Indirect ocean capture of atmospheric CO2: Part II. Understanding the cost of negative emissions

Negative emissions technologies (NETs), which result in the removal of CO2 from the atmosphere, will be necessary to limit global warming to 2 °C. Unlike point-source CO2 capture, NETs are agnostic to the emission source, and reduce the existing atmospheric CO2 concentration. This enables NETs to address distributed emissions from transportation and past emissions that have led to existing atmospheric CO2 concentrations. Despite their critical …