Sun et al. (2025): Multiple Lines of Evidence Reveal Rapid, Seasonal Watershed Responses to Enhanced Weathering
Fengchao Sun, Robert Rioux, Tim Suhrhoff, Wyatt Tatge, Boriana Kalderon-Asael, Quinn Zacharias, William Miller-Brown, Aaron MacDonald, Esmeralda Garcia, Jamie Shanley, Peter Raymond, Noah Planavsky and James Saiers, IN: ResearchSquare, https://doi.org/10.21203/rs.3.rs-8224816/v1
Enhanced rock weathering (ERW) is a natural carbon dioxide removal (CDR) approach that captures CO₂ by accelerating silicate weathering using crushed rocks. A major question on the efficacy of ERW is how fast and efficient it is at transporting the products of weathering to drainage networks, and ultimately the ocean. Using a novel whole watershed experiment, the authors report multiple lines of evidence of rapid and pronounced streamwater chemistry responses within weeks of basalt application (20 t ha⁻¹) to 15% of a 59-ha temperate, headwater catchment.