Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2021-12-24 |
タイトル |
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タイトル |
Shipboard observations of atmospheric oxygen in the Southern Ocean during the 2017–2018 austral summer |
タイトル |
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言語 |
en |
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タイトル |
Shipboard observations of atmospheric oxygen in the Southern Ocean during the 2017–2018 austral summer |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Atmospheric oxygen |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
O2/N2 |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Southern ocean |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
JARE |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Morimoto, Shinji
Takebayashi, Shuichiro
Goto, Daisuke
Hashida, Gen
Aoki, Shuji
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抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
An in situ measurement system was developed for continuous observations of the mole fractions of atmospheric oxygen (defined as δ(O2/N2)) and carbon dioxide (CO2) and the continuous observation was conducted onboard the research vessel SHIRASE 5003 during its voyage between Australia and Syowa Station, Antarctica, in 2017–2018. The CO2 variation was low with respect to that of δ(O2/N2) in the Southern Ocean, suggesting that the land biospheric and fossil-fuel derived CO2 and O2 emissions negligibly influenced the observations. Therefore, the observed significant variations in the atmospheric O2/N2 can be attributed to the atmosphere-ocean gas exchange. During the southbound voyage in December 2017, we observed large spatial variations in δ(O2/N2) due to marine biological production on the western side of the cruise track. Oceanic O2 fluxes based on a simple model and atmospheric δ(O2/N2) variability were consistent with past oceanic observations. No clear longitudinal gradient in δ(O2/N2) was observed at latitudes toward south of 60° S in December 2017 and February–March 2018. However, local δ(O2/N2) maxima were observed in regions with active marine biological production in December 2017. These observations indicate that local O2 fluxes can also modify the spatial distribution of atmospheric δ(O2/N2) in the Southern Ocean. |
書誌情報 |
en : Polar Science
巻 29,
p. 100691,
発行日 2021-09
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ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
18739652 |
DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.polar.2021.100691 |
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関連名称 |
10.1016/j.polar.2021.100691 |