Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point
Introduction: Pressure on groundwater resources is increasing rapidly by population growth and climate change effects. Thus, it is urgent to quantify their availability and determine their dynamics at a global scale to assess the impacts of climate change or anthropogenically induced pressure, and t...
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1061420/full |
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| author | Estanislao Pujades Rohini Kumar Timo Houben Miao Jing Oldrich Rakovec Oldrich Rakovec Thomas Kalbacher Sabine Attinger Sabine Attinger |
| author_facet | Estanislao Pujades Rohini Kumar Timo Houben Miao Jing Oldrich Rakovec Oldrich Rakovec Thomas Kalbacher Sabine Attinger Sabine Attinger |
| author_sort | Estanislao Pujades |
| collection | DOAJ |
| description | Introduction: Pressure on groundwater resources is increasing rapidly by population growth and climate change effects. Thus, it is urgent to quantify their availability and determine their dynamics at a global scale to assess the impacts of climate change or anthropogenically induced pressure, and to support water management strategies. In this context, regional hydrogeological numerical models become essential to simulate the behavior of groundwater resources. However, the construction of global hydrogeological models faces a lot of challenges that affect their accuracy.Methods: In this work, using the German portion of the Upper Danube Basin (∼43,000 km2) we outline common challenges encountered in parameterizing a regional-scale groundwater model, and provide an innovative approach to efficiently tackle such challenges. The hydrogeological model of the Danube consists of the groundwater finite element code OpenGeoSys forced by the groundwater recharge of the surface hydrological model mHM.Results: The main novelties of the suggested approach are 1) the use of spectral analyses of the river baseflow and a steady state calibration taking as reference the topography to constraint the hydraulic parameters and facilitate the calibration process, and 2) the calibration of the hydraulic parameters for a transient state model by considering parameters derived from the piezometric head evolution.Discussion/conclusion: The results show that the proposed methodology is useful to build a reliable large-scale groundwater model. Finally, the suggested approach is compared with the standard one used by other authors for the construction of global models. The comparison shows that the proposed approach allows for obtaining more reliable results, especially in mountainous areas. |
| first_indexed | 2024-04-10T20:01:41Z |
| format | Article |
| id | doaj.art-a4e5902bcfd24fd490fdd2aa7876503a |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T20:01:41Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-a4e5902bcfd24fd490fdd2aa7876503a2023-01-27T05:12:43ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011110.3389/feart.2023.10614201061420Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting pointEstanislao Pujades0Rohini Kumar1Timo Houben2Miao Jing3Oldrich Rakovec4Oldrich Rakovec5Thomas Kalbacher6Sabine Attinger7Sabine Attinger8Department of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanyDepartment of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanyDepartment of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanySchool of Earth Science and Engineering, Hohai University, Nanjing, ChinaDepartment of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanyFaculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, CzechiaDepartment of Environmental Informatics (ENVINF), Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanyDepartment of Computational Hydrosystems, Helmholtz Centre for Environmental Research-UFZ, Leipzig, GermanyInstitute of Environmental Science and Geography, University of Potsdam, Potsdam, GermanyIntroduction: Pressure on groundwater resources is increasing rapidly by population growth and climate change effects. Thus, it is urgent to quantify their availability and determine their dynamics at a global scale to assess the impacts of climate change or anthropogenically induced pressure, and to support water management strategies. In this context, regional hydrogeological numerical models become essential to simulate the behavior of groundwater resources. However, the construction of global hydrogeological models faces a lot of challenges that affect their accuracy.Methods: In this work, using the German portion of the Upper Danube Basin (∼43,000 km2) we outline common challenges encountered in parameterizing a regional-scale groundwater model, and provide an innovative approach to efficiently tackle such challenges. The hydrogeological model of the Danube consists of the groundwater finite element code OpenGeoSys forced by the groundwater recharge of the surface hydrological model mHM.Results: The main novelties of the suggested approach are 1) the use of spectral analyses of the river baseflow and a steady state calibration taking as reference the topography to constraint the hydraulic parameters and facilitate the calibration process, and 2) the calibration of the hydraulic parameters for a transient state model by considering parameters derived from the piezometric head evolution.Discussion/conclusion: The results show that the proposed methodology is useful to build a reliable large-scale groundwater model. Finally, the suggested approach is compared with the standard one used by other authors for the construction of global models. The comparison shows that the proposed approach allows for obtaining more reliable results, especially in mountainous areas.https://www.frontiersin.org/articles/10.3389/feart.2023.1061420/fullregional numerical modelinghydrological modellingmHM modelOpenGeoSysgroundwater modellingspectral analysis |
| spellingShingle | Estanislao Pujades Rohini Kumar Timo Houben Miao Jing Oldrich Rakovec Oldrich Rakovec Thomas Kalbacher Sabine Attinger Sabine Attinger Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point Frontiers in Earth Science regional numerical modeling hydrological modelling mHM model OpenGeoSys groundwater modelling spectral analysis |
| title | Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point |
| title_full | Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point |
| title_fullStr | Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point |
| title_full_unstemmed | Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point |
| title_short | Towards the construction of representative regional hydro(geo)logical numerical models: Modelling the upper Danube basin as a starting point |
| title_sort | towards the construction of representative regional hydro geo logical numerical models modelling the upper danube basin as a starting point |
| topic | regional numerical modeling hydrological modelling mHM model OpenGeoSys groundwater modelling spectral analysis |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1061420/full |
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