Experience (20 years) in these fields is derived from the involvement as co-author of the 2006 IPCC Guidelines; co-author of the IPCC SR on CO2 C&S; review editor of the IPCC GPG 2000 and 2003; reviewer of Annex I and non-Annex I GHG Inventories; member of the TF Bureau for the IPCC National GHG Inventories Program and Review Editor of the IPCC EFDB.