16 November 2011: The UNFCCC Secretariat has published national greenhouse gas (GHG) inventory data for the period 1990-2009 (FCCC/SBI/2011/9). By various decisions of the Conference of the Parties (COP), Annex I Parties were requested to submit national inventory data on GHG emissions by sources and removals by sinks by 15 April each year.

The COP adopted guidelines for the technical review of GHG inventories for Annex I Parties and the Secretariat is requested to prepare annually a report on GHG inventory data submitted by Annex I parties for consideration by the COP and the Subsidiary Body for Implementation (SBI).

In 2011, all 42 Annex I Parties submitted their GHG inventory common reporting format (CRF) tables and national inventory reports (NIRs). Over the period 1990–2009, total aggregate GHG emissions excluding emissions/removals from land use, land-use change and forestry (LULUCF) for all Annex I parties decreased by 11.5%, and total GHG emissions/removals including LULUCF decreased by 17.6%. For Annex I Parties with economies in transition (Annex I EIT Parties), GHG emissions excluding and including LULUCF decreased by 41.4% and 54.4%, respectively. For Annex I non-EIT parties, GHG emissions excluding LULUCF increased by 2.1% and GHG emissions including LULUCF increased by 0.6%. Information in the report is based on national GHG inventory submissions received as at 24 October 2011. [Publication: National Greenhouse Gas Inventory Data 1990-2009]