Sensitivity of marine heatwaves metrics to SST products, focusing on the Tropical Pacific

Chevillard, Carla; Le Gendre, Romain; Menkes, Christophe; Izumo, Takeshi; Pagli, Bastien; Van Wynsberge, Simon; Cravatte, Sophie

doi:10.5194/os-22-1213-2026

Articles | Volume 22, issue 2

https://doi.org/10.5194/os-22-1213-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-22-1213-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 2

Research article

|

22 Apr 2026

Research article |

| 22 Apr 2026

Sensitivity of marine heatwaves metrics to SST products, focusing on the Tropical Pacific

Carla Chevillard, Romain Le Gendre, Christophe Menkes, Takeshi Izumo, Bastien Pagli, Simon Van Wynsberge, and Sophie Cravatte

Supplement

https://doi.org/10.5194/os-22-1213-2026-supplement

Data sets

Global Ocean OSTIA Sea Surface Temperature and Sea Ice Reprocessed E.U. Copernicus Marine Service Information https://doi.org/10.48670/moi-00021

ESA SST CCI and C3S reprocessed sea surface temperature analyses E.U. Copernicus Marine Service Information https://doi.org/10.48670/moi-00169

Global Ocean OSTIA Sea Surface Temperature and Sea Ice Reprocessed E.U. Copernicus Marine Service Information https://doi.org/10.48670/moi-00168

Short summary

To detect past marine heatwaves events and analyse their characteristics, scientists use one of the available sea surface temperature products, relying on different data ingested and procedures. Here, we compare marine heatwaves statistics computed using six products in the tropical Pacific over 1993–2021. We highlight significant differences and provide uncertainties. Our results advocate for the use of multiple products in marine heatwaves studies to increase the robustness of the conclusions.