Siegenthaler, U., and J. L. Sarmiento, 1993: Atmospheric carbon dioxide and the ocean. Nature, 365(6442), 119-125.

Abstract: The ocean is a significant sink for anthropogenic carbon dioxide, taking up about a third of the emissions arising from fossil-fuel use and tropical deforestation. Increases in the atmospheric carbon dioxide concentration account for most of the remaining emissions, but there still appears to be a 'missing sink' which may be located in the terrestrial biosphere. Atmospheric CO₂ measurements made from ice cores recovered ar Siple and Amundsen-Scott Stations were used in the preparation of this review.