Frequent marine heatwaves are hidden below the surface of the global ocean. Using sea surface temperatures as a proxy of marine heat waves fails to capture about 50% of the marine heatwaves occurring in the subsurface ocean

Frequent marine heatwaves are hidden below the surface of the global ocean. Using sea surface temperatures as a proxy of marine heat waves fails to capture about 50% of the marine heatwaves occurring in the subsurface ocean