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Decrease in the CO2 uptake capacity in an ice-free Arctic Ocean basin
Cai, W.-J.; Chen, L.; Chen, B.; Gao, Z.; Lee, S.H.; Chen, J.; Pierrot, D.; Sullivan, K.F.; Wang, Y.; Hu, X.; Huang, W.-J.; Zhang, Y.; Xu, S.; Murata, A.; Grebmeier, J.M.; Jones, E.P.; Zhang, H. (2010). Decrease in the CO2 uptake capacity in an ice-free Arctic Ocean basin. Science (Wash.) 329(5991): 556-559
In: Science (Washington). American Association for the Advancement of Science: Washington DC. ISSN 0036-8075, more
Peer reviewed article

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Keyword
    Marine

Authors  Top 
  • Cai, W.-J.
  • Chen, L.
  • Chen, B.
  • Gao, Z.
  • Lee, S.H.
  • Chen, J.
  • Pierrot, D.
  • Sullivan, K.F.
  • Wang, Y.
  • Hu, X.
  • Huang, W.-J.
  • Zhang, Y.
  • Xu, S.
  • Murata, A.
  • Grebmeier, J.M.
  • Jones, E.P.
  • Zhang, H., more

Abstract
    It has been predicted that the Arctic Ocean will sequester much greater amounts of carbon dioxide (CO2) from the atmosphere as a result of sea ice melt and increasing primary productivity. However, this prediction was made on the basis of observations from either highly productive ocean margins or ice-covered basins before the recent major ice retreat. We report here a high-resolution survey of sea-surface CO2 concentration across the Canada Basin, showing a great increase relative to earlier observations. Rapid CO2 invasion from the atmosphere and low biological CO2 drawdown are the main causes for the higher CO2, which also acts as a barrier to further CO2 invasion. Contrary to the current view, we predict that the Arctic Ocean basin will not become a large atmospheric CO2 sink under ice-free conditions.

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