Publication Date:
2023-05-04
Description:
Marine heatwaves (MHWs) are prolonged extreme oceanic warm water events, that can cause substantial and sometimes devastating impacts on marine ecosystems. Our knowledge of regional and remote drivers, teleconnections, and local-scale processes underpinning large-scale and iconic MHWs has improved significantly over the past decade because of focused research efforts around the world. Dynamical knowledge of MHW drivers, including those from remote sources such as modes of climate variability and their teleconnections, coupled with local MHW amplification or decay processes, is critical to the process-based understanding of MHW predictability. However, the key development needed for effective adaptation and mitigation efforts by marine conservation and fisheries managers is better MHW prediction skill. MHW predictability depends on multiple factors including how we define MHWs, the regions in which they occur – e.g., coastal versus offshore, western boundary versus eastern boundary regions –, the spatial and temporal scales of the events, atmospheric heat flux versus ocean advection-driven events, and driver persistence. This presentation will explore MHW predictability on various timescales, focusing on the physical processes that offer a prediction. Some significant MHW events around Australia will be central to this discussion.
Language:
English
Type:
info:eu-repo/semantics/conferenceObject
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