TOWARDS ROBUST METHANE EMISSIONS ESTIMATES FOR PETROLEUM AND NATURAL GAS SYSTEMS IN THE NATIONAL GREENHOUSE GAS EMISSIONS INVENTORY

摘要

The petroleum and natural gas industry sector is very dynamic and has undergone substantial changes in the past decade. These changes require updated methodologies for estimating GHG emissions for the petroleum and natural gas sectors in the GHGI. With the inception of reporting by this sector in 2011, a wealth of data is becoming available for extensive updates of the methodology together with data from several studies nationwide. The evolution of these updated inventories may be somewhat confusing due to frequent changes to activity and emission factors as more data becomes available and is properly vetted for inclusion in the GHGI. Updated inventories are more robust and lead to a better understanding of emission trends and to a better understanding of the contribution of the industry to national GHG emissions - especially for methane.