Nature Climate Change, Published online: 25 September 2024; doi:10.1038/s41558-024-02136-6
The authors reveal distinct trends in surface and subsurface phytoplankton dynamics, highlighting the need for subsurface monitoring. Whereas subsurface phytoplankton respond to recent warming with biomass increases, surface phytoplankton show altered carbon-to-chlorophyll ratios but minimal biomass change.