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EFFECT OF VOLCANIC AEROSOLS ON THE POLAR STRATOSPHERIC TEMPERATURE
https://doi.org/10.15094/00003899
https://doi.org/10.15094/000038990c388db6-566e-4827-9655-15d2623ddffa
名前 / ファイル | ライセンス | アクション |
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KJ00001015016 (50.1 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1995-09-01 | |||||
タイトル | ||||||
タイトル | EFFECT OF VOLCANIC AEROSOLS ON THE POLAR STRATOSPHERIC TEMPERATURE | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003899 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
記事種別(英) | ||||||
en | ||||||
ABSTRACT | ||||||
論文名よみ | ||||||
その他のタイトル | EFFECT OF VOLCANIC AEROSOLS ON THE POLAR STRATOSPHERIC TEMPERATURE | |||||
著者名よみ |
シバタ, キヨタカ
× シバタ, キヨタカ |
|||||
著者名(英) |
SHIBATA, Kiyotaka
× SHIBATA, Kiyotaka |
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著者所属(英) | ||||||
en | ||||||
Meteorological Research Institute | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Using a fixed dynamical heating model, the effect of volcanic aerosols on the polar stratosphere is investigated, focused on the comparison between northern and southern hemispheres. The model resolution is, in the vertical, about 3km (23 layers) from 1000 to 0.05hPa, and 5° in latitude. The radiative calculation is made with a four-stream approximation for both the solar and infrared regions. NMC monthly mean temperature for 12 years (1979-1990) is used for the tropospheric temperature below 300 hPa and for the calculation of dynamical heating. Aerosol properties are taken principally from the LOWTRAN codes. Time integration starts on June 15. Ash-type aerosol shows much larger absorption in the solar region than emission and absorption in the infrared region, resulting in warming of the stratosphere in summer. Sulfate aerosol, on the other hand, does not absorb but reflects solar radiation, so that cooling and heating in the infrared region plays a dominant role in the entire region. In the southern hemisphere warming occurs in winter and cooling in summer, in sharp contrast with cooling in the whole year in the northern hemisphere. This prominent interhemispheric difference comes from that the southern winter is much colder, about 20K in mid-winter, than the northern winter. Whether sulfate aerosols induce warming or cooling strongly depends on the local atmospheric (temperature) condition. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10756213 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 巻 9, p. 190, 発行日 1995-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |