Articles | Volume 17, issue 3
https://doi.org/10.5194/amt-17-1023-2024
https://doi.org/10.5194/amt-17-1023-2024
Research article
 | 
12 Feb 2024
Research article |  | 12 Feb 2024

Derivation of depolarization ratios of aerosol fluorescence and water vapor Raman backscatters from lidar measurements

Igor Veselovskii, Qiaoyun Hu, Philippe Goloub, Thierry Podvin, William Boissiere, Mikhail Korenskiy, Nikita Kasianik, Sergey Khaykyn, and Robin Miri

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Short summary

Measurements of transported smoke layers were performed with a lidar in Lille and a five-channel fluorescence lidar in Moscow. Results show the peak of fluorescence in the boundary layer is at 438 nm, while in the smoke layer it shifts to longer wavelengths. The fluorescence depolarization is 45 % to 55 %. The depolarization ratio of the water vapor channel is low (2 ± 0.5 %) in the absence of fluorescence and can be used to evaluate the contribution of fluorescence to water vapor signal.