East Anglia Study Shows Dramatic Drop In N. Atlantic's Carbon Uptake (50%) Since 1990s - AFP

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A paper in the Journal of Geophysical Research by Dr Ute Schuster and Professor Andrew Watson of UEA's School of Environmental Sciences again raises concerns that the oceans might be slowing their uptake of CO2. Results of their decade-long study in the North Atlantic show that the uptake in this ocean, which is the most intense sink for atmospheric CO2, slowed down dramatically between the mid-nineties and the early 2000s.

A slowdown in the sink in the Southern Ocean had already been inferred, but the change in the North Atlantic is greater and more sudden, and could be responsible for a substantial proportion of the observed weakening.

The observations were made from merchant ships equipped with automatic instruments for measuring carbon dioxide in the water. Much of the data has come from a container ship carrying bananas from the West Indies to the UK, making a round-trip of the Atlantic every month. The MV Santa Maria, chartered by Geest, has generated more than 90,000 measurements of CO2 in the past few years.

The results show that the uptake by the North Atlantic halved between the mid-90s, when data was first gathered, and 2002-05. "Such large changes are a tremendous surprise. We expected that the uptake would change only slowly because of the ocean's great mass," said Dr Schuster.

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http://www.terradaily.com/reports/North_Atlantic_Slows_On_The_Uptake_Of_CO2_999.html

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