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Since the Industrial Revolution, addition of anthropogenic CO_2 to the atmosphere has caused a significant increase in atmospheric CO_2,accompanied by a decrease in δ^\u003c13\u003eC of atmospheric CO_2. The relationship between them shows that the δ^\u003c13\u003eC value of CO_2 which remained in the atmosphere is significantly larger than -25‰ of that originated from coal burning and deforestation at mid-latitudes. So, we consider that the δ^\u003c13\u003eC value of CO_2 uptaken from the atmosphere should be small. Then we calculated the δ^\u003c13\u003eC value of CO_2 which remained in the atmosphere, obtaining a result of about -13‰. We considered that this fact would be useful as a new constraint on the anthropogenic CO_2 budget. On the other hand, IPCC 1994 reported the revised budget of anthropogenic CO_2 and emphasized that the problem of the missing sink of CO_2 was solved. So, as this budget is determined for carbon as an element (that is, ^\u003c12\u003eC), we examined the budget reported by IPCC for ^\u003c13\u003eC. In the anthropogenic CO_2 budget in IPCC 1994,for the sources the δ^\u003c13\u003eC values of 5.5Gt/yr of carbon which originates from emissions from fossil fuel burning, and 1.6Gt/yr from emission from deforestation in the tropical region may be given as -27‰ and -30‰, respectively. For the sinks, the δ^\u003c13\u003eC values of 3.2Gt/yr of carbon which remains in the atmosphere, 0.5Gt/yr in northern hemisphere forest regrowth and 1.4Gt/yr in additional terrestrial sinks may be given as -13‰, -25‰ and -30\u0026acd;-25‰, respectively. Therefore, as the result of calculation, δ^\u003c13\u003eC of 2.0Gt/yr of carbon which is uptaken in the ocean became very small. -54\u0026acd;-46‰. 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NEW CONSTRAINT ON ESTIMATION OF THE ANTHROPOGENIC CO_2 BUDGET : RELATIONSHIP BETWEEN CONCENTRATION AND δ^<13>C OF ATMOSPHERIC CO_2 DETERMINED FROM ICE CORE ANALYSIS
https://doi.org/10.15094/00004015
https://doi.org/10.15094/00004015bae37c80-0406-49fa-b1db-27228ad3e09e
名前 / ファイル | ライセンス | アクション |
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KJ00001014978 (81.5 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1997-11-01 | |||||
タイトル | ||||||
タイトル | NEW CONSTRAINT ON ESTIMATION OF THE ANTHROPOGENIC CO_2 BUDGET : RELATIONSHIP BETWEEN CONCENTRATION AND δ^<13>C OF ATMOSPHERIC CO_2 DETERMINED FROM ICE CORE ANALYSIS | |||||
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 | 10.15094/00004015 | |||||
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 | NEW CONSTRAINT ON ESTIMATION OF THE ANTHROPOGENIC CO_2 BUDGET : RELATIONSHIP BETWEEN CONCENTRATION AND δ^<13>C OF ATMOSPHERIC CO_2 DETERMINED FROM ICE CORE ANALYSIS | |||||
著者名よみ |
カトウ, キクオ
× カトウ, キクオ× コマキ, カオリ |
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著者名(英) |
KATO, Kikuo
× KATO, Kikuo× KOMAKI, Kaori |
|||||
著者所属(英) | ||||||
en | ||||||
Institute for Hydrospheric-Atmospheric Sciences, Nagoya University | ||||||
著者所属(英) | ||||||
en | ||||||
Institute for Hydrospheric-Atmospheric Sciences, Nagoya University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Studies on ice cores from Antarctica and Greenland revealed variations in the concentration and δ^<13>C of ancient atmospheric CO_2. Since the Industrial Revolution, addition of anthropogenic CO_2 to the atmosphere has caused a significant increase in atmospheric CO_2,accompanied by a decrease in δ^<13>C of atmospheric CO_2. The relationship between them shows that the δ^<13>C value of CO_2 which remained in the atmosphere is significantly larger than -25‰ of that originated from coal burning and deforestation at mid-latitudes. So, we consider that the δ^<13>C value of CO_2 uptaken from the atmosphere should be small. Then we calculated the δ^<13>C value of CO_2 which remained in the atmosphere, obtaining a result of about -13‰. We considered that this fact would be useful as a new constraint on the anthropogenic CO_2 budget. On the other hand, IPCC 1994 reported the revised budget of anthropogenic CO_2 and emphasized that the problem of the missing sink of CO_2 was solved. So, as this budget is determined for carbon as an element (that is, ^<12>C), we examined the budget reported by IPCC for ^<13>C. In the anthropogenic CO_2 budget in IPCC 1994,for the sources the δ^<13>C values of 5.5Gt/yr of carbon which originates from emissions from fossil fuel burning, and 1.6Gt/yr from emission from deforestation in the tropical region may be given as -27‰ and -30‰, respectively. For the sinks, the δ^<13>C values of 3.2Gt/yr of carbon which remains in the atmosphere, 0.5Gt/yr in northern hemisphere forest regrowth and 1.4Gt/yr in additional terrestrial sinks may be given as -13‰, -25‰ and -30∿-25‰, respectively. Therefore, as the result of calculation, δ^<13>C of 2.0Gt/yr of carbon which is uptaken in the ocean became very small. -54∿-46‰. This result cannot be explained by the observed fractionations for CO_2 exchange between the atmosphere and the ocean, photosynthesis and formation of carbonate. This indicates that the anthropogenic CO_2 budget reported by IPCC 1994 still has some problem. | |||||
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 11, p. 265, 発行日 1997-11 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |