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Evalution of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations
Hajáková, Jaroslava ; Pešice, Petr (advisor) ; Kastner, Jiří (referee)
KAPITOLA ABSTRACT Abstract Topic of Mc. S. Thesis: Evaluation of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. Abstract: This paper focused on comparing the information from the satellite Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. The main goals of this study were to assess how satellite and radar data respond on development of convection and if the satellite data responds on intenzifying convection before the radar data. For this purpose, four significant convective situations and associated areas (72 x 72 km) were selected, and the satellite and radar data were preprocessed. Appropriate differences of spectral channels (i.e. satellite methods) and radar products were chosen. The preprocessing involved data synchronization in time and location. The parallax correction was used for satellite data. Seven satellite methods were used - spectral channel IR 10.8 (TIR10.8), difference of channels WV 0.6 and IR 10.8 (TWV6.2 - TIR10.8), IR 13.4 and IR10.8 (TIR13.4 - TIR10.8), IR 12.0 and IR 10.8 (TIR12.0 - TIR10.8), IR 8.7 and IR 10.8 (TIR8.7 - TIR10.8,), NIR 1.6 and VIS 0.6 (REFNIR1.6 - REFVIS0.6) and the trispectral method. The trispectral method resulted from measurements of...
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Anomalies of air temperature in Czech Republic
Šandová, Milada ; Kastner, Jiří (advisor) ; Moravčík, Luboš (referee)
This paper presents the spatial distribution of air temperature anomalies in the Czech Republic for three climatological periods: 1851-1900, 1901-1950, 1961-1990. Main stationary factors influencing climate in the Czech Republic are latitude, longitude and altitude. Therefore the temperature gradient, which was calculated by multidimensional linear stepwise regressions analysis, was expressed in a degree of latitude, longitude or hundred meters of altitude. The gradient was specified as monthly, seasonal and annual means of each period. The aim of the Mc. S. thesis was to determine areas with negative or positive anomaly and to explain the causes of the anomaly. For this purpose a method of deprivation of the stationary factors and their influences was developed. To avoid altitude influence, the monthly and annual temperature means were converted to sea level temperature. Afterwards, the gradients of average monthly and annual air temperature were used to avoid the latitude and longitude influence. The anomaly represents the deviation of the average value determined from values, which were deprived of geographical location. Resultant values were processed by Inverse Distance Weighted interpolation in the Geographical Information System (GIS) environment. The main result of this work is representation of...
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Evalution of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations
Hajáková, Jaroslava ; Kastner, Jiří (referee) ; Pešice, Petr (advisor)
KAPITOLA ABSTRACT Abstract Topic of Mc. S. Thesis: Evaluation of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. Abstract: This paper focused on comparing the information from the satellite Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. The main goals of this study were to assess how satellite and radar data respond on development of convection and if the satellite data responds on intenzifying convection before the radar data. For this purpose, four significant convective situations and associated areas (72 x 72 km) were selected, and the satellite and radar data were preprocessed. Appropriate differences of spectral channels (i.e. satellite methods) and radar products were chosen. The preprocessing involved data synchronization in time and location. The parallax correction was used for satellite data. Seven satellite methods were used - spectral channel IR 10.8 (TIR10.8), difference of channels WV 0.6 and IR 10.8 (TWV6.2 - TIR10.8), IR 13.4 and IR10.8 (TIR13.4 - TIR10.8), IR 12.0 and IR 10.8 (TIR12.0 - TIR10.8), IR 8.7 and IR 10.8 (TIR8.7 - TIR10.8,), NIR 1.6 and VIS 0.6 (REFNIR1.6 - REFVIS0.6) and the trispectral method. The trispectral method resulted from measurements of...
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