Assessing the Impact of Climate Change on Groundwater Resources Using Groundwater Flow Models

2011 ◽  
pp. 63-75 ◽  
Author(s):  
Alper Elçi
Keyword(s):  
Climate Change ◽  
Groundwater Flow ◽  
Groundwater Resources ◽  
Flow Models ◽  
Impact Of Climate Change ◽  
The Impact

scholarly journals Evaluation of Climate Change Impact on Groundwater Recharge in Groundwater Regions in Taiwan

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1153
Author(s):  
Shih-Jung Wang ◽  
Cheng-Haw Lee ◽  
Chen-Feng Yeh ◽  
Yong Fern Choo ◽  
Hung-Wei Tseng
Keyword(s):  
Climate Change ◽  
Groundwater Recharge ◽  
Climate Change Impact ◽  
Groundwater Resources ◽  
Regression Equations ◽  
Impact Of Climate Change ◽  
Groundwater Systems ◽  
Change Impact ◽  
The Impact ◽  
Assessment Results

Climate change can directly or indirectly influence groundwater resources. The mechanisms of this influence are complex and not easily quantified. Understanding the effect of climate change on groundwater systems can help governments adopt suitable strategies for water resources. The baseflow concept can be used to relate climate conditions to groundwater systems for assessing the climate change impact on groundwater resources. This study applies the stable baseflow concept to the estimation of the groundwater recharge in ten groundwater regions in Taiwan, under historical and climate scenario conditions. The recharge rates at the main river gauge stations in the groundwater regions were assessed using historical data. Regression equations between rainfall and groundwater recharge quantities were developed for the ten groundwater regions. The assessment results can be used for recharge evaluation in Taiwan. The climate change estimation results show that climate change would increase groundwater recharge by 32.6% or decrease it by 28.9% on average under the climate scenarios, with respect to the baseline quantity in Taiwan. The impact of climate change on groundwater systems may be positive. This study proposes a method for assessing the impact of climate change on groundwater systems. The assessment results provide important information for strategy development in groundwater resources management.

scholarly journals Simulating the impact of climate change on the groundwater resources of the Magdalen Islands, Québec, Canada

2015 ◽  
Vol 3 ◽  
pp. 400-423 ◽  
Author(s):  
Jean-Michel Lemieux ◽  
Jalil Hassaoui ◽  
John Molson ◽  
René Therrien ◽  
Pierre Therrien ◽  
...  
Keyword(s):  
Climate Change ◽  
Groundwater Resources ◽  
Impact Of Climate Change ◽  
The Impact ◽  
Magdalen Islands

scholarly journals Impact of Climate Change on Groundwater Resources

2016 ◽  
pp. 196-221 ◽  
Author(s):  
C. P. Kumar
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Groundwater Resources ◽  
Climate Variables ◽  
Groundwater Levels ◽  
Impact Of Climate Change ◽  
Surface Water Resources ◽  
The Impact ◽  
The Relationship

Climate change poses uncertainties to the supply and management of water resources. While climate change affects surface water resources directly through changes in the major long-term climate variables such as air temperature, precipitation, and evapotranspiration, the relationship between the changing climate variables and groundwater is more complicated and poorly understood. The greater variability in rainfall could mean more frequent and prolonged periods of high or low groundwater levels, and saline intrusion in coastal aquifers due to sea level rise and resource reduction. This chapter presents the likely impact of climate change on groundwater resources and methodology to assess the impact of climate change on groundwater resources.

scholarly journals Analysis of the impact of climate change on groundwater related hydrological fluxes: a multi-model approach including different downscaling methods

2011 ◽  
Vol 15 (1) ◽  
pp. 21-38 ◽  
Author(s):  
S. Stoll ◽  
H. J. Hendricks Franssen ◽  
M. Butts ◽  
W. Kinzelbach
Keyword(s):  
Climate Change ◽  
Climate Model ◽  
Potential Evapotranspiration ◽  
Groundwater Resources ◽  
Small Catchment ◽  
Groundwater Levels ◽  
Northern Switzerland ◽  
Impact Of Climate Change ◽  
Hydrological Fluxes ◽  
The Impact

Abstract. Climate change related modifications in the spatio-temporal distribution of precipitation and evapotranspiration will have an impact on groundwater resources. This study presents a modelling approach exploiting the advantages of integrated hydrological modelling and a broad climate model basis. We applied the integrated MIKE SHE model on a perialpine, small catchment in northern Switzerland near Zurich. To examine the impact of climate change we forced the hydrological model with data from eight GCM-RCM combinations showing systematic biases which are corrected by three different statistical downscaling methods, not only for precipitation but also for the variables that govern potential evapotranspiration. The downscaling methods are evaluated in a split sample test and the sensitivity of the downscaling procedure on the hydrological fluxes is analyzed. The RCMs resulted in very different projections of potential evapotranspiration and, especially, precipitation. All three downscaling methods reduced the differences between the predictions of the RCMs and all corrected predictions showed no future groundwater stress which can be related to an expected increase in precipitation during winter. It turned out that especially the timing of the precipitation and thus recharge is very important for the future development of the groundwater levels. However, the simulation experiments revealed the weaknesses of the downscaling methods which directly influence the predicted hydrological fluxes, and thus also the predicted groundwater levels. The downscaling process is identified as an important source of uncertainty in hydrological impact studies, which has to be accounted for. Therefore it is strongly recommended to test different downscaling methods by using verification data before applying them to climate model data.

scholarly journals EFFECTS OF THE SEA LEVEL RISE ON UNDERGROUND WATER RESOURCES IN HO CHI MINH AREA

2018 ◽  
Vol 54 (4B) ◽  
pp. 260
Author(s):  
Nguyen Viet Ky
Keyword(s):  
Climate Change ◽  
Groundwater Flow ◽  
Sea Level Rise ◽  
Sea Level ◽  
Fresh Water ◽  
Groundwater Resources ◽  
Underground Water ◽  
Climate Change Scenarios ◽  
The Impact ◽  
And Sea Level

Ho Chi Minh City has 7 aquifers with different distributions, ascending from the east, western-north to eastern-southeast with total potential reserves of about 1.65 million mP3P of fresh water/day, potential reserves of underground water brackish-salty approximately 2.25 million mP3P/day. This resource is invaluable for the development of the city today and the future. However, groundwater resources are at risk of depletion of reserves, quality under the impact of climate change and sea level rise. In this paper, the authors focus on evaluating the impact of rising sea levels to shift the boundaries of the aquifer salinity, which narrow the area of fresh water and diminishing reserves of fresh water . To assess, first based on climate change scenarios and sea level rise has been Vietnam announced in 2012, at the same time as the underground water is exploited more constant (the maximum amount of water extraction in 2015 basis), the authors conducted for running surface flow model to get the water level data at some point to put into models of groundwater flow. Thanks to model groundwater flow, the authors showed that the sea level rise significantly shift the boundaries of the aquifer salinity toward the inner city. The area contains fresh water and reduced water reserves only light compared with present reserves.

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