Sea-ice free Arctic contributes to the projected warming minimum in the North Atlantic

Projected global warming is not spatially uniform and one of the minima in warming occurs in the North Atlantic (NA). Several models from the Coupled Model Intercomparison Project Phase 5 even projected a slight NA cooling in 2081–2100 relative to 1986–2005. Here we show that, by our simulations per...

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Bibliographic Details
Published in:Environmental Research Letters
Main Authors: Lingling Suo, Yongqi Gao, Dong Guo, Ingo Bethke
Format: Article in Journal/Newspaper
Language:English
Published: IOP Publishing 2017
Subjects:
sea-ice free Arctic
North Atlantic warming minimum
AMOC weakening
regional climate change
atmosphere–ocean interaction
Environmental technology. Sanitary engineering
TD1-1066
Environmental sciences
GE1-350
Science
Q
Physics
QC1-999
Arctic
Bergen
Climate change
Global warming
North Atlantic
Sea ice
Online Access:https://doi.org/10.1088/1748-9326/aa6a5e
https://doaj.org/article/f1c1d94a5cd54a50a79ce168126d7db0
Description
Summary:Projected global warming is not spatially uniform and one of the minima in warming occurs in the North Atlantic (NA). Several models from the Coupled Model Intercomparison Project Phase 5 even projected a slight NA cooling in 2081–2100 relative to 1986–2005. Here we show that, by our simulations performed with the Bergen Climate Model (BCM), an autumn (September to November) sea-ice free Arctic (SIF) contributes to the NA warming minimum by weakening the Atlantic meridional overturning circulation (AMOC). The role of the air–sea interaction in the response to the SIF, which has not been widely discussed in the literature, has been highlighted by the results presented in this study.

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