RT null T1 Lessons from a Decade of Emissions Gap Assessments A2 Olhoff, A. A2 Christensen, J. K1 carbon emission K1 greenhouse gas K1 temperature K1 global warming K1 methane K1 tropospheric ozone K1 hydrofluorocarbon K1 pollutant K1 energy efficiency K1 renewable energy K1 transport K1 electricity K1 coal K1 climate change mitigation K1 low carbon economy PB United Nations Environment Programme YR 2019 FD 2019 LK https://wedocs.unep.org/handle/20.500.11822/30022 UL https://wedocs.unep.org/handle/20.500.11822/30022 NO https://www.unep.org/resources/emissions-gap-report-2019 DS UN Environment Document Repository RD Sep 19, 2026