(5)Member States and the Union are parties to the United Nations Economic Commission for Europe (UNECE) Convention on Long-Range Transboundary Air Pollution of 1979 (the ‘LRTAP Convention’) and to several of its Protocols, including the Protocol to Abate Acidification, Eutrophication and Ground-level Ozone of 1999, which was revised in 2012 (the ‘revised Gothenburg Protocol’).