Publication

The carbon dioxide removal gap

SMITH Harry, GRASSI Giacomo, VAUGHAN Naomi, GIDDEN Matthew, NEMET Gregory F., POWIS Carter, SMITH Stephen, LAMB William, PRATAMA Yoga, ROMAN CUESTA Rosa Maria, STEINHAUSER Jan, GASSER Thomas, RIAHI Keywan, GEDEN Oliver, MINX Jan

2024

Overview

Rapid emissions reductions, including reductions in deforestation-based land emissions, are the dominant source of global climate mitigation potential in the coming decades. However, carbon dioxide removal (CDR) will also have an important role to play. Despite this, it remains unclear whether current national proposals for CDR align with temperature targets. Here we 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, we 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. Carbon dioxide removals (CDR) have been integrated into country-submitted reports under the Paris Agreement. However, this Analysis finds a gap between levels of CDR in these national proposals and the scenarios limiting global warming to the 1.5 °C target.

• Publisher: NATURE PUBLISHING GROUP,Nature Publishing Group UK,Nature Publishing Group
• Subject: 704/106/694/682 / 704/844/685 / Analysis / Biochar / Carbon capture and storage / Carbon dioxide / Carbon dioxide emissions / Carbon dioxide removal / Carbon sequestration / Climate Change / Climate change mitigation / Climate Change/Climate Change Impacts / Deforestation / Earth and Environmental Science / Emissions / Emissions control / Energy demand / Environment / Environmental Law/Policy/Ecojustice / Global climate / Global warming / Paris Agreement / Proposals / Scaling