EPJ Web of Conferences (Jan 2020)

Aerosol Investigation During the Arctic Haze Season of 2018: Optical and Microphysical Properties

  • Nakoudi Konstantina,
  • Böckmann Christine,
  • Ritter Christoph,
  • Pefanis Vasileios,
  • Maturilli Marion,
  • Bracher Astrid,
  • Neuber Roland

DOI
https://doi.org/10.1051/epjconf/202023702002
Journal volume & issue
Vol. 237
p. 02002

Abstract

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In this work, optical and microphysical properties of Arctic aerosol as well as their radiative impact are investigated. Air-borne Lidar observations along with ground-based measurements are evaluated for the Arctic Haze season of 2018. Aerosol abundance as inferred from particle backscatter was typical for this period of the year, with nearly spherical and large particles. The inversion of microphysical properties yielded high Refractive Index (RI) together with low Single-Scattering Albedo (SSA), suggesting absorbing particles. A fitted lognormal volume distribution revealed a fine mode with effective radius (reff) of μm and a coarse mode with reff=0.75 μm. The total radiative balance on ground was positive (12 Wm-2).