scholarly journals The implications of climate change for the water environment in England

2015 ◽  
Vol 39 (1) ◽  
pp. 93-120 ◽  
Author(s):  
Nigel W. Arnell ◽  
Sarah J. Halliday ◽  
Richard W. Battarbee ◽  
Richard A. Skeffington ◽  
Andrew J. Wade
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Water Environment ◽  
Simulation Models ◽  
Climate Change Scenarios ◽  
Systematic Assessment ◽  
Management Objectives ◽  
Management Interventions ◽  
The Status ◽  
Policy Objectives

This paper reviews the implications of climate change for the water environment and its management in England. There is a large literature, but most studies have looked at flow volumes or nutrients and none have considered explicitly the implications of climate change for the delivery of water management objectives. Studies have been undertaken in a small number of locations. Studies have used observations from the past to infer future changes, and have used numerical simulation models with climate change scenarios. The literature indicates that climate change poses risks to the delivery of water management objectives, but that these risks depend on local catchment and water body conditions. Climate change affects the status of water bodies, and it affects the effectiveness of measures to manage the water environment and meet policy objectives. The future impact of climate change on the water environment and its management is uncertain. Impacts are dependent on changes in the duration of dry spells and frequency of ‘flushing’ events, which are highly uncertain and not included in current climate scenarios. There is a good qualitative understanding of ways in which systems may change, but interactions between components of the water environment are poorly understood. Predictive models are only available for some components, and model parametric and structural uncertainty has not been evaluated. The impacts of climate change depend on other pressures on the water environment in a catchment, and also on the management interventions that are undertaken to achieve water management objectives. The paper has also developed a series of consistent conceptual models describing the implications of climate change for pressures on the water environment, based around the source-pathway-receptor concept. They provide a framework for a systematic assessment across catchments and pressures of the implications of climate change for the water environment and its management.

scholarly journals Good Status in the Changing Climate?—Climate Proofing Law on Water Management in the EU

2021 ◽  
Vol 13 (2) ◽  
pp. 517
Author(s):  
Suvi-Tuuli Puharinen
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Water Framework Directive ◽  
Surface Waters ◽  
Water Policy ◽  
Climate Change Impacts ◽  
Eu Water Framework Directive ◽  
Management Objectives ◽  
Policy Objectives ◽  
The Eu

Climate change impacts constitute a major risk to the attainment of water policy objectives. This article analyses the resilience of the EU Water Framework Directive (WFD) in the light of the challenges that climate change brings to achieving the Directive’s objectives, no-deterioration and good status of surface waters and groundwater. The WFD includes mechanisms to adapt the water management objectives to climate change impacts, including redefining good status and application of exemptions. However, more harmonised efforts at the EU level would be needed to ensure an equal level of ambition and continuity in the water management objectives capacity to steer towards sustainable regime shifts.

scholarly journals The Influence of Climate and Land-Cover Scenarios on Dam Management Strategies in a High Water Pressure Catchment in Northeast Spain

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1668 ◽  
Author(s):  
J. Zabalza-Martínez ◽  
S. Vicente-Serrano ◽  
J. López-Moreno ◽  
G. Borràs Calvo ◽  
R. Savé ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Land Cover ◽  
Water Pressure ◽  
Management Strategies ◽  
High Water ◽  
Climate Change Scenarios ◽  
Dam Management ◽  
Dam Inflow ◽  
Similar Decrease

This paper evaluates the response of streamflow in a Mediterranean medium-scaled basin under land-use and climate change scenarios and its plausible implication on the management of Boadella–Darnius reservoir (NE Spain). Land cover and climate change scenarios supposed over the next several decades were used to simulate reservoir inflow using the Regional Hydro-Ecologic Simulation System (RHESsys) and to analyze the future impacts on water management (2021–2050). Results reveal a clear decrease in dam inflow (−34%) since the dam was operational from 1971 to 2013. The simulations obtained with RHESsys show a similar decrease (−31%) from 2021 to 2050. Considering the ecological minimum flow outlined by water authorities and the projected decrease in reservoir’s inflows, different water management strategies are needed to mitigate the effects of the expected climate change.

scholarly journals Climate change impact assessment as function of model inaccuracy

2007 ◽  
Vol 4 (5) ◽  
pp. 2875-2899
Author(s):  
P. Droogers ◽  
A. van Loon ◽  
W. Immerzeel
Keyword(s):  
Climate Change ◽  
Impact Assessment ◽  
Climate Change Impact ◽  
Simulation Models ◽  
Climate Change Scenarios ◽  
Model Errors ◽  
Climate Change Impact Assessment ◽  
Scenario Model ◽  
Change Impact ◽  
The Impact

