A Systematic Assessment of CO₂ Removal Technologies

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With the Paris Agreement’s ambition of limiting climate change to well below 2°C and possibly even below 1.5°C, carbon dioxide removal technologies (CDRs) have moved into the limelight of discussions in climate science and policy. Carbon dioxide removal refers to the intentional removal of CO2 from the atmosphere. A wide range of technologies can be used in this effort, from planting trees and enhancing soil carbon, to combusting biomass, capturing the emissions and storing it in reservoirs (see Definitions). Despite several assessments of CDRs, the current knowledge on CDRs is still diffuse and incomplete, but also growing fast.

This website is dedicated to the assessment of carbon dioxide removal (CDR) technologies. CDR has become an integral part of solution portfolios that limit global warming well below 2°C in accordance with the Paris Agreement. Yet, our knowledge of these technologies is scattered around thousands of scientific publications. This website reports on efforts to synthesize the available knowledge on different CDR technologies. The project currently involves about 20 researchers from more than 10 institutions.

Learn more about the project here.

Evidence synthesis

This website is also dedicated to systematic approaches for evidence synthesis acknowledging that learning requires a formal research on research results. This is paramount in order to spend limited funding resources efficiently and provide policymakers with robust scientific evidence. Hence, results presented on this website are from projects that follow transparent procedure for the identification, selection and assessment of CDR technologies. Current evidence is not from full-fledged systematic reviews, but we work towards presenting such evidence in the future.

Learn more about the methodology here.

Find out about some key results here.