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Dernière mise à jour : Mai 2018

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UMR ECOSYS - Ecologie fonctionnelle et écotoxicologie des agroécosystèmes

Poster 2 : MarkTheobald_AmmoniaEmissionModel

Poster 2
Mark R. Theobald1, David Makowski2, Carole Bedos3, Julie Ramanantenasoa3, Sophie Génermont3


The field-application of organic and mineral fertilisers is a large source of ammonia (NH3) emissions in Europe. In addition to management factors (e.g. fertiliser application rates), these emissions are strongly dependent on soil properties and climatic conditions. Including this dependence in the NH3 emission data used in chemical transport models (CTMs, such as the EMEP Unified Model) would improve the spatial and temporal distributions of the emissions. This is particularly important for climate change simulations since changes in air temperatures and precipitation patterns could have a large influence on the temporal and spatial distribution of NH3 emissions from fertilisers. In this work, meta-models have been developed for three fertiliser types (slurry, farm yard manure; FYM and the mineral fertiliser urea ammonium nitrate; UAN) using emission estimates from a modified version of the process-based model Volt’Air1,2 for a large range of European soil and climate conditions. These simple meta-models, which have a much shorter run-time than Volt’Air, are suitable for inclusion into the emission routines of CTMs using spatial soil data and the CTM meteorological data in order to better represent the spatial and temporal distributions of NH3 emissions.

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