Feng M. auteur aut IRD Lengaigne Matthieu auteur aut IRD Manneela Sunanda auteur aut IRD Sen Gupta A. auteur aut IRD Vialard Jérôme auteur aut IRD text bookSection eng text/pdf born digital access In this chapter, we review the current knowledge on high-impact oceanic extremes in the Indian Ocean, namely, marine heatwaves (MHWs), tropical cyclones (TCs), and tsunamis. MHWs and TCs are both modulated by Indo-Pacific climate variability, in particular, the El Niño-Southern Oscillation and the Indian Ocean Dipole. Anthropogenic warming has resulted in more frequent MHWs over the past two decades, a tendency very likely to increase further. Because of their stochastic nature, it is difficult to confidently attribute the declines in TC numbers, observed over large parts of the Indian Ocean except for the Arabian Sea, to climate change. Future projections consistently suggest fewer TCs in the southern Indian Ocean but also more intense TCs with more extreme precipitation at the basin scale. Subduction of the Indian and Australian plates underneath the Eurasian plate creates hotspots for earthquakes in the Indian Ocean that generate tsunamis, devastating bordering countries. Monitoring, predictions, and early warning systems are crucial to mitigate the impacts of marine extremes. specialized OCEAN INDIEN 032CLIMET Ummenhofer C.C. ed. edt IRD Hood R.R. ed. edt IRD 121-144 2024 https://www.documentation.ird.fr/hor/fdi:010091508 10.1016/b978-0-12-822698-8.00011-1 978-0-12-822698-8 [F B010091508] https://www.documentation.ird.fr/hor/fdi:010091508 https://www.documentation.ird.fr/intranet/publi/2025-01/010091508.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2024-07-22 2025-11-06 fdi:010091508 fre