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Regime of Thunderstorm occurence in Slovakia
Kontrošová, Jana ; Sládek, Ivan (advisor) ; Hošek, Jiří (referee)
4 Abstract The subject matter of my thesis is the regime of thunderstorm occurrence in Slovakia. In the theoretic part of my work, I deal with thunderstorm categorization, condition of its creation and development and with side-effect phenomena. I also mention continentality of climate, which is linked with disintegration and occurrence of days of thunderstorms and thunderstorms. In the practical part, I focus on statistic analysis of number of days of thunderstorms and thunderstorms at the Irish meteorological station Valentia, which represents ocean climate and at 5 Slovak meteorological stations with continental climate in the period of 1961 - 2006 or 2007. I study the trend during years, months, seasons and number of thunderstorm phenomena at the stations, while comparing principles of oceanic and continental climate in the context of thunderstorms and days of thunderstorms occurrence. The main object of my thesis it to define thunderstorm season at each station by method of cumulative series designed by I. Sládek. Conventionally specified seasons do not always match reality. By this method, it is able to determine the natural beginning, end and duration of seasons according to selected climatological parameter. The thunderstorm season at Slovak meteorological stations usually begins at 3rd of May, ends...
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The influence of weather on road accidents in Czech Republic
Slezák, Jan ; Sládek, Ivan (advisor) ; Sulan, Jan (referee)
6 Abstract Diploma thesis deals with influence of weather on traffic accidents on the roads in the Czech Republic in 2007-2009. After an introduction the reader is familiar with the origin of the acquired data and their processing methodology. An integral part of the search is a clear development of accidents on roads in the Czech Republic from 1993 to present. The following chapter is devoted to the topic of weather influence on road safety, prepared mainly from scientific foreign studies. It acquaints readers with the meteorological factors, the level of the weather influence and measures that increase road safety. The main part deals with the influence of weather on road accidents in Czech Republic. Part of the chapter deals with the expression of the number ratio of accidents to traffic volume in the monthly and daily operation. The second part is an in-depth analysis focused on days 4 and more deadly traffic accidents that have become a key concern for the following subsections. Subsections deal with evaluating the status of the road surface and weather conditions, according to Police Czech Republic data and the relationship between meteorological elements (data source CHMI) and frequency of traffic accidents. The last part is the introduction of a new term "Accident Day" and a detailed analysis of its...
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The trends of sunshine on the meteorological stations with the long period of measurement
Opatrná, Petra ; Sládek, Ivan (advisor) ; Hostýnek, Jiří (referee)
One of the main objectives of this thesis is to identify the trends of sunshine which was measured on the meteorological stations and to explain it by the help of synoptical situations. Further, I would like to define the period, in which the days without sunshine dominate and the period, when the total of sunshine is higher, and to determine their influence on human's organism by means of the T and H index. I used data from eight meteorological stations, which are equable dislocated all around Czech Republic and are situated in the different elevations above sea level. Two of these meteorological stations (Praha - Karlov and Milešovka) have series of measurements which are in time longer than eighty years. In the first part of this thesis, I describe the measurement of sunshine and the factors, which affect it. Then I focus on the year totals of sunshine and I uncover their trends. The final chapters deal with the periods without sunshine which are called the dark periods and with the periods with higher total of sunshine which are called the periods of sunshine plentitude and their peripheries. The amount of sunshine had been going up until the fifties of the last century, after that came a distinct fall to the eighties when the trend was changing again and was raising up slowly. This fact harmonizes with...
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Evaluation of earth surface forms as factor influencing wind conditions
Šůstková, Anna ; Sládek, Ivan (advisor) ; Voják, Karel (referee)
Evalution of earth surfaře forms as factor influencing wind conditions is name the works, which was process. The main aim of this works is evaluate conditions on area o Zlín region. The work is separate into several chapters. Former of the four chapters are formel basid information about wind energy. Next chapters are formel one'n own calculation and information about programme WAsP. Reliéf is evaluate to help with programme WAsP. This programme was develop for need wind energy. This programme contain model for roughness, orography ans shelter. Map of average wind speed in high 100 meters above lan dis result of this works.
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Relations among sunshine, global radiation, cloudiness and day longitude at Hradec Králové
Schovánková, Jana ; Sládek, Ivan (advisor) ; Šindelářová, Tereza (referee)
The work deals relations among sunshine, global radiation, cloudiness and day longitude. The main purpose of this work is to utilize indirect calculation methods for determination of some basic characteristics of global solar radiation from data of the bright sunshine duration, cloudiness and day longitude. The work is based on such methods, which were used by Karel Vaníček and the others from the Solar and ozone observatory in Hradec Králové. Their aim was to apply them in the utilization of solar renewable energy sources. The work solves this topic by other statistical methods and approaches. It was used data from the Solar and ozone observatory CHMI (The Czech Hydrometeorological Institute) in Hradec Králové, which has dealed with problems of the solar radiation for a long time. It was applied a period of complete daily sums of the solar radiation, cloudiness and the sunshine duration from the year 1999 to 2008. The second part of this work is concerned with a definition of the winter period of the bright sunshine duration in the Giant Mountains and compares it with Prague. It was used data from two meteorological stations. The first one is located in the Giant mountains - the Labská Bouda station and the second station in Prague - the Praha - Libuš station to make a comparison between higher...
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Bioclimate of Liberec
Rubáš, Dominik ; Sládek, Ivan (advisor) ; Hájková, Lenka (referee)
The diploma thesis provides special studies from the human bioclimatology sector. Ten year sequences (2001-2010) of many meteorological components are processed here. The meteorological components are as follows: average daily air temperature, average daily wind speed, time of sunshine per day, duration of rainfalls, fogs and fumes and also monthly aggregate rainfall. The main study aims attention to evaluation of complex effects of selected elements on humans. The most and the least suitable season of the year for performing outdoor activities for a human were found, including optimal definition of summer holidays. Further studies concern the problems of air pollution related with synoptic situation. Sufficient space has been also given to more studies relating to wind chill or relations among individual meteorological elements, which can be helpful while forecasting the weather. With the help of particular data provided by Liberec hospital, the correlation between amounts of patients with particular diseases and changes of selected meteorological elements has been discovered.
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Meteorological factors influencing risk of forest fires in the Czech Republic
Sehnalová, Petra ; Sládek, Ivan (advisor) ; Francl, Roman (referee)
The aim of my work is to clarify the meteorological conditions which lead to forest fires and create a formula that would assessed the fire hazard on the basis of forecast of meteorological parameters. Main parts of this work are: definition and conditions of the emergence of forest fires, division of forest fires, methods of disposal of fires, methods and ways of predicting and detecting forest fires and the occurrence and areal extent of forest fires in the world and in our country, influence of drought and global warming. I evaluated forest fires in terms of meteorological factors (average daily temperature, total daily precipitation - processed by method of effective precipitation and wind speed) in the Chomutov distrikt (from 3 climatological stations) from 1998 to 2008. First I analyzed impact of individual meteorological parameters on the occurrence of forest fires during last 11 years. I drew up several formulas for calculating the hazard of fires. The formula with the best results I have named Fire Hazard Index and set the limits, i.e. the degree of harard. The Fire Hazard Index is meteorological index and it does not work with the factors of vegetation, infrastructure and topography. Therefore Fire Hazard Index would be a suitable part of the overall General Hazard Index, which would take into...
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