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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Characteristics of convective environment in ALADIN reanalysis
 Zacharov, Petr, jr. ; Vokoun, Martin
For the prediction and assessment of the potential for convective cloud formation, various characteristics of the convective environment are used. Values of CAPE, CIN, wind speed, and temperature at several standard levels are available from the ALADIN reanalysis outputs, from which wind shear and vertical temperature gradient can be calculated. Verification allows for point comparison with data from sounding measurements, for example, from Prague, Libuš.
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Characteristics of atmospheric convective environment
 Keprtová, Pavlína ; Řezáčová, Daniela (advisor) ; Žák, Michal (referee)
The quality of convective precipitation and storm prediction is dependent on the level of knowledge of the convective environment. Convective environment characteristics describe various conditions in the atmosphere which are suitable for the convective storm formation and evolution. The characteristics CAPE, wind shear S01, S03 and S06 were selected for the discussion of their properties and predictive ability. This master thesis deals with the CAPE and S0X values analysis in the Czech Republic during the period May-August 2005-2011. Furthermore it analyzes the distribution of the combined characteristics CAPE × S0X and index NDSEV, especially in the critical interval of values which indicate a storm occurrence. It also deals with the estimation of relationship between NDSEV index and the heavy precipitation occurrence in the Czech Republic. The verification criterion CSI was applied to the evaluation of various threshold values for the NDSEV index.
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