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Ecohydrological particle model based on representative domains

Jackisch, Conrad; Zehe, Erwin

Non-uniform infiltration and subsurface flow in structured soils is observed in most natural settings. It arises from imperfect lateral mixing of fast advective flow in structures and diffusive flow in the soil matrix and remains one of the most challenging topics with respect to match observation and modelling of water and solutes at the plot scale. This study extends the fundamental introduction of a space domain random walk of water particles as an alternative approach to the Richards equation for diffusive flow (Zehe and Jackisch, 2016) to a stochastic–physical model framework simulating soil water flow in a representative, structured soil domain. The central objective of the proposed model is the simulation of non-uniform flow fingerprints in different ecohydrological settings and antecedent states by making maximum use of field observables for parameterisation. Avoiding non-observable parameters for macropore–matrix exchange, an energy-balance approach to govern film flow in representative flow paths is employed.We present the echoRD model (ecohydrological particle model based on representative domains) and a series of application test cases. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000084405
Veröffentlicht am 12.07.2018
DOI: 10.5194/hess-22-3639-2018
Zitationen: 6
Web of Science
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Wasser und Gewässerentwicklung (IWG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1027-5606, 1607-7938
KITopen-ID: 1000084405
Erschienen in Hydrology and earth system sciences
Band 22
Heft 7
Seiten 3639–3662
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 06.07.2018
Nachgewiesen in Scopus
Web of Science
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