturning Circulation. Tests of these models require the availability of accurate 14C reservoir ages in well-dated late Quaternary time series. We here test two models using plateau-tuned 14C time series in multiple well-placed sediment core age-depth sequences throughout the lower latitudes of the Atlantic Ocean. 14C age plateau tuning in glacial and deglacial sequences provides accurate calendar year ages that differ by as much as 500-2500 years from those based on assumed global reservoir ages around 400 years. This study demonstrates increases in local Atlantic surface reservoir ages of up to 1000 years during the Last Glacial Maximum, ages that reflect stronger trades off Benguela and summer winds off southern Brazil. By contrast, surface water reservoir ages remained close to zero in the Cariaco Basin in the southern Caribbean due to lagoon-style isolation and persistently strong atmospheric CO2 exchange. Later, during the early deglacial (16 ka) reservoir ages decreased to a minimum of 170-420 14C years throughout the South Atlantic, likely in response to the rapid rise in atmospheric pCO2 and Antarctic temperatures occurring then. Changes in magnitude and geographic distribution of 14C reservoir ages of peak glacial and deglacial surface waters deviate from the results of Franke et al. (2008) but are generally consistent with those of the more advanced ocean circulation model of Butzin et al. (2012). Article in Journal/Newspaper Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Sven ENVELOPE(-60.200,-60.200,-63.733,-63.733) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Geosciences, University of Bremen GeoB |
spellingShingle |
Geosciences, University of Bremen GeoB Balmer, Sven Sarnthein, Michael Mudelsee, Manfred Grootes, Pieter Meiert (Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
topic_facet |
Geosciences, University of Bremen GeoB |
description |
Modeling studies predict that changes in radiocarbon (14C) reservoir ages of surface waters during the last deglacial episode will reflect changes in both atmospheric 14C concentration and ocean circulation including the Atlantic Meridional Overturning Circulation. Tests of these models require the availability of accurate 14C reservoir ages in well-dated late Quaternary time series. We here test two models using plateau-tuned 14C time series in multiple well-placed sediment core age-depth sequences throughout the lower latitudes of the Atlantic Ocean. 14C age plateau tuning in glacial and deglacial sequences provides accurate calendar year ages that differ by as much as 500-2500 years from those based on assumed global reservoir ages around 400 years. This study demonstrates increases in local Atlantic surface reservoir ages of up to 1000 years during the Last Glacial Maximum, ages that reflect stronger trades off Benguela and summer winds off southern Brazil. By contrast, surface water reservoir ages remained close to zero in the Cariaco Basin in the southern Caribbean due to lagoon-style isolation and persistently strong atmospheric CO2 exchange. Later, during the early deglacial (16 ka) reservoir ages decreased to a minimum of 170-420 14C years throughout the South Atlantic, likely in response to the rapid rise in atmospheric pCO2 and Antarctic temperatures occurring then. Changes in magnitude and geographic distribution of 14C reservoir ages of peak glacial and deglacial surface waters deviate from the results of Franke et al. (2008) but are generally consistent with those of the more advanced ocean circulation model of Butzin et al. (2012). |
format |
Article in Journal/Newspaper |
author |
Balmer, Sven Sarnthein, Michael Mudelsee, Manfred Grootes, Pieter Meiert |
author_facet |
Balmer, Sven Sarnthein, Michael Mudelsee, Manfred Grootes, Pieter Meiert |
author_sort |
Balmer, Sven |
title |
(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
title_short |
(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
title_full |
(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
title_fullStr |
(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
title_full_unstemmed |
(Supporting Information) 14Cage plateau tuning of local Atlantic sediment cores, supplement to: Balmer, Sven; Sarnthein, Michael; Mudelsee, Manfred; Grootes, Pieter Meiert (2016): Refined modeling and 14C plateau tuning reveal consistent patterns of glacial and deglacial 14C reservoir ages of surface waters in low-latitude Atlantic. Paleoceanography |
title_sort |
(supporting information) 14cage plateau tuning of local atlantic sediment cores, supplement to: balmer, sven; sarnthein, michael; mudelsee, manfred; grootes, pieter meiert (2016): refined modeling and 14c plateau tuning reveal consistent patterns of glacial and deglacial 14c reservoir ages of surface waters in low-latitude atlantic. paleoceanography |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2016 |
url |
https://dx.doi.org/10.1594/pangaea.863718 https://doi.pangaea.de/10.1594/PANGAEA.863718 |
long_lat |
ENVELOPE(-60.200,-60.200,-63.733,-63.733) |
geographic |
Antarctic Sven |
geographic_facet |
Antarctic Sven |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://dx.doi.org/10.1002/2016pa002953 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.863718 https://doi.org/10.1002/2016pa002953 |
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1766263209014067200 |