Performance Evaluation of Simplified Infiltration Models Under Changing Initial Conditions for Event-Based Hydrological Models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00372801" target="_blank" >RIV/68407700:21110/23:00372801 - isvavai.cz</a>

Výsledek na webu

<a href="https://agu.confex.com/agu/fm23/meetingapp.cgi/Paper/1243957" target="_blank" >https://agu.confex.com/agu/fm23/meetingapp.cgi/Paper/1243957</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Performance Evaluation of Simplified Infiltration Models Under Changing Initial Conditions for Event-Based Hydrological Models

Popis výsledku v původním jazyce

This study evaluates the performance of Green-Ampt and Philip infiltration models using recently (2022) developed Czech soil properties maps and existing pedotransfer functions. The aim was to compare the routing of infiltration during extreme precipitation events in the context of climate change. The parameters of the Mualem-van Genuchten model were derived from the soil properties using UN-SODA and EU-HYDI pedotransfer functions, and the hydraulic conductivity was estimated using a HYPRES database. The parameters for the Green-Ampt and Philip models were obtained using analytical procedures and fitting infiltration curves, respectively. The performance of the models was evaluated using the Richards equation simulated by the HYDRUS1D model for a simple rainfall scenario and four initial conditions. The study highlights the importance of accurate estimation of soil properties, hydraulic conductivity, and choice of source soil properties database in hydrological modelling and provides insight into the suitability of simplified infiltration models for predicting soil water dynamics. This study has been supported by Grant of Technology Agency of the Czech Republic CK04000144 and CTU Student Grant Competition SGS23/155/OHK1/3T/11

Název v anglickém jazyce

Performance Evaluation of Simplified Infiltration Models Under Changing Initial Conditions for Event-Based Hydrological Models

Popis výsledku anglicky

This study evaluates the performance of Green-Ampt and Philip infiltration models using recently (2022) developed Czech soil properties maps and existing pedotransfer functions. The aim was to compare the routing of infiltration during extreme precipitation events in the context of climate change. The parameters of the Mualem-van Genuchten model were derived from the soil properties using UN-SODA and EU-HYDI pedotransfer functions, and the hydraulic conductivity was estimated using a HYPRES database. The parameters for the Green-Ampt and Philip models were obtained using analytical procedures and fitting infiltration curves, respectively. The performance of the models was evaluated using the Richards equation simulated by the HYDRUS1D model for a simple rainfall scenario and four initial conditions. The study highlights the importance of accurate estimation of soil properties, hydraulic conductivity, and choice of source soil properties database in hydrological modelling and provides insight into the suitability of simplified infiltration models for predicting soil water dynamics. This study has been supported by Grant of Technology Agency of the Czech Republic CK04000144 and CTU Student Grant Competition SGS23/155/OHK1/3T/11

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

10501 - Hydrology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů