Increasing risks of extreme salt intrusion events across European estuaries in a warming climate

Abstract Over the last decade, many estuaries worldwide have faced increased salt intrusion as a result of human activities and a changing climate. Despite its socio-economic importance, our current projections on the statistics of future salt intrusion are limited to case studies in certain regions...

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Main Authors: Jiyong Lee, Bouke Biemond, Huib de Swart, Henk A. Dijkstra
Format: Article
Language:English
Published: Nature Portfolio 2024-01-01
Series:Communications Earth & Environment
Online Access:https://doi.org/10.1038/s43247-024-01225-w
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author Jiyong Lee
Bouke Biemond
Huib de Swart
Henk A. Dijkstra
author_facet Jiyong Lee
Bouke Biemond
Huib de Swart
Henk A. Dijkstra
author_sort Jiyong Lee
collection DOAJ
description Abstract Over the last decade, many estuaries worldwide have faced increased salt intrusion as a result of human activities and a changing climate. Despite its socio-economic importance, our current projections on the statistics of future salt intrusion are limited to case studies in certain regions. Here, we show that, compared to present-day conditions, river discharge in the summer months is projected to be reduced by 10–60% in 17 out of 22 investigated major European river basins at the end of the 21st century under the high CO2 emission scenario (Shared Socioeconomic Pathways, SSP 3-7.0). We find that the reduced future river discharge in the summer months, in turn, increases salt intrusion lengths by 10–30% in 9 representative European estuaries at low and mid latitudes. Our analysis further indicates that the European estuaries are projected to experience more than five times more frequent extreme salt intrusion events.
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spelling doaj.art-de814112d78748dd83d9e0b101420bbf2024-03-05T20:27:53ZengNature PortfolioCommunications Earth & Environment2662-44352024-01-01511710.1038/s43247-024-01225-wIncreasing risks of extreme salt intrusion events across European estuaries in a warming climateJiyong Lee0Bouke Biemond1Huib de Swart2Henk A. Dijkstra3Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht UniversityInstitute for Marine and Atmospheric research Utrecht (IMAU), Utrecht UniversityInstitute for Marine and Atmospheric research Utrecht (IMAU), Utrecht UniversityInstitute for Marine and Atmospheric research Utrecht (IMAU), Utrecht UniversityAbstract Over the last decade, many estuaries worldwide have faced increased salt intrusion as a result of human activities and a changing climate. Despite its socio-economic importance, our current projections on the statistics of future salt intrusion are limited to case studies in certain regions. Here, we show that, compared to present-day conditions, river discharge in the summer months is projected to be reduced by 10–60% in 17 out of 22 investigated major European river basins at the end of the 21st century under the high CO2 emission scenario (Shared Socioeconomic Pathways, SSP 3-7.0). We find that the reduced future river discharge in the summer months, in turn, increases salt intrusion lengths by 10–30% in 9 representative European estuaries at low and mid latitudes. Our analysis further indicates that the European estuaries are projected to experience more than five times more frequent extreme salt intrusion events.https://doi.org/10.1038/s43247-024-01225-w
spellingShingle Jiyong Lee
Bouke Biemond
Huib de Swart
Henk A. Dijkstra
Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
Communications Earth & Environment
title Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
title_full Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
title_fullStr Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
title_full_unstemmed Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
title_short Increasing risks of extreme salt intrusion events across European estuaries in a warming climate
title_sort increasing risks of extreme salt intrusion events across european estuaries in a warming climate
url https://doi.org/10.1038/s43247-024-01225-w
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