Nature – Lamb et al. (2024): The carbon dioxide removal gap
William F. Lamb, Thomas Gasser, Rosa M. Roman-Cuesta, Giacomo Grassi, Matthew J. Gidden, Carter M. Powis, Oliver Geden, Gregory Nemet, Yoga Pratama, Keywan Riahi, Stephen M. Smith, Jan Steinhauser, Naomi E. Vaughan, Harry B. Smith, Jan C. Minx IN: Nature Climate Change, https://doi.org/10.1038/s41558-024-01984-6
Here the authors show the ‘CDR gap’, that is, CDR efforts proposed by countries fall short of those in integrated assessment model scenarios that limit warming to 1.5 °C. However, the most ambitious proposals for CDR are close to levels in a low-energy demand scenario with the most-limited CDR scaling and aggressive near-term emissions reductions. Further, they observe that many countries propose to expand land-based removals, but none yet commit to substantively scaling novel methods such as bioenergy carbon capture and storage, biochar or direct air carbon capture and storage.