Park et al. (2026): Hemispheric contrast in summer season duration responses to CO₂ removal
Bo-Joung Park, Seung-Ki Min, Soon-Il An, Sang-Wook Yeh, Seok-Woo Son, Jong-Seong Kug, Sang-Yoon Jun, Jongsoo Shin, Young-Hee Ryu & In-Hong Park, IN: Communications Earth & Environment, https://doi.org/10.1038/s43247-026-03548-2
As global warming accelerates, questions arise about whether the climate system can revert to its original state as CO₂ concentrations decrease. Delayed summer season recovery has important implications for heatwaves, wildfires, and socio-environmental risks. Using multiple climate models with CO₂ ramp-up and ramp-down simulations, here the authors show that summer season duration in extratropical lands exhibits hysteretic responses, with longer summers during CO₂ decrease than increase.