Groundwater system and climate change: Present status and future considerations

Amanambu, Amobichukwu Chukwudi; Obarein, Omon A.; Mossa, Joann; Li, Lanhai; Ayeni, Shamusideen S.; Balogun, Olalekan; Oyebamiji, Abiola; Ochege, Friday Uchenna

doi:10.1016/j.jhydrol.2020.125163

Cited by 159 publications

(80 citation statements)

References 306 publications

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“…At present, researches on aquifer change are still few and inadequate. Improving our understanding of the physical processes underlying models to improve their simulation of real‐world conditions remain a priority for climate and earth scientists, and this can involve the need for a deeper grasp of complex physical processes and feedback mechanism with the use of more sophisticated models (Amanambu et al, 2020). Therefore, accurate uncertainty analysis is of great significance in regions where data is lack, but the workload is also large.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, in order to meet the growth demand of crops, it is necessary to increase the amount of surface water irrigation, which results in the change of regional water circulation mechanism. Therefore, for the irrigation area of groundwater in arid areas management research field should be integrated multiple disciplines (Amanambu et al, 2020), to establish the relationship between the regional ecological environment and the demand of groundwater (L. Zhang, Dong, & Huang, 2004), puts forward the best water level under different planting structure, and according to the actual demand allocation of surface water and groundwater irrigation amount, and reasonable control of groundwater exploration, to ensure the ecological security in the region.…”

Section: Discussionmentioning

confidence: 99%

“…Such an approach may reduces the uncertainty of parameters in the model, but it may still cause different combinations of parameters in the model to produce the same effect (Zheng, Zhang, & Gong, 2015). Therefore, in the process of verifying the accuracy of the model, we also used soil mois- back mechanism with the use of more sophisticated models (Amanambu et al, 2020). Therefore, accurate uncertainty analysis is of great significance in regions where data is lack, but the workload is also large.…”

Section: Source Evaluation Of Model Uncertaintymentioning

confidence: 99%

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Quantitative analysis of the driving factors for groundwater resource changes in arid irrigated areas

Guo

Niu

et al. 2020

Hydrological Processes

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How to quantify the impact of climate change and human activities on groundwater is not only a hot topic of current research but also a key point of water resource management in arid irrigated areas. Therefore, this paper analyzes the changes in the trends of land use, climate, and groundwater extraction in the Yanqi Basin in recent years and uses the distributed hydrological model MIKE‐SHE to quantitatively analyze the impacts of these three factors on groundwater resources. The results show that: 1. The Nash coefficients of the simulated and observed groundwater levels during the verification period are 0.84, 0.79 and 0.76; the correlation coefficient between the simulated and observed soil moisture is 0.86. Although there are some uncertainties in the simulation, the results prove that the model can be used to simulate arid irrigated areas. 2. The effects of these three factors on groundwater levels are 5, 12.5 and 82.5%, respectively, and have caused the regional average groundwater level to decrease by a maximum of 0.07, 0.23 and 1.79 m, respectively. The effects of these three factors on the interactions between surface water and groundwater were 7.04, 3.63 and 89.33%. Groundwater extraction has become the main influencing factor of regional groundwater resources changes due to its more direct influence. 3. The influence of groundwater extraction has a strong spatial distribution characteristic and 10% of the study area has been greatly impacted by the groundwater extraction. Base on the above results, integrating multidisciplinary knowledge to establish the relationship between ecological environment and groundwater changes can provide strategies for the sustainable development of groundwater.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Source Evaluation Of Model Uncertaintymentioning

confidence: 99%

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Quantitative analysis of the driving factors for groundwater resource changes in arid irrigated areas

