Articles | Volume 18, issue 4
Ocean Sci., 18, 953–978, 2022
Ocean Sci., 18, 953–978, 2022
Research article
06 Jul 2022
Research article | 06 Jul 2022

Causes of the 2015 North Atlantic cold anomaly in a global state estimate

Rachael N. C. Sanders et al.

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Cited articles

Alexander, M. A., Deser, C., and Timlin, M. S.: The reemergence of SST anomalies in the North Pacific Ocean, J. Climate, 12, 2419–2433,<2419:TROSAI>2.0.CO;2, 1999. a
Asbjørnsen, H., Årthun, M., Skagseth, Ø., and Eldevik, T.: Mechanisms of ocean heat anomalies in the Norwegian Sea, J. Geophys. Res.-Oceans, 124, 2908–2923,, 2019. a
Barnston, A. G. and Livezey, R. E.: Classification, seasonality and persistence of low-frequency atmospheric circulation patterns, Mon. Weather Rev., 115, 1083–1126,<1083:CSAPOL>2.0.CO;2, 1987. a
Buckley, M. W., Ponte, R. M., Forget, G., and Heimbach, P.: Low-frequency SST and upper-ocean heat content variability in the North Atlantic, J. Climate, 27, 4996–5018,, 2014. a, b
Buckley, M. W., Ponte, R. M., Forget, G., and Heimbach, P.: Determining the origins of advective heat transport convergence variability in the North Atlantic, J. Climate, 28, 3943–3956,, 2015. a
Short summary
In 2015, record low temperatures were observed in the North Atlantic. Using an ocean model, we show that surface heat loss in December 2013 caused 75 % of the initial cooling before this "cold blob" was trapped below the surface. The following summer, the cold blob re-emerged due to a strong temperature difference between the surface ocean and below, driving vertical diffusion of heat. Lower than average surface warming then led to the coldest temperature anomalies in August 2015.