The ESA-EVE Polarization Lidar for Assessing the Aeolus Aerosol Product Perfomance
1 IAASARS, National Observatory of Athens, Athens, 15236, Greece
2 Aristotle University of Thessaloniki, Greece
3 Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft und Raumfahrt, Germany
4 National Institute of R&D for Optoelectronics, Romania
5 Ludwig-Maximilians-Universitat, Germany
6 Raymetrics S.A., Greece
7 Directorate of Earth Observation Programmes, ESA-ESRIN, Italy
* Email: email@example.com
Published online: 7 July 2020
We present the EVE lidar concept, a combined linear/circular polarization system, tailored to evaluate the spaceborne ALADIN Doppler lidar system aerosol retrievals. EVE, currently under development, aims to provide the ESA-Aeolus mission with a flexible, mobile reference ground-based lidar system capable of providing well-characterized fiducial reference measurements of aerosol optical properties. Since ALADIN detects only the co-polar component of the backscattered circularly polarized radiation, a portion of the received radiation gets lost, leading to an un-derestimation of the backscatter coefficient and the circular depolarization ratio in strongly depolarizing scenes with non-spherical particles. The main focus of the new EVE lidar is to quantify these uncertainties and to evaluate aerosol backscatter/extinction retrievals for Aeolus, and later also for EarthCARE product validation, quality assessment and improvement.
© The Authors, published by EDP Sciences, 2020
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