cold extremes, including cold waves have become less frequent and less severe, with high confidence that human-induced climate change is the main driver of these changes. some recent hot extremes observed over the past decade would have been extremely unlikely to occur without human influence on the climate system. a.3.5. human influence has likely increased the chance of compound extreme events since the 1950s. this includes increases in the frequency of concurrent heat waves and droughts on the global scale. high confidence, fire weather in some regions of all inhabited confidence, medium confidence, and compound flooding in some locations. b.2.4, it is very likely that heavy precipitation events will intensify, and become more frequent in most regions with additional global warming. b.2.5, additional warming is