there is the potential for very high risks associated with changes in climate extremes for food security in the low adaptation case, already above 2°C of global warming. Finally, studies suggest that regional thresholds for climate extremes could be reached at 2ºC of global warming, for instance in the Mediterranean . Samaniego et al.  conclude that soil moisture droughts in that region would become two to three times longer than at the end of the 20th century at 2ºC, and three to four times longer  at 3ºC of global warming. There is clear evidence of very high risk at 3ºC global warming for wildfires, marine heatwaves and heatwaves in megacities .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report