The surface ocean and atmosphere exchange CO2 freely. So as long as the electricity input is carbon neutral, the process is carbon neutral. i.e. it doesn't mat

The surface ocean and atmosphere exchange CO2 freely. So as long as the electricity input is carbon neutral, the process is carbon neutral. i.e. it doesn't matter if you take CO2 out of the surface ocean or the atmosphere. Both will reduce the concentration of CO2 in the atmosphere. http://en.wikipedia.org/wiki/Carbon_cycle http://en.wikipedia.org/wiki/Carbon_cycle