Carbon dioxide variations in the Greenland Sea (scientific paper)
スポンサーリンク
概要
- 論文の詳細を見る
pCO_2 in the surface layer of the Greenland Sea shows spatial and temporal variations. Lower values appear in the western and northern part of the sea in August, rising in value eastward and southward. The east-west gradient of pCO_2 is larger than the north-south gradient. A positive relationship between pCO_2 and sea surface temperature (SST) was observed in the open water region; the rate of change was 0.06℃^<-1>. This rate cannot be explained only by the temperature dependence of CO_2 solubility in sea water because the observed rate is higher than that of the pure temperature effect. No relationship between pCO_2 and SST was found in the pack ice region. pCO_2 in the surface layer of the Greenland Sea was higher in April, followed by a dramatic decrease in mid-May. These lower values of pCO_2 were observed until the end of August. pCO_2 in the ocean surface layer was always lower than that in the atmosphere from April to August. The difference of pCO_2 between the atmosphere and the ocean was about 40 μatm in April and reached a maximum of about 190 μatm in mid-May. Therefore, the Greenland Sea seems to act as a strong sink for atmospheric CO_2,especially in summer. ΣCO_2 and δ^<13>C were vertically and latitudinally uniform below 200m depth in the Greenland Sea in August. The uniformity suggests strong vertical mixing of sea water. The mean values of ΣCO_2 and δ^<13>C below 200m were 2.13 mmol kg^<-1> and 1.2‰ respectively. ΣCO_2 and δ^<13>C above 200m depth had a linear relationship with a coefficient of -10‰ (mmol (kg)^<-1>)^<-1>, suggesting ΣCO_2 decrease caused by strong biological activity.
- 国立極地研究所の論文
著者
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張 紀久夫
阪大基:福井工大工
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Yamanouchi Takashi
National Institute of Polar Research
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Ushio Shuki
National Institute Of Polar Research
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Morimoto S
National Institute Of Polar Research Organization Of Information And Systems
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Nakazawa Takakiyo
Center for Atmospheric and Oceanic Studies, Tohoku University
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ITO Hajime
National Institute of Polar Research
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ONO Nobuo
National Institute of Polar Research
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Aoki Shuhji
Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University
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Morimoto Shinji
National Institute of Polar Research
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Vinge Torgny
Norwegian Polar Research Institute
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Nakazawa Takakiyo
Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
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Aoki Shuji
Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
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Aoki Shuhji
Center For Atmospheric And Oceanic Studies Faculty Of Science Tohoku University
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Yamanouchi Takashi
Geosystems Inc.
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Yamanouchi Takashi
National Institute For Polar Research
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Morimoto S
National Inst. Polar Res. Tokyo Jpn
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清水 明
東大教養
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Aoki Shuji
Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
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Aoki Shuhji
Faculty Of Science Tohoku University
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Aoki Syuji
National Institute Of Polar Research
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Mae S
National Institute Of Polar Research Research Organization Of Information And Systems
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Mae Shinji
Department Of Applied Physics Hokkaido University
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Nakazawa Takakiyo
Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.
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Ono N
National Institute Of Polar Research
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Nakazawa Takakiyo
Center For Atmospheric And Oceanic Studies Faculty Of Science
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Yamanouchi T
Graduate Univ. Advanced Studies Tokyo
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清水 明
Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
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Nakazawa T
Center For Atmospheric And Oceanic Studies Faculty Of Science
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Yamanouchi Takashi
National Inst. Of Polar Res. And Dep. Of Polar Sci. The Graduate Univ. For Advanced Studies 10-3 Mid
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Yamanouchi Takashi
National Institute Of Polar Research 10-3 Midoricho Tachikawa Tokyo Japan.
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Ushio S
National Institute Of Polar Research
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Mae Shinji
National Institute For Resources And Environment
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Morimoto Shinji
National Institute For Resources And Environment
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