Articles | Volume 14, issue 18
Biogeosciences, 14, 4161–4193, 2017
https://doi.org/10.5194/bg-14-4161-2017
Biogeosciences, 14, 4161–4193, 2017
https://doi.org/10.5194/bg-14-4161-2017
Research article
21 Sep 2017
Research article | 21 Sep 2017

Process-based modelling of NH3 exchange with grazed grasslands

Andrea Móring et al.

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Latest update: 05 Dec 2022
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Short summary
This study describes and evaluates a new ammonia (NH3) exchange model for grazed fields (GAG_field). GAG_field is able to simulate the main features of the observed NH3 fluxes. A sensitivity analysis for the non-meteorological model parameters showed that the sensitivity of the NH3 fluxes to a parameter varies among urine patches. Moreover, the fluxes modelled with a dynamic soil pH are similar if a constant pH 7.5 is used, suggesting a useful simplification for regional-scale model application.
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