Mayer et al. (2025): Carrying capacity as constraint for maximum efficient CDR in agricultural soils
K. Ulrich Mayer, Sergio A. Bea, Danyang Su, Jennifer Soong, Jenny Mills and Shawn G. Benner, IN: Research Square, https://doi.org/10.21203/rs.3.rs-7811095/v1
Enhanced Rock Weathering (ERW), in which crushed basaltic rocks are spread on croplands, has emerged as a promising carbon dioxide removal (CDR) approach to mitigate climate change impacts. Important known constraints on weathering rates include temperature, humidity, and feedstock grain size. However, the quantitative prediction and optimization of CDR is currently limited by uncertainty in the processes and rates governing weathering and export. Here, the authors propose to evaluate the product of effective groundwater recharge and dissolved inorganic carbon (DIC) concentrations as a measure of CDR.