Comment on "Saturation of the Southern Ocean CO 2 Sink Due to Recent Climate Change"

Author:

Law Rachel M.12,Matear Richard J.12,Francey Roger J.12

Affiliation:

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.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference14 articles.

1. Saturation of the Southern Ocean CO 2 Sink Due to Recent Climate Change

2. TransCom 3 inversion intercomparison: Impact of transport model errors on the interannual variability of regional CO2fluxes, 1988-2003

3. We solve for 116 regions globally 6 of which make up the Southern Ocean region using monthly mean CO 2 mixing ratio measurements.

4. GLOBALVIEW-CO 2 Cooperative Atmospheric Data Integration Project–Carbon Dioxide CD-ROM NOAA GMD Boulder CO (2006). [Also available on Internet via anonymous FTP to ftp.cmdl.noaa.gov Path: ccg/co2/GLOBALVIEW.]

5. Trends: A Compendium of Data on Global Change 2005

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