Estimate of uptake CO2 near the Kerguelen Plateau, Sothern Ocean by the high frequency observation

2014 Fiscal Year Final Research Report

• Project/Area Number: 23241014
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: WATANABE Shuichi 独立行政法人海洋研究開発機構, むつ研究所, 研究所長 (00167131)
• Co-Investigator(Kenkyū-buntansha): NAKNO Yoshiyuki 独立行政法人海洋研究開発機構, 海洋工学センター, 技術研究員 (20566103) ; WAKITA Masahide 独立行政法人海洋研究開発機構, むつ研究所, 技術研究員 (30415989)
• Co-Investigator(Renkei-kenkyūsha): IIDA Takahiro 国立極地研究所, 研究教育系, 助教 (90455189)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 二酸化炭素 / 地球温暖化 / 海洋酸性化 / 南極海 / 二酸化炭素分圧測定 / 現場高頻度観測 / 漂流ブイ

Outline of Final Research Achievements

Lenton, Matear and Tilbrook (2006) suggested sampling regularly every 3 months, at every 30 degree in longitude and 3 degree in latitude in the Southern Ocean is sufficient to determine the net Southern Ocean CO2 uptake which uncertainty has less than 0.1PgC/yr. The in-site pCO2 autonomous measuring buoys were made and deployed in the Southern Ocean to verify the suggestion of Lenton et al. The results from the buoys were not sufficient for analysis, but rapid change of pCO2 was not observed. This results were supported that suggestion. Previous study near the Kerguelen Plateau was indicated that pCO2 was quickly increasing towards the outside of the Kerguelen Plateau. However, it would be smaller as to affect the CO2 uptake. The buoys attached no drogue strongly affected with wind and were moved faster than expected.

Free Research Field

化学海洋学