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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
The contribution of anticyclonic circulation to the asymetry of day-to-day temperature changes distribution
 Piskala, Vladimír ; Huth, Radan (advisor) ; Müller, Miloslav (referee)
The statistical distribution of daily changes in temperature is not symmetrical, and also the day-to-day temperature changes distribution varies for winter and summer. The aim of submitted thesis is to connect the asymmetry of distribution with physical causes. Specifically, the aim is to check the following hypothesis: the more frequent occurrence of coolings up to -3 řC in winter a heatings up to 3 řC in summer is associated with radiation balance during the anticyclonic flow over Central Europe. The relationship of day-to-day temperature changes with passages of atmospheric fronts is also described. Temperature changes in winter (December - February) are calculated from minimum temperatures while in summer (June - August) maximum temperatures are used. The study period covers years between 1961 and 1998. The Hess-Brezowsky catalogue of weather types, the HMÚ classification and selected classifications of COST733 database are used for description of circulation conditions in Central Europe. The connection of anticyclonic flow with frequent coolings in winter was not proved. On the other hand, in summer, the association between frequent warmings and anticyclonic flow was confirmed. In addition, the advection of cold air in winter and warm air in summer also contributes to asymmetry of the...
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Asymmetry of interdiurnal air temperature change distributions and their relationships to meterological conditions
 Piskala, Vladimír ; Huth, Radan (advisor) ; Křížová, Milada (referee)
Submitted bachelor thesis is focused on interdiurnal air temperature changes in connection with atmospheric fronts. The changes are counted for summer period (June - August) and winter period (December - February) between 1961 - 1998. There were used data of average air temperature from Praha Karlov and data of moving fronts from Praha Ruzyně. The results say that the statistical distribution of day-to-day air temperature aren't the same. The asymmetry are explained by different meteorological condition for both periods. Statistical distribution fronts aren't normal too, it can be explained by character and shape of individual front types. It is discussed role of time of observation individual fronts for counting day-to- day temperature changes in thesis too. Key words: air temperature, day-to-day changes, statistical distribution, atmospheric fronts, air masses
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