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Marine heatwaves are in the eye of the beholder

Critical methodological choices in marine heatwave detection can yield dramatically different results. We call for context-specific methods that account for regional variability to advance marine heatwave research and socio-ecological outcomes.

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Fig. 1: A conceptual framework highlighting some decision points and pathways in MHW detection.

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Acknowledgements

This work was supported by the NASA Ecological Conservation program under grant numbers 80NSSC19K0187 and 80NSSC23K1538 (C.D.B., R.L.L., L.H.M. and N.F.), the NASA Ocean Salinity Science Team under grant number 80NSSC22K0995 (S.R.) and the Northeast Regional Ocean Council, as well as the Postdoctoral Scholar Program (L.H.M.), the Robert L. James Early Career Scientist Award (C.D.B.) and the Investment in Science Fund (S.R.) at Woods Hole Oceanographic Institution.

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Correspondence to Laura H. McDonnell.

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Farchadi, N., McDonnell, L.H., Ryan, S. et al. Marine heatwaves are in the eye of the beholder. Nat. Clim. Chang. 15, 236–239 (2025). https://doi.org/10.1038/s41558-025-02257-6

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