- 1University of Tasmania, Institute of Marine and Antarctic Studies, Battery Point, Australia
- 2Australian Research Council Centre of Excellence for Climate Extremes
- 3LOCEAN‐IPSL, Sorbonne Université (UPMC), Paris, France
- 4School of Earth and Atmospheric Science, Georgia Institute of Technology, Atlanta, GA, USA
- 5Program in Ocean Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- 6Institute of Coastal Systems, Helmholtz‐Zentrum Hereon, Geesthacht, Germany
- 7Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, USA
- 8School of Geography and Remote Sensing, Guangzhou University, Guangzhou, China
- 9Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
- 10Physical Sciences Laboratory, NOAA, Boulder, CO, USA
- 11Faculty of Engineering and Science, Universidad Adolfo Ibáñez, Santiago, Chile
- 12Data Observatory Foundation, ANID Technology Center No. DO210001, Santiago, Chile
Marine heatwaves (MHWs) have caused devasting ecological and socioeconomic impacts worldwide. Understanding the connection of regional events to large‐scale climatic drivers is key for enhancing predictability and mitigating MHW impacts. Despite the reported connection between MHWs globally and El Niño–Southern Oscillation (ENSO), establishing statistically significant links between different types of ENSO events and MHWs remains challenging due to the limited duration of observational data. Here, we use 10,000 years of simulations from a Linear Inverse Model (LIM) to address this issue. Our findings reveal distinct connections between MHWs and ENSO, with diverging influences from different flavors of El Niño and La Niña events. In addition, under long‐lasting El Niño conditions, the likelihood of MHWs increases by up to 12‐fold in the Indian and Pacific Oceans. This study highlights the global connections between ENSO diversity and variations in MHW events.
How to cite: Gregory, C., Artana, C., Lama, S., León‐FonFay, D., Sala, J., Xiao, F., Xu, T., Capotondi, A., Martinez‐Villalobos, C., and Holbrook, N.: Global Marine Heatwaves Under Different Flavors of ENSO, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-1270, https://doi.org/10.5194/egusphere-egu25-1270, 2025.
