Diplomats from nearly 200 nations and top climate scientists begin a week-long huddle in Switzerland Monday to distill nearly a decade of published science into a 20-odd-page warning about the existential danger of global warming, and what to do about it.
The UN Intergovernmental Panel on Climate Change's synthesis report -- to be released on 20 March -- will detail observed and projected changes in Earth's climate system; past and future impacts such as devastating heatwaves, flooding and rising seas; and ways to halt the carbon pollution pushing Earth toward an unlivable state.
Under the 2015 Paris treaty, nations promised to collectively cap the rise at "well below" 2C, and at 1.5C if possible"It is scientists telling governments how they are doing during these crucial defining years," Kosonen said. An IPCC special report in 2018 made it alarmingly clear that the more ambitious aspirational goal -- since adopted by governments and business as a hard target -- was a better bet for a climate-safe world.
Unveiled ahead of COP28 UN climate talks in Dubai in December, the global stocktake will confront nations with the deep inadequacy of their Paris pledges to cut emissions, which would allow global temperatures to rise 2.8C above the preindustrial benchmark. The synthesis report will also reflect debate over the best way to decarbonise the global economy, with some emphasising the need to rapidly phase out fossil fuel use and reduce consumer demand, and others the potential of technological solutions.
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