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Energy balance of the snowpack: Case study Bystřice River basin (Krušné Mountains)
Matějka, Ondřej ; Jeníček, Michal (advisor) ; Ducháček, Libor (referee)
Energy budged of the snowpack: Case study of the Bystřice River basin (Krušné Mountains) The aim of this thesis is to describe and calculate the energy budget of snowpack which is one of the approach to snowmelt simulation. The focus is on physical basis of the accumulation and melting of the snowpack. The second aim is to select and apply of such a mathematical expression of the energy budged of snow which provides best fits of the available data set from Hřebečná climatological station in Bystřice River basin in Krušné Mountains. Calculation of point snowmelt and rainfall data measured for the winter season 2011/2012 were used to simulate the snow water equivalent. As the main heat flows that affect the melting of snow in the area have been identified flows caused by shortwave radiation and latent heat. The development of heat flows during the winter period in 2011/2012 was founded. Most obvious development is demonstrated by the proportion of short-wave radiation to the total energy budget. The defects of the measurement of daily precipitation amounts and measurements of snow mass were revealed. Therefore the requirement of identifying the causes of incorrect measurements of snow mass at the climatological station Hřebečná was revealed. Key words: snowpack, snowmelt modelling, energy budget of...
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Energy balance of the snowpack: Case study Bystřice River basin (Krušné Mountains)
Matějka, Ondřej ; Jeníček, Michal (advisor) ; Ducháček, Libor (referee)
Energy budged of the snowpack: Case study of the Bystřice River basin (Krušné Mountains) The aim of this thesis is to describe and calculate the energy budget of snowpack which is one of the approach to snowmelt simulation. The focus is on physical basis of the accumulation and melting of the snowpack. The second aim is to select and apply of such a mathematical expression of the energy budged of snow which provides best fits of the available data set from Hřebečná climatological station in Bystřice River basin in Krušné Mountains. Calculation of point snowmelt and rainfall data measured for the winter season 2011/2012 were used to simulate the snow water equivalent. As the main heat flows that affect the melting of snow in the area have been identified flows caused by shortwave radiation and latent heat. The development of heat flows during the winter period in 2011/2012 was founded. Most obvious development is demonstrated by the proportion of short-wave radiation to the total energy budget. The defects of the measurement of daily precipitation amounts and measurements of snow mass were revealed. Therefore the requirement of identifying the causes of incorrect measurements of snow mass at the climatological station Hřebečná was revealed. Key words: snowpack, snowmelt modelling, energy budget of...
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Application of the Snowmelt Runoff Model for snow accumulation and snowmelt modelling in experimental catchments Bystřice and Zlatý Brook in the Krušné Mountains
Šedivá, Kateřina ; Jeníček, Michal (advisor) ; Ducháček, Libor (referee)
Title: Application of the Snowmelt Runoff Model for snow accumulation and snowmelt modelling in experimental catchments Bystřice and Zlatý Brook in the Krušné Mountains Modelling of hydrological processes is a dynamically developing part of hydrology. The Snowmelt Runoff Model (SRM) was applied for modelling the runoff in two experimental catchments Bystřice and Zlatý Brook. The aim of this thesis is to set up and calibrate SRM model and to evaluate methods and procedures used for runoff simulations. The SRM model was used for modelling snow accumulation and snowmelt in two selected catchments in the Krušné Mountains. The snow depths and snow water equivalents are measured since 2009 at selected locations situated in catchments. Calibration and validation of the model was based on continual time series of precipitation, air temperature and discharge measured 2009. Hydrological years 2009 and 2010 were used for model calibration and hydrological years 2011 and 2012 were used for model validation. Sensitivity analysis, which quantifies the effect of individual model parameters on the simulating proces, was carried out based on results. Recession coefficient and runoff coefficient belong to the most sensitive parameters with highest impact on runoff simulations. Model calibration was successful, which...
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Hydrological regime of the Labský důl Valley
Ducháček, Libor ; Jeníček, Michal (referee) ; Šobr, Miroslav (advisor)
The glacier valley of Labský důl is one of the most significant relicts of the Pleistocene mountain glaciations in the Czech Republic. Majority of research in this area has been focused on geomorphologic patterns and hydrological characteristic was touched just marginally. This work contains basic hydrographic and hydrologic characteristics based on the understanding of the local environment. Detailed research was implemented on the part of the watershed closed by the water level gauge installed by PřF UK. There is described the watershed reaction during different rainfall episodes and it is evaluated according to hydrological balance equation. It was used several interpolation methods to reach the influence of the particular parts of the equation. The most important content of this file lays in hydrological regime and first of all in amount of data and information, which could be used to create rainfall-runoff model of the Labe River. Powered by TCPDF (www.tcpdf.org)
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Výzkum a implementace nových nástrojů pro předpovědi povodní a odtoku v rámci zabezpečení hlásné a předpovědní povodňové služby v ČR: Rozvoj metod pro stanovení a měření parametrů sněhové pokrývky vzhledem k potřebám hlásné a předpovědní povodňové služby. DÚ 5
Český hydrometeorologický ústav, Praha ; Stašová, Alena ; Kimlová, Martina ; Bubeníčková, Libuše ; Řičicová, Pavla ; Ducháček, Libor ; Hancvencl, Rudolf ; Vajskebr, Václav ; Pobříslová, Jana ; Stříž, Martin ; Jirák, Jan ; Bercha, Šimon
Výsledky testování sněhoměrných polštářů na stanici Desná-Souš, Svratouch a Churáňov. Návrh metodiky pro verifikaci dat ze sněhoměrných polštářů a pro jejich provoz. Ověření nových postupů měření parametrů sněhové přikrývky. Výzkumný monitoring sněhové přikrývky v rámci experimentálních povodí v Jizerských horách a v západních Krkonoších. Posouzení reprezentativnosti dosavadního způsobu měření parametrů sněhové pokrývky a navržení nových postupů.
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