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The Recent Atlantic Cold Anomaly: Causes, Consequences, and Related Phenomena
Simon A Josey1, Joel J-M Hirschi1, Bablu Sinha1
1National Oceanography Centre, University of Southampton Waterfront Campus, Southampton SO14 3ZH, United Kingdom;
Annual Review of Marine Science
|September 22, 2017
Summary
A recent cold anomaly in the North Atlantic subpolar gyre was driven by air-sea interactions. This study reviews its causes, impacts on atmospheric patterns, and contrasts it with Pacific events.
Area of Science:
- Oceanography
- Climate Science
- Atmospheric Science
Background:
- Persistent cold ocean temperature anomalies observed in the North Atlantic.
- A significant cold anomaly in the subpolar gyre occurred from 2013-2014 to 2016.
- This anomaly coincided with global warming trends, prompting scientific discussion.
Purpose of the Study:
- To review the role of air-sea interaction and ocean processes in generating the North Atlantic cold anomaly.
- To place the anomaly within a longer-term climatic context.
- To discuss potential atmospheric impacts and compare with other oceanic events.
Main Methods:
- Literature review of air-sea interaction and oceanographic processes.
- Analysis of long-term ocean temperature data.
- Comparison with North Pacific warm anomalies and atmospheric forcing.
Main Results:
- The cold anomaly was primarily generated by air-sea interactions and ocean processes.
- The anomaly influenced atmospheric patterns, including the North Atlantic Oscillation.
- Contrasting behavior was observed between the Atlantic cold and Pacific warm events.
Conclusions:
- Air-sea interactions are key drivers of North Atlantic cold anomalies.
- These anomalies have significant implications for atmospheric circulation and climate.
- Understanding these events is crucial for predicting future climate variability.