in order limit global warming to 1.5°C, the most urgent task is drastic emission reductions. Reducing emissions, however, is no longer enough.
We need to reduce AND remove our emissions.
This means, humanity needs to actively remove carbon dioxide from the atmosphere to help address CO2 emissions that are extremely hard to avoid (residual emissions) or that have accumulated in the atmosphere (historic emissions).
The IPCC estimates that by mid-century, we will need to remove 3-12 billion tons of CO2 from the air every year in order to limit global warming to 1.5°C. Direct air capture and storage (DAC+S) is expected to contribute a significant part, with a potential of removing up to 310 billion tons of CO2 by 2100. This demands the technology’s fast and drastic scale-up.
Source: Adapted from IPCC (2022) & United Nations Environment Programme (2021)