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Mapping of the air–sea CO2 flux in the Arctic Ocean and its adjacent seas: Basin-wide distribution and seasonal to interannual variability
https://nipr.repo.nii.ac.jp/records/13559
https://nipr.repo.nii.ac.jp/records/13559ca96b6de-f67b-4707-b16e-2b34b1d11114
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2016-10-07 | |||||
タイトル | ||||||
タイトル | Mapping of the air–sea CO2 flux in the Arctic Ocean and its adjacent seas: Basin-wide distribution and seasonal to interannual variability | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Mapping of the air–sea CO2 flux in the Arctic Ocean and its adjacent seas: Basin-wide distribution and seasonal to interannual variability | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Arctic Ocean | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CO2 flux | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Self-organizing map | |||||
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 | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Yasunaka, Sayaka
× Yasunaka, Sayaka× Murata, Akihiko× Watanabe, Eiji× Chierici, Melissa× Fransson, Agneta× van Heuven, Steven× Hoppema, Mario× Ishii, Masao× Johannessen, Truls× Kosugi, Naohiro× Lauvset, Siv K.× Mathis, Jeremy T.× Nishino, Shigeto× Omar, Abdirahman M.× Olsen, Are× Sasano, Daisuke× Takahashi, Taro× Wanninkhof, Rik |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We produced 204 monthly maps of the air–sea CO2 flux in the Arctic north of 60°N, including the Arctic Ocean and its adjacent seas, from January 1997 to December 2013 by using a self-organizing map technique. The partial pressure of CO2 (pCO2) in surface water data were obtained by shipboard underway measurements or calculated from alkalinity and total inorganic carbon of surface water samples. Subsequently, we investigated the basin-wide distribution and seasonal to interannual variability of the CO2 fluxes. The 17-year annual mean CO2 flux shows that all areas of the Arctic Ocean and its adjacent seas were net CO2 sinks. The estimated annual CO2 uptake by the Arctic Ocean was 180 TgC yr−1. The CO2 influx was strongest in winter in the Greenland/Norwegian Seas (>15 mmol m−2 day−1) and the Barents Sea (>12 mmol m−2 day−1) because of strong winds, and strongest in summer in the Chukchi Sea (∼10 mmol m−2 day−1) because of the sea-ice retreat. In recent years, the CO2 uptake has increased in the Greenland/Norwegian Sea and decreased in the southern Barents Sea, owing to increased and decreased air–sea pCO2 differences, respectively. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 北緯60度以北の北極海およびその周辺海域において、自己組織化マップを用いた手法により、1997年1月から2013年12月の大気海洋間CO2フラックスを推定した。海面CO2分圧データは、船舶航走観測によるもの、および、ボトル採水によるアルカリ度と全炭酸の測定値から計算したものを用いた。推定結果を用いて、CO2フラックスの広域分布と季節・経年変動特性を調べた。17年間の年平均CO2フラックスは、すべての海域で吸収となっていた。北極海のCO2吸収量は180 TgC yr−1と推定された。グリーンランド・ノルーウェー海とバレンツ海では、強い風のために、冬に最も大きなCO2吸収があった。チャクチ海では、海氷が減少する夏に最大のCO2吸収となる。近年、大気海洋間CO2分圧差の増減に伴い、グリーンランド・ノルーウェー海ではCO2吸収が増加し、バレンツ海南部ではCO2吸収が減少していた。 | |||||
書誌情報 |
en : Polar Science 巻 10, 号 3, p. 323-334, 発行日 2016-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1016/j.polar.2016.03.006 | |||||
関連名称 | 10.1016/j.polar.2016.03.006 |