SEASONAL VARIATION OF METHANE CONCENTRATION AND EMISSION INTENSITY FROM BANTARGEBANG LANDFILL, INDONESIA

Landfill methane emissions are a significant contributor to greenhouse gas emissions that cause global warming, especially in developing nations like Indonesia that produce a lot of organic waste. The climate around the landfill has a big impact on the pattern of methane gas release into the atmosphere. This study aimed to analyze the spatial distribution of methane gas from the BantarGebang landfill by season in 2023 using Sentinel-5P and to examine its relationship with meteorological factors in the landfill area.The results showed that the average methane concentration during the rainy season was 1779.6 ppm and increased to 1817.4 ppm during the dry season. The plume moves southward during the rainy season, whereas gas gathers closer to the emission source during the dry season. Weather-related variables, such as wind and rainfall, affect this.This study shows that Sentinel-5P is effective in detecting seasonal methane patterns in tropical regions and supports methane gas management strategies, including the implementation of Landfill Gas-to-Energy (LFGE) and monitoring, Reporting, and Verification (MRV) systems in order to achieve the 2030 Nationally Determined Contribution (NDC) targets.