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Spectral measurements\nof the degree of linear polarization (DoLP) and its related Stokes parameters Pq = −Q/I and Pu = U/I of\nStokes vector IS = [I Q U V]T were made for various snow and ice surfaces in Hokkaido, Japan. The measurement results indicated that the angular dependence on both the viewing angle and azimuth angle\nin the DoLP, Pq and Pu was significant especially in the shortwave infrared (SWIR) regions. In addition,\nan important finding here is that the measurements revealed for the first time the existence of neutral\npoints of Pq and Pu in the snow and bare ice surface. The SWIR polarization features can be explained by\nthe single scattering properties of snow/ice or surface reflection associated with surface scattering. For\nthe snow cases, the DoLP was represented by the measurement geometry and the scattering phase matrix while for the bare ice case, the DoLP was represented by the measurement geometry and the Fresnel\nreflection matrix. 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Spectral degree of linear polarization and neutral points of polarization in snow and ice surfaces
https://kitami-it.repo.nii.ac.jp/records/2000420
https://kitami-it.repo.nii.ac.jp/records/2000420af296a92-9c23-4dde-8719-775665dabcbf
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||||
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公開日 | 2023-04-20 | |||||||||||||||||||||||||||||
タイトル | ||||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||||
タイトル | Spectral degree of linear polarization and neutral points of polarization in snow and ice surfaces | |||||||||||||||||||||||||||||
言語 | ||||||||||||||||||||||||||||||
言語 | eng | |||||||||||||||||||||||||||||
資源タイプ | ||||||||||||||||||||||||||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||||||||||
タイプ | journal article | |||||||||||||||||||||||||||||
アクセス権 | ||||||||||||||||||||||||||||||
アクセス権 | open access | |||||||||||||||||||||||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||||||||||||||
著者 |
Tomonori Tanikawa
× Tomonori Tanikawa
× Kazuhiko Masuda
× Hiroshi Ishimoto
× Teruo Aoki
× Masahiro Hori
× Masashi Niwano
× Akihiro Hachikubo
× Sumito Matoba
× Konosuke Sugiura
× Takenobu Toyota
× Nozomu Ohkawara
× Knut Stamnes
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抄録 | ||||||||||||||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||||||||||||||
内容記述 | The properties of light reflected from snow and ice surfaces are important for the understanding of light scattering theory and the interpretation of remote sensing in the cryosphere. Spectral measurements of the degree of linear polarization (DoLP) and its related Stokes parameters Pq = −Q/I and Pu = U/I of Stokes vector IS = [I Q U V]T were made for various snow and ice surfaces in Hokkaido, Japan. The measurement results indicated that the angular dependence on both the viewing angle and azimuth angle in the DoLP, Pq and Pu was significant especially in the shortwave infrared (SWIR) regions. In addition, an important finding here is that the measurements revealed for the first time the existence of neutral points of Pq and Pu in the snow and bare ice surface. The SWIR polarization features can be explained by the single scattering properties of snow/ice or surface reflection associated with surface scattering. For the snow cases, the DoLP was represented by the measurement geometry and the scattering phase matrix while for the bare ice case, the DoLP was represented by the measurement geometry and the Fresnel reflection matrix. An additional remark is that the angular dependence of the neutral points was linked exclusively to the measurement geometry regardless of snow particle size, shape and scattering/absorbing inclusions in the ice. In contrast, the polarization in the visible regions was so small but remained detectable. However, the angular dependence of the neutral points was somewhat different from that in near infrared and SWIR regions. These results suggested that the neutral points depend on the polarization magnitude and the plane of polarization that related to the multiple scattering in the snow and atmosphere. The polarimetric measurements related to the neutral points are expected to be useful for the retrieval of new snow/ice physical parameters |
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言語 | en | |||||||||||||||||||||||||||||
書誌情報 |
en : Journal of Quantitative Spectroscopy & Radiative Transfer 巻 273, p. 107845 |
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DOI | ||||||||||||||||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||||||||||||||
関連識別子 | https://doi.org/10.1016/j.jqsrt.2021.107845 | |||||||||||||||||||||||||||||
権利 | ||||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||||
権利情報 | © 2021 The Authors. | |||||||||||||||||||||||||||||
出版者 | ||||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||||
出版者 | Elsevier | |||||||||||||||||||||||||||||
著者版フラグ | ||||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||||
値 | publisher | |||||||||||||||||||||||||||||
出版タイプ | ||||||||||||||||||||||||||||||
出版タイプ | VoR | |||||||||||||||||||||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |