PAPER - Faster, Higher, Hotter - What we learned about the climate

Current models, reported in change-related impacts in Australia alone – the the 2021 IPCC report, project around 0.3°C warming massive bushfires of the 2019–2020 Black Summer; between 2020 and 2030, and more than 2°C by the third mass bleaching of the Great Barrier Reef mid-century for the medium- and high-emissions in only five years; and long-term cool-season scenario paths that the world is cur. [...] by at least 3°C by the end of the century.34 Whether that is the case is perhaps the most US security analysts say 3°C could result in a world important question of science right now because it of “outright chaos”.35 Chatham House’s scenario in its would mean the end of our civilisation.”31 Climate Change RIsk Assessment 2021 had a mean Earlier, in a landmark paper, scientists had pointed warming. [...] Permafrost warned that the world is “dangerously off track” to across the Arctic is beginning to irreversibly thaw and meet the Paris Agreement goals, that the risks are release carbon dioxide and methane… the boreal forest compounding, and that “without immediate action the in the subarctic is increasingly vulnerable” and impacts will be devastating” in the coming decades, concluded that “other t. [...] They’ve become an x-factor in the to break apart in the next five years or so, resulting in a speeding up of the glacier’s flow and ice discharge, possibly heralding the collapse of the glacier itself, and triggering similar increases 42 across the Amundsen Sea glaciers; “the final 978762 collapse of Thwaites Glacier’s last remaining ice 43 htt. [...] Current climate models are not capturing all the more warming in the long-term, the risks increase risks54, such as the stalling of the Gulf Stream55, polar dramatically.” Jonathan Donges added: “To effectively ice melt56 and the uptick in extreme weather events.