Abstract. Numerical simulation models are frequently applied to assess the impact of climate change on hydrology and agriculture. A common hypothesis is that unavoidable model errors are reflected in the reference situation as well as in the climate change situation so that by comparing reference to scenario model errors will level out. For a polder in The Netherlands an innovative procedure has been introduced, referred to as the Model-Scenario-Ratio (MSR), to express model inaccuracy on climate change impact assessment. MSR values close to 1, indicating that impact assessment is mainly a function of the scenario itself rather than of the quality of the model, were found for most indicators evaluated. More extreme climate change scenarios and indicators based on threshold values showed lower MSR values, indicating that model accuracy is an important component of the climate change impact assessment. It was concluded that the MSR approach can be applied easily and will lead to more robust impact assessment analyses.

scholarly journals Storm water Management in the context of Climate Change and Rapid Urbanization: A case of Tokyo Metropolitan

2019 ◽  
Vol 1 ◽  
pp. 32-44
Author(s):  
Binaya Kumar Mishra
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Urban Areas ◽  
Water Environment ◽  
Storm Water ◽  
Groundwater Depletion ◽  
Flood Events ◽  
Rapid Urbanization ◽  
Storm Water Management ◽  
Tokyo Metropolitan

Groundwater table depletion and increasing flood events can be easily realized in urban areas. It is necessary to improve existing storm water management systems for good quality water environment and reduced hydro-meteorological disasters while preserving our natural/pristine environment in a sustainable manner. This can be achieved through optimal collection, infiltration and storage of storm water. The need of sustainable storm water management is desired and optimal capture measure is explored in this paper. This paper provides a review of storm water management in urbanization and climate change context with a case study of Tokyo Metropolitan, Japan which could be helpful in mitigating the dual problems of groundwater depletion and flood events. This paper presents the overview of storm water run-off management in order to guide future storm water management policies. Also, the effects of different onsite facilities from water harvesting, reuse, ponds and infiltration are explored to establish adaptation strategies that restore water cycle and reduce climate change induced flood and water scarcity.

scholarly journals Water management and climate change monitoring in Tunisia and Egypt using remote sensing techniques

2020 ◽  
Author(s):  
Simonetta Paloscia ◽  
Giacomo Fontanelli ◽  
Simone Pettinato ◽  
Emanuele Santi ◽  
Giuliano Ramat ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Remote Sensing ◽  
Water Resources ◽  
Water Cycle ◽  
Climate Change Scenarios ◽  
Agricultural Practice ◽  
Water Efficiency ◽  
Environmental Models ◽  
Remote Sensing Techniques

<p>This project deals with the implementation of an innovative water management system in Mediterranean countries (i.e. Tunisia and Egypt), which suffer from chronic water scarcity, together with two European countries (Germany and Italy). The consortium is developing and applying synergic methods and algorithms for investigating the water cycle, using remote sensing techniques.</p><p>The focus is on the use of satellite data (both optical and microwave) for monitoring vegetation cover and water status along with soil moisture temporal evolutions in order to improve the knowledge of the water cycle in arid areas. Both local and regional monitoring are carried out in order to investigate different spatial scales.</p><p>Environmental models and algorithms for the retrieval of hydrological parameters have been developed in the frame of this project in order to match the main goal of the project, i.e. to propose practical and cost-effective solutions for driving and updating a method for the sustainable use of water in agriculture. </p><p>An optimized management of water resources for cultivated lands on Egyptian Delta (Northern part) and Tunisian territory will be realized by analyzing the available spatial and temporal data for the areas of interest appropriately selected for this purpose. As such, an efficient water use, equitable distribution of water resources, community participation in decisions, and sustainable system operation over time can be supported.</p><p>First of all, we aim to localize different crop and irrigation techniques for the study regions. This information is required as a basis for further investigations and assessments. Secondly, the water efficiency for different lands, crop types and irrigation systems will be assessed.</p><p>Afterwards, possible improvements in agricultural practice with respect to climate change scenarios and information on water efficiency will be determined by rating the outcome from the assessment.</p>

scholarly journals Comparison of wheat simulation models under climate change. II. Application of climate change scenarios

1996 ◽  
Vol 7 ◽  
pp. 271-281 ◽  
Author(s):  
MA Semenov ◽  
J Wolf ◽  
LG Evans ◽  
H Eckersten ◽  
A Iglesias
Keyword(s):  
Climate Change ◽  
Simulation Models ◽  
Climate Change Scenarios

scholarly journals Impact of Prospective Climate Change Scenarios upon Hydropower Potential of Ethiopia in GERD and GIBE Dams

Water ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 716
Author(s):  
Giovanni Martino Bombelli ◽  
Stefano Tomiet ◽  
Alberto Bianchi ◽  
Daniele Bocchiola
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Energy Production ◽  
Nile River ◽  
Climate Change Scenarios ◽  
Blue Nile ◽  
Half Century ◽  
Hydropower Potential ◽  
Filling Time ◽  
Hydropower Production

