IPCC WGII Sixth Assessment Report – Technical Summary

There are various global temperature rise and ecosystem impact scenarios, representing uncertainty that affects climate change exposure and vulnerability.  This IPCC report summarizes the current understanding of observed climate change impacts on ecosystems, human societies and their cities, settlements, infrastructures, and industrial systems as well as vulnerabilities and future risks tied to different socioeconomic development pathways.  It shows the clear threat to the ecosystem by correlating direct human impacts – land-use change, pollution, overexploitation, fragmentation, and destruction – and climate change.  The likelihood of an emissions scenario affects the probability of a climate outcome and the overall distribution of climate outcomes.