Data/hora: 09/06/2024 04:03:41

Provedor de dados: 	5	
País: 	France	
Título: 	Exploring the oxygen isotope fingerprint of Dansgaard-Oeschger variability and Heinrich events	
Autores: 	Bagniewski, Witold; Meissner, Katrin J.; Menviel, Laurie.	
Data: 	2017-03	
Ano: 	2017	
Palavras-chave: 	MIS3; Model-data comparison; Heinrich events; Dansgaard-Oeschger cycles; Delta O-18; AMOC.	
Resumo: 	We present the first transient simulations of Marine Isotope Stage 3 (MIS 3) performed with an oxygen isotope-enabled climate model. Our simulations span several Dansgaard-Oeschger cycles and three Heinrich stadials and are directly compared with oxygen isotope records from 13 sediment and 2 ice cores. Our results are consistent with a 30-50% weakening of the Atlantic Meridional Overturning Circulation during Dansgaard-Oeschger stadials and a complete shutdown during Heinrich stadials. We find that the simulated delta O-18 anomalies differ significantly between Heinrich stadials and non-Heinrich stadials. This difference is mainly due to different responses in ocean circulation, and therefore climate, impacting oceanic delta O-18, while the volume of O-18-depleted meltwater plays a secondary role.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00420/53180/55067.pdf

https://archimer.ifremer.fr/doc/00420/53180/55081.pdf

DOI:10.1016/j.quascirev.2017.01.007

https://archimer.ifremer.fr/doc/00420/53180/	
Editor: 	Pergamon-elsevier Science Ltd	
Formato: 	application/pdf	
Fonte: 	Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2017-03 , Vol. 159 , P. 1-14	
Fonte: 	2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license

info:eu-repo/semantics/openAccess

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