Suhrhoff et al. (2024): A tool for assessing the sensitivity of soil-based approaches for quantifying enhanced weathering: a US case study
Tim Jesper Suhrhoff, Tom Reershemius, Jiuyuan Wang, Jacob S. Jordan, Christopher T. Reinhard, Noah J. Planavsky IN: Frontiers in Climate, https://doi.org/10.3389/fclim.2024.1346117
Enhanced weathering (EW) of silicate rocks spread onto managed lands as agricultural amendments is a promising carbon dioxide removal (CDR) approach. However, there is an obvious need for the development of tools for Measurement, Reporting, and Verification (MRV) before EW can be brought to scale. Shifts in the concentration of mobile elements measured in the solid phase of soils after application of EW feedstocks can potentially be used to track weathering and provide an estimate of the initial carbon dioxide removal of the system. To measure feedstock dissolution accurately it is necessary to control for the amount of feedstock originally present in the sample being analyzed. This can be achieved by measuring the concentration of immobile detrital elements in soil samples after feedstock addition.