Three new Enhanced Weathering papers, read together
Three enhanced weathering papers landed on CDRXIV in close succession, and read together they give me the clearest snapshot I’ve had of where this pathway actually stands in late 2025. The Suhrhoff et al. systematic review — with a co-author list that reads like a who’s-who of the field — puts a median area-normalized CDR flux of 0.84 tCO₂ ha⁻¹ yr⁻¹ on the table and converges global technical potential at ~0.2–2 GtCO₂ yr⁻¹. Cobo and Guillén-Gosálbez then argue that if you take empirical (rather than theoretical) weathering rates seriously in a life-cycle assessment, inland deployments starting in 2030 face a median 11-year lag before net CDR turns positive. And Gholamahmadi et al. offer the first structured synthesis of how ERW changes the soil’s ability to hold and move water — with mixed results that complicate the “co-benefits” story. ...