title: European-scale modelling of groundwater denitrification and associated N₂O production.
abstract: This paper presents a spatially explicit model for simulating the fate of nitrogen (N) in soil and groundwater and nitrous oxide (N(2)O) production in groundwater with a 1 km resolution at the European scale. The results show large heterogeneity of nitrate outflow from groundwater to surface water and production of N(2)O. This heterogeneity is the result of variability in agricultural and hydrological systems. Large parts of Europe have no groundwater aquifers and short travel times from soil to surface water. In these regions no groundwater denitrification and N(2)O production is expected. Predicted N leaching (16% of the N inputs) and N(2)O emissions (0.014% of N leaching) are much less than the IPCC default leaching rate and combined emission factor for groundwater and riparian zones, respectively.
authors.affiliation: Ecology & Biodiversity, Department of Biology, Utrecht University, P.O. Box 800.84, 3508 TB Utrecht, The Netherlands.
authors.forename: J A
authors.initials: JA
authors.lastname: Keuskamp
authors.forename: G
authors.initials: G
authors.lastname: van Drecht
authors.forename: A F
authors.initials: AF
authors.lastname: Bouwman
mesh_terms: D058440:Denitrification; D004784:Environmental Monitoring; D005060:Europe; D060587:Groundwater / Q000737:chemistry*; D008956:Models, Chemical; D009584:Nitrogen / Q000032:analysis / Q000737:chemistry*; D009585:Nitrogen Dioxide / Q000032:analysis / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical; D009584:Nitrogen; D009585:Nitrogen Dioxide