Articles | Volume 25, issue 3
Research article
25 Mar 2021
Research article |  | 25 Mar 2021

Simulation of reactive solute transport in the critical zone: a Lagrangian model for transient flow and preferential transport

Alexander Sternagel, Ralf Loritz, Julian Klaus, Brian Berkowitz, and Erwin Zehe

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Cited articles

Ackermann, M.: Hydrogeologische Systemanalyse und Grundwasserhaushalt des Weiherbach-Einzugsgebietes, Lehrstuhl für Angewandte Geologie der Universität Karlsruhe, Germany, 1998. 
Arias-Estévez, M., Lopez-Periago, E., Martinez-Carballo, E., Simal-Gandara, J., Mejuto, J. C., and Garcia-Rio, L.: The mobility and degradation of pesticides in soils and the pollution of groundwater resources, Agr. Ecosyst. Environ., 123, 247–260,, 2008. 
Bear, J.: Dynamics of fluids in porous media, Courier Corporation, New York, USA, 800 pp., ISBN 9780486131801, 2013. 
Bending, G. D. and Rodriguez-Cruz, M. S.: Microbial aspects of the interaction between soil depth and biodegradation of the herbicide isoproturon, Chemosphere, 66, 664–671,, 2007. 
Bending, G. D., Shaw, E., and Walker, A.: Spatial heterogeneity in the metabolism and dynamics of isoproturon degrading microbial communities in soil, Biol. Fert. Soils, 33, 484–489, 2001. 
Short summary
The key innovation of the study is a method to simulate reactive solute transport in the vadose zone within a Lagrangian framework. We extend the LAST-Model with a method to account for non-linear sorption and first-order degradation processes during unsaturated transport of reactive substances in the matrix and macropores. Model evaluations using bromide and pesticide data from irrigation experiments under different flow conditions on various timescales show the feasibility of the method.