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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/2261/518842861677c-3ca8-4296-ba8c-363e5d0df4d0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Nakajima2003JGRA_H24P85.pdf (1.2 MB)
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| 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× Nakajima, Teruyuki× Shi, Guangyu× Suzuki, Tsuneaki× 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 |
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| 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 | |||||
