|
| |
|
|
Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia
Ptáček, Tomáš ; Sládek, Ivan (advisor) ; Sehnalová, Petra (referee)
Peculiarities of the atmospheric precipitation regime in medium and high altitudes of the Czechia and Slovakia Abstract The thesis deals with the question of rise in precipitation during winter period in mountain and submontane areas of the former Czechoslovakia. This increase comes out as circumstantial maximum of precipitation in winter period. Some stations have even recorded higher precipitation totals during colder half-years than during warmer half-years. The areas, which experience this phenomenon, differ in this matter from the continental nature of the precipitation in the lower altitudes. The main part of the thesis consists in a background research of the existing expert literature on the topic of increased incidence of winter precipitation, which hasn't been sufficiently discussed so far. The other substantial part of the thesis forms personal research. The research has been made at three stations in the Jizera mountains, i.e. in the area, where the increased incidence of winter precipitation comes out at most. There have been encountered some atmospheric situations triggering extreme precipitation totals in winter, which can't be found to such extent in lower altitudes. The windward of the Jizera mountains combined with the dominant west streaming during winter period is to be regarded as the...
|
|
|
Advection character and timing of climatic seasons
Pekař, Bronislav ; Sládek, Ivan (advisor) ; Novák, Martin (referee)
Advection character and timing of climatic seasons Thesis deals with the timing of climatological seasons depending on the temperature and wind direction at 850 hPa level. The theoretical part deals with defining seasons in different ways and climatological processes in Europe. The practical part deals with the verifying of basic hypothesis and the individual steps of the procedure, leading to the timing of climatic seasons depending on the temperature and wind direction. The main method is the method of cumulative series, devised by RNDr. Ivan Sládek, CSc. Western stream over the Bohemia is mainly characterized by cold advection from April 9 to October 21 (advection summer), by warm advection from October 20 to April 9 (advection winter). Eastern stream is mainly characterized by warm advection from April 9 to September 17 and by cold advection from September 17 to April 9. Keywords Advection, circulation processes, climatological seasons, method of cumulative series, timing of climatological seasons.
|
|
|
Alpine glaciers retreat after little ice age and its relation to climate changes
Dutková, Alena ; Sládek, Ivan (advisor) ; Zelenka, Přemysl (referee)
This thesis deals with climatic changes and its influence on mountain glaciers in Alps since the little ice age to present. Knowledge published in domestic and foreign literature is applied to the example of Morteratsch glacier in swiss Alps and high elevation meteorological station Sonnblick in austrian Alps. Alpine mountain range is one of the most researched and the longest populated mountain ranges in the world. For this reasons we have for use long time period of meteorological and glaciological datasets.
|
|
|
Climatological evaluation of drought on the territory of Bohemia and Moravia in the years 1875-2002
Blinka, Petr ; Sládek, Ivan (advisor) ; Klabzuba, Jiří (referee) ; Munzar, Jan (referee)
The thesis arose with the support of the project "Long-term changes in the regime of occurrence of extreme drought in Czechia". The drought evaluation was based on 8 weather stations which were chosen according to the length of their measurement. They represent the climate of lower and central positions. Two main aims are followed: quantification of drought severity in calendar units (years, vegetation seasons - months April till September) and determining of most considerable dry spells. Beside two new indices DI and EvaDI the drought severity was also quantified by EDI which is based on the concept of the effective precipitation method proposed by H. R. Buyn a D. A. Wilhite. We paid special attention to the weather station Prague-Klementinum for which we estimated values of daily potential evapotranspiration. We used these estimates together with daily precipitation values for calculation of three other new drought indices EDImod, EDI2 and EvaDI2. We determined the most considerable dry spells by using the effective precipitation method. We also tried to identify dry spells which occurred at the same time at all weather stations. At the weather station Prague-Klementinum we tested out the modified effective precipitation method. Beside daily precipitation our modification also counts with values...
