The effect of climate change has been identified in aggregate measures of economic performance, such as GDP, in North America and globally , although the magnitude of these changes is difficult to constrain . Climate change has been observed to affect national GDP level and economic growth . The extent to which climate has affected GDP may be challenging to identify statistically . Observed GDP effects are generally slightly negative in the USA, higher and negative for Mexico, and the directionality of the effects in Canada varies by study and modelling approach .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report