Articles | Volume 1-osr7
https://doi.org/10.5194/sp-1-osr7-3-2023
https://doi.org/10.5194/sp-1-osr7-3-2023
27 Sep 2023
 | OSR7 | Chapter 2.1
 | 27 Sep 2023 | OSR7 | Chapter 2.1

Comparing global trends in marine cold spells and marine heatwaves using reprocessed satellite data

Robert Peal, Mark Worsfold, and Simon Good

Cited articles

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Armour, K., Marshall, J., Scott, J., Donohoe, A., and Newsom, E.: Southern Ocean warming delayed by circumpolar upwelling and equatorward transport, Nature Geosci., 9, 549–554, https://doi.org/10.1038/ngeo2731, 2016. 
Auger, M., Morrow, R., Kestenare, E., Sallée, J., and Cowley, R.: Southern Ocean in-situ temperature trends over 25 years emerge from interannual variability, Nat. Commun., 12, 514, https://doi.org/10.1038/s41467-020-20781-1, 2021. 
Cheung, W. W. L., Frölicher, T. L., Lam, V. W. Y., Oyinlola, M. A., Reygondeau, G., Sumaila, U. R., Tai, T. C., Teh, L. C. L., and Wabnitz, C. C. C.: Marine high temperature extremes amplify the impacts of climate change on fish and fisheries, Sci. Adv., 7, eabh0895, https://doi.org/10.1126/sciadv.abh0895, 2021. 
Darmaraki, S., Somot, S., Sevault, F., and Nabat, P.: Past variability of Mediterranean Sea marine heatwaves, Geophys. Res. Lett., 46, 9813–9823, https://doi.org/10.1029/2019GL082933, 2019. 
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Short summary
Marine heatwaves (MHWs) and marine cold spells (MCSs) can have devastating impacts on the environment. We analysed their trends and found that the number of MHWs and MCSs is increasing and decreasing respectively, except for an area of the Southern Ocean where MCSs are increasing. While our results are in agreement with previous studies, this study uses a different, higher-resolution sea surface temperature dataset, showing that these events are not just a feature of their input dataset.
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