Influence of multidecadal variability on high and low flows: the case of the Seine basin

The multidecadal hydroclimate variations of the Seine basin since the 1850s are investigated. Given the scarcity of long-term hydrological observations, a hydrometeorological reconstruction is developed based on hydrological modeling and a method that combines the results of a downscaled long-term a...

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Published in:Hydrology and Earth System Sciences
Main Authors: R. Bonnet, J. Boé, F. Habets
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2020
Subjects:
T
G
Online Access:https://doi.org/10.5194/hess-24-1611-2020
https://doaj.org/article/ad968ca4f2cb4876a8db04113dff5efd
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spelling ftdoajarticles:oai:doaj.org/article:ad968ca4f2cb4876a8db04113dff5efd 2023-05-15T17:36:16+02:00 Influence of multidecadal variability on high and low flows: the case of the Seine basin R. Bonnet J. Boé F. Habets 2020-04-01T00:00:00Z https://doi.org/10.5194/hess-24-1611-2020 https://doaj.org/article/ad968ca4f2cb4876a8db04113dff5efd EN eng Copernicus Publications https://www.hydrol-earth-syst-sci.net/24/1611/2020/hess-24-1611-2020.pdf https://doaj.org/toc/1027-5606 https://doaj.org/toc/1607-7938 doi:10.5194/hess-24-1611-2020 1027-5606 1607-7938 https://doaj.org/article/ad968ca4f2cb4876a8db04113dff5efd Hydrology and Earth System Sciences, Vol 24, Pp 1611-1631 (2020) Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.5194/hess-24-1611-2020 2022-12-31T15:35:58Z The multidecadal hydroclimate variations of the Seine basin since the 1850s are investigated. Given the scarcity of long-term hydrological observations, a hydrometeorological reconstruction is developed based on hydrological modeling and a method that combines the results of a downscaled long-term atmospheric reanalysis and local observations of precipitation and temperature. This method improves previous attempts and provides a realistic representation of daily and monthly river flows. This new hydrometeorological reconstruction, available over more than 150 years while maintaining fine spatial and temporal resolutions, provides a tool to improve our understanding of the multidecadal hydrological variability in the Seine basin, as well as its influence on high and low flows. This long-term reconstruction allows analysis of the strong multidecadal variations of the Seine river flows. The main hydrological mechanisms at the origin of these variations are highlighted. Spring precipitation plays a central role by directly influencing not only the multidecadal variability in spring flows but also soil moisture and groundwater recharge, which then regulate summer river flows. These multidecadal hydroclimate variations in the Seine basin are driven by anomalies in large-scale atmospheric circulation, which themselves appear to be influenced by sea surface temperature anomalies over the North Atlantic and the North Pacific. The multidecadal hydroclimate variations also influence high and low flows over the last 150 years. The analysis of two particularly severe historical droughts, the 1921 and the 1949 events, illustrates how long-term hydroclimate variations may impact short-term drought events, particularly through groundwater–river exchanges. The multidecadal hydroclimate variations described in this study, probably of internal origin, could play an important role in the evolution of water resources in the Seine basin in the coming decades. It is therefore essential to take the associated uncertainties into account ... Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Pacific Hydrology and Earth System Sciences 24 4 1611 1631
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Technology
T
Environmental technology. Sanitary engineering
TD1-1066
Geography. Anthropology. Recreation
G
Environmental sciences
GE1-350
spellingShingle Technology
T
Environmental technology. Sanitary engineering
TD1-1066
Geography. Anthropology. Recreation
G
Environmental sciences
GE1-350
R. Bonnet
J. Boé
F. Habets
Influence of multidecadal variability on high and low flows: the case of the Seine basin
topic_facet Technology
T
Environmental technology. Sanitary engineering
TD1-1066
Geography. Anthropology. Recreation
G
Environmental sciences
GE1-350
description The multidecadal hydroclimate variations of the Seine basin since the 1850s are investigated. Given the scarcity of long-term hydrological observations, a hydrometeorological reconstruction is developed based on hydrological modeling and a method that combines the results of a downscaled long-term atmospheric reanalysis and local observations of precipitation and temperature. This method improves previous attempts and provides a realistic representation of daily and monthly river flows. This new hydrometeorological reconstruction, available over more than 150 years while maintaining fine spatial and temporal resolutions, provides a tool to improve our understanding of the multidecadal hydrological variability in the Seine basin, as well as its influence on high and low flows. This long-term reconstruction allows analysis of the strong multidecadal variations of the Seine river flows. The main hydrological mechanisms at the origin of these variations are highlighted. Spring precipitation plays a central role by directly influencing not only the multidecadal variability in spring flows but also soil moisture and groundwater recharge, which then regulate summer river flows. These multidecadal hydroclimate variations in the Seine basin are driven by anomalies in large-scale atmospheric circulation, which themselves appear to be influenced by sea surface temperature anomalies over the North Atlantic and the North Pacific. The multidecadal hydroclimate variations also influence high and low flows over the last 150 years. The analysis of two particularly severe historical droughts, the 1921 and the 1949 events, illustrates how long-term hydroclimate variations may impact short-term drought events, particularly through groundwater–river exchanges. The multidecadal hydroclimate variations described in this study, probably of internal origin, could play an important role in the evolution of water resources in the Seine basin in the coming decades. It is therefore essential to take the associated uncertainties into account ...
format Article in Journal/Newspaper
author R. Bonnet
J. Boé
F. Habets
author_facet R. Bonnet
J. Boé
F. Habets
author_sort R. Bonnet
title Influence of multidecadal variability on high and low flows: the case of the Seine basin
title_short Influence of multidecadal variability on high and low flows: the case of the Seine basin
title_full Influence of multidecadal variability on high and low flows: the case of the Seine basin
title_fullStr Influence of multidecadal variability on high and low flows: the case of the Seine basin
title_full_unstemmed Influence of multidecadal variability on high and low flows: the case of the Seine basin
title_sort influence of multidecadal variability on high and low flows: the case of the seine basin
publisher Copernicus Publications
publishDate 2020
url https://doi.org/10.5194/hess-24-1611-2020
https://doaj.org/article/ad968ca4f2cb4876a8db04113dff5efd
geographic Pacific
geographic_facet Pacific
genre North Atlantic
genre_facet North Atlantic
op_source Hydrology and Earth System Sciences, Vol 24, Pp 1611-1631 (2020)
op_relation https://www.hydrol-earth-syst-sci.net/24/1611/2020/hess-24-1611-2020.pdf
https://doaj.org/toc/1027-5606
https://doaj.org/toc/1607-7938
doi:10.5194/hess-24-1611-2020
1027-5606
1607-7938
https://doaj.org/article/ad968ca4f2cb4876a8db04113dff5efd
op_doi https://doi.org/10.5194/hess-24-1611-2020
container_title Hydrology and Earth System Sciences
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