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The window to limit global warming to 1.5°C is closing

The window to limit global warming to 1.5°C is closing
Illustration: Annelise Capossela/Axios
Just 20 out of 400 of the climate scenarios examined in a landmark 2018 United Nations climate report would have a realistic chance of limiting global warming to 1.5°C (2.7°F) above preindustrial levels by 2100, a new study finds.
Why it matters: The study, by more than a dozen researchers from around the world, shows that even the scenarios they identified would still need to employ at least one carbon emissions reduction technology at a level they classify as challenging.
The big picture: Many of the scenarios used for the U.N. study relied heavily on employing technologies that pull carbon out of the air and store it permanently in the ground. ....

Johan Rockstr , Lila Warszawski , Potsdam Institute For Climate Impact Research , United Nations , Potsdam Institute , Climate Impact Research , Climate Change , Climate Change Policy , Climate Change Solutions , United Nations Un , பாட்ஸ்‌ட்யாம் நிறுவனம் க்கு காலநிலை தாக்கம் ஆராய்ச்சி , ஒன்றுபட்டது நாடுகள் , பாட்ஸ்‌ட்யாம் நிறுவனம் , காலநிலை தாக்கம் ஆராய்ச்சி , காலநிலை மாற்றம் , காலநிலை மாற்றம் பாலிஸீ , காலநிலை மாற்றம் தீர்வுகள் ,

Few realistic scenarios left to limit global warming to 1.5°C

Of the over 400 climate scenarios assessed in the 1.5°C report by the Intergovernmental Panel on Climate Change (IPCC), only around 50 scenarios avoid significantly overshooting 1.5°C. Of those only around 20 make realistic assumptions on mitigation options, for instance the rate and scale of carbon removal from the atmosphere or extent of tree planting, a new study shows. All 20 scenarios need to pull at least one mitigation lever at challenging rather than reasonable levels. ....

France General , Ryu Koide , Daniel Klingenfeld , Timothym Lenton , Lila Warszawski , Dirk Messner , Gail Whiteman , Owen Gaffney , Johan Rockstr , Hans Joachim Schellnhuber , Peter Schlosser , Daniela Jacob , Tim Lenton , Elmar Kriegler , Nebojsa Nakicenovic , Kazuhiko Takeuchi , University Of Exeter Business School , Exeter University , Potsdam Institute For Climate Impact Research , Environmental Research Letters , Intergovernmental Panel On Climate Change , Leibniz Association , International Institute For Applied Systems Analysis , International Energy Agency , Intergovernmental Panel , Climate Change ,

Few realistic scenarios left to limit global warming to 1.5°C - Sonnenseite - Ökologische Kommunikation mit Franz Alt

Few realistic scenarios left to limit global warming to 1.5°C
Of the over 400 climate scenarios assessed in the 1.5°C report by the Intergovernmental Panel on Climate Change (IPCC), only around 50 scenarios avoid significantly overshooting 1.5°C.
© Potsdam Institute for Climate Impact Research 2021 | Greenhouse gas missions reduction pathways to achieve net zero. Cutout from fig.1a, Warszawski et al (2021)
Of those only around 20 make realistic assumptions on mitigation options, for instance the rate and scale of carbon removal from the atmosphere or extent of tree planting, a new study shows. All 20 scenarios need to pull at least one mitigation lever at “challenging” rather than “reasonable” levels, according to the analysis. Hence the world faces a high degree of risk of overstepping the 1.5°C limit. The realistic window for meeting the 1.5°C target is very rapidly closing. ....

France General , Ryu Koide , Daniel Klingenfeld , Timothym Lenton , Lila Warszawski , Dirk Messner , Gail Whiteman , Owen Gaffney , Johan Rockstr , Hans Joachim Schellnhuber , Peter Schlosser , Daniela Jacob , Tim Lenton , Elmar Kriegler , Nebojsa Nakicenovic , Kazuhiko Takeuchi , University Of Exeter Business School , Exeter University , Potsdam Institute For Climate Impact Research , Environmental Research Letters , Intergovernmental Panel On Climate Change , International Institute For Applied Systems Analysis , International Energy Agency , Intergovernmental Panel , Climate Change , Potsdam Institute ,

Few realistic scenarios left to limit global warming to 1.5°C

Of the over 400 climate scenarios assessed in the 1.5°C report by the Intergovernmental Panel on Climate Change (IPCC), only around 50 scenarios avoid significantly overshooting 1.5°C. Of those only around 20 make realistic assumptions on mitigation options, for instance the rate and scale of carbon removal from the atmosphere or extent of tree planting, a new study shows. All 20 scenarios need to pull at least one mitigation lever at challenging rather than reasonable levels. ....

France General , Ryu Koide , Daniel Klingenfeld , Timothym Lenton , Lila Warszawski , Dirk Messner , Gail Whiteman , Owen Gaffney , Johan Rockstr , Hans Joachim Schellnhuber , Peter Schlosser , Daniela Jacob , Tim Lenton , Elmar Kriegler , Nebojsa Nakicenovic , Kazuhiko Takeuchi , University Of Exeter Business School , Exeter University , Potsdam Institute For Climate Impact Research , Environmental Research Letters , Intergovernmental Panel On Climate Change , Leibniz Association , International Institute For Applied Systems Analysis , International Energy Agency , Intergovernmental Panel , Climate Change ,