the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Experimental techniques for the calibration of lidar depolarization channels in EARLINET
Livio Belegante
Volker Freudenthaler
Doina Nicolae
Anca Nemuc
Dragos Ene
Lucas Alados-Arboledas
Aldo Amodeo
Gelsomina Pappalardo
Giuseppe D'Amico
Francesco Amato
Ronny Engelmann
Holger Baars
Ulla Wandinger
Alexandros Papayannis
Panos Kokkalis
Sérgio N. Pereira
Abstract. Particle depolarization ratio retrieved from lidar measurements are commonly used for aerosol-typing studies, microphysical inversion, or mass concentration retrievals. The particle depolarization ratio is one of the primary parameters that can differentiate several major aerosol components but only if the measurements are accurate enough. The accuracy related to the retrieval of particle depolarization ratios is the driving factor for assessing and improving the uncertainties of the depolarization products. This paper presents different depolarization calibration procedures used to improve the quality of the depolarization data. The results illustrate a significant improvement of the depolarization lidar products for all the selected lidar stations that have implemented depolarization calibration procedures. The calibrated volume and particle depolarization profiles at 532 nm show values that fall within a range that is generally accepted in the literature.
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