Table 5.
Aviation emissions of CO2 (annual and cumulative) for 2005, 2020 and 2050 from IEA data and projections made in this work as Tg CO2 yr−1. The nomenclature ‘A1’ and ‘B2’ for 2050 scenarios refers to consistency with two of the IPCC SRES GDP projections and ‘t1’ and ‘t2’refers to two levels of NOx technology as described by IPCC (1999).
| Year/scenario | Fuel (Tg yr−1) | CO2 emission (Tg CO2 yr−1) | CO2 cumulative emission since 1940 (Pg CO2) |
|---|---|---|---|
| 2005 | 232.4 | 733 | 21.3 |
| 2020 | 336.0 | 1060 | 34.6 |
| 2050 A1t1 | 816.0 | 2573 | 86.9 |
| 2050 A1t2 | 844.9 | 2665 | 88.2 |
| 2050 B2t1 | 568.8 | 1794 | 76.5 |
| 2050 B2t2 | 588.9 | 1857 | 77.7 |