Distribution of the partial pressure of CO2 in surface water (pCO2w) between Japan and the Hawaiian Islands: pCO2wSST relationship in the winter and summer

Yoshikawa, Hisayuki; Ishii, Masao; Matsueda, Hidekazu; Kawano, Takeshi; Takasugi, Yoshio

Distribution of the partial pressure of CO2 in surface water (pCO2w) between Japan and the Hawaiian Islands: pCO2wSST relationship in the winter and summer

Yoshikawa, Hisayuki; Ishii, Masao; Matsueda, Hidekazu et al.

Tellus B, 2003, 55(2), 456-465

Permalink : https://hdl.handle.net/2115/630

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アクセス権	open access
URI	https://hdl.handle.net/2115/630
タイトル	Distribution of the partial pressure of CO2 in surface water (pCO2w) between Japan and the Hawaiian Islands: pCO2wSST relationship in the winter and summer
著者	Yoshikawa, Hisayuki ; Ishii, Masao ; Matsueda, Hidekazu ; Kawano, Takeshi ; Takasugi, Yoshio
e-Rad_Researcher 60344496 著者名 Yoshikawa, Hisayuki 吉川, 久幸
著者名 Ishii, Masao
著者名 Matsueda, Hidekazu
著者名 Kawano, Takeshi
著者名 Takasugi, Yoshio
言語	英語
キーワード	Oceanic CO2
	North Pacific Subtropical Gyre
	pCO2
	Seasonal Variation
	Sea Surface Temperature
発行日	2003-04
出版者	Blackwell
収録物名	Tellus B
巻(号)	55(2)
ページ	456-465
抄録	On the basis of measurements of the partial pressure of carbon dioxide in surface seawater (pCO2w) between Japan and the Hawaiian Islands in winter and summer, we examined the relationship between the pCO2w and the sea surface temperature (SST) in the North Pacific Subtropical Gyre (NPSG). In winter, the pCO2w correlated well with the SST (0.14-0.24 %°C-1), suggesting a monotonous change in the carbonate system. However, in summer, five different pCO2w-SST relationships were found in the NPSG including the Kuroshio Extension due to changes in the relative contribution of ocean dynamics (upwelling, vertical mixing, and advection), the biological activity under the absence (very low level) of macro-nutrients, and thermodynamics. The increase in the pCO2w against the unit increase in the SST from January to July was low (<2.5%°C-1) west (leeward side) of the Hawaiian Islands (19-22˚N, 158-168˚W) and in the Kuroshio Extension (33-35ºN, 140-165ºE), and high (~3%°C-1) south of the Kuroshio Extension (25-30°N, 180-165°W) and the Hawaiian Islands (15-19°N, 157-162˚W). This suggested that the drawdown of dissolved inorganic carbon was affected by the enhanced biological activity due to upwelling events associated with eddies and/or the transport of dissolved nutrients from gyre edges to the interior.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Copyright (c) 2003 Blackwell Munksgaad. Published on behalf of the Swedish Geophysical Society
PISSN	0280-6509
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1034/j.1600-0889.2003.01482.x