The National Inventory Report 2013 (NIR 2013) gives a detailed and com-prehensive description of the methodology applied in the Austrian air emissions inventory for the greenhouse gases of the “Kyoto basket” (carbon dioxide, methane, nitrous oxide, HFC, PFC and SF6). With this report, Austria complies with its reporting obligations under the UNFCCC and the Kyoto Protocol by providing transparent and verifi-able documentation. It contains sector-specific emissions for the years 1990 to 2011, emission factors, activity data and basic data for emis-sion calculations as well as additional information relevant for repor-ting under the Kyoto Protocol. Moreover, the NIR 2013 provides docu-mentation of the national inventory system and quality assurance as performed by the accredited inspection body (ISO/IEC 17020) on emis-sion inventories.