Guo

Niu

et al. 2020

Hydrological Processes

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“…Groundwater may be directly affected by climate change due to its interaction with surface water resources and indirectly through the recharge process as a result of alterations in volume and distribution of groundwater recharge (Amanambu et al 2020;Epting et al 2021;Gomes et al 2021;Kahsay et al 2018;Marques et al, 2020;Zhu et al 2020). Thus, in order to evaluate the impact of climate change on groundwater resources it is important to have reliable meteorological data about changes in the major climatic variables as well as an accurate estimation of groundwater recharge (Dragoni & Sukhija, 2008;Hirata & Conicelli, 2012;Kumar, 2012;Zhang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The rapid economic development in the past years increased the water demand for domestic, industrial and agricultural uses in the region, and since groundwater is a main source of water to population, sometimes the sole source, the study of the region's aquifer systems is of extreme importance. It is, therefore, necessary to understand properly the behavior of these aquifers in different possible climatic scenarios, in order to better control and manage the water resources, guaranteeing the water supply for future generations (Lauffenburguer et al, 2018;Hund et al, 2018;Pulido-Velazquez et al, 2018;Patil et al, 2020;Amanambu et al, 2020;Nygran et al, 2020;Zhou et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Analysis of indicators of climate extremes and projection of groundwater recharge in the northern part of the Rio de Janeiro state, Brazil

Cordeiro

Silva

Dereczynski

et al. 2021

Environ Dev Sustain

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Climate change can affect directly the hydrological cycle and influence groundwater availability due to the direct or indirect impact on recharge and discharge processes. The present investigation focuses on groundwater recharge processes in a fluvial-deltaic aquifer in the northern part of the Rio de Janeiro state (Brazil), a region that relies on groundwater resources and where meteorological data indicate a shift from tropical humid climatic conditions to semiarid. The main objective is to understand how groundwater resources respond to the consequences of climate change on groundwater recharge, in order to improve groundwater management practices and guarantee quantitative and qualitative good status. Climate models' data and projections were used as a tool to provide a better understanding of how climate change can modify the dynamics in the studied groundwater system. The present climate indices for extreme temperature and precipitation were examined in order to establish the current climatology for the study area, and the Thornthwaite−Mather hydrometeorological balance (TMHB) was used to calculate inputs to the aquifer. Projections for annual rainfall and air temperature for the period 2041-2070 obtained from Eta5km_HadGEM2-ES outputs for the Intergovernmental Panel on Climate Change scenarios RCP4.5 and RCP8.5 were used to estimate recharge to the aquifer using the hydrological code Visual Balan v2.0. Results revealed a tendency to air temperature increase and decrease in precipitation rate for the period of study. Consequently, there was a reduction of recharge in both IPCC scenarios used for the estimation, indicating a decrease in the groundwater resources stored in the region. These results place new challenges to guarantee sustainable groundwater management and the achievement of new aquifer system equilibrium to adapt to climate change impacts.

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Ecohydrology of coastal aquifers in humid environments and implications of a drying climate

Dyring

Hofmann

Stanton³

et al. 2022

Ecohydrology

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Coastal groundwater-dependent ecosystems (GDEs), such as wetlands, estuaries and mangrove forests, are globally important habitats that promote biodiversity, provide climate regulation and serve as refugia for plant and animal communities. However, global warming, coastal development and over-abstraction threaten the availability and quality of groundwater in coastal aquifers and, by extension, the ecohydrological function of dependent ecosystems. Because ecohydrological knowledge of coastal groundwater is disparate across disciplines and habitat types, we begin by summarising the physiochemical, biological and hydrological processes supported by groundwater across coastal watersheds. Groundwater makes a significant but poorly recognised contribution to the function and resilience of coastal ecosystems and will play an essential role in climate change mitigation and adaptation. This review then explores how critical ecosystem processes supported by groundwater will be affected in areas of the humid subtropics that are expected to be impacted by climatic drying. Where rainfall is predicted to decrease, reduced groundwater recharge will interrupt the hydrology of coastal GDEs, while anthropogenic pressures, such as land-use intensification and pollution, will diminish the quality of remaining groundwater. The challenges of managing groundwater for multiple purposes under climate change predictions are highlighted. To improve the management of coastal GDEs, research should be aimed at developing robust conceptual models of coastal groundwater systems that quantify biophysical linkages with ecological communities across relevant spatiotemporal scales.

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Groundwater system and climate change: Present status and future considerations

Cited by 159 publications

References 306 publications

Quantitative analysis of the driving factors for groundwater resource changes in arid irrigated areas

Quantitative analysis of the driving factors for groundwater resource changes in arid irrigated areas

Analysis of indicators of climate extremes and projection of groundwater recharge in the northern part of the Rio de Janeiro state, Brazil

Ecohydrology of coastal aquifers in humid environments and implications of a drying climate

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