Summary/Abstract
This study uses a well established event-based framework to examine the contribution of sources of human-induced climate change to extreme heat events. The study finds that climate change contributed to the intensification and likelihood of 213 heatwaves between 2000 and 2023, with substantial contribution from 180 carbon majors. The study also finds that “[d]epending on the carbon major, their individual contribution is high enough to enable the occurrence of 16–53 heatwaves that would have been virtually impossible in a preindustrial climate.”