Lagoon temperature and hydrodynamics of Reao Atoll (Tuamotu Archipelago, French Polynesia) before and during the 2024 El-Niño marine heatwave

Ladet, Esther; Chevillard, Carla; Le Gendre, Romain; Trophime, Thomas; Petton, Sébastien; Van Wynsberge, Simon

doi:10.5194/essd-18-5283-2026

Articles | Volume 18, issue 7

https://doi.org/10.5194/essd-18-5283-2026

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

https://doi.org/10.5194/essd-18-5283-2026

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

Articles | Volume 18, issue 7

Data description article

| Highlight paper

|

22 Jul 2026

Data description article | Highlight paper |

| 22 Jul 2026

Lagoon temperature and hydrodynamics of Reao Atoll (Tuamotu Archipelago, French Polynesia) before and during the 2024 El-Niño marine heatwave

Esther Ladet, Carla Chevillard, Romain Le Gendre, Thomas Trophime, Sébastien Petton, and Simon Van Wynsberge

Data sets

Lagoon temperature and hydrodynamics of Reao atoll (Tuamotu Archipelago) Romain Le Gendre et al. https://doi.org/10.17882/105885

Short summary

This dataset on Reao atoll provides an unprecedented record of thermal dynamics and lagoon circulation in a semi-closed atoll of French Polynesia, including full coverage of the extreme 2024 marine heatwave that caused mass bleaching. Collected over six monitoring periods between 2016 and 2025, it offers a critical basis for analysing thermal exposure of giant clams, identifying potential refugia, and supporting modelling of atoll responses to climate change.