Multidecadal and Multicentennial Variability of the Meridional Overturning Circulation

The variability of the meridional overturning circulation (MOC) simulated in a multimillenial control integration of the Kiel Climate Model (KCM) displays enhanced variability relative to the red background at decadal and centennial timescales. The multidecadal variability is the model's versio...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Park, Wonsun, Latif, Mojib
Format: Article in Journal/Newspaper
Language:English
Published: AGU (American Geophysical Union) 2008
Subjects:
Southern Ocean
North Atlantic
Sea ice
Online Access:https://oceanrep.geomar.de/id/eprint/5071/
https://oceanrep.geomar.de/id/eprint/5071/1/2008GL035779.pdf
https://doi.org/10.1029/2008GL035779
Description
Summary:The variability of the meridional overturning circulation (MOC) simulated in a multimillenial control integration of the Kiel Climate Model (KCM) displays enhanced variability relative to the red background at decadal and centennial timescales. The multidecadal variability is the model's version of the Atlantic Multidecadal Variability (AMV), often referred to as Atlantic Multidecadal Oscillation (AMO). While multidecadal variability originates in the North Atlantic, multicentennial variability is driven in the Southern Ocean. Both multidecadal and multicentennial variability are associated with considerable changes in sea ice extent. This may be important to understand the different evolution of sea ice cover in the Northern and Southern Hemisphere during the most recent decades, with a strong decline observed in the North and almost no trend in the South.

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