2 results for group: sara-vicca


Is the climate change mitigation effect of enhanced silicate weathering governed by biological processes?

Sara Vicca, Daniel S. Goll, Mathilde Hagens, Jens Hartmann, Ivan A. Janssens, Anna Neubeck, Josep Peñuelas, Sílvia Poblador,Jet Rijnders, Jordi Sardans, Eric Struyf,Philipp Swoboda, Jan Willem van Groenigen, Arthur Vienne, Erik Verbruggen Abstract A number of negative emission technologies (NETs) have been proposed to actively remove CO2 from the atmosphere, with enhanced silicate weathering (ESW) as a relatively new NET with considerable climate change mitigation potential. Models calibrated to ESW rates in lab experiments estimate the global potential for inorganic carbon sequestration by ESW at about 0.5–5 Gt CO2 year−1, suggesting ESW ...

Potential CO2 removal from enhanced weathering by ecosystem responses to powdered rock

Negative emission technologies underpin socioeconomic scenarios consistent with the Paris Agreement. Afforestation and bioenergy coupled with carbon dioxide (CO2) capture and storage are the main land negative emission technologies proposed, but the range of nature-based solutions is wider. Here we explore soil amendment with powdered basalt in natural ecosystems. Basalt is an abundant rock resource, which reacts with CO2 and removes it from the atmosphere. Besides, basalt improves soil fertility and thereby potentially enhances ecosystem carbon storage, rendering a global CO2 removal of basalt substantially larger than previously suggested. ...