Institut für Meteorologie und Geophysik Universität Wien seit 1851 4D OMEGA FORM 1 4D-Objective...
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Transcript of Institut für Meteorologie und Geophysik Universität Wien seit 1851 4D OMEGA FORM 1 4D-Objective...
Institut für Meteorologie und Geophysik
Universität Wienseit 1851
4D OMEGA FORM1
4D-Objective MEsoGamma Analyses of FOehn in the Rhine
Valley during MAP
Simon Tschannett, Barbara Chimani & Reinhold Steinacker
1 funded by the Austrian Science Fund FWF Project Nr.: P17332-N13
Bad Ragaz Nov. 2004 FORM-Meeting
• Project Ideas
• Data
• Analysis Tool
• First results
Content
Quelle: www.wolkenatlas.de
Bad Ragaz Nov. 2004 FORM-Meeting
Project Ideas• Development of 3D - 4D analysis system
(with focus on Foehn in the Rhine Valley)
– Wind-pressure field interaction– Cross Validation
• Comparison of foehn in the Rhine Valley and Wipp Valley
• Model Comparison (MM5, MesoNH, MC2)– Intercomparison (on a common grid)
– Model - Analysis
• Development of Nowcasting tool
Bad Ragaz Nov. 2004 FORM-Meeting
Data
• Surface stations• Radiosondes• Lidar• Radar• Sodar• Windprofiler• Aircrafts (MAP, AMDARs)
• Dropsondes• Constant Level Balloons
From MAP-Data-Center, with friendly support by Esther Häller
Special Project at ECMWF
Bad Ragaz Nov. 2004 FORM-Meeting
Analysis Tool
• New analysis method similar to VERA Variational analysis + fingerprints (dynamic downscaling)
– Development of new data-quality-control (Bayesian)– Considering of anisotropy in data distribution and in
nature in space and time
• Calculates on a regular grid • Necessary because of higher dimensions• Using cascading system and nesting
VERAXX
Bad Ragaz Nov. 2004 FORM-Meeting
Bad Ragaz Nov. 2004 FORM-Meeting
First ResultsVERAXX
VERA
2D
Bad Ragaz Nov. 2004 FORM-Meeting
Vertical Temperature Cross-SectionHorizontal Temperature Cross-Section
S N
Air Temperature 15.11.2002 18UTC
3D
Bad Ragaz Nov. 2004 FORM-Meeting
Dissertations• Multidimensional analyses taking non-
conventional data sources into account (Barbara Chimani)
– Cross-Validation of analyses– Comparison of different data types
• Multidimensional analyses for Föhn dynamics research in the Rhine Valley (Simon Tschannett)
– Intercomparison of wind and pressure fields– Model comparison (mod-mod; mod-ana)
Bad Ragaz Nov. 2004 FORM-Meeting
Next steps
• Implementing of 4D and testing of the method with analytical data
• Data collection• Testing the analysis technique with real
data• Implementing fingerprints and
comprehensive data qualitiy control
• any questions?