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Post by Andrei Tchentchik on Mar 6, 2020 17:45:50 GMT 2
(.#A.071).- 7 degree warming by 2100. 7 degree warming by 2100. The rise in temperatures more marked than expected. PARIS (AFP) - Global warming promises to be more pronounced than expected, the worst-case scenario forecasting +7 degrees Celsius in 2100, warned French scientists yesterday by presenting very alarming new climate models, which will serve as the basis for the IPCC. . UN climate experts will unveil their new climate change assessment report in 2021, the sixth since 1990. A hundred French researchers and engineers have worked to develop two climate models that will fuel this work. These models were then subjected to several socioeconomic scenarios. In the most pessimistic scenario, based on rapid economic growth fueled by fossil fuels, the global average temperature increase reaches 6.5 to 7 degrees Celsius in 2100. In the last IPCC report of 2014, the worst scenario predicted +4.8 degrees Celsius compared to the pre-industrial period. DROUGHTS What would this mean in concrete terms for human societies? Among other things, "much longer and more extensive droughts" and "highly questioned agricultural practices", according to researcher David Salas Y. Mélia. Scientists have also subjected their climate models to other scenarios. The most optimistic, based on strong international cooperation and the priority given to sustainable development, would allow '' just '' to remain under the objective of 2 degrees Celsius of warming and '' at the cost of a temporary overshoot of the goal of 2 degrees Celsius over the century. '' F I N.
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