1. Combustion & Industry, Transport, Agriculture & Nature Panels Expert Panels Panels are ad hoc. Currently three ‘sector’ panels: –Combustion and Industry. –Transport. –Agriculture and Nature. Main job – Emission Inventory Guidebook.

2. Combustion & Industry, Transport, Agriculture & Nature Panels Guidebook - trends Additional emissions in LRTP –More complex Guidebook. Increased overlap with IPCC. –Harmonisation Pressure for more detailed inventories. –Increased need for guidance. Current Guidebook is useful (III stage review) –Improvements can be made.

3. Combustion & Industry, Transport, Agriculture & Nature Panels Expert Panel view Science: –Fill gaps. –Update methods. –Update some emission factors. –Harmonise with IPCC. –Projections. Format: –Improve readability. –Emission factor database?

4. Combustion & Industry, Transport, Agriculture & Nature Panels Science Harmonise with IPCC. –IPCC sometimes inadequate for LRTP. Tier 2/3 methods and emission factors should be main focus. –Key source emissions require Tier 2. –Tier 2 emission factors used in calculation of Tier 1 emission factors. Fill (relatively few) gaps.

5. Combustion & Industry, Transport, Agriculture & Nature Panels Format Introduction Step-by-step guidance for Tier 1 and 2. Methodological guidance. –How to estimate Tier 2 emission factors. –How to develop Tier 3 methods and emission factors. Scientific documentation of default emission factors and methods.

6. Combustion & Industry, Transport, Agriculture & Nature Panels Emission factor database Advantages of emission factor database: –Easier to update tables of emission factors. –Identification of gaps. –Easier error checking. Disadvantages: –Database needs restructuring when method changes. –Requires technical competence or user interface.

7. Combustion & Industry, Transport, Agriculture & Nature Panels Emission factor database Useful for storing Tier 1 and 2 emission factors. Essential that description of methodologies, activity data and emission factors are kept together. –as in IPCC Guidelines. Simple system is adequate.

8. Combustion & Industry, Transport, Agriculture & Nature Panels Future of Expert Panels 1.Expert Panels edit the sector chapters of Guidebook (‘business as usual’). 2.Revise Expert Panel procedures to reflect increased demands & resources (‘business nearly as usual’). 3.Contract out Guidebook editing (‘abolish sector Expert Panels’).