Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France
Warming trends are responsible for an observed decrease of water discharge in southern France (northwestern Mediterranean). Ongoing climate change and the likely increase of water demand threaten the availability of water resources over the coming decades. Drought indices like the Reconnaissance Dro...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00063773 2023-05-15T17:36:06+02:00 Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France Labrousse, Camille Ludwig, Wolfgang Pinel, Sébastien Sadaoui, Mahrez Toreti, Andrea Lacquement, Guillaume 2022-12 electronic https://doi.org/10.5194/hess-26-6055-2022 https://noa.gwlb.de/receive/cop_mods_00063773 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062741/hess-26-6055-2022.pdf https://hess.copernicus.org/articles/26/6055/2022/hess-26-6055-2022.pdf eng eng Copernicus Publications Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-26-6055-2022 https://noa.gwlb.de/receive/cop_mods_00063773 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062741/hess-26-6055-2022.pdf https://hess.copernicus.org/articles/26/6055/2022/hess-26-6055-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/hess-26-6055-2022 2022-12-12T00:12:47Z Warming trends are responsible for an observed decrease of water discharge in southern France (northwestern Mediterranean). Ongoing climate change and the likely increase of water demand threaten the availability of water resources over the coming decades. Drought indices like the Reconnaissance Drought Index (RDI) are increasingly used in climate characterization studies, but little is known about the relationships between these indices, water resources, and the overall atmospheric circulation patterns. In this study, we investigate the relationships between the RDI, water discharge, and four atmospheric teleconnection patterns (TPs) for six coastal river basins in southern France, both for the historical period of the last 60 years and for a worst-case climatic scenario (RCP8.5) reaching the year 2100. We combine global and regional climate model (CGM and RCM, respectively) outputs with a set of observed climatic and hydrological data in order to investigate the past relationships between the RDI, water discharge, and TPs and to project their potential evolution in space and time. Results indicate that annual water discharge can be reduced by −49 % to −88 % by the end of the century under the extreme climate scenario conditions. Due to unequal links with TPs, the hydroclimatic evolution is unevenly distributed within the study area. Indeed a clustering analysis performed with the RDI time series detects two major climate clusters, separating the eastern and western part of the study region. The former indicates stronger relationships with the Atlantic TPs (e.g. the North Atlantic Oscillation (NAO) and the Scandinavian Oscillation (Scand) patterns), whereas the latter is more closely related to the Mediterranean TPs (Mediterranean Oscillation (MO) and Western Mediterranean Oscillation (WeMO)). The future climate simulations predict an antagonistic evolution in both clusters which are likely driven by decreasing trends of Scand and WeMO. The former provokes a general tendency of lower P in both clusters during ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Niedersächsisches Online-Archiv NOA Hydrology and Earth System Sciences 26 23 6055 6071 |
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article Verlagsveröffentlichung Labrousse, Camille Ludwig, Wolfgang Pinel, Sébastien Sadaoui, Mahrez Toreti, Andrea Lacquement, Guillaume Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
topic_facet |
article Verlagsveröffentlichung |
description |
Warming trends are responsible for an observed decrease of water discharge in southern France (northwestern Mediterranean). Ongoing climate change and the likely increase of water demand threaten the availability of water resources over the coming decades. Drought indices like the Reconnaissance Drought Index (RDI) are increasingly used in climate characterization studies, but little is known about the relationships between these indices, water resources, and the overall atmospheric circulation patterns. In this study, we investigate the relationships between the RDI, water discharge, and four atmospheric teleconnection patterns (TPs) for six coastal river basins in southern France, both for the historical period of the last 60 years and for a worst-case climatic scenario (RCP8.5) reaching the year 2100. We combine global and regional climate model (CGM and RCM, respectively) outputs with a set of observed climatic and hydrological data in order to investigate the past relationships between the RDI, water discharge, and TPs and to project their potential evolution in space and time. Results indicate that annual water discharge can be reduced by −49 % to −88 % by the end of the century under the extreme climate scenario conditions. Due to unequal links with TPs, the hydroclimatic evolution is unevenly distributed within the study area. Indeed a clustering analysis performed with the RDI time series detects two major climate clusters, separating the eastern and western part of the study region. The former indicates stronger relationships with the Atlantic TPs (e.g. the North Atlantic Oscillation (NAO) and the Scandinavian Oscillation (Scand) patterns), whereas the latter is more closely related to the Mediterranean TPs (Mediterranean Oscillation (MO) and Western Mediterranean Oscillation (WeMO)). The future climate simulations predict an antagonistic evolution in both clusters which are likely driven by decreasing trends of Scand and WeMO. The former provokes a general tendency of lower P in both clusters during ... |
format |
Article in Journal/Newspaper |
author |
Labrousse, Camille Ludwig, Wolfgang Pinel, Sébastien Sadaoui, Mahrez Toreti, Andrea Lacquement, Guillaume |
author_facet |
Labrousse, Camille Ludwig, Wolfgang Pinel, Sébastien Sadaoui, Mahrez Toreti, Andrea Lacquement, Guillaume |
author_sort |
Labrousse, Camille |
title |
Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
title_short |
Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
title_full |
Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
title_fullStr |
Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
title_full_unstemmed |
Declining water resources in response to global warming and changes in atmospheric circulation patterns over southern Mediterranean France |
title_sort |
declining water resources in response to global warming and changes in atmospheric circulation patterns over southern mediterranean france |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/hess-26-6055-2022 https://noa.gwlb.de/receive/cop_mods_00063773 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062741/hess-26-6055-2022.pdf https://hess.copernicus.org/articles/26/6055/2022/hess-26-6055-2022.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-26-6055-2022 https://noa.gwlb.de/receive/cop_mods_00063773 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062741/hess-26-6055-2022.pdf https://hess.copernicus.org/articles/26/6055/2022/hess-26-6055-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/hess-26-6055-2022 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
26 |
container_issue |
23 |
container_start_page |
6055 |
op_container_end_page |
6071 |
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1766135479591239680 |