Articles | Volume 6-osr9
https://doi.org/10.5194/sp-6-osr9-5-2025
https://doi.org/10.5194/sp-6-osr9-5-2025
30 Sep 2025
 | OSR9 | Chapter 2.2
 | 30 Sep 2025 | OSR9 | Chapter 2.2

Variations in marine heatwaves and cold spells in the Northwest Atlantic during 1993–2023

Li Zhai, Youyu Lu, Haiyan Wang, Gilles Garric, and Simon Van Gennip

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Cited articles

Amaya, D. J., Jacox, M. G., Alexander, M. A., Scott, J. D., Deser, C., Capotondi, A., and Phillips, A. S.: Bottom marine heatwaves along the continental shelves of North America, Nat. Commun., 14, 1038, https://doi.org/10.1038/s41467-023-36567-0, 2023a. 
Beaudin, É. and Bracco, A.: How Marine Heatwaves Impact Life in the Ocean, Front. Young Minds, 10, 712528, https://doi.org/10.3389/frym.2022.712528, 2022. 
Brasnett, B.: The impact of satellite retrievals in a global sea–surface–temperature analysis, Q. J. Roy. Meteor. Soc., 134, 1745–1760, https://doi.org/10.1002/qj.319, 2008. 
Brickman, D., Hebert, D., and Wang, Z.: Mechanism for the recent ocean warming events on the Scotian Shelf of eastern Canada, Cont. Shelf Res., 156, 11–22, https://doi.org/10.1016/j.csr.2018.01.001, 2018. 
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Short summary
Statistics of marine heatwaves and cold spells in the water column of the Northwest Atlantic during 1993–2023 are derived using a global ocean reanalysis product. On the Scotian Shelf, temperatures and parameters of extreme events present layered structures in the water column, long-term trends, and sharp increases around 2012. Quantification of extreme warm (cold) conditions in 2012 (1998) supports previous studies on the impacts of these conditions on several marine life species.
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