A New Airborne Doppler Lidar for Boundary Layer Research & LES-Based Simulation

Airborne Doppler lidar measurements are a valuable tool in meteorological research. A new airborne Doppler lidar system has been developed jointly by the Karlsruhe Institute of Technology (KIT) and the Technical University of Brunswick. The system is designed for use aboard a medium-range turboprop aircraft, thereby targeting meso-scale flow phenomena. In order to optimize system setup and retrieval strategy, as well as evaluate measurement quality under turbulent conditions, a first LES-based airborne Doppler lidar simulator has been developed. The results provide detailed insight into airborne Doppler lidar wind profiling characteristics.

Airborne Chemical and Meteorological Measurements Made During the 1992 TRACT Experiment: Quality Control and Assessment

Three-dimensional fields of chemical and meteorological parameters over southwestern Germany were obtained by five aircraft during the TRACT experiment in September 1992. To ensure the homogeneous quality of the data and its compliance with the needs of data users, an extensive quality control and assessment (QA/QC) plan was devised and executed. The quality of O3, NO, NOy, SO2, and H2O2 measurements was assessed by intercomparisons at ground level against a set of standard instruments and in flight against each other. In-flight intercomparisons of air pressure, temperature, and humidity served also to assess the quality of meteorological measurements. The data quality objectives (DQOs) for TRACT were met with respect to all air quality parameters, except air temperature and humidity. The latter two measurements by different aircraft differed by a constant offset which can be corrected for.