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In oceanic biogeochemistry, the solubility pump is a physico-chemical process that transports carbon (as dissolved inorganic carbon) from the ocean's surface to its interior. ==Overview== The solubility pump is driven by the coincidence of two processes in the ocean : * The solubility of carbon dioxide is a strong inverse function of seawater temperature (i.e. solubility is greater in cooler water) * The thermohaline circulation is driven by the formation of deep water at high latitudes where seawater is usually cooler and denser Since deep water (that is, seawater in the ocean's interior) is formed under the same surface conditions that promote carbon dioxide solubility, it contains a higher concentration of dissolved inorganic carbon than might be expected from average surface concentrations. Consequently, these two processes act together to pump carbon from the atmosphere into the ocean's interior. One consequence of this is that when deep water upwells in warmer, equatorial latitudes, it strongly outgasses carbon dioxide to the atmosphere because of the reduced solubility of the gas. The solubility pump has a biological counterpart known as the biological pump. For an overview of both pumps, see Raven & Falkowski (1999).〔Raven, J. A. and P. G. Falkowski (1999). (Oceanic sinks for atmospheric CO2. ) ''Plant Cell Environ.'' 22, 741-755.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Solubility pump」の詳細全文を読む スポンサード リンク
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