Exceptionally high biosphere productivity at the beginning of Marine Isotopic Stage 11

Margaux Brandon (), Amaelle Landais, Stéphanie Duchamp-Alphonse, Violaine Favre, Léa Schmitz, Héloïse Abrial, Frédéric Prié, Thomas Extier and Thomas Blunier
Additional contact information
Margaux Brandon: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Amaelle Landais: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Stéphanie Duchamp-Alphonse: Université Paris-Saclay, CNRS, GEOPS
Violaine Favre: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Léa Schmitz: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Héloïse Abrial: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Frédéric Prié: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Thomas Extier: Université Paris-Saclay, CNRS, CEA, UVSQ, Laboratoire des sciences du climat et de l’environnement
Thomas Blunier: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract 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 Δ17O of O2 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.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-15739-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15739-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-15739-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().