TY - JOUR AU - Sarah L Nordahl AU - Rebecca J Hanes AU - Kimberley K Mayfield AU - Corey Myers AU - Sarah E Baker AU - Corinne D Scown AB -

Carbon dioxide removal (CDR) technologies are essential to address climate change and serve to compensate for legacy and hard-to-abate greenhouse gas emissions. Although near-term emissions reductions should be the priority, development and deployment of CDR must proceed now to ensure that relevant technologies are ready at scale in the future. Despite a rapid growth in CDR purchases, no single standardized methodology for evaluating project-level net CO2 removal exists. Life cycle assessment (LCA) frequently produces net-negative emissions footprints, but only a small subset of those systems achieves a net flux of CO2 out of the atmosphere. In contrast to LCA, CDR accounting uses expansive system boundaries and excludes avoidance credits to distinguish between systems that achieve net removal from those that only contribute to emissions mitigation. This primer discusses a framework and set of metrics for CDR accounting.

BT - One Earth DA - 09/2024 DO - 10.1016/j.oneear.2024.08.012 IS - 9 N2 -

Carbon dioxide removal (CDR) technologies are essential to address climate change and serve to compensate for legacy and hard-to-abate greenhouse gas emissions. Although near-term emissions reductions should be the priority, development and deployment of CDR must proceed now to ensure that relevant technologies are ready at scale in the future. Despite a rapid growth in CDR purchases, no single standardized methodology for evaluating project-level net CO2 removal exists. Life cycle assessment (LCA) frequently produces net-negative emissions footprints, but only a small subset of those systems achieves a net flux of CO2 out of the atmosphere. In contrast to LCA, CDR accounting uses expansive system boundaries and excludes avoidance credits to distinguish between systems that achieve net removal from those that only contribute to emissions mitigation. This primer discusses a framework and set of metrics for CDR accounting.

PB - Elsevier BV PY - 2024 SP - 1494 EP - 1500 T2 - One Earth TI - Carbon accounting for carbon dioxide removal UR - http://dx.doi.org/10.1016/j.oneear.2024.08.012 VL - 7 SN - 2590-3322 ER -