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The Use of Light Detection And Ranging (LIDAR) for Determining Plume Characteristics. Progress Report
Wayson, Roger L.; Gregg G. Fleming; Brian Kim, U.S. DOT, Research and Special Programs Admin., John A. Volpe National Transportation Systems Center, Air Quality Facility, Cambridge, MA. Report Nos: FAA-AEE-01-02, DTS-34-FA12A-LR2, 7 pp, Jun 2001

The first study of the Emission and Dispersion Modeling System (EDMS) multi-year validation effort included gathering data on the initial plume characteristics from airplane exhaust. Input values previously used in the EDMS were primarily based on engineering judgment. With the improvements being made to EDMS Version 4.0 it became apparent that greater detail was needed for these data to continue the improvement in estimating local pollutant concentrations. Although LIDAR had never been used before in this application, it had been used for studies of wing-tip vortices and for other pollutant evaluations. The Volpe Center contacted NOAA, which has several LIDAR units and the flexibility to re-engineer the units and associated software on a project-by-project basis. NOAA supplied two units: one system used ultraviolet light as the scan laser and was called the Ozone Profiling Atmospheric Lidar (OPAL); the second unit used the infrared spectrum and was named the High Resolution Solid State Doppler Lidar (HRDL). Each unit was contained in a trailer. The OPAL system proved to be the more effective of the two systems in determining the plume parameters.


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