Abstract

The increasing of the CO2 concentration in the atmosphere might be induced by consumption of fossil fuel and destruction of tropical forests. In the research field of global warming, clarification of the global circulation mechanism of CO2 is one of the important targets. Now, many kinds of option to reduce global warming have been proposed and researched. CO2 sequestration into the ocean is one of hopeful methods from a view point of feasibility. CO2 transfer mechanism between the atmosphere and the ocean in the North Pacific Ocean and the CO2 circulation in the ocean are discussed, which has been surveyed in NOPACCSproject of MITI. Still more, the new method which can dissolve CO2 in shallow sea-water and transport the solution to the deep sea-water is discussed. The method is an utilization of a gas lift effect by CO2 bubbles in the pipeline inverse J shape.

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