The first author is deeply indebted to Robert Banta, Lisa Darby, and Michael Hardesty from NOAA/ETL for the scientific support to acquire the skills of the Doppler lidar data analysis. We would like to thank Craig Walther from NCAR/ATD for preparing and providing the aerosol backscatter lidar data. Kathrin Baumann from ZAMG is acknowledged for providing the Doppler sodar instrument. We are indebted to Stephen Mobbs and Samantha Arnold from the University of Leeds for deploying the bulk of the surface weather stations in the Wipp Valley. Dale Durran from the University of Washington is acknowledged for his contribution to additional radiosoundings in the Brenner Pass region and for directing the Electra flights. This research was supported by the Austrian Science Fund FWF under Grants P13489 and P15077.
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