Stratton Park Engineering Company Inc



Traditional in situ probes have tiny sampling volumes that may not be representative of whole clouds. SPEC's In Situ Cloud Lidar uses multiple scattering of laser pulses inside clouds to measure extinction proportional to droplet area averaged over large volumes (10⁵ to 10⁸ m³). It can also determine cloud boundaries and cloud inhomogeneity. Uses 532 nm wavelength laser beam. Tests show in situ cloud lidar can operate during daytime.	SPEC flew successful Phase-II flights of the In Situ Cloud Lidar in maritime stratus clouds. Upward and downward wide field of view detectors on wingtip opposite from laser beam measure time series of multiply scattered photons. In Situ Cloud Lidar can be used on research aircraft or in ground-based research of fog, fire emissions or polar regions.
Much of the theoretical design, analysis and validation of the SPEC In Situ Cloud Lidar was completed by Dr. Frank Evans of the University of Colorado at Boulder. His website contains additional information on the In Situ Cloud Lidar, including a research paper, science poster, and the theory of operation. SPEC is very pleased to be working with Dr. Evans on this project.
Briefing Chart for SBIR Phase I Proposal for Dual Wavelength In Situ Cloud Lidar (PowerPoint Slide with sound)

	SPEC Inc. 3022 Sterling Circle, Suite 200 Boulder, CO 80301. USA Phone 303-449-1105 Fax 303-449-0132