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Disaggregation of rainfall data
Němeček, Václav ; Máca, Petr (advisor) ; Heřmanovský, Martin (referee)
The bachelor thesis studies selected disaggregation methods, which are used for the description of hydrological time series. The literature search provides the survey of important disaggregation methods. The special attention is put on disaggregation method using the Wavelet coefficients. The methods of moment were applied on estimation of parameters for disaggregation model. Variance reduction function were estimated for selected precipitation time series obtained from the MOPEX database.
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Little ice age in the documentary sources
Žáková, Nikola ; Soukupová, Jana (advisor) ; Synáčková, Marcela (referee)
This diploma thesis focuses on the description of the period called Little Ice Age based on documentary sources information and the early meteorological measurements. This phase lasted approximatelly from 13th century till mid 19th century. I also mention the possible causes and important historical contexts in the thesis, on which climate change associated with Little Ice Age could have considerable influence. While searching for information on a particular topic, I relied on the assumptions of the books of worlds authors and on chronicles records.
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Pluvial and climatically favorable years 1770-1773
Mičková, Iva ; Soukupová, Jana (advisor) ; Vokoun, Martin (referee)
The purpose of this thesis is to offer a complex picture of climate change during a short fourth pluvial period and its impact on humankind. Since there are countless number of sources and literature for every particular state, I focused mainly on a summary for the Czech Republic and touched on its neighboring countries. For a better comprehension of the whole picture of contexts, I have also mentioned Little Ice Age period, where the third and the fourth pluvial period belong to, and its possible causes and causes of the climate change in general in the beginning of the thesis. In its final part the thesis has evaluated the impact of this period on humankind. The purpose of the thesis is to draw credible consequences from the available sources for the analysed territory.
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Measurement of the rain rate instantaneous value using acoustic method
Kresta, Daniel ; Poliak, Juraj (referee) ; Wilfert, Otakar (advisor)
This thesis deals with implementation of the rainfall rate measurement using an acoustic method. It is divided into four parts. In the first part of the thesis a necessary theoretical knowledge is analysed. The second part contains a design of a workplace used for the measurement. The third part presents and analyses important experimental recordings acquired in the workplace. Then all measured values are processed and applied in the measuring program. The last part summarizes results of the thesis, advantages and disadvantages of using the acoustic rainfall rate meter.
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Rain Prediction Using Meteo-Radar
Gerych, Petr ; Hradiš, Michal (referee) ; Szőke, Igor (advisor)
This paper deal with the rain prediction in the short time interval. The static pictures from meteo-radar serves as input data. The principle of meteo-radar is explained. The possible methods of the object detection and registration, motion interpolation and extrapolation is described. The flood fill algorithm and Lagrange extrapolation is applied to rain prediction. Application is written in C++ language under OS Linux. The example of the software application results is included.
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Realtime Weather in a Landscape Visualisation
Vlček, Adam ; Jošth, Radovan (referee) ; Seeman, Michal (advisor)
Thanks to the increasing computation power the complexity and dynamism of virtual reality is continuously improving. This work aims to examine influences of weather in a landscape and the means to simulate and dynamically visualize them in real time on the current personal computer hardware. The main goal is to find quick well looking approximations rather than a complex physically correct simulation. The work covers using modern programmable GPU not only for visualization but also as a powerful simulation instrument. The main topic is water movement in the terrain and its effects on it like erosion, snow melting and moisture impact on vegetation. This requires dynamic terrain texturing and algorithms supporting fast geometry and normals updates.
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Atmospheric Phenomena
Radouš, Jakub ; Milet, Tomáš (referee) ; Kobrtek, Jozef (advisor)
This bachelor's thesis deals with a visualisation issue of several atmospheric phenomena by means of the OpenGL library. The work contains theoretical bases for rain, snowfall, lightning, fog, wind, tornado and rainbow, which are further converted to the form of algorithms. The outcome is an application with graphical user interface that is able to display seven natural phenomena set in a landscape.
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On Forward and Backward Scattering from Fog and Rain Drops
Fišer, O. ; Rejfek, Luboš ; Brázda, Vladimír
This contribution deals with the backward and forward scattering on dielectrical spheres. The well-known Rayleigh, Mie and Optical regions are discussed for frequencies regions 0.05 to 70 GHz and for optical wavelength of 830 nm. Some of our results fit the published one, some of them are different and the explanation of possible reasons is added. Also the formulas necessary to compute the radar reflectivity or attenuation due to fog and rain are presented.
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The analysis of the utilization of farm machinery used to repair damage caused by flash flooding.
KULHÁNEK, Pavel
The aim of the thesis is to analyse possible consequences caused by flash flooding and the work that is needed to repair the damage. The thesis gives basic information about utilization of farm machinery, auxiliary working adapters and traffic appliance suitable for realization of work plans to remove the flooding consequences. The thesis should help accredited authority with decision making and with repairing and securing the consequences caused by flooding.
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It's Gonna Rain: Analysis of Determinants of Pool Attendance in Czech Republic
Hyneš, Ondřej ; Hudík, Marek (advisor) ; Potužák, Pavel (referee)
This paper reveals by econometric analysis the determinants of pools attendance and analyzes them. In a sample of attendance of ten pools in the Czech Republic for three summer months concludes that, among others, the weather forecast, specifically the rain forecast, for the day significantly affects attendance. Although rain forecast is only for a less than a third of the observations consistent with actual rainfall observed in the day, visitors over time do not adjust their expectations and forecast is playing an important role. This may be due to rational ignorance or the high cost of transmission of information among visitors.
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