Paris climate targets–how can negative emissions and climate engineering help limiting temperature rise?

In the Paris climate agreement, the countries set themselves the goal of limiting the global temperature increase to below 2°C and ideally even to keep it within a limit of 1.5°C. However, the remaining CO2 emissions budget associated with this goal is already vanishingly small, and a lack of reductions in non-CO2 emissions or a decline in natural CO2 sinks means that the emissions budget has already been used up. Accordingly, in line with the 1.5°C target, all scenarios practically envisage additional, technical removal of CO2 from the atmosphere. These technical measures are intended to support natural measures such as reforestation. At the same time, the question arises whether these technologies can be scaled up quickly enough or whether it is already inevitable to support the causal limitation of climate change by symptomatic containment through solar climate engineering.

How can CO2 removal technologies be promoted, and what opportunities are there for establishing these technologies internationally?

What is the role of announcements by large companies such as Microsoft to achieve net-negative CO2 emission targets? What are the implications for international supply chains?

To what extent does it matter if countries choose different climate change mitigation strategies?

Can solar climate engineering be justified if it protects natural habitats such as the Arctic or the Great Barrier Reef?

How can the Arctic neighbours such as Russia be convinced to forego improved access to their northern coast?

Must-Read: The team should read this before the Kick-Off:

https://www.oekonomenstimme.org/artikel/2019/09/wie-viel-co2-darf-noch-in-die-atmosphaere-und-wie-viel-muessen-wir-wieder-rausnehmen/

Rickels, Wilfried, Merk, Christine, Honneth, Johannes, Schwinger, Jörg, Quaas, Martin and Oschlies, Andreas. “Welche Rolle spielen negative Emissionen für die zukünftige Klimapolitik? : Eine ökonomische Einschätzung zum 1,5 °C-Sonderbericht des Weltklimarats ” Perspektiven der Wirtschaftspolitik, vol. 20, no. 2, 2019, pp. 145-158. https://doi.org/10.1515/pwp-2018-0034

Additional Literature:

https://www.frontiersin.org/articles/10.3389/fclim.2021.690023/full

https://www.nature.com/articles/s41586-021-03723-9

https://www.nature.com/articles/d41586-021-02606-3

https://www.nature.com/articles/d41586-021-02290-3

https://www.nytimes.com/2021/07/15/opinion/climate-change-energy-infrastructure.html

Scientific Partner

Supporting Researcher

Wilfried Rickels

Photo: (c) IfW

Wilfried Rickels heads the research area “Environment and Natural Resources” at the Kiel Institute for the World Economy. He is investigating how the sustainable use of the ocean can be measured, especially in the context of the global Sustainable Development Goals, and what role and significance negative CO2 emission technologies and solar radiation management have for (optimal) climate protection.