Carbon Dioxide Removals

The IPCC defines CDR as a set of “anthropogenic activities removing CO2 from the atmosphere and durably storing it in geological, terrestrial, or ocean reservoirs, or in products.”

Given their potential to generate 'negative emissions,' the expansion of these activities has garnered considerable attention from scientists and policymakers aiming to diminish atmospheric CO2 concentrations.

Attaining net zero emissions, and ultimately achieving net negative emissions, necessitates the establishment of public confidence, the implementation of new policies, and the upscaling of various CDR techniques. To have at least a 50% chance of capping global warming at 1.5°C with minimal or no overshoot, feasible trajectories indicate a requirement for 20-660 gigatons of net negative CO2 emissions by 2100, implying that the deployment of gross CDR will likely need to exceed this range.

CDR methodologies differ significantly in how they extract CO2 from the atmosphere, where the carbon is stored, and for what duration. They also vary in terms of resource demands and other ancillary effects they produce beyond their climate mitigation benefits.

Criteria for High-Quality Carbon Removal Certification

To certify removals as 'high-quality,' the following criteria should form the basis of minimum standards in any current or forthcoming certification scheme: