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Synchronous and proportional deglacial changes in Atlantic meridional overturning and northeast Brazilian precipitation

Changes in heat transport associated with fluctuations in the strength of the Atlantic meridional overturning circulation (AMOC) are widely considered to affect the position of the Intertropical Convergence Zone (ITCZ), but the temporal immediacy of this teleconnection has to date not been resolved....

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Bibliographic Details
Main Authors: Mulitza, Stefan (Author) , Lippold, Jörg (Author) , Wichmann, David (Author) , Antz, Benny (Author) , Frank, Norbert (Author)
Format: Article (Journal)
Language:English
Published: 17 June 2017
In: Paleoceanography
Year: 2017, Volume: 32, Issue: 6
ISSN:1944-9186
DOI:10.1002/2017PA003084
Online Access:Verlag, Volltext: http://dx.doi.org/10.1002/2017PA003084
Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/2017PA003084/abstract
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Author Notes:Stefan Mulitza, Cristiano M. Chiessi, Enno Schefuß, Jörg Lippold, David Wichmann, Benny Antz, Andreas Mackensen, André Paul, Matthias Prange, Kira Rehfeld, Martin Werner, Torsten Bickert, Norbert Frank, Henning Kuhnert, Jean Lynch-Stieglitz, Rodrigo C. Portilho-Ramos, André O. Sawakuchi, Michael Schulz, Tilmann Schwenk, Ralf Tiedemann, Maximilian Vahlenkamp, Yancheng Zhang
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Summary:Changes in heat transport associated with fluctuations in the strength of the Atlantic meridional overturning circulation (AMOC) are widely considered to affect the position of the Intertropical Convergence Zone (ITCZ), but the temporal immediacy of this teleconnection has to date not been resolved. Based on a high-resolution marine sediment sequence over the last deglaciation, we provide evidence for a synchronous and near-linear link between changes in the Atlantic interhemispheric sea surface temperature difference and continental precipitation over northeast Brazil. The tight coupling between AMOC strength, sea surface temperature difference, and precipitation changes over northeast Brazil unambiguously points to a rapid and proportional adjustment of the ITCZ location to past changes in the Atlantic meridional heat transport.
Item Description:Gesehen am 15.02.2018
Physical Description:Online Resource
ISSN:1944-9186
DOI:10.1002/2017PA003084

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