RT null T1 Madrid landfill methane emission quantification comparison study A1 United Nations Environment Programme, YR 2026 FD 2026-05 LK https://wedocs.unep.org/handle/20.500.11822/49411 UL https://wedocs.unep.org/handle/20.500.11822/49411 NO UNEP’s International Methane Emissions Observatory supports measurement and research studies around the world to close the knowledge gap on methane emissions and provide policy-relevant insights to decisionmakers. The following study provides insights related to: Assessment of approaches to detect and quantify methane emissions from a major landfill. DS UN Environment Document Repository RD Sep 16, 2026