A coupled model for carbon and radiocarbon evolution during the last deglaciation, link to model results

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Autori principali:	Mariotti, Véronique, Paillard, Didier, Bopp, Laurent, Roche, Didier M, Bouttes, Nathaëlle
Natura:	Dataset Open Access
Lingua:	en
Pubblicazione:	PANGAEA 2016
Accesso online:	Acceder al recurso
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author	Mariotti, Véronique Paillard, Didier Bopp, Laurent Roche, Didier M Bouttes, Nathaëlle
author_facet	Mariotti, Véronique Paillard, Didier Bopp, Laurent Roche, Didier M Bouttes, Nathaëlle
collection	Datos científicos de ciencias marinas y ambientales
contents	Changes in the ventilation of the Southern Ocean are thought to play an important role on deglacial carbon and radiocarbon evolution, but have not been tested within a coupled climate-carbon model. Here, we present such a simulation based on a simple scenario of transient deglacial sinking of brines — sea-ice salt rejections — around Antarctica, which modulates Southern Ocean ventilation. This experiment is able to reproduce deglacial atmospheric changes in carbon and radiocarbon but also ocean radiocarbon records measured in the Atlantic, Southern and Pacific Oceans. Simulated for the first time in a fully coupled climate-carbon model including radiocarbon, our modeling results suggest that the deglacial changes in atmospheric carbon dioxide and radiocarbon were achieved by means of a breakdown in the glacial brine-induced stratification of the Southern Ocean.
format	Dataset Open Access
id	pangaea_https___doi_org_10_1594_PANGAEA_856973
institution	PANGAEA
language	en
publishDate	2016
publisher	PANGAEA
record_format	pangaea
spellingShingle	A coupled model for carbon and radiocarbon evolution during the last deglaciation, link to model results Mariotti, Véronique Paillard, Didier Bopp, Laurent Roche, Didier M Bouttes, Nathaëlle Changes in the ventilation of the Southern Ocean are thought to play an important role on deglacial carbon and radiocarbon evolution, but have not been tested within a coupled climate-carbon model. Here, we present such a simulation based on a simple scenario of transient deglacial sinking of brines — sea-ice salt rejections — around Antarctica, which modulates Southern Ocean ventilation. This experiment is able to reproduce deglacial atmospheric changes in carbon and radiocarbon but also ocean radiocarbon records measured in the Atlantic, Southern and Pacific Oceans. Simulated for the first time in a fully coupled climate-carbon model including radiocarbon, our modeling results suggest that the deglacial changes in atmospheric carbon dioxide and radiocarbon were achieved by means of a breakdown in the glacial brine-induced stratification of the Southern Ocean.
title	A coupled model for carbon and radiocarbon evolution during the last deglaciation, link to model results
topic
url	https://doi.org/10.1594/PANGAEA.856973

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