Reporting of bunkers in Austria Systems, experience and difficulties Agnes Kurzweil

National procedures Key institution: Federal Ministry of Agriculture, Forestry, Environment and Watermanagement Umweltbundesamt (National Environment Agency), Vienna

National procedures Method: According to CORINAIR „best practice“ KALIVODA M., KUDRNA M.: Report on Air Traffic Emission Calculation in Austria 1990 – 2000 Calibration by fuel sold Extrapolation for the years 2001 and 2002 (by fuel used and movements) Simple/very simple methodology for CH4 and N2O

National procedures Source-Data Movement Data: ATC-Data of Austrocontrol for 1995, 1998 and 2000 Fuel Consumption: Fachverband der Mineralölindustrie Statistic Austria (Energy Statistic)

Calibration by fuel Difference fuel calculatded – sold: kerosene price Mixed calc. UNECE For each airport Different quality of data Therefore different methods (simple/detailed)

Example CO2

domestic - international Domestic: between Austrian airports International: abroad <> Austria Seperation by movement-data of Austro Control Fuel data: no differentiation

Lessons learnded Difference between methodologies up to 700% (LTO) Problems with source-data: No consistency between the data sets (fuel, movements) Different grade of quality of data from airports Improvement of data needed: Numbers of flights per destination and Aircraft

Outlook Retain a detailed level Update within the next years

Thank you for your attention! Agnes Kurzweil Umweltbundesamt Vienna