Ethiopia is growing fast, and the country has a dire need of energy. To avoid environmental damages, however, Ethiopia is looking for green energy polices, including hydropower exploitation, with large water availability (i.e., the Blue Nile, the greatest tributary of Nile river). Besides other dams on the Omo river, the GIBE family, Ethiopia is now building the largest hydropower plant of Africa, the GERD (Grand Ethiopian Renaissance Dam), on the Blue Nile river, leading to tensions between Ethiopia, and Egypt, due to potentially conflictive water management. In addition, present and prospective climate change may affect reservoirs’ operation, and this thereby is relevant for downstream water users, population, and environment. Here, we evaluated water management for the GERD, and GIBE III dams, under present, and future hydrological conditions until 2100. We used two models, namely, Poli-Hydro and Poli-Power, to describe (i) hydrological budget, and flow routing and (ii) optimal/maximum hydropower production from the two dams, under unconstrained (i.e., no release downstream besides MIF) and constrained (i.e., with fair release downstream) simulation. We then used climate change scenarios from the reports CMIP5/6 of the Intergovernmental Panel on Climate Change (IPCC) until 2100, to assess future hydropower production. Our results demonstrate that the filling phase of the GERD, particularly critical, have optimal filling time of 5 years or so. Stream flows at GERD could be greater than the present ones (control run CR) at half century (2050–2059), but there could be large decrease at the end of century (2090–2099). Energy production at half century may increase, and then decrease until the end of century. In GIBE III discharges would increase both at half century, and at the end of century, and so would energy production. Constrained, and unconstrained simulation provide in practice similar results, suggesting potential for shared water management in both plants.

scholarly journals Adaptation strategies for rainfed rice water management under climate change in Songkhram River Basin, Thailand

2021 ◽  
Author(s):  
Siriwat Boonwichai ◽  
Sangam Shrestha ◽  
Pragya Pradhan ◽  
Mukand S. Babel ◽  
Avishek Datta
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Water Availability ◽  
Adaptation Strategies ◽  
Climate Change Scenarios ◽  
Rainfed Rice ◽  
Rice Season ◽  
Rice Water ◽  
Songkhram River ◽  
Impacts Of Climate Change

Abstract This study investigates the potential impacts of climate change on water resources and evaluates adaptation strategies on rainfed rice water management under climate change scenarios in the Songkhram River Basin, Thailand. The Soil and Water Assessment Tool (SWAT) model was used to project the future water availability under climate change scenarios for the period of 2020–2044. Future annual water availability is expected to remain unchanged due to unchanged future rainfall but expected to reduce from June to November due to changes in seasonal rainfall. The effects of supplying irrigation water to reduce the impact of climate change and increase rainfed rice production were evaluated. To increase the rice production by 15%, it is proposed to construct a reservoir with a capacity of below 65 MCM in each of the 15 sub-basins to fulfill the irrigation water requirements during the rainfed rice season. Alternatively, adaptation at the farm scale can be implemented by constructing ponds with a capacity of 900 m3 to store water for 1 ha of rice field to meet the potential rice yield during the non-rainfed rice season. The results of this study are helpful to policymakers in understanding the potential impacts of climate change and the formulation of adaptation strategies for water and rice sectors in the basin.

scholarly journals Hydrologic and geochemical modeling of a karstic Mediterranean watershed

2012 ◽  
Vol 9 (1) ◽  
pp. 1-27 ◽  
Author(s):  
N. P. Nikolaidis ◽  
F. Bouraoui ◽  
G. Bidoglio
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Swat Model ◽  
Livestock Grazing ◽  
High Rate ◽  
Karst Area ◽  
Water Volume ◽  
Climate Change Scenarios ◽  
Karst Water ◽  
Simulation Results

Abstract. The SWAT model was modified to simulate the hydrologic and chemical response of karstic systems and assess the impacts of land use management and climate change of an intensively managed Mediterranean watershed in Crete, Greece. A methodology was developed for the determination of the extended karst area contributing to the spring flow as well as the degree of dilution of nitrates due to permanent karst water volume. The modified SWAT model has been able to capture the temporal variability of both karst flow and surface runoff using high frequency monitoring data collected since 2004 in addition to long term flow time series collected since 1973. The overall hydrologic budget of the karst was estimated and its evaporative losses were calculated to be 28% suggesting a very high rate of karst infiltration. Nitrate chemistry of the karst was simulated by calibrating a dilution factor allowing for the estimation of the total karstic groundwater volume to approximately 500 million m3 of reserve water. The nitrate simulation results suggested a significant impact of livestock grazing on the karstic groundwater and on surface water quality. Finally, simulation results for a set of climate change scenarios suggested a 17% decrease in precipitation, 8% decrease in ET and 22% decrease in flow in 2030–2050 compared to 2010–2020. A validated tool for integrated water management of karst areas has been developed, providing policy makers an instrument for water management that could tackle the increasing water scarcity in the island.

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