| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2008-01-28 |
| タイトル |
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|
タイトル |
Monte Carlo simulations of spectral albedo for artificial snowpacks composed of spherical and non-spherical particles |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源 |
http://purl.org/coar/resource_type/c_6501 |
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タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Tanikawa, Tomonori
Aoki, Teruo
Hori, Masahiro
Hachikubo, Akihiro
Abe, Osamu
Aniya, Masamu
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The optical properties of snowpacks composed of spherical and non-spherical particles artificially prepared in a cold laboratory are investigated by measuring spectral albedos. The measured spectral albedo in the spectral region λ = 0.35 to 2.5 μm is compared with the theoretically calculated albedo, for which a Monte Carlo radiative transfer model is employed for multiple scattering combined with the Mie theory and the ray-tracing technique for single scattering by snow particles. Since the spherical particles are a little aggregate, the effects of cluster of the spheres on snow albedo are examined using a generalized multiparticle Mie-solution model (Xu, 1995, 2003). The snow albedo of cluster of the spheres can be represented with that of the singe sphere slightly larger than its component of the cluster in case of small grains. The observed albedos for the spherical snow particles agree with the theoretically calculated ones for the snow grain size measured in the snow pit work. The snow albedos for the non-spherical particles, which were dendrites, are influenced by the branch width and the branch length, based on a comparison of the theoretically calculated albedo using circular cylindrical snow particles and the observed albedo. The snow albedo in the near-infrared region depends on the branch width only when the branch length is sufficiently greater than the branch width. The comparison between the spherical and non-spherical snow particles indicates that the spectral albedo of the non-spherical particles can be represented using an equal volume/area ratio sphere. (c)2006 Optical Society of America |
| 内容記述 |
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内容記述タイプ |
Other |
|
内容記述 |
http://www.opticsinfobase.org/abstract.cfm?URI=ao-45-21-5310 |
| 書誌情報 |
Applied Optics
巻 45,
号 21,
p. 5310-5319,
発行日 2006-07
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| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
| 出版者 |
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出版者 |
Optical Society of America |
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言語 |
en |
| 著者版フラグ |
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|
言語 |
en |
|
値 |
author |
| 出版タイプ |
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
ao45_5310-5319.pdf (947.4 kB)
