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Changes in groundwater recharge and base flow in mountain catchments in Czechia due to changes in snow storages
Kožíšek, Matěj ; Jeníček, Michal (advisor) ; Šípek, Václav (referee)
Changes in groundwater recharge and base flow in mountain catchments in Czechia due to changes in snow storages The diploma thesis deals with the topic of replenishing groundwater reserves due to the melting of snow cover. The main motivation is the importance of the topic for understanding the changes in the hydrological regime caused by decreasing snow cover and small number of research papers on this topic. The aim of the work is to find the relationships between changes in snow cover and groundwater recharge and runoff parameters in the warm part of the year. The main part of the thesis is work with the HBV model. The parameters of underground water reserves and the size of the basic runoff are modeled using climate data and snow water value data from selected mountain basins of the Czech Republic. The Mann-Kendall test and Theil- Sen linear trend is used to evaluate trends in data. The relationships between individual parameters, expressed by Spearmann correlation tests are also examined. The impact of climate change and the associated increase in air temperature was reflected in all runoff and groundwater parameters. Trends were observed at the annual and especially the monthly level. The impact of climate change and the associated increase in air temperature (0.24 to 0.4 řC/decade) was...
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Long-term changes in snow depth and snow water equivalent at selected mountain stations in Czechia
Kožíšek, Matěj ; Jeníček, Michal (advisor) ; Nedělčev, Ondřej (referee)
Long-term changes in snow depth and snow water equivalent at selected mountain stations in Czechia This bachelor's thesis deals with the topic of long-term changes of snow cover in the peripheral mountain ranges in the Czech Republic. The first part is a research of foreign and czech literature dealing with changes in the parameters of snow cover depending on climate change and the consequences of these changes on various components of nature. The second part of the work consists of the analysis of climatic data from stations located in the peripheral mountains of the Czech Republic in the period of hydrological years 1980-2014. The mountains included in this research include Šumava (Churáňov, Lenora and Husinec), Jizera Mountains (Bedřichov and Desná), Krkonoše (Harrachov), Orlické Mountains (Deštné and Rokytnice v O. h.) and Moravskoslezské Beskydy (Lysá hora). The statistical Mann-Kendall test is used to evaluate trends. Changes in snow cover have a significant impact on the functioning of many landscape processes and on the life of the population in terms of future water availability and recreation.
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Analýza počtu srážkových dní a srážkových úhrnů za období 1961-2010
Ludvík, Jan
The aim of the master thesis was based on the data of the selected climatological stations to evaluate the occurrence of precipitation days in terms of their frequency and amount of rainfall for the period of fifty years (1961-2010). Literature search was carried out for studies dealing with long-term incidence of rainfall in the territory of the Czech Republic focusing on the Southern Moravia. The hypothesis, in the context of the increasing variability and climate change, was tested about the increasing number of precipitation days with lower sums (3, 5, 10 and 15 mm) for April, May and June, which are the most important months for intensive plant growth and increase in biomass. The results indicate that the change in the number of precipitation days depends on the months and has a local character. Furthermore, were tested on the selected locality without a rainfall period, here has been shown that the number of non-rainfall period increase over 15 days.
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Analýza výskytu a četnosti srážek na vybraných lokalitách
Ludvík, Jan
The aim of the bachelor thesis was based on the data of the selected climatological stations to evaluate the occurrence of precipitation days in terms of their frequency and amount of rainfall for the period of fifty years (1961-2009). Literature search was carried out for studies dealing with long-term incidence of rainfall in the territory of the Czech Republic focusing on the Southern Moravia. The hypothesis, in the context of the increasing variability and climate change, was tested about the increasing number of precipitation days with lower sums (3 and 6 mm) for April, May and June, which are the most important months for intensive plant growth and increase in biomass. The results indicate that the change in the number of precipitation days depends on the months and has a local character.
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