The Role of Direct Air Capture and Negative Emissions Technologies...

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Carbon Capture Center
October 8, 2021

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Here, we use the Global Change Analysis Model (GCAM) to understand the role of DACCS across all 5 SSPs for the below 2˚C and below 1.5˚C end-of-century warming goals. We assess DACCS deployment relative to other carbon capture methods, and its side effects for global energy, water, land systems. We find that DACCS could play a 10-40 Gt-CO2-yr-1 role in many of these scenarios, particularly those with delayed climate policy and or higher challenges to emissions mitigation. Our "sustainable development" scenarios, consistent with SSP1, have far smaller deployments of DACCS and other negative emissions owing to immediate climate policy onset, greater ease of "conventional mitigation" and tighter constraints on future negative emissions.

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