@article{TEXTUAL,
      recid = {13748},
      author = {Cao, L. and Eby, M. and Ridgwell, A. and Caldeira, K. and  Archer, D. and Ishida, A. and Joos, F. and Matsumoto, K.  and Mikolajewicz, U. and Mouchet, A. and Orr, J. C. and  Plattner, G.-K. and Schlitzer, R. and Tokos, K. and  Totterdell, I. and Tschumi, T. and Yamanaka, Y. and Yool,  A.},
      title = {The role of ocean transport in the uptake of anthropogenic  CO<sub>2</sub>},
      journal = {Biogeosciences},
      address = {2009-03-16},
      number = {TEXTUAL},
      abstract = {We compare modeled oceanic carbon uptake in response to  pulse CO<sub>2</sub> emissions using a suite of global  ocean models and Earth system models. In response to a  CO<sub>2</sub> pulse emission of 590 Pg C (corresponding to  an instantaneous doubling of atmospheric CO<sub>2</sub>  from 278 to 556 ppm), the fraction of CO<sub>2</sub>  emitted that is absorbed by the ocean is: 37±8%, 56±10%,  and 81±4% (model mean ±2σ ) in year 30, 100, and 1000 after  the emission pulse, respectively. Modeled oceanic uptake of  pulse CO<sub>2</sub> on timescales from decades to about a  century is strongly correlated with simulated present-day  uptake of chlorofluorocarbons (CFCs) and CO<sub>2</sub>  across all models, while the amount of pulse CO<sub>2</sub>  absorbed by the ocean from a century to a millennium is  strongly correlated with modeled radiocarbon in the deep  Southern and Pacific Ocean. However, restricting the  analysis to models that are capable of reproducing  observations within uncertainty, the correlation is  generally much weaker. The rates of surface-to-deep ocean  transport are determined for individual models from the  instantaneous doubling CO<sub>2</sub> simulations, and they  are used to calculate oceanic CO<sub>2</sub> uptake in  response to pulse CO<sub>2</sub> emissions of different  sizes pulses of 1000 and 5000 Pg C. These results are  compared with simulated oceanic uptake of CO<sub>2</sub> by  a number of models simulations with the coupling of  climate-ocean carbon cycle and without it. This comparison  demonstrates that the impact of different ocean transport  rates across models on oceanic uptake of anthropogenic  CO<sub>2</sub> is of similar magnitude as that of  climate-carbon cycle feedbacks in a single model,  emphasizing the important role of ocean transport in the  uptake of anthropogenic CO<sub>2</sub>.},
      url = {http://knowledge.uchicago.edu/record/13748},
}