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Science 1 February 2008:
Vol. 319. no. 5863, p. 570
DOI: 10.1126/science.1149077
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Technical Comments

Comment on "Saturation of the Southern Ocean CO2 Sink Due to Recent Climate Change"

Rachel M. Law,1* Richard J. Matear,2 Roger J. Francey1

Unlike Le Quéré et al. (Reports, 22 June 2007, p. 1735), we do not find a saturating Southern Ocean carbon sink due to recent climate change. In our ocean model, observed wind forcing causes reduced carbon uptake, but heat and freshwater flux forcing cause increased uptake. Our inversions of atmospheric carbon dioxide show that the Southern Ocean sink trend is dependent on network choice.

1 Wealth from Oceans Flagship, Commonwealth Scientific and Industrial Research Organisation (CSIRO), PMB 1, Aspendale, Victoria 3195, Australia.
2 Wealth from Oceans Flagship, CSIRO, GPO Box 1538, Hobart, Tasmania 7001, Australia.

* To whom correspondence should be addressed. E-mail: rachel.law{at}csiro.au

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Wind-Driven Upwelling in the Southern Ocean and the Deglacial Rise in Atmospheric CO2.
R. F. Anderson, S. Ali, L. I. Bradtmiller, S. H. H. Nielsen, M. Q. Fleisher, B. E. Anderson, and L. H. Burckle (2009)
Science 323, 1443-1448
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