Chen et al. (2023): Experimentally-calibrated estimation of CO2 removal potentials of enhanced weathering

Anqi Chen, Zhuo Chen, Zetian Qiu, Bo-Lin Lin IN: Science of The Total Environment 900, 165766, https://doi.org/10.1016/j.scitotenv.2023.165766

Previous models have estimated annual CDR potentials ranging from 1 to 95 Gt by 2100, with the maximum significantly exceeding the anthropogenic CO₂ emissions in 2021 (approximately 41 Gt). This raises concerns that a misconception may arise, suggesting active mitigations of CO₂ emissions might not be necessary. Herein, the authors address this issue by partitioning the CDR potential of EW into two components, flow-through and non-flow-through processes, and develop an experimentally-calibrated model to reduce discrepancies between previous theoretical and experimental weathering rates

LINK