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Modeling N2O emissions of complex cropland management in Western Europe using DayCent: Performance and scope for improvement by Marcio dos Reis Martins; Magdalena Necpalova; Christof Ammann; Nina Buchmann; Pierluigi Calanca; Christophe R. Flechard; Melannie D. Hartman; Maike Krauss; Philippe Le Roy; Paul Mäder; Regine Maier; Thierry Morvan; Bernard Nicolardot; Colin Skinner; Johan Six; Sonja G. Keel is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Modeling N2O emissions of complex cropland management in Western Europe using DayCent: Performance and scope for improvement about?

Under the United Nations Framework Convention on Climate Change (UNFCCC), industrialized countries and countries with economies in transition (so called Annex 1 countries) are encouraged to move towards more sophisticated approaches for national greenhouse gas reporting. To develop a model-based approach for estimating nitrous oxide (N2O) emissions from agricultural soils, model calibration is one of the first important steps. Extensive multisite field observations are necessary for this purpose, as agricultural management in Western Europe is complex (e.g., diverse crop rotations, different types of fertilizer and soil tillage). In the present study, we used ca. 24,000 daily N2O flux observations from six cropland sites, two in France and four in Switzerland, to conduct an automatic data-driven calibration of the biogeochemical model DayCent. This model is planned to be used for greenhouse gas reporting in the entire European Union as well as in Switzerland. After a site-specific calibration, a leave-one-out (LOO) cross-evaluation was conducted to assess the model’s ability to predict N2O emissions for sites it was not calibrated for. Mean observed N2O fluxes for 54 interactions o

Who reads Modeling N2O emissions of complex cropland management in Western Europe using DayCent: Performance and scope for improvement?

Author

Marcio dos Reis Martins; Magdalena Necpalova; Christof Ammann; Nina Buchmann; Pierluigi Calanca; Christophe R. Flechard; Melannie D. Hartman; Maike Krauss; Philippe Le Roy; Paul Mäder; Regine Maier; Thierry Morvan; Bernard Nicolardot; Colin Skinner; Johan Six; Sonja G. Keel

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)