|
|
| |
|
|
Optimal timing of summer vacances with regard to climate
Kothan, Filip ; Sládek, Ivan (advisor) ; Novák, Martin (referee)
The aim of this paper is to suggest a method, how to find a period of summer holidays with the best weather, because this holidays should enable scholars to do sports in nature. It was evaluated on basis of air temperature, sunshine and precipitation. So it was necessary to find holidays with the highest air temperature, maximum of sunshine total and minimum of precipitation total in the year. The provided values of these meteorological elements derive from weather stations of Doksany, Praha Ruzyně and Brno Tuřany. These databases contain fifty - year series of measured values of elements mentioned above for the period 1. 1. 1961 - 31. 12. 2010. At first the holiday periods favourable according to individual meteorological elements were calculated. Then the results of these calculations were used to find the final holiday period, favourable according to more than one element. Specifically the air temperature and sunshine were meant. The required period, suitable according to daily average air temperature and daily total sunshine, begins on 19th June and ends on 19th August. The period, calculated on basis of daily average air temperature and day length, begins on 14th June and ends on 14th August.
|
|
|
The climate of Norway as a factor influencing tourism
Lhotka, Ondřej ; Sládek, Ivan (advisor) ; Míková, Taťána (referee)
This bachelor's work describes the elements of Norwegian climate, which have immediate influence on human activities in the nature. This work insist on the regime of sunshine in reference to the astronomical and meteorological factors. The duration of daylight and the presence of the polar day and the polar night is described for several places in Norway. The sunny and dark periods are defined for Oslo and Tromsø, the amount of cloud cover throught the year is illustrated, too. The temperature conditions are characterised throught the use of the map with mean annual temperature and the tables with mean month temperatures, mean month minimum temperatures and extreme temperatures. The wind regime is described in the table and illustrated throught the use of five wind roses. After it there is a map with mean annual precipitation and the tables with mean month precipitatation and the amount of precipitatation-days for several places. The height of the snow cover throught the year is described, too. At the end there is a suggestion about the content of "climatic guidebook" and a recommendation of proper time for visiting Norway.
|
|
|
Barriers to the Development of Wind Energy Use in the Czech Republic
Lukeš, Petr ; Sládek, Ivan (advisor) ; Voják, Karel (referee)
The development of the wind energy exploitation is a sum of processes which are subject to variety of heterogeneous factors. The nature and the leverage power of those factors vary and develop over time. Each regional or national location can be characterized by variety of factors, which are specific for respective locations. The wind energy development in the Czech Republic is influenced by number of barriers which restrain or slow down further progress. These barriers stem from environmental, economical, social and institutional disposition/nature of respective technologies. This thesis at first, based on available qualitative and quantitative data, describes and analyzes the situation and development of the wind energy exploitation. Specifics of the wind energy are placed in the context of selected European countries where factors and barriers influencing the development is described. The theme is regarded with spatio-temporal distribution of a "new technology". The thesis goes on focusing on identification of barriers that have impact on the wind energy development in the Czech Republic. Those restrictions/barriers are subsequently confronted with stands and perception of specific stakeholders, which are involved in the process. Analyses are carried out not only on individual barriers but also...
|
|
|
Evaluation of possibilities of renewable energy sources application in selected objects of the CHMI
Kudela, Tomáš ; Sládek, Ivan (advisor) ; Minařík, Lukáš (referee)
This bachelor thesis is dedicated to the use of renewable sources of energy in practice, namely in the Czech Hydrometeorological Institute (CHMI) objects, such as professional meteorological stations or observatories. The first part of bachelor thesis deals with the description of the alternative energy sources, the principles of acquisition and processing for the needs of the energy industry. The second part relates to devices already installed in CHMI objects and zooms technological solutions and experiences with the operation of these facilities. The third part presents a proposal for the use of specific devices for selected CHMI objects. Key words: renewable sources of energy, solar energy, wind energy, hydro energy, heat pumps, biomass, meteorological stations
|
guest ::
RSS feed.