Studies on the air-sea CO2 exchange in the Southern Ocean

南大洋海气CO2交换研究

• 批准号: 20310002
• 负责人: YOSHIKAWA Hisayuki
• 金额: $ 11.9万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20310002/
• 关键词: 物質循環; 南極海; 二酸化炭素分圧; 炭酸系; 海洋生物生産; 白鳳丸; 海鷹丸; 溶存無機炭; アルカリ度; 溶存無機炭素; 鉛直混合; 人為起源二酸化炭素; 海底地形; 生物生産; 南極底層水; 季節海氷域

We have conducted observational studies with the main objective of clarifying air-sea CO_2 flux and factors controlling it in the Southern Ocean. Measurements of partial pressure of CO_2, dissolved inorganic carbon, pH, and dissolved oxygen were made in the Southern Ocean over the period from December to January in FY2009 and FY2010. Observed results indicate that biological activity plays an important role in determining temporal/spatial distribution of air-sea CO_2 flux. By combining historical data, we determined the long-term increase of partial pressure of CO_2 in surface seawater and decrease of pH, mainly due to the oceanic CO_2 uptake.

我们进行了观测研究，主要目的是弄清南大洋的海气CO_2通量及其控制因素。在2009财年和2010财年的12月至1月期间，对南大洋的CO_2分压、溶解无机碳、pH和溶解氧进行了测量。观测结果表明，生物活动对海气CO_2通量的时空分布有重要影响。结合历史数据，我们确定了长期以来表层海水中CO_2分压的增加和pH值的下降，主要是由于海洋CO_2的吸收。

项目成果

Biogenic methane distribution in the South Pacific and the Southern Ocean in austral summer, 2001-2002

2001-2002年夏季南太平洋和南大洋生物甲烷分布

• 发表时间: 2011
• 期刊: J.Geophys.Res. accepted.
• 作者: Yoshida O.;Inoue H.Y.;Suzuki K.;Watanabe S.;Noriki D.
• 通讯作者: Noriki D.

Variations of oceanic pCO_2 and air-sea CO_2 flux in the eastern Indian sector of the Southern Ocean for the austral summer of 2001-2002

2001-2002年南半球夏季南大洋东印度段海洋pCO_2和海气CO_2通量的变化

• 发表时间: 2009
• 期刊: Geophysical Research Letters 36
• 作者: S.Nakaoka;H.Yoshikawa;et al.
• 通讯作者: et al.

Ocean Acidification States in the Indian Sector of the Southern Ocean relating to the secular trend and seasonal variation of Oceanic Carbon Dioxide.

南大洋印度区的海洋酸化状态与海洋二氧化碳的长期趋势和季节变化有关。

• 发表时间: 2010
• 作者: Hashida G.;Nakazawa T.;Aoki S.;Nakaoka S.;Inoue H.Y.;Yamanouchi T.;Odate T.;Fukuchi M.
• 通讯作者: Fukuchi M.

Temporal variation of ^<13>C/^<12>C and concentration of DIC in the western North Pacific Subtropical Gyre

北太平洋副热带环流^<13>C/^<12>C的时间变化和DIC浓度

• 发表时间: 2009
• 作者: Takamura;Tomomi
• 通讯作者: Tomomi

Decreasing trend of pH estimated from the time series of carbonate parameters observed in the western North Pacific for a quarter century

根据 25 年来在北太平洋西部观测到的碳酸盐参数时间序列估算出的 pH 值下降趋势

• 发表时间: 2010
• 期刊: Tellus
• 作者: Midorikawa;T.;Yoshikawa;H.;et al
• 通讯作者: et al