Climate Change 2001:
Working Group I: The Scientific Basis
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Figure 3.9: Anthropogenic CO2 in the Atlantic Ocean (mmol/kg): comparison of data and models. The top left panel shows the sampling transect; the top right panel shows estimates of anthropogenic CO2 content along this transect using observations from several cruises between 1981 and 1989 (Gruber, 1998). Anthropogenic CO2 is not measured directly but is separated from the large background of oceanic carbon by an indirect method based on observations (Gruber et al., 1996). The remaining panels show simulations of anthropogenic CO2 content made with four ocean carbon models forced by the same atmospheric CO2 concentration history (Orr et al., 2000).

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