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Lidar for Monitoring Dust Particle Orientation

Lidar for Monitoring Dust Particle Orientation by Alexandra Tsekeri, National Observatory of Athens, IAASARS July 7, 2022 Webinar sponsored by IEEE GRSS Dust orientation is an ongoing investigation in recent years. Its potential proof will be a paradigm shift for dust remote sensing, invalidating the currently used simplifications of randomly-oriented particles. Vertically-resolved measurements of dust orientation can be acquired with a polarization lidar designed to target the off-diagonal elements of the backscatter matrix which are non-zero only when the particles are oriented. We constructed the “WALL-E” lidar system emitting linear and elliptical polarized light and detecting various states of polarization of the backscattered light. Herein we present measurements of oriented rain and ice particles acquired in Athens, Greece, and first dust orientation measurements acquired during the ESA Campaign “ASKOS” at Minelo, Cabo Verde, in June 2022. More information at: https://www.grss-ieee.org/events/lida...