Physical model for multiple scattered space-borne lidar returns from clouds

Kaori Sato, Hajime Okamoto, Hiroshi Ishimoto

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

A practical model for determining the time-dependent lidar attenuated backscattering coefficient β was developed for application to global lidar data. An analytical expression for the high-order phase function was introduced to reduce computational cost for simulating the angular distribution of the multiple scattering irradiance. The decay rate of the multiple scattering backscattered irradiance was expressed by incorporating the dependence on the scattering angle and the scattering order based on the path integral approach. The estimated β over time and the actual range showed good agreement with Monte Carlo simulations for vertically homogeneous and inhomogeneous cloud profiles, resulting in about 15% mean relative error corresponding to 4 times improved accuracy against the Ornstein- Förth Gaussian approximation method.

元の言語英語
ページ(範囲)A301-A319
ジャーナルOptics Express
26
発行部数6
DOI
出版物ステータス出版済み - 3 19 2018

Fingerprint

optical radar
scattering
irradiance
decay rates
backscattering
angular distribution
costs
coefficients
profiles
approximation
simulation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

これを引用

Physical model for multiple scattered space-borne lidar returns from clouds. / Sato, Kaori; Okamoto, Hajime; Ishimoto, Hiroshi.

:: Optics Express, 巻 26, 番号 6, 19.03.2018, p. A301-A319.

研究成果: ジャーナルへの寄稿記事

@article{a9699fc582244447adfca5447a3f5229,
title = "Physical model for multiple scattered space-borne lidar returns from clouds",
abstract = "A practical model for determining the time-dependent lidar attenuated backscattering coefficient β was developed for application to global lidar data. An analytical expression for the high-order phase function was introduced to reduce computational cost for simulating the angular distribution of the multiple scattering irradiance. The decay rate of the multiple scattering backscattered irradiance was expressed by incorporating the dependence on the scattering angle and the scattering order based on the path integral approach. The estimated β over time and the actual range showed good agreement with Monte Carlo simulations for vertically homogeneous and inhomogeneous cloud profiles, resulting in about 15{\%} mean relative error corresponding to 4 times improved accuracy against the Ornstein- F{\"o}rth Gaussian approximation method.",
author = "Kaori Sato and Hajime Okamoto and Hiroshi Ishimoto",
year = "2018",
month = "3",
day = "19",
doi = "10.1364/OE.26.00A301",
language = "English",
volume = "26",
pages = "A301--A319",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "6",

}

TY - JOUR

T1 - Physical model for multiple scattered space-borne lidar returns from clouds

AU - Sato, Kaori

AU - Okamoto, Hajime

AU - Ishimoto, Hiroshi

PY - 2018/3/19

Y1 - 2018/3/19

N2 - A practical model for determining the time-dependent lidar attenuated backscattering coefficient β was developed for application to global lidar data. An analytical expression for the high-order phase function was introduced to reduce computational cost for simulating the angular distribution of the multiple scattering irradiance. The decay rate of the multiple scattering backscattered irradiance was expressed by incorporating the dependence on the scattering angle and the scattering order based on the path integral approach. The estimated β over time and the actual range showed good agreement with Monte Carlo simulations for vertically homogeneous and inhomogeneous cloud profiles, resulting in about 15% mean relative error corresponding to 4 times improved accuracy against the Ornstein- Förth Gaussian approximation method.

AB - A practical model for determining the time-dependent lidar attenuated backscattering coefficient β was developed for application to global lidar data. An analytical expression for the high-order phase function was introduced to reduce computational cost for simulating the angular distribution of the multiple scattering irradiance. The decay rate of the multiple scattering backscattered irradiance was expressed by incorporating the dependence on the scattering angle and the scattering order based on the path integral approach. The estimated β over time and the actual range showed good agreement with Monte Carlo simulations for vertically homogeneous and inhomogeneous cloud profiles, resulting in about 15% mean relative error corresponding to 4 times improved accuracy against the Ornstein- Förth Gaussian approximation method.

UR - http://www.scopus.com/inward/record.url?scp=85044123987&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044123987&partnerID=8YFLogxK

U2 - 10.1364/OE.26.00A301

DO - 10.1364/OE.26.00A301

M3 - Article

AN - SCOPUS:85044123987

VL - 26

SP - A301-A319

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 6

ER -