Open AccessInterpretation of lidar ratio and depolarization ratio of ice clouds using spaceborne high-spectral-resolution polarization lidar
Author(s) -
Hajime Okamoto,
Kaori Sato,
Anatoli G. Borovoi,
Hiroshi Ishimoto,
Kazuhiko Masuda,
Alexander V. Konoshonkin,
Natalia V. Kustova
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.036587
Subject(s) - lidar , depolarization ratio , remote sensing , ice cloud , effective radius , optics , polarization (electrochemistry) , mie scattering , ice crystals , satellite , physics , materials science , geology , light scattering , scattering , radiative transfer , astrophysics , chemistry , astronomy , galaxy
The backscattering coefficient (β), lidar ratio (S), and depolarization ratio (δ) of ice particles were estimated over a wide range of effective radii to interpret spaceborne 355-nm high-spectral-resolution lidar data from the ATLID sensor onboard the EarthCARE satellite. Five randomly oriented ice particle shapes (3D ice) and two quasi-horizontally oriented particle types (2D ice) were analyzed using five effective angles. The size dependence of β, S, and δ was examined using physical optics and geometrical optics integral equation methods. Differences in β for the same effective radius and ice water content among particle types exceeded one order of magnitude. S-δ relations are useful for inferring ice particle habit and orientation using ATLID data from EarthCARE.