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Interannual temperature variability in Europe
Švábek, David ; Huth, Radan (advisor) ; Mikšovský, Jiří (referee)
This master thesis is focused on interannual variability of air temperature throughout Europe and its long-term trends. Alongside changes in average air temperature, it is the changes in variability that fundamentally affect meteorological extremes. Therefore, those are fundamental climate characteristics at which we do not know yet if they are changing and if so, in what direction. The changes seem to differ between individual regions, seasons and timescales. Changes behave differently when they are short-term (interday to interseasonal) and when they are long-term (interannual). These interannual changes are the main topic of this master thesis. In the review part of the thesis, the scientific literature is summarized, supplemented by changes in interannual variability both globally and regionally for the territory of Europe, namely for individual seasons. The objective of the practical part of the paper is the analysis of long-term interannual temperature variability in the period from 1 March 1961 to 28 February 2018, for each season separately. The objective of this work is not only to quantify the trends of interannual temperature variability but also to compare them among five different climate databases, as most scientific studies that analyse long-term changes in variability have been...
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Long-term precipitation changes in Europe in different data sources
Vít, Václav ; Huth, Radan (advisor) ; Crhová, Lenka (referee)
The subject of this diploma thesis is the analysis of long-term changes in precipitation in Europe over the period 1961 - 2011. Emphasis is placed on determining differences in values of trends in precipitation among selected data sources and on analyzing the spatial distribution of annual and seasonal changes in precipitation in Europe, including a discussion of possible causes of differences in these changes in individual areas. Another aim is to illustrate, describe and account for the differences in trend values among different data sources: the ECA&D station database, the interpolation network data sets E-OBS and CRU TS and two reanalyses JRA-55 and NCEP/NCAR. Depending on the amount and quality of data available for the comparison of data sets, changes in precipitation totals were described over a long-term scale in absolute and also, to a lesser degree, in relative values. The first part summarizes the scientific literature dealing with the changes in precipitation characteristics throughout the world and in Europe. There follows a description of the suitability of individual types of data sources for estimating trends in precipitation totals. Scientific articles usually describe long-term changes based on a single data source rather than using a variety of individual types of data sources....
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Temperature trends in Europe estimated from different data sources
Krauskopf, Tomáš ; Huth, Radan (advisor) ; Pokorná, Lucie (referee)
This paper deals with the analysis of long-term temperature changes in Europe in the period 1957-2002 with an emphasis on the evaluation of the differences in values of temperature trends among selected data sources. One of the objectives of this paper is to analyze the spatial distribution of warming in Europe in individual seasons and to attempt to discuss the causes of different warming rates in different areas. Another aim of this thesis is to show, describe and justify differences in temperature trends between three different data sources: the ECA&D station database, the E-OBS interpolation network data set and the ERA-40 reanalysis. Despite the slight differences in the minimum and maximum temperature trends, the long-term mean surface air temperature change is mainly described. In the first part of the thesis we summarize the scientific literature dealing not only with warming in Europe but also the suitability of individual types of data sources for estimating the temperature trends. Most scientific articles at European level describe a long-term temperature change based on only one data source and do not analyze differences in temperature trends between databases. This diploma thesis should bring new or more detailed knowledge of these differences together with their justification. For...
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