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

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

Oil Balance 2002 8 April, 2019

Total Final Consumption 2002 8 April, 2019

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

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

Emissions from Civil Aviation 1.A.3 Transport (a) Civil Aviation emissions from Domestic LTO-cycles (SNAP 080501) emissions from Domestic cruise (SNAP 080503) CO2 emissions from Civil Aviation account for 0.15% of total emissions in 2002 8 April, 2019

Emissions from International Aviation Aviation Bunkers (Memo items) emissions from International LTO-cycles (SNAP 080502) emissions from International cruise (SNAP 080504) 8 April, 2019

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

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

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