Interpretation of lidar ratio and depolarization ratio of ice clouds using spaceborne high-spectral-resolution polarization lidar

Hajime Okamoto, Kaori Sato, Anatoli Borovoi, Hiroshi Ishimoto, Kazuhiko Masuda, Alexander Konoshonkin, Natalia Kustova

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)36587-36600
Number of pages14
JournalOptics Express
Volume27
Issue number25
DOIs
Publication statusPublished - Dec 9 2019

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ice clouds
optical radar
depolarization
spectral resolution
ice
high resolution
polarization
physical optics
radii
habits
geometrical optics
moisture content
integral equations
backscattering
optics
sensors
coefficients

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Interpretation of lidar ratio and depolarization ratio of ice clouds using spaceborne high-spectral-resolution polarization lidar. / Okamoto, Hajime; Sato, Kaori; Borovoi, Anatoli; Ishimoto, Hiroshi; Masuda, Kazuhiko; Konoshonkin, Alexander; Kustova, Natalia.

In: Optics Express, Vol. 27, No. 25, 09.12.2019, p. 36587-36600.

Research output: Contribution to journalArticle

Okamoto, Hajime ; Sato, Kaori ; Borovoi, Anatoli ; Ishimoto, Hiroshi ; Masuda, Kazuhiko ; Konoshonkin, Alexander ; Kustova, Natalia. / Interpretation of lidar ratio and depolarization ratio of ice clouds using spaceborne high-spectral-resolution polarization lidar. In: Optics Express. 2019 ; Vol. 27, No. 25. pp. 36587-36600.
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