Climate control of multidecadal variability in river discharge and precipitation in western europe
The influence of large-scale climate variability on winter river discharge and precipitation across western Europe is investigated. We analyze 60 years of monthly precipitation and river flow data from 18 major western-European rivers and its relationship with dominant teleconnection patterns and cl...
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/186328 2024-02-11T10:06:36+01:00 Climate control of multidecadal variability in river discharge and precipitation in western europe JALON ROJAS, Isabel CASTELLE, Bruno 2021-01-21 https://oskar-bordeaux.fr/handle/20.500.12278/186328 https://hdl.handle.net/20.500.12278/186328 https://doi.org/10.3390/w13030257 EN eng 20734441 https://oskar-bordeaux.fr/handle/20.500.12278/186328 doi:10.3390/w13030257 Attribution 3.0 United States open http://creativecommons.org/licenses/by/3.0/us/ CC BY multidecadal variability river discharge precipitation climate indices NAO WEPA western Europe Sciences de l'environnement Article de revue 2021 ftoskarbordeaux https://doi.org/20.500.12278/18632810.3390/w13030257 2024-01-23T23:30:45Z The influence of large-scale climate variability on winter river discharge and precipitation across western Europe is investigated. We analyze 60 years of monthly precipitation and river flow data from 18 major western-European rivers and its relationship with dominant teleconnection patterns and climate indices in this region. Results show that winter river flow is characterized by large interannual variability, best correlates with (a) the North Atlantic Oscillation (NAO) at the far-northern (R up to 0.56) and southern latitudes (R up to −0.72), and (b) the West Europe Pressure Anomaly (WEPA) at the middle and northern latitudes, from 42◦ N to 55◦ N (R up to 0.83). These indices also explain the interannual variability in autumn and spring discharge in rivers characterized by secondary floods. Compared to the other leading modes of atmospheric variability, WEPA increases the correlations with winter precipitation up to 0.8 in many regions of western and central Europe. A positive WEPA corresponds to a southward shift and an intensification of the Icelandic-Low/Azores-High dipole, driving enhanced precipitation and river discharge in these regions. The correlations with precipitation are slightly higher than those with river discharge, particularly in France, with clear latitudinal gradient. This trend suggests that water storage variability and other catchment characteristics may also influence the interannual variability of river discharge. Seasonal forecasting of the WEPA and NAO winter indices can become a powerful tool in anticipating hydrological risks in this region. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Article in Journal/Newspaper North Atlantic North Atlantic oscillation OSKAR Bordeaux (Open Science Knowledge ARchive) Winter River ENVELOPE(-113.003,-113.003,64.501,64.501) Water 13 3 257 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
multidecadal variability river discharge precipitation climate indices NAO WEPA western Europe Sciences de l'environnement |
spellingShingle |
multidecadal variability river discharge precipitation climate indices NAO WEPA western Europe Sciences de l'environnement JALON ROJAS, Isabel CASTELLE, Bruno Climate control of multidecadal variability in river discharge and precipitation in western europe |
topic_facet |
multidecadal variability river discharge precipitation climate indices NAO WEPA western Europe Sciences de l'environnement |
description |
The influence of large-scale climate variability on winter river discharge and precipitation across western Europe is investigated. We analyze 60 years of monthly precipitation and river flow data from 18 major western-European rivers and its relationship with dominant teleconnection patterns and climate indices in this region. Results show that winter river flow is characterized by large interannual variability, best correlates with (a) the North Atlantic Oscillation (NAO) at the far-northern (R up to 0.56) and southern latitudes (R up to −0.72), and (b) the West Europe Pressure Anomaly (WEPA) at the middle and northern latitudes, from 42◦ N to 55◦ N (R up to 0.83). These indices also explain the interannual variability in autumn and spring discharge in rivers characterized by secondary floods. Compared to the other leading modes of atmospheric variability, WEPA increases the correlations with winter precipitation up to 0.8 in many regions of western and central Europe. A positive WEPA corresponds to a southward shift and an intensification of the Icelandic-Low/Azores-High dipole, driving enhanced precipitation and river discharge in these regions. The correlations with precipitation are slightly higher than those with river discharge, particularly in France, with clear latitudinal gradient. This trend suggests that water storage variability and other catchment characteristics may also influence the interannual variability of river discharge. Seasonal forecasting of the WEPA and NAO winter indices can become a powerful tool in anticipating hydrological risks in this region. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
format |
Article in Journal/Newspaper |
author |
JALON ROJAS, Isabel CASTELLE, Bruno |
author_facet |
JALON ROJAS, Isabel CASTELLE, Bruno |
author_sort |
JALON ROJAS, Isabel |
title |
Climate control of multidecadal variability in river discharge and precipitation in western europe |
title_short |
Climate control of multidecadal variability in river discharge and precipitation in western europe |
title_full |
Climate control of multidecadal variability in river discharge and precipitation in western europe |
title_fullStr |
Climate control of multidecadal variability in river discharge and precipitation in western europe |
title_full_unstemmed |
Climate control of multidecadal variability in river discharge and precipitation in western europe |
title_sort |
climate control of multidecadal variability in river discharge and precipitation in western europe |
publishDate |
2021 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/186328 https://hdl.handle.net/20.500.12278/186328 https://doi.org/10.3390/w13030257 |
long_lat |
ENVELOPE(-113.003,-113.003,64.501,64.501) |
geographic |
Winter River |
geographic_facet |
Winter River |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
20734441 https://oskar-bordeaux.fr/handle/20.500.12278/186328 doi:10.3390/w13030257 |
op_rights |
Attribution 3.0 United States open http://creativecommons.org/licenses/by/3.0/us/ CC BY |
op_doi |
https://doi.org/20.500.12278/18632810.3390/w13030257 |
container_title |
Water |
container_volume |
13 |
container_issue |
3 |
container_start_page |
257 |
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1790604404330594304 |