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Efficient calculation of radiative intensity including the polarization effect in moderately thick atmospheres using a truncation approximation
https://oacis.repo.nii.ac.jp/records/2453
https://oacis.repo.nii.ac.jp/records/2453e39373c0-56e3-4362-a43d-506e31206a55
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-05-17 | |||||
タイトル | ||||||
タイトル | Efficient calculation of radiative intensity including the polarization effect in moderately thick atmospheres using a truncation approximation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Polarization radiative transfer Delta-M method, Truncation correction methods, Sky radiance measurements | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
著者 |
Momoi, Masahiro
× Momoi, Masahiro× Irie, Hitoshi× Nakajima, Teruyuki× Sekiguchi, Miho |
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書誌情報 |
Journal of Quantitative Spectroscopy and Radiative Transfer 巻 277, p. 107976, 発行日 2022-01 |
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抄録 | ||||||
内容記述 | The computational efficiency of solving the radiative transfer equation is an important issue for remote sensing and monitoring of aerosols and radiation. This study developed a novel calculation method for polarized radiance named Pn-IMS (Improved Multiple and Single scattering approximation by n-th order multiple scattering correction of the forward Peak Pn), consisting of P1-IMS, P2-IMS and P3-IMS. The P1- and P2-IMS methods are extended versions of the TMS (Truncated Multiple and Single scattering approximation) and IMS (Improved Multiple and Single scattering approximation) methods of Nakajima and Tanaka (1988), and are, respectively, the first and secondary order scattering corrections of the forward peak of the scattering phase function in the scalar approximation of the radiation field. We extended these methods to include the polarization effect based on the vector radiative transfer theory. We also developed the third order scattering correction named P3-IMS method and generalized the formula for any n-th order scattering. A series of numerical tests were performed to indicate that the P1-IMS method is accurate enough to reconstruct the Stokes parameters to within 0.2% with a hemispheric Gaussian stream number as low as N = 10 in the hemisphere, except for total radiance. The total radiance in the solar aureole region requires a higher order scattering correction by the P2- and P3-IMS methods. Numerical tests indicated that the P2- and P3-IMS methods have an accuracy within 5 and 1%, respectively, with N = 10 in the 340–1020 nm spectral region in a moderately thick atmosphere at an aerosol optical thickness at 500 nm of < 1. Thus, the P3-IMS method is an efficient calculation method more than the single scattering correction method required N > 20. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0022-4073 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA0070576X | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.jqsrt.2021.107976 | |||||
情報源 | ||||||
関連識別子 | https://doi.org/10.1016/j.jqsrt.2021.107976 | |||||
関連名称 | Publisher's Version/PDF (OpenAccess) | |||||
情報源 | ||||||
関連識別子 | https://www.elsevier.com/ja-jp | |||||
関連名称 | Elsevier B.V. | |||||
出版者 | ||||||
出版者 | Elsevier B.V. |