1. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP 2006 IPCC Guidelines - Overview Jim Penman Steering Group Member (UK Defra)

2. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Origins  OECD initiation (1992) => IPPC 1995 guidelines, updated 1996  1996 Guidelines adopted at COP3  Supplemented by GPG in 2000 and 2003  System adapted to actual needs - very widely used  Basis for 2006 Guidelines requested by SBSTA17.

3. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Structure of 2006 Guidelines Aims:  Rationalise structure by reducing number of volumes needed for cross referencing  Promote consistency between sectors  Resulting structure agreed at IPCC 21 (Vienna 2003):

4. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Volume structure Overview  Overview  Vol 1 - General Guidance and Reporting  Vol 2 - Energy  Vol 3 - Industrial Processes and Product Use  Vol 4 - Agriculture, Forestry and Other Land use  Vol 5 - Waste

5. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Approach  Evolution – users recognise familiar methods.  As with GPG basic principles for 2006 GL remain: 1) estimates neither under nor overestimates so far as can be judged 2) uncertainties reduced as far as practicable  Hence efficient use of resources

6. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Coverage As in IPCC 96 Guidelines, plus notably:  All GHG with available GWP values  Additional gases that could be used as substitutes for which GWPs not yet calculated  Carbon dioxide capture and storage  Methane from abandoned mines.

7. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Other developments  General guidance more prominent and new simple introduction to inventories introduced  Managed land a proxy for anthropogenic  Actual annual estimates  Direct emissions estimation introduced  Relationship between carbon pools clarified  Consistent approach to indirect N, not just agricultural sources  Could be relevant at project level

8. INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE NATIONAL GREENHOUSE GAS INVENTORIES PROGRAMME WMO UNEP Policy Relevance  2006 Guidelines are IPCC’s best, most internally consistent assessment of inventory science  They are an evolutionary development from the 96 Guidelines plus GPG and (personal view) could be used in a manner consistent with the existing Guidance  Timing of adoption clearly a matter for Parties