Highest IPCC warming model, RCP8.5, essentially models business as usual
“Not only are the emissions consistent with RCP8.5 in close agreement with historical total cumulative CO2 emissions (within 1%), but RCP8.5 is also the best match out to midcentury under current and stated policies with still highly plausible levels of CO2 emissions in 2100.”
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And it's not the current trend. We're more on 4.5, which means 3° by the end of century. Not great, but not the worst.