Preprints
https://doi.org/10.5194/amt-2021-80
https://doi.org/10.5194/amt-2021-80

  24 Mar 2021

24 Mar 2021

Review status: this preprint is currently under review for the journal AMT.

Mie–Raman-Fluorescence lidar observations of aerosols during pollen season in the north of France 

Igor Veselovskii1, Qiaoyun Hu2, Philippe Goloub2, Thierry Podvin2, Marie Choël3, Nicolas Visez4, and Mikhail Korenskiy1 Igor Veselovskii et al.
  • 1Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
  • 2Univ. Lille, CNRS, UMR 8518 - LOA - Laboratoire d’Optique Atmosphérique, Lille, 59000, France
  • 3Univ. Lille, CNRS, UMR 8516 - LASIR - Laboratoire de Spectrochimie Infrarouge et Raman, 59000, Lille, France
  • 4Univ. Lille, CNRS, UMR 8522 - PC2A - Physicochimie des Processus de Combustion et de l’Atmosphère, 59000, Lille, France

Abstract. Multiwavelength Mie–Raman–fluorescence lidar of Lille University with the capability to measure three aerosol backscattering, two extinction coefficients and three linear depolarization ratios together with the fluorescence backscattering at 466 nm was used to characterize aerosols during the pollen season in the north of France for the period March – June 2020. The results of observations demonstrate that the presence of pollen grains in aerosol mixture leads to an increase of the depolarization ratio. Moreover, the depolarization ratio exhibits a strong spectral dependence increasing with wavelength, which is expected for the mixture containing fine background aerosols with low depolarization and strongly depolarizing pollen grains. High depolarization ratio correlates with the enhancement of the fluorescence backscattering, corroborating the presence of pollen grains. Obtained results demonstrate that simultaneous measurements of particle depolarization and fluorescence allows to separate dust, smoke particles and aerosol mixtures containing the pollen grains.

Igor Veselovskii et al.

Status: open (until 19 May 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-80', Anonymous Referee #1, 05 Apr 2021 reply
  • RC2: 'Comment on amt-2021-80', Anonymous Referee #2, 19 Apr 2021 reply

Igor Veselovskii et al.

Igor Veselovskii et al.

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Short summary
Multiwavelength Mie–Raman–fluorescence lidar of Lille University was used to characterize aerosols during the pollen season in the north of France for the period March – June 2020. The results of observations demonstrate that the presence of pollen grains in aerosol mixture leads to an increase of the depolarization ratio and to the the enhancement of the fluorescence backscattering.