Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11
Significant changes in atmospheric CO2 over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO2 fluxes. Here we present...
Published in: | Nature Communications |
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Online Access: | https://curis.ku.dk/portal/da/publications/exceptionally-high-biosphere-productivity-at-the-beginning-of-marine-isotopic-stage-11(c79f8813-6230-4ddb-a311-183147c0986e).html https://doi.org/10.1038/s41467-020-15739-2 https://curis.ku.dk/ws/files/247542316/s41467_020_15739_2.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/c79f8813-6230-4ddb-a311-183147c0986e 2024-04-14T08:02:42+00:00 Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stephanie Favre, Violaine Schmitz, Lea Abrial, Heloise Prie, Frederic Extier, Thomas Blunier, Thomas 2020-04-30 application/pdf https://curis.ku.dk/portal/da/publications/exceptionally-high-biosphere-productivity-at-the-beginning-of-marine-isotopic-stage-11(c79f8813-6230-4ddb-a311-183147c0986e).html https://doi.org/10.1038/s41467-020-15739-2 https://curis.ku.dk/ws/files/247542316/s41467_020_15739_2.pdf eng eng info:eu-repo/semantics/openAccess Brandon , M , Landais , A , Duchamp-Alphonse , S , Favre , V , Schmitz , L , Abrial , H , Prie , F , Extier , T & Blunier , T 2020 , ' Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 ' , Nature Communications , vol. 11 , no. 1 , 2112 . https://doi.org/10.1038/s41467-020-15739-2 BUBBLE CLOSE-OFF ICE CORE ANTARCTIC ICE CHRONOLOGY AICC2012 ATMOSPHERIC OXYGEN CARBON-DIOXIDE CLIMATE-CHANGE TRAPPED GASES O-2 CO2 article 2020 ftcopenhagenunip https://doi.org/10.1038/s41467-020-15739-2 2024-03-21T17:28:10Z Significant changes in atmospheric CO2 over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO2 fluxes. Here we present the first high resolution record of Delta O-17 of O-2 in the Antarctic EPICA Dome C ice core over Termination V and Marine Isotopic Stage (MIS) 11 and reconstruct the global oxygen biosphere productivity over the last 445 ka. Our data show that compared to the younger terminations, biosphere productivity at the end of Termination V is 10 to 30 % higher. Comparisons with local palaeo observations suggest that strong terrestrial productivity in a context of low eccentricity might explain this pattern. We propose that higher biosphere productivity could have maintained low atmospheric CO2 at the beginning of MIS 11, thus highlighting its control on the global climate during Termination V. Biosphere productivity is an important component of the CO2 cycle, but how it has varied over past glacial-interglacial cycles is not well known. Here, the authors present new data that shows that global biosphere productivity was 10 to 30% higher during Termination V compared to younger deglaciations. Article in Journal/Newspaper Antarc* Antarctic EPICA ice core Southern Ocean University of Copenhagen: Research Antarctic Southern Ocean The Antarctic Nature Communications 11 1 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
BUBBLE CLOSE-OFF ICE CORE ANTARCTIC ICE CHRONOLOGY AICC2012 ATMOSPHERIC OXYGEN CARBON-DIOXIDE CLIMATE-CHANGE TRAPPED GASES O-2 CO2 |
spellingShingle |
BUBBLE CLOSE-OFF ICE CORE ANTARCTIC ICE CHRONOLOGY AICC2012 ATMOSPHERIC OXYGEN CARBON-DIOXIDE CLIMATE-CHANGE TRAPPED GASES O-2 CO2 Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stephanie Favre, Violaine Schmitz, Lea Abrial, Heloise Prie, Frederic Extier, Thomas Blunier, Thomas Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
topic_facet |
BUBBLE CLOSE-OFF ICE CORE ANTARCTIC ICE CHRONOLOGY AICC2012 ATMOSPHERIC OXYGEN CARBON-DIOXIDE CLIMATE-CHANGE TRAPPED GASES O-2 CO2 |
description |
Significant changes in atmospheric CO2 over glacial-interglacial cycles have mainly been attributed to the Southern Ocean through physical and biological processes. However, little is known about the contribution of global biosphere productivity, associated with important CO2 fluxes. Here we present the first high resolution record of Delta O-17 of O-2 in the Antarctic EPICA Dome C ice core over Termination V and Marine Isotopic Stage (MIS) 11 and reconstruct the global oxygen biosphere productivity over the last 445 ka. Our data show that compared to the younger terminations, biosphere productivity at the end of Termination V is 10 to 30 % higher. Comparisons with local palaeo observations suggest that strong terrestrial productivity in a context of low eccentricity might explain this pattern. We propose that higher biosphere productivity could have maintained low atmospheric CO2 at the beginning of MIS 11, thus highlighting its control on the global climate during Termination V. Biosphere productivity is an important component of the CO2 cycle, but how it has varied over past glacial-interglacial cycles is not well known. Here, the authors present new data that shows that global biosphere productivity was 10 to 30% higher during Termination V compared to younger deglaciations. |
format |
Article in Journal/Newspaper |
author |
Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stephanie Favre, Violaine Schmitz, Lea Abrial, Heloise Prie, Frederic Extier, Thomas Blunier, Thomas |
author_facet |
Brandon, Margaux Landais, Amaelle Duchamp-Alphonse, Stephanie Favre, Violaine Schmitz, Lea Abrial, Heloise Prie, Frederic Extier, Thomas Blunier, Thomas |
author_sort |
Brandon, Margaux |
title |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_short |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_full |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_fullStr |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_full_unstemmed |
Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 |
title_sort |
exceptionally high biosphere productivity at the beginning of marine isotopic stage 11 |
publishDate |
2020 |
url |
https://curis.ku.dk/portal/da/publications/exceptionally-high-biosphere-productivity-at-the-beginning-of-marine-isotopic-stage-11(c79f8813-6230-4ddb-a311-183147c0986e).html https://doi.org/10.1038/s41467-020-15739-2 https://curis.ku.dk/ws/files/247542316/s41467_020_15739_2.pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic EPICA ice core Southern Ocean |
genre_facet |
Antarc* Antarctic EPICA ice core Southern Ocean |
op_source |
Brandon , M , Landais , A , Duchamp-Alphonse , S , Favre , V , Schmitz , L , Abrial , H , Prie , F , Extier , T & Blunier , T 2020 , ' Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11 ' , Nature Communications , vol. 11 , no. 1 , 2112 . https://doi.org/10.1038/s41467-020-15739-2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-020-15739-2 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1796316765915971584 |