Marine heatwaves (MHWs) are prolonged and extreme warm ocean conditions, both surface and subsurface, with potential to cause substantial ecological and socio-economic damage. Understanding the physical mechanisms that generate MHWs is important to improving our capacity to predict them. Meanwhile, gaining a better understanding of MHW impacts on ecosystems, and their interactions with other parts of the climate system, is significant for promoting sustainable development in the face of climate change. We welcome abstract submissions across all aspects of MHW research and particularly encourage studies of the following themes.

Drivers and methods: novel physical analyses, definitions which challenge the now-traditional statistical framework, observational and modelling requirements for reliable monitoring, AI/ML-based detection and prediction for surface and subsurface MHWs.
Impacts and mitigation: Socio-economic damage to marine activities and industries including but not limited to tourism, fisheries, aquaculture; discussions with stakeholders.
Timescales of predictability: sub-seasonal to seasonal forecasting, long term projections, attribution, precursors, and sources of uncertainty.
Compound events: ecosystem and biogeochemical implications (e.g. on nutrient/oxygen availability/harmful algal blooms/ocean acidification and trophic web), compound extremes with atmospheric circulation/extreme weather events (e.g. tropical cyclones/monsoon circulation).
This session welcomes studies across all spatial and temporal scales; studies on compound extremes and subsurface events are particularly welcome.