Studie použití dat AMDAR pro jejich asimilaci v NWP modelu ALADIN
Study of AMDAR data in NWP model ALADIN
diploma thesis (DEFENDED)
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Permanent link
http://hdl.handle.net/20.500.11956/21085Identifiers
Study Information System: 47722
Collections
- Kvalifikační práce [10690]
Author
Advisor
Consultant
Trojáková, Alena
Skřivánková, Pavla
Referee
Brechler, Josef
Faculty / Institute
Faculty of Mathematics and Physics
Discipline
Meteorology and Climatology
Department
Department of Atmospheric Physics
Date of defense
19. 5. 2009
Publisher
Univerzita Karlova, Matematicko-fyzikální fakultaLanguage
Czech
Grade
Excellent
The impact of assimilation (using 3D-Var method) of aircraft measurements on forecasts of the numerical model ALADIN is studied in the present work. Methods of measuring several meteorological parameters by aircrafts and their recording to AMDAR message are shown. So called BLUE equation for production of an analysis (the best assessment of the state of atmosphere represented by a numerical model) is deduced. The equivalence between the BLUE equation and a minimization of the quadratic functional used by 3D-Var is shown. Essentials steps of integrating meteorological measurements to assimilation procedure are outlined. The process of assimilation used in Czech Hydrometeorological Institute is shown and the results of aircraft measurements assimilation are presented.