Separating the natural and anthropogenic air-sea flux of CO2: The Indian Ocean

Details Separating the natural and anthropogenic air-sea flux of CO2: The Indian Ocean Separating the natural and anthropogenic air-sea flux of CO2: The Indian Ocean

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3123302h&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 23, CiteID L23302

Mathematics

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3

Oceanography: Biological And Chemical: Carbon Cycling, Oceanography: Physical: Upper Ocean Processes, Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes, Oceanography: Biological And Chemical: Chemical Tracers

Scientific paper

We estimate the natural and anthropogenic components of the air-sea flux of CO2 in the Indian Ocean. The increase in atmospheric CO2 driven by human activity has caused the air-sea CO2 disequilibrium, and consequently the flux, to increase significantly over the industrial era. We estimate the flux in the year 1780 to be approximately 0.2 Gt/yr, increasing by 0.26 Gt/yr to 0.5 Gt/yr in 2000. The estimate of the natural (preindustrial) flux is highly sensitive to uncertainties in modern-day CO2 disequilibrium measurements. By contrast, the estimate of the anthropogenic flux is only weakly sensitive to these measurements.

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