Nature Climate Change, Published online: 10 April 2025; doi:10.1038/s41558-025-02314-0
Heatwaves in lakes are increasing with climate change, but are typically studied at the surface; little is known about heatwave dynamics with depth. This study finds subsurface heatwaves last longer, but are less intense than surface heatwaves and have increased in frequency over the past 40 years.