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Comprehensive Guide to Greenhouse Gas Inventories

This guide contains new scientific and technical knowledge on sources of greenhouse gases, including F-gases, non-energy product uses of fossil fuels, harvested wood products, wetlands gases, and more. It covers methodologies for estimating parameters and accounting approaches, as well as handling of precursors like SO2 and NOx. Recommendations on indirect emissions and leakage estimates are provided.

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Comprehensive Guide to Greenhouse Gas Inventories

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  1. IPCC 2006 Guidelines for National Greenhouse Gas Inventories Simon Eggleston Technical Support Unit

  2. New scientific and technical knowledge included. • Since 1996 we have a better understanding of sources • F gases • Non-Energy Product Uses of Fossil Fuels • All Defaults & Emission Factors Reviewed • Carbon Capture and Storage • Harvested Wood Products • Wetlands

  3. Gases included • Carbon Dioxide CO2 • Methane CH4 • Nitrous Oxide N2O • Hydroflurocarbons HFC • Perflurocarbons PFC • Sulphur Hexaflouride SF6 • Nitrogen Trifluoride NF3 • Trifluoromethyl Sulphur Pentafluoride SF5CF3 • Ethers and Halogenated Ethers (e.g., HFE-7200, H-Galden 1040x, HG-10, HG-01)

  4. New Sources • Carbon Capture and Storage • Closed Coal Mines • Lead and zinc production, • Titanium dioxide production, • Various sources of SF6 (Accelerators, etc), • Liquid crystal display (LCD) manufacturing • Settlements

  5. Emissions from Carbon capture and storage • Carbon captured subtracted from source emissions • Captured CO2 should be metered and subtracted from emission. • Emissions from leakage where they occur (pipelines, transport, storage and injection) • Estimated based on industrial experience • Estimates of leakage from geological storage sites. • Based on site investigation, models and measurements

  6. Harvested Wood Products (HWP) • UNFCCC has not decided accounting approach • So IPCC cannot prefer one “accounting” approach over another • HOWEVER – underlying each accounting approach are some parameters that can be estimated • Methodologies to estimate these parameters are given • How these parameters are combined to form all accounting methods is given • Default methodology for estimating all these parameters – based on FAO data with default variables is suitable for all counties – country specific data will improve estimates

  7. Direct & Indirect CO2

  8. Biogenic

  9. Handling of precursors clarified (SO2, NOx, CO and NMVOC) • Will not give guidance for the indirect greenhouse gases • Will refer to other existing guidance • EMEP/CORINAIR Guidebook • May need to use these for some indirect emissions • Only estimate these if inventories already exist

  10. Indirect N2O

  11. Work Plan

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