Ammonia emissions from urea fertilization – multi-annual micrometeorological measurements across Germany [Dataset]

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Description:

To evaluate the accuracy of the current emission factor (EF) for conventional urea in Germany, ammonia (NH₃) emissions were measured using the integrated horizontal flux (IHF) method with ALPHA passive samplers following urea applications in 2021–2023. Measurements were conducted across six agroecological regions under winter wheat cropping, with nitrogen application rates of 145–230 kg N ha⁻¹, resulting in 51 campaigns. Emission rates (NH₃Ninput) ranged from 1.1% to 20.7% (median 4.8%, mean 8.5%), significantly lower than the 2019 IPCC (14.2%) and 2023 EMEP (16.1% for pH < 7) estimates. NH₃Ninput was influenced by soil texture and rainfall but not nitrogen application rates, with higher emissions observed on sandy soils. These findings suggest current EFs overestimate NH₃ emissions from urea applied to winter wheat in Germany. While emissions may vary due to inter-annual and environmental factors, a national EF for Germany could improve NH₃ emission estimates and the evaluation of mitigation strategies.

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Auteur(s) :

Kemmann, Björn

Kemmann, Björn

University of Alberta Technische Universität Berlin

, Brokötter, Julian

Brokötter, Julian

Christian-Albrecht University

, Götze, Hannah

Götze, Hannah

Johann Heinrich von Thünen-Institut

, Kelsch, Alexander

Kelsch, Alexander

Forschungszentrum Jülich

, Frößl, Jonas

Frößl, Jonas

University of Hohenheim

, Riesch, Sandra

Riesch, Sandra

Technical University of Munich

, Heinemann, Paul

Heinemann, Paul

Technical University of Munich

, Kukowski, Sina

Kukowski, Sina

Johann Heinrich von Thünen-Institut

, Pacholski, Andreas

Pacholski, Andreas

Johann Heinrich von Thünen-Institut

et Flessa, Heinz

Flessa, Heinz

Johann Heinrich von Thünen-Institut

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Dépôt source:

Zenodo

Éditeur(s):

Zenodo

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License:

Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode

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URL:

https://zenodo.org/doi/10.5281/zenodo.14246051

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Date de publication:

2025-04-01

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Identificateur:

https://doi.org/10.5281/zenodo.14246051

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Citation selon les normes APA:

Ammonia emissions from urea fertilization – multi-annual micrometeorological measurements across Germany [Dataset]. (2025). [Data set]. Zenodo. https://zenodo.org/doi/10.5281/zenodo.14246051

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