1.A.3.a i (ii) - Internatinal Civil Aviation: Cruise

In NFR category 1.A.3.a i (ii) - Internatinal Civil Aviation: Cruise emissions from international flights from German airports during cruise stage (above 3,000 feet of altitude) are reported.

In the following, information on sub-category specific activity data, (implied) emission factors and emission estimates are provided.

Specific jet kerosene consumption during LTO-stage is calculated within TREMOD AV as described in the superordinate chapter on civil aviation.

Table 1: annual jet kerosene consumption during cruise-stage, in terajoules

source: Knörr et al. (2022c) ¹⁾ and Gores (2022) ²⁾

All country specific emission factors used for emission reporting were basically ascertained within UBA project FKZ 360 16 029 ³⁾ and have since then been compiled, revised and maintained in TREMOD AV ⁴⁾.

For more information, please see the superordinate chapter on civil aviation.

Table 2: Annual country-specific emission factors, in kg/TJ

¹ EF(TSP) also applied for PM₁₀ and PM_2.5 (assumption: > 99% of TSP consists of PM_2.5)
² estimated via a f-BC of 0.48 as provided in ⁵⁾, Chapter: 1.A.3.a, 1.A.5.b Aviation, page 49: “Conclusion”.

NFR 1.A.3.a i (ii) - International Civil Aviation - Cruise is not included in the national emission totals and hence not included in the key category analysis.

Activity data have been revised within TREMOD AV to keep in line with information the final 2020 NEB.

Furthermore, the shares of kerosene consumed for domestic and international flights have been corrected for all years within the TREMOD Aviation model (see super-ordinate chapter).

Table 3: Revised kerosene usage in 1.A.3.a i (ii), in terajoules