Articles | Volume 19, issue 5
https://doi.org/10.5194/os-19-1339-2023
https://doi.org/10.5194/os-19-1339-2023
Research article
 | 
06 Sep 2023
Research article |  | 06 Sep 2023

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Amélie Simon, Coline Poppeschi, Sandra Plecha, Guillaume Charria, and Ana Russo

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Cited articles

Alexander, M. A., Scott, J. D., Friedland, K. D., Mills, K. E., Nye, J. A., Pershing, A. J., and Thomas, A. C.: Projected sea surface temperatures over the 21st century: Changes in the mean, variability and extremes for large marine ecosystem regions of Northern Oceans, Elementa: Science of the Anthropocene, 6, https://doi.org/10.1525/elementa.191, 2018. 
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Brown Ross, A., Lilley, M. K. S., Shutler, J., Widdicombe, C., Rooks, P., McEvoy, A., Torres, R., Artioli, Y., Rawle, G., Homyard, J., Tyler, C. R., and Lowe, C.: Harmful Algal Blooms and their impacts on shellfish mariculture follow regionally distinct patterns of water circulation in the western English Channel during the 2018 heatwave, Harmful Algae, 111, 102166, https://doi.org/10.1016/j.hal.2021.102166, 2022. 
Charria, G., Lazure, P., Le Cann, B., Serpette, A., Reverdin, G., Louazel, S., Batifoulier, F., Dumas, F., Pichon, A., and Morel, Y.: Surface layer circulation derived from Lagrangian drifters in the Bay of Biscay, J. Marine Syst., 109, 60–76, https://doi.org/10.1016/j.jmarsys.2011.09.015, 2013. 
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Short summary
In the coastal northeastern Atlantic and for three subregions (the English Channel, Bay of Brest and Bay of Biscay) over the period 1982–2022, marine heatwaves are more frequent and longer and extend over larger areas, while the opposite is seen for marine cold spells. This result is obtained with both in situ and satellite datasets, although the satellite dataset underestimates the amplitude of these extremes.