Climate change impacts on water balance in Western Bohemia and options for adaptation

Beran, Adam; Hanel, Martin; Nesládková, Magdalena; Vizina, Adam; Vyskoč, Petr; Kožín, Roman

doi:10.2166/ws.2018.080

Cited by 4 publications

(7 citation statements)

References 6 publications

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“…Finally, 3(+1) LM models and 3 RF models were selected. The models contained a large number of independent variables (6)(7), possibly leading to model overfitting and therefore another model was selected which performed best for the RMSE criterion function and is based only on 4 independent variables and is therefore more user friendly.…”

Section: Discussionmentioning

confidence: 99%

“…Another option is, for example, the use of globally available climate reanalyses or other available data sources. Despite the development of data availability and modelling tools, a question arises: How significant is the impact of the ongoing cli-mate change on hydrological balance components and the consequent impact on water management [6]?…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Evaporation from Water Reservoirs in Local Conditions at Czech Republic

et al. 2021

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Evaporation is an important factor in the overall hydrological balance. It is usually derived as the difference between runoff, precipitation and the change in water storage in a catchment. The magnitude of actual evaporation is determined by the quantity of available water and heavily influenced by climatic and meteorological factors. Currently, there are statistical methods such as linear regression, random forest regression or machine learning methods to calculate evaporation. However, in order to derive these relationships, it is necessary to have observations of evaporation from evaporation stations. In the present study, the statistical methods of linear regression and random forest regression were used to calculate evaporation, with part of the models being designed manually and the other part using stepwise regression. Observed data from 24 evaporation stations and ERA5-Land climate reanalysis data were used to create the regression models. The proposed regression formulas were tested on 33 water reservoirs. The results show that manual regression is a more appropriate method for calculating evaporation than stepwise regression, with the caveat that it is more time consuming. The difference between linear and random forest regression is the variance of the data; random forest regression is better able to fit the observed data. On the other hand, the interpretation of the result for linear regression is simpler. The study introduced that the use of reanalyzed data, ERA5-Land products using the random forest regression method is suitable for the calculation of evaporation from water reservoirs in the conditions of the Czech Republic.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of Evaporation from Water Reservoirs in Local Conditions at Czech Republic

et al. 2021

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“…Along with this, the level of perception of the impacts of climate change on water sources is also rising [16,17]. Therefore, the spatial differentiation of the impacts of climate change on the hydrological balance of river basins are analyzed and estimated according to individual scenarios [18,19]. In this context, new water supply measures are discussed in connection with the heightening probability of all forms of drought occurring [9,20,21].…”

Section: Basic Aspects Of Drinking Water Supply Problems In the Czech Republicmentioning

confidence: 99%

“…Our research focuses on the socio-economic contexts of the level of drinking water supply; other primarily natural factors have not been subjected to statistical investigation. The spatial differentiation of natural conditions (e.g., hydrogeological conditions on the local level of municipalities) is certainly an important factor for municipalities in the Czech Republic, but it is one that is quantitatively difficult to process [18,19].…”

Section: Factors Impacting the State And Development Of Drinking Water Supplymentioning

confidence: 99%

Relationships between Insufficient Drinking Water Supply and the Socio-Economic Development of Small Municipalities: Mayors’ Opinions from the Czech Republic

Kopp

Kureková

Hejduková

et al. 2021

Water

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Repeatedly occurring droughts in the Czech Republic in previous years have heightened the need to answer questions concerning the provision of drinking water in small municipalities in the context of their development. The goal of the research was to assess what mutual relationships exist between insufficient drinking water supply and the socio-economic level of municipalities with less than 2000 inhabitants. The basis of the study is formed by data collected via a questionnaire survey of the mayors of 2110 municipalities. For the purposes of the analysis, the Drinking Water Supply Threat Index (DWSTI) composite indicator was established. Subsequently, the effect of selected factors on DWSTI was determined via correlation and regression analysis, and results were compared for two size groups of municipalities indicate water supply problems. The digging of new wells for individual needs is seen to be the most significant signal of problems. The absence of water supply infrastructure results in a heightening of the socio-economic deprivation of small municipalities, as it limits new building and becomes a limitation to their development. A solution is possible based on regional or trans-regional financial and managerial support of development together with an active approach on the part of municipalities.

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“…This approach is based on the construction of climate scenarios and assessment of impacts on hydrological processes using hydrological models. The impacts of climate change on water balance and possible adaptation measures have been studied, for example, by Beran et al [8].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Climate Change on the Reliability of Water Resources

Sýs

Fošumpaur

Kašpar

2021

Climate

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Climate change impact assessment is crucial for strategic planning in many areas, including water management, agriculture and forestry. Water planning has a long tradition in the Czech Republic, who has implemented the requirements of the Water Framework Directive since 2000. Following the expected impacts of climate change on the hydrological regime, adaptation measures in the water sector are being prepared as part of strategic plans. This contribution studies the uncertainty propagation of climate scenarios in hydrological data, which are then used to assess the reliability of water resources and to design appropriate adaptation measures. The results are being discussed for a case study in the deficit area of Rakovnický stream and Blšanska river basins, which are among the driest areas in the Czech Republic. Research of the impact of climate change on the reliability of water resources has been prepared using ensembles of selected regional climate models. This approach has allowed a probabilistic assessment of the impact on the hydrology regime and the reliability of water supply from reservoirs for various time horizons of climate change. In view of the relatively large variance of potential impacts on water resources, options for further strategic planning in the water management area are being discussed.

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Climate change impacts on water balance in Western Bohemia and options for adaptation

Cited by 4 publications

References 6 publications

Evaluation of Evaporation from Water Reservoirs in Local Conditions at Czech Republic

Evaluation of Evaporation from Water Reservoirs in Local Conditions at Czech Republic

Relationships between Insufficient Drinking Water Supply and the Socio-Economic Development of Small Municipalities: Mayors’ Opinions from the Czech Republic

The Impact of Climate Change on the Reliability of Water Resources

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