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

Last updated on 14 Mar 2018 08:43 (cf. Authors)

Short description

NFR-Code Name of Category Method AD EF Key Category for 1
1.A.3.a i (ii) International Civil Aviation: Cruise T1, T2, T3 NS, M CS, D, M not included in key category analysis

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.

Method

Actitvity Data

Specific jet kerosene consumption during cruise-stage is calculated within TREMOD AV as described above.

Table 1: annual jet kerosene consumption during cruise-stage, in terajoules
1990 1995 2000 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
148,763 181,458 237,547 283,279 298,525 309,590 312,344 303,947 297,582 279,989 306,791 314,460 300,743 298,115 323,838

Emission factors

All country specific emission factors used for emission reporting were basically ascertained within UBA project FKZ 360 16 029 [2] and have since then been compiled, revised and maintained in TREMOD AV [1].

For more details, see superordinate chapter on 1.A.3.a - Civil Aviation.

Table 2: Annual country-specific emission factors, in kg/TJ
1990 1995 2000 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
NH3 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00
NMVOC 8.13 5.86 4.62 3.98 3.98 3.92 3.90 3.90 3.82 3.62 3.49 3.45 3.53 3.58 3.63
NOx 360 346 336 343 344 347 349 354 362 364 372 379 383 388 390
SOx 25.1 15.2 8.46 6.34 5.92 5.50 5.07 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65
PM 1 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65 4.65
BC 2 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23 2.23
CO 49.2 43.4 39.0 33.7 33.6 33.3 32.6 32.6 32.2 31.8 31.4 31.0 30.5 30.6 30.5

1 EF(TSP) also applied for PM10 and PM2.5 (assumption: > 99% of TSP consists of PM2.5)
2 estimated via a f-BC of 0.48 as provided in [3], Chapter: 1.A.3.a, 1.A.5.b Aviation, page 49: "Conclusion".

Trend discussion for Key Sources

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.

Recalculations

Activity data:

As mentioned in the superordinate chapter on 1.A.3.a, the percentual shares of kerosene consumed during L/TO were revised for 2014 and 2015 within TREMOD AV.
In addition, the percentual shares of kerosene consumed during L/TO were revised for 2014 and 2015.

Hence, the amount of kerosene allocated to sub-category 1.A.3.a i (ii) had to be revised accordingly:

Table 3: Revised 2014 & 2015 kerosene usage in 1.A.3.a i (ii), in terajoules
2014 2015
Submission 2018 300,743 298,115
Submission 2017 300,871 300,674
absolute change -128 -2,559
relative change -0.04% -0.85%

Emission factors:

Several country-specific EF values for have been revised within TREMOD AV for 2014 and 2015:

Table 4: Revised 2014 & 2015 emission-factor values, in [kg/TJ]
2014 2015
Non-methane volatile organic compounds - NMVOC
Submission 2018 3.535 3.582
Submission 2017 3.537 3.537
absolute change -0.002 0.045
relative change -0.05% 1.28%
Nitrogen oxides - NOx
Submission 2018 383.11 387.81
Submission 2017 383.19 383.19
absolute change -0.08 4.62
relative change -0.02% 1.21%
Carbon monoxide - CO
Submission 2018 30.50 30.61
Submission 2017 30.51 30.51
absolute change -0.01 0.10
relative change -0.03% 0.33%

For specific information on recalculated emssion estimates reported for Base Year and 2015, please see the pollutant specific recalculation tables following chapter 8.1 - Recalculations.

Uncertainties

For uncertainties information, see main chapter 1.A.3.a - Civil Aviation.

Planned improvements

For information on planned improvements, see main chapter 1.A.3.a - Civil Aviation.


Bibliography
1. Ifeu & Öko-Institut, 2017: TREMOD AV 2017
2. Ifeu & Öko-Institut, 2010: Implementierung eines eigenständigen Moduls zur Berechnung des Flugverkehrs in das bestehende TREMOD-System, vorläufiger Endbericht zum F+E-Vorhaben 360 16 029, Berlin & Heidelberg, November 2010; URL: http://webdev3/websites/I2-6/projekte/Endberichte%20%20Dokumente/FKZ%20360%2016%20029%20(Implementierung%20des%20Flugverkehrs%20in%20TREMOD)/03_Endbericht_(Draft).pdf
3. EMEP/EEA, 2016: EMEP/EEA air pollutant emission inventory guidebook 2016 - Copenhagen, 2016
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