Depth, radiocarbon, and the effectiveness of direct CO2 injection as an ocean carbon sequestration strategy

Details Depth, radiocarbon, and the effectiveness of direct CO2 injection as an ocean carbon sequestration strategy Depth, radiocarbon, and the effectiveness of direct CO2 injection as an ocean carbon sequestration strategy

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29p..13c&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 16, pp. 13-1, CiteID 1766, DOI 10.1029/2001GL014234

Mathematics

Logic

1

Oceanography: General: Numerical Modeling, Oceanography: General: Ocean Prediction, Oceanography: Biological And Chemical: Carbon Cycling, Global Change: Oceans (4203)

Scientific paper

If radiocarbon were a good predictor of the amount of time until a water parcel returns to the surface, it could be used to estimate the effectiveness of carbon sequestration by direct injection. We performed direct CO2 injection simulations in both one-dimensional box-diffusion and three-dimensional ocean general circulation models. The 1-D model results for ocean carbon retention accord with the 3-D model results, especially in the Pacific basin and at shallower depths. In the 1-D model, carbon retention in the ocean is directly related to both the injection depth and the Δ14C of carbon at the injection location. However, in the 3-D model, depth, but not radiocarbon, provides a relatively good prediction of carbon retention. This suggests that the expected time for a water parcel to return to the surface is closely related to its depth and not in general to the time since last at the surface.

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