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Kopenhagen 2-3 Mai 2005 | Folie 1. Kopenhagen 2-3 Mai 2005 | Folie 2 Austrian Inventory of Greenhouse Gas Emissions from Waste.

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Presentation on theme: "Kopenhagen 2-3 Mai 2005 | Folie 1. Kopenhagen 2-3 Mai 2005 | Folie 2 Austrian Inventory of Greenhouse Gas Emissions from Waste."— Presentation transcript:

1 Kopenhagen 2-3 Mai 2005 | Folie 1

2 Kopenhagen 2-3 Mai 2005 | Folie 2 Austrian Inventory of Greenhouse Gas Emissions from Waste

3 Kopenhagen 2-3 Mai 2005 | Folie 3 Institutions and Responsibilities The Austrian Emission Inventory and all reporting obligations are supported by the Umweltbundesamt By law: environmental control act 1998

4 Kopenhagen 2-3 Mai 2005 | Folie 4 Institutions and Responsibilities Excerpt from the Austrian Environmental Control Act Purpose and Tasks of the Federal Environment Agency are among others: To establish the technical expertise for compliance with the United Nations Framework Convention on Climate Change To develop and keep inventories, balances, registers, and environmental information systems to document the state and development of the environment

5 Kopenhagen 2-3 Mai 2005 | Folie 5 Relevance of CRF Sector 6 Waste GHGBY2003Trend BY BY2003 Emissions [Gg CO 2 e]Share [%] Total %100% 1 Energy %70% 76% 2 Industry %12.9% 12% 3 Solvent %0.7% 0% 4 Agriculture %10.7% 8% 5 LUCF %-11%-14% 6 Waste % 5.7% 4%

6 Kopenhagen 2-3 Mai 2005 | Folie 6 Relevance of Source Categories in the CRF Sector 6 Waste Emissions [Gg CO 2 e] 6 A6 B6 C6 D

7 Kopenhagen 2-3 Mai 2005 | Folie 7 Austrian specific Estimation Methods Method 1 Used to estimate emissions from the disposal of Residual Waste Method 2 Used to estimate emissions from the disposal of Non Residual Waste

8 Kopenhagen 2-3 Mai 2005 | Folie 8 Methodology for Emission Calculation of Residual Waste Model of Tabasaran-Rettenberger G t = 1,868*DOC*(0,014*T+0,28)*(1-10 (-kt) ) G t cumulated landfill gas after t years [m 3 /t humid waste] DOCbio-degradable organic carbon content of deposited waste [kgC/t humid waste] Tmean temperature of disposal site [ o C] kdegradation constant tnumber of years DOC kg/t humid waste T30°C k0,035 Calculation period: 31 years

9 Kopenhagen 2-3 Mai 2005 | Folie 9 Sources of Data for the Emission Calculation of Residual Waste Activity data 1998 to 2003 from the Austrian landfill database managed by the Umweltbundesamt Before 1998 from the Austrian waste management plan recalculated (including residual waste from administrative facilities) Landfill gas recovery National study Biodegradable organic carbon National studies Oxidation Factor IPCC default value

10 Kopenhagen 2-3 Mai 2005 | Folie 10 Methodology for Emission Calculation of Non Residual Waste Model of Marticorena M t = M 0 *e -(kt) M t landfill gas formation potential at time t [m 3 /t humid waste] M 0 landfill gas formation potential [m 3 /t humid waste] k degradation constant k = -ln (0.5) / t 1/2 t 1/2 mean half life of readily or slowly degradable waste respectively t number of years Readily degradable waste: half life 1-20 years Slowly degradable waste half life years Calculation period: 100 years

11 Kopenhagen 2-3 Mai 2005 | Folie 11 Sources of Data for the Emission Calculation of Non Residual Waste Activity data 1998 to 2003 from the Austrian landfill database managed by the Umweltbundesamt Before 1998 no data available Organic carbon content National studies Half life National studies

12 Kopenhagen 2-3 Mai 2005 | Folie 12 Methodology for Emission Calculation of Compost Production: Emission factors CH 4 [kg/t humid matter] N 2 O [kg/t humid matter] Mechanical biological treated residual waste Bio-waste, loppings, home composting Sewage Sludge

13 Kopenhagen 2-3 Mai 2005 | Folie 13 Sources of Data for the Emission Calculation of Compost production Activity data The activity data were taken from several national studies. For years where no data were available they were inter-/extrapolated or the value of the year before was used respectively. Emission factors National studies

14 Kopenhagen 2-3 Mai 2005 | Folie 14 Which Issues were raised during the UNFCCC Review Process? (1) 6.B Waste-water Handling: Information gaps / the methodology used for CH4 emissions from domestic and industrial waste water, is not in line with the IPCC good practice guidance plan to revise the national methodology for the 2006 submission 6 D Other Waste Compost production should be reported under 6 A Solid waste disposal on land. Will be included until submission 06

15 Kopenhagen 2-3 Mai 2005 | Folie 15 Which Issues were raised during the UNFCCC Review Process? (2) 6 A 1 Managed Waste Disposal on Land Austria used an methane oxidation factor of 0.2 In this submission because recommended by the ERT (Expert Review team) the IPCC default value was used the composition of wastes reported in the CRF is constant through the years. = lack of data for the next submission efforts will be made to update the data

16 Kopenhagen 2-3 Mai 2005 | Folie 16 Which Issues were raised during the UNFCCC Review Process? (3) 6 A 1 Managed Waste Disposal on Land (continued) it would be more appropriate to use extrapolation techniques for those years where no data are available (i.e. non-residual wastes before 1998), instead of considering it as constant Efforts to improve the time series of non- residual waste will be made for the next submission

17 Kopenhagen 2-3 Mai 2005 | Folie 17 Uncertainties in the waste sector 6 A 1 Managed Waste Disposal on Land Expert judgement National Study estimated uncertainty of data of submission 2000: 35% emission factors / 25% activity data Since then method continually improved uncertainty of data of submission 2004: 30% emission factors / 15% activity data

18 Kopenhagen 2-3 Mai 2005 | Folie 18 Improvements in Sector 6 A 1 ImprovementsSubmission 2000 Submission 2004 activity datanational studies landfill database landfillgas recovery estimationsurvey DOCnational study 1999 national study 2004

19 Kopenhagen 2-3 Mai 2005 | Folie 19 QA/QC procedures Involvement of national experts Comparison of national methodology with IPCC methodology

20 Kopenhagen 2-3 Mai 2005 | Folie 20 Final Slide Thank you for your attention!


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