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  1. 139 大気海洋研究所
  2. 10 気候システム研究系
  3. 1391010 学術雑誌
  1. 0 資料タイプ別
  2. 10 学術雑誌論文
  3. 014 自然科学

An optimal approach to overlapping bands with correlated k distribution method and its application to radiative calculations

http://hdl.handle.net/2261/51884
http://hdl.handle.net/2261/51884
2861677c-3ca8-4296-ba8c-363e5d0df4d0
名前 / ファイル ライセンス アクション
Nakajima2003JGRA_H24P85.pdf Nakajima2003JGRA_H24P85.pdf (1.2 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-01-10
タイトル
タイトル An optimal approach to overlapping bands with correlated k distribution method and its application to radiative calculations
言語
言語 eng
キーワード
主題Scheme Other
主題 atmospheric absorption
キーワード
主題Scheme Other
主題 correlated k distribution
キーワード
主題Scheme Other
主題 overlapping band
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Zhang, Hua

× Zhang, Hua

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Zhang, Hua

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Nakajima, Teruyuki

× Nakajima, Teruyuki

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Nakajima, Teruyuki

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Shi, Guangyu

× Shi, Guangyu

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Shi, Guangyu

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Suzuki, Tsuneaki

× Suzuki, Tsuneaki

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Suzuki, Tsuneaki

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Imasu, Ryoichi

× Imasu, Ryoichi

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Imasu, Ryoichi

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著者所属
著者所属 Integrated Modeling Research Program, Frontier Research System for Global Change
著者所属
著者所属 Center for Climate System Research, University of Tokyo
著者所属
著者所属 State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics
抄録
内容記述タイプ Abstract
内容記述 It is found that the possibly achieved higher accuracy cannot be obtained for all overlapping bands if only one scheme is used to treat them in atmospheric absorption calculations. The commonly used multiplication transmittance scheme is not acceptable when correlation existing in the practical absorption spectra becomes strong. Therefore an optimized scheme to obtain k distribution parameters for overlapping bands is developed in this paper based on the completely uncorrelated, perfectly correlated, and partly correlated schemes. Two partial correlation formulae are given in the paper. Calculations of radiative flux and atmospheric heating (or cooling) rate are validated in detail using a line-by-line model described in the paper for six model atmospheres. The optimized scheme developed here has an accuracy in longwave clear skies of 0.07 Kd(-1) in the entire troposphere and 0.35 Kd(-1) above the tropopause; the accuracy of upward, downward, and net fluxes is 0.76 Wm(-2) at all altitudes. In shortwave region, the absolute errors of the heating rate are less than 0.05 Kd(-1) in the troposphere and less than 0.25 Kd(-1) above the tropopause; net flux errors are less than 0.9 Wm(-2) at all altitudes. For an ensemble of 42 diverse atmospheres, the new scheme guarantees an average maximum error of longwave heating rate of 0.068 Kd(-1) in troposphere, 0.22 Kd(-1) above tropopause, and an accuracy of 1.1 Wm(-2) of radiative net flux for all the levels. For a case of doubled CO2 concentration, radiative forcing calculations have an accuracy of 0.04 Wm(-2).
書誌情報 Journal of geophysical research. D

巻 108, 号 D20, p. 4641, 発行日 2003-10-25
ISSN
収録物識別子タイプ ISSN
収録物識別子 01480227
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10819765
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1029/2002JD003358
権利
権利情報 Copyright 2003 by the American Geophysical Union.
日本十進分類法
主題Scheme NDC
主題 451
出版者
出版者 American Geophysical Union
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://doir.org/10.1029/2002JD003358
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