Don’t risk temperature overshoot, climate science reaffirms

 
11/29/2021 - A new international study shows how near-term mitigation can help to prevent an overshoot in global temperatures – thereby reducing climate risks and bringing long-term economic gains.
Don’t risk temperature overshoot, climate science reaffirms
Emissions and temperature. Fig. 1 from Riahi, Bertram et al (2021)

If the world continues to push their climate goals ever farther into the future, humanity risks to overshoot the temperature red line of two degrees. Cooling our planet back down is a gargantuan effort, more so as it remains largely nebulous how to clear carbon from the atmosphere on such planetary scales. A group of international researchers coordinated by IIASA, the International Institute for Applied Systems Analysis in Austria, has added more arguments for avoiding to stray into such dangerous territory:

“The study for the first time systematically compares scenarios that avoid overshoot across models. Rapid emissions cuts in the next few decades would mean that there is no need to go net-negative: instead, global temperatures would plateau at a given level around the time we reach net-zero emissions. We also found that models agree on many implications for regional energy systems like the rapid decarbonization of the power sector,” says Christoph Bertram, a study coauthor from the Potsdam Institute for Climate Impact Research (PIK).

Article: Riahi, K., Bertram, C., Huppmann, D., Rogelj, J., Bosetti, V., Cabardos, A-M., Deppermann, A., Drouet, L., et al. (2021). Cost and attainability of meeting stringent climate targets without overshoot. Nature Climate Change. DOI: 10.1038/s41558-021-01215-2

Articles

Riahi, K., Bertram, C., Huppmann, D., Rogelj, J., Bosetti, V., Cabardos, A-M., Deppermann, A., Drouet, L., et al. (2021): Cost and attainability of meeting stringent climate targets without overshoot. Nature Climate Change [DOI: 10.1038/s41558-021-01215-2]

Drouet, L., Bosetti, V., Padoan, S.A., Aleluia Reis, L., Bertram, C., Dalla Longa, F., Després, J., Emmerling, J., et al. (2021). Net zero-emission pathways reduce the physical and economic risks of climate change. Nature Climate Change [DOI: 10.1038/s41558-021-01218-z]

Weblinks

Find more information on the study at IIASA.

The study is part of the Exploring National and Global Actions to reduce Greenhouse gas Emissions (ENGAGE) project funded by the European Union’s Horizon 2020 research and innovation program.

Contact:

PIK press office
Phone: +49 331 288 25 07

E-Mail: press@pik-potsdam.de

Twitter: PIK_Climate
www.pik-potsdam.de