Next Article in Journal
Available Flood Evacuation Time for High-Risk Areas in the Middle Reach of Chao Phraya River Basin
Next Article in Special Issue
Ecohydrological Changes and Resilience of a Shallow Lake Ecosystem under Intense Human Pressure and Recent Climate Change
Previous Article in Journal
Locating Spatial Opportunities for Nature-Based Solutions: A River Landscape Application
Previous Article in Special Issue
Multivariate Flood Risk Analysis at a Watershed Scale Considering Climatic Factors
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle

Coevolution of Hydrological Cycle Components under Climate Change: The Case of the Garonne River in France

1
Department of Soil and Environment, Swedish University of Agricultural Sciences (SLU—Sveriges lantbruksuniversitet), PO Box 7014, SE-750 07 Uppsala, Sweden
2
Department of Civil and Water Engineering, Université Laval, Québec, QC G1V 0A6, Canada
3
EcoLab, University of Toulouse, CNRS, INPT, UPS, Avenue de l’Agrobiopole, 31326 Castanet-Tolosan, France
*
Authors to whom correspondence should be addressed.
Water 2018, 10(12), 1870; https://doi.org/10.3390/w10121870
Received: 28 November 2018 / Revised: 12 December 2018 / Accepted: 13 December 2018 / Published: 17 December 2018
(This article belongs to the Special Issue Effects of Climate Change on Water Resources)
  |  
PDF [7906 KB, uploaded 18 December 2018]
  |     |  

Abstract

Climate change is suspected to impact water circulation within the hydrological cycle at catchment scale. A SWAT model approach to assess the evolution of the many hydrological components of the Garonne catchment (Southern France) is deployed in this study. Performance over the calibration period (2000–2010) are satisfactory, with Nash–Sutcliffe ranging from 0.55 to 0.94 or R2 from 0.86 to 0.98. Similar performance values are obtained in validation (1962–2000). Water cycle is first analyzed based on past observed climatic data (1962–2010) to understand its variations and geographical spread. Comparison is then conducted against the different trends obtained from a climate ensemble over 2010–2050. Results show a strong impact on green water, such as a reduction of the soil water content (SWC) and a substantial increase in evapotranspiration (ET) in winter. In summer, however, some part of the watershed faces lower ET fluxes because of a lack of SWC to answer the evapotranspiratory demand, highlighting possible future deficits of green water stocks. Blue water fluxes are found significantly decreasing during summer, when in winter, discharge in the higher part of the watershed is found increasing because of a lower snow stock associated to an increase of liquid precipitation, benefiting surface runoff. View Full-Text
Keywords: water cycle; climate change; SWAT modelling; coevolution of water resources; blue and green water water cycle; climate change; SWAT modelling; coevolution of water resources; blue and green water
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Grusson, Y.; Anctil, F.; Sauvage, S.; Sánchez Pérez, J.M. Coevolution of Hydrological Cycle Components under Climate Change: The Case of the Garonne River in France. Water 2018, 10, 1870.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top