Table 2 Net CO2 removal compared to published IAM deployment of NETs.

From: Emergency deployment of direct air capture as a response to the climate crisis

 

2030

2050

2075

2100

Cumulative (2025–2100)

This analysis: Median (15–85th percentile) net CO2 removal by DAC, GtCO2

 Unilateral U.S. action

0.05 (0.03–0.07)

2.2 (1.2–3.3)

12.9 (4.7–19.2)

17 (6.4–25.9)

566 (215–832)

 Club of democracies: OECD

0.05 (0.03–0.07)

2.3 (1.2–3.3)

17.3 (6.4–26.2)

23.3 (8.8–35.3)

741 (288–1105)

 Global cooperation

0.05 (0.03–0.07)

2.3 (1.2–3.3)

19.7 (7.3–29.9)

26.8 (10.1–40.6)

839 (328–1254)

By comparison: Median (15–85th percentile) net CO2 removal by NETs in four categories of IAM scenarios, GtCO2

 3 °C likely

0 (0–0.3)

2.9 (0–5.2)

–

10.3 (0.3–12.9)

413 (5–543)

 2 °C medium

0.1 (0–0.6)

3.9 (0.5–7.1)

–

12.1 (7.4–16.8)

464 (222–707)

 2 °C likely

0.2 (0–1)

5.8 (0.6–7.8)

–

12.1 (6.9–17)

537 (227–795)

 1.5 °C

0.6 (0.5–2.1)

5.9 (4.6–14.7)

–

15.4 (9.7–17)

671 (451–999)

  1. IAMs deploy multiple NETs and have explored primarily BECCS to remove CO2; DAC has not been widely assessed. Results are a compilation from IAM databases (AMPERE, LIMITS, RoSE, SSP) and recent studies7,9,59 focused on achieving 1.5 °C. See the Fig. 3 caption (or ref. 17) for definition of 3 °C likely, 2 °C medium, 2 °C likely, and 1.5 °C scenarios; see ref. 17 for assignments of SSP scenarios to these categories.
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