Improving nitrogen cycling in a land surface model (CLM5) to quantify soil N2O, NO, and NH3 emissions from enhanced rock weathering with croplands
Maria Val Martin,Elena Blanc-Betes,Ka Ming Fung,Euripides P. Kantzas,Ilsa B. Kantola,Isabella Chiaravalloti,Lyla L. Taylor,Louisa K. Emmons,William R. Wieder,Noah J. Planavsky,Michael D. Masters,Evan H. DeLucia,Amos P. K. Tai,and David J. Beerling
Earth and Environmental Sciences Programme, Faculty of Science, The Chinese University of Hong Kong, Sha Tin, Hong Kong, China
State Key Laboratory of Agrobiotechnology and Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Sha Tin, Hong Kong, China
David J. Beerling
Leverhulme Centre for Climate Change Mitigation, School of Biosciences, University of Sheffield, Sheffield, UK
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Enhanced rock weathering (ERW) is a CO2 removal strategy that involves applying crushed rocks (e.g., basalt) to agricultural soils. However, unintended processes within the N cycle due to soil pH changes may affect the climate benefits of C sequestration. ERW could drive changes in soil emissions of non-CO2 GHGs (N2O) and trace gases (NO and NH3) that may affect air quality. We present a new improved N cycling scheme for the land model (CLM5) to evaluate ERW effects on soil gas N emissions.
Enhanced rock weathering (ERW) is a CO2 removal strategy that involves applying crushed rocks...
