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Variations of the carbon isotopic ratio in atmospheric CO_2 over the last 250 years recorded in an ice core from H15,Antarctica
https://doi.org/10.15094/00002912
https://doi.org/10.15094/00002912dbf3be98-96d7-4b47-b2d0-f6a89be61e58
名前 / ファイル | ライセンス | アクション |
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KJ00002364399 (1.0 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2000-11-01 | |||||
タイトル | ||||||
タイトル | Variations of the carbon isotopic ratio in atmospheric CO_2 over the last 250 years recorded in an ice core from H15,Antarctica | |||||
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 | 10.15094/00002912 | |||||
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 | ||||||
Scientific Paper | ||||||
論文名よみ | ||||||
その他のタイトル | Variations of the carbon isotopic ratio in atmospheric CO_2 over the last 250 years recorded in an ice core from H15,Antarctica | |||||
著者名よみ |
カワムラ, ケンジ
× カワムラ, ケンジ× ナカザワ, タカキヨ× マチダ, トシノブ× モリモト, シンジ× アオキ, シュウジ× イシザワ, ミサ× フジイ, ヨシユキ× ワタナベ, オキツグ |
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著者名(英) |
Kawamura, Kenji
× Kawamura, Kenji× Nakazawa, Takakiyo× Machida, Toshinobu× Morimoto, Shinji× Aoki, Shuhji× Ishizawa, Misa× Fujii, Yoshiyuki× Watanabe, Okitsugu |
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著者所属(英) | ||||||
en | ||||||
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University | ||||||
著者所属(英) | ||||||
en | ||||||
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute for Environmental Studies | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University | ||||||
著者所属(英) | ||||||
en | ||||||
Frontier Research System for Global Change, Institute for Global Change Research | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Variations of δ^<13>C in atmospheric CO_2 were reconstructed for the period of 1724 to 1961 by analyzing a high-accumulation ice core drilled at H15,Antarctica. Measured values of δ^<13>C were corrected for the gravitational enrichment which occurred in the firn, on the basis of the analytical results of δ^<15>N in N_2 in the core. From the vertical profile of δ^<15>N calculated using a diffusion model for the firn, it was suggested that the air in the layer shallower than 17m depth was mixed well with the atmosphere over the firn surface. The average value of δ^<13>C during the period 1724-1775 was found to be -6.67±0.11‰. δ^<13>C decreased secularly from this value to -7.33‰ in 1961,and its trend was enhanced especially after the late 19th century, corresponding to the long-term increase of the CO_2 concentration. CO_2 fluxes estimated by deconvolution analysis of the reconstructed CO_2 concentrations with the box-diffusion model accounted for the observed variations of δ^<13>C fairly well. It was also suggested that a dip of δ^<13>C found at the end of the 18th century was attributable to terrestrial biospheric CO_2 emissions enhanced under high air temperatures. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1129795X | |||||
書誌情報 |
Polar meteorology and glaciology 巻 14, p. 47-57, 発行日 2000-11 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |