Jessen et al. (2026): Subsoil acidity causes long delays in inorganic carbon sequestration by Enhanced Weathering
Søren Jessen, Rasmus Jakobsen, Majken Looms, Per Ambus and Dieke Postma, IN: arXiv, https://doi.org/10.48550/arXiv.2607.01835
While a looming atmospheric CO₂ overshoot calls for immediate carbon sequestration, delays associated to Enhanced Weathering (EW) carbon dioxide removal are being investigated. Topsoil acidity is already known to delay EW carbon sequestration, but subsoil acidity remains underexplored. Using century-long agricultural liming of formerly acidic heathland as a proxy for EW, this study provides empirical evidence of subsoil-imposed delays.