Modelling Exchanges: From the Process Scale to the Regional Scale
2020
Massad, Raia Silvia | Tuzet, Andrée | Personne, Erwan | Bedos, Carole | Beekmann, Matthias | COLL, Isabelle | Drouet, Jean-Louis | Fortems-Cheiney, Audrey | Génermont, Sophie | Loubet, Benjamin | Saint-Jean, Sébastien
This chapter shows how the knowledge on the processes of surface exchange and atmospheric fate of different pollutants from agriculture or with an impact on agroecosystems is factored into mathematical simulation tools. It also considers the complexity of the interactions involved, the quantities of matter exchanged between agroecosystems and the atmosphere, and the measurement methods used to quantify them. The resulting models, which range from highly local (plant, leaf …) to global scales, ultimately enable to assess the impacts of changes in agricultural practices or climate change on pollutant exchanges between the atmosphere and agroecosystems. We describe different modelling approaches at the process, field, landscape and regional scales with different integrative levels. Model results are useful to understand how different processes interact and to predict how different environmental conditions, future climate or agricultural practices affect air quality. Models can also help identify levers for emission mitigation and estimate their efficiency.
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