An interdisciplinary model chain quantifies the footprint of global change on reservoir sedimentation

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Kilian Mouris
  • Sebastian Schwindt
  • María Herminia Pesci
  • Silke Wieprecht
  • Stefan Haun

Externe Organisationen

  • Universität Stuttgart
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Details

OriginalspracheEnglisch
Aufsatznummer20160
FachzeitschriftScientific reports
Jahrgang13
PublikationsstatusVeröffentlicht - 17 Nov. 2023

Abstract

Global change alters hydro-climatic conditions, affects land use, and contributes to more frequent droughts and floods. Large artificial reservoirs may effectively alleviate hydro-climatic extremes, but their storage capacities are threatened by sedimentation processes, which in turn are exacerbated by land use change. Envisioning strategies for sustainable reservoir management requires interdisciplinary model chains to emulate key processes driving sedimentation under global change scenarios. Therefore, we introduce a model chain for the long-term prediction of complex three-dimensional (3d) reservoir sedimentation considering concurrent catchment, hydro-climatic, and land-use conditions. Applied to a mountainous Mediterranean catchment, the model chain predicts increased sediment production and decreased discharge for high and medium emission pathways. Increased winter precipitation, accompanied by a transition from snowfall to rainfall, is projected to aggravate reduced summer precipitation, emphasizing a growing need for reservoirs. Additionally, higher winter precipitation proliferates sediment production and reservoir sedimentation. Land use change can outweigh the increased reservoir sedimentation originating from hydro-climatic change, which highlights the significance of localized actions to reduce sediment production. Finally, a 3d hydro-morphodynamic model provides insights into interactions between global change and reservoir sedimentation with spatially explicit information on future sedimentation patterns facilitating the implementation of management strategies.

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Ziele für nachhaltige Entwicklung

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An interdisciplinary model chain quantifies the footprint of global change on reservoir sedimentation. / Mouris, Kilian; Schwindt, Sebastian; Pesci, María Herminia et al.
in: Scientific reports, Jahrgang 13, 20160, 17.11.2023.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Mouris K, Schwindt S, Pesci MH, Wieprecht S, Haun S. An interdisciplinary model chain quantifies the footprint of global change on reservoir sedimentation. Scientific reports. 2023 Nov 17;13:20160. doi: 10.1038/s41598-023-47501-1
Mouris, Kilian ; Schwindt, Sebastian ; Pesci, María Herminia et al. / An interdisciplinary model chain quantifies the footprint of global change on reservoir sedimentation. in: Scientific reports. 2023 ; Jahrgang 13.
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title = "An interdisciplinary model chain quantifies the footprint of global change on reservoir sedimentation",
abstract = "Global change alters hydro-climatic conditions, affects land use, and contributes to more frequent droughts and floods. Large artificial reservoirs may effectively alleviate hydro-climatic extremes, but their storage capacities are threatened by sedimentation processes, which in turn are exacerbated by land use change. Envisioning strategies for sustainable reservoir management requires interdisciplinary model chains to emulate key processes driving sedimentation under global change scenarios. Therefore, we introduce a model chain for the long-term prediction of complex three-dimensional (3d) reservoir sedimentation considering concurrent catchment, hydro-climatic, and land-use conditions. Applied to a mountainous Mediterranean catchment, the model chain predicts increased sediment production and decreased discharge for high and medium emission pathways. Increased winter precipitation, accompanied by a transition from snowfall to rainfall, is projected to aggravate reduced summer precipitation, emphasizing a growing need for reservoirs. Additionally, higher winter precipitation proliferates sediment production and reservoir sedimentation. Land use change can outweigh the increased reservoir sedimentation originating from hydro-climatic change, which highlights the significance of localized actions to reduce sediment production. Finally, a 3d hydro-morphodynamic model provides insights into interactions between global change and reservoir sedimentation with spatially explicit information on future sedimentation patterns facilitating the implementation of management strategies.",
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AU - Mouris, Kilian

AU - Schwindt, Sebastian

AU - Pesci, María Herminia

AU - Wieprecht, Silke

AU - Haun, Stefan

N1 - Funding Information: This study was conducted within the DIRT-X project, which is part of AXIS, an ERA-NET initiated by JPI Climate and funded by FFG Austria, BMBF Germany, FORMAS Sweden, NWO NL, and RCN Norway with co-funding from the European Union (Grant No. 776608). The last author is indebted to the Baden-Württemberg Stiftung for financial support through the Elite Program for Postdocs. We also thank Nils Rüther, Kordula Schwarzwälder, Slaven Conevski, Behnam Balouchi, and Thomas Bosshard for providing input data, and Kristian Förster, Maria Fernanda Morales Oreamuno, Jadran Surac, André Maffert, and Anna Cerf for their help and productive discussions.

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N2 - Global change alters hydro-climatic conditions, affects land use, and contributes to more frequent droughts and floods. Large artificial reservoirs may effectively alleviate hydro-climatic extremes, but their storage capacities are threatened by sedimentation processes, which in turn are exacerbated by land use change. Envisioning strategies for sustainable reservoir management requires interdisciplinary model chains to emulate key processes driving sedimentation under global change scenarios. Therefore, we introduce a model chain for the long-term prediction of complex three-dimensional (3d) reservoir sedimentation considering concurrent catchment, hydro-climatic, and land-use conditions. Applied to a mountainous Mediterranean catchment, the model chain predicts increased sediment production and decreased discharge for high and medium emission pathways. Increased winter precipitation, accompanied by a transition from snowfall to rainfall, is projected to aggravate reduced summer precipitation, emphasizing a growing need for reservoirs. Additionally, higher winter precipitation proliferates sediment production and reservoir sedimentation. Land use change can outweigh the increased reservoir sedimentation originating from hydro-climatic change, which highlights the significance of localized actions to reduce sediment production. Finally, a 3d hydro-morphodynamic model provides insights into interactions between global change and reservoir sedimentation with spatially explicit information on future sedimentation patterns facilitating the implementation of management strategies.

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