EGU2020-19467
https://doi.org/10.5194/egusphere-egu2020-19467
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Understanding the Dynamics of Denitrification with high-resolution Simulations

Olaf Ippisch1, Jan Zawallich1, Peter Dörsch2, Steffen Schlüter3, Marcus A. Horn4, and Hans-Jörg Vogel3
Olaf Ippisch et al.
  • 1TU Clausthal, Institute for Mathematics, Scientific Computing, Clausthal-Zellerfeld, Germany (olaf.ippisch@tu-clausthal.de)
  • 2Norwegian University of Life Sciences, Faculty for Environmental Sciences and Natural Resource Management, Ås, Norway
  • 3Helmholtz-Centre for Environmental Research - UFZ , Department Soil System Science, Halle, Germany
  • 4Leibniz Universität Hannover, Institute of Microbiology, Hannover, Germany

Denitrification in unsaturated soils is widely assumed to be a result a result of the formation of so-called hot spots. However, this is a hypothesis, which is hard to test experimentally. Furthermore a better understanding of the microscale dynamics might be very helpful to derive better models at the macroscale.

Experiments have been conducted, where artificial aggregates from sintered glas have been inocculated with microorganisms and been placed in environments with different oxygen availabilities. Very high-resolution simulations are conducted to reproduce the dynamic of the generation of nitric and nitrous oxide based on a model of microbial growth parametrised with experimental data from batch experiments. The simulations allow a detailed analysis of the local and temporal dynamics of denitrification inside the aggregates.

How to cite: Ippisch, O., Zawallich, J., Dörsch, P., Schlüter, S., Horn, M. A., and Vogel, H.-J.: Understanding the Dynamics of Denitrification with high-resolution Simulations, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-19467, https://doi.org/10.5194/egusphere-egu2020-19467, 2020.