1. Workshop on Emissions of Greenhouse Gases from Aviation and Navigation
8 April, 2019
Workshop on Emissions of Greenhouse Gases from Aviation and Navigation
Paul Duffy
8 April, 2019

2. National Institutions
Environmental Protection Agency (EPA)
National emission inventory agency
Oil Division, Department of Communications, Marine and Natural Resources (DCMNR)
Responsible for Oil Balance data
Legal Basis: European Communities (Minimum stocks of Petroleum Oils) (Amendment) Regulations, 2001 (SI No. 65 of 2001)
Sustainable Energy Ireland (SEI)
Responsible for National Energy Balance
Aer Rianta
Statutory body responsible for the operation, management and development of Dublin, Shannon and Cork Airports
Provides aircraft movement statistics
8 April, 2019

3. Oil Balance 2002
8 April, 2019

4. Total Final Consumption 2002
8 April, 2019

5. Emissions from Navigation 1.A.3 Transport (d) Navigation
no Domestic marine transport in Ireland, only leisure craft activities
emissions are calculated using a Tier 1 methodology
emission factors for CO2 are country specific
emission factors for CH4 and N2O are from EMEP/CORINAIR Atmospheric emission inventory guidebook (B810)
CO2 emissions from Navigation account for 0.09% of total emissions in 2002
8 April, 2019

6. Emissions from Marine Bunkers (Memo items)
activity data (fuel statistics) taken from Oil Balance
emission factors for CO2 are country specific
emissions of CH4 and N20 are not estimated “NE”
8 April, 2019

7. Emissions from Civil Aviation 1.A.3 Transport (a) Civil Aviation
emissions from Domestic LTO-cycles (SNAP )
emissions from Domestic cruise (SNAP )
CO2 emissions from Civil Aviation account for 0.15% of total emissions in 2002
8 April, 2019

8. Emissions from International Aviation Aviation Bunkers (Memo items)
emissions from International LTO-cycles (SNAP )
emissions from International cruise (SNAP )
8 April, 2019

9. Methodology used for Aviation emissions
IPCC Tier 2a method, based on the number of LTO cycles and fuel use
Fuel Consumption factors for LTO & Cruise are from EMEP/CORINAIR Atmospheric emission inventory guidebook (B851)
Fuel Consumption factors are weighted based on aircraft movement statistics from Aer Rianta
An average cruise distance of 125nm is used for Domestic flights
Emission factors for CH4 and N2O are from Table 8.2 (B851)
8 April, 2019

10. Methodology cont’d
Based on Tier 2 equations in IPCC Good Practice Guidance
Emissions = LTO Emisssions + Cruise Emissions
LTO Emissions = Number of LTOs * Emission FactorLTO
LTO Fuel Consumption = Number of LTOs * Fuel Consumption per LTO
Cruise Emissions = (Total Fuel Consumption – LTO Fuel Consumption) * Emission FactorCRUISE
8 April, 2019

11. Methodology cont’d Fuel consumption calculations
8 April, 2019
Methodology cont’d
Fuel consumption calculations
Domestic LTO (A)
Domestic cruise (125nm) (B)
International LTO (C)
International cruise = Total fuel – (A + B + C) (D)
Emissions calculations
Fuel amounts A, B, C & D * CO2 Emission factor for Jet Kerosene
Emissions from A & B are reported in 1.A.3 (a) Civil Aviation
Emissions from C & D are reported in Aviation Bunkers
8 April, 2019