Are methane emissions in India being missed?, Pg7

Key Highlights:

• Methane emissions from India's waste sector account for approximately 15% of the nation's total methane output.
• Satellite data identified major dumpsites in Pirana (Ahmedabad), Deonar and Kanjurmarg (Mumbai) as significant methane emitters in 2023.
• Ghazipur and Bhalswa landfills in Delhi emit an estimated 0.85 to 0.96 million tons of CO2 equivalent annually.
• Kanjurmarg landfill in Mumbai emits 1.05 million tons, nearly 10 times the model's estimate.
• Satellite surveys globally estimate that actual landfill emissions can exceed model-based predictions by around 1.8 times.

Detailed Insights:

• Methane, generated from decomposing organic matter in landfills, is 84 times more potent than carbon dioxide over a 20-year period.
• Traditional methods of estimating emissions rely on waste volume data and baseline assumptions, which are often inaccurate in developing countries.
• Satellite technology offers two types of data: regional measurements for national trends and fine-resolution detection to pinpoint hotspots.
• National Green Tribunal established a committee to conduct ground investigations at flagged sites based on ISRO's satellite data.
• ClimateTRACE and WasteMap platforms collate global monitoring data, combining it with baseline statistics for advanced modeling.
• Discrepancies between satellite observations and older state models highlight a critical information gap in accurately assessing methane emissions.
• Coordinated action is needed on expanding satellite monitoring, establishing on-ground validation systems, and creating standardized data-sharing protocols.
• Revised municipal waste guidelines envision a centralized data portal for bulk waste management, which could be expanded to track emissions.
• Regional bodies like the Commission for Air Quality Management (CAQM) can oversee monitoring, while the Swachh Bharat Mission can integrate methane targets.
• Integrating data on dumping patterns and gas collection systems can help pinpoint leaks and identify hidden hotspots in landfills.

Key Concepts Involved:

• Methane: A greenhouse gas produced by the decomposition of organic matter, significantly more potent than carbon dioxide over shorter time horizons.
• Swachh Bharat Mission: A national program focused on improving sanitation and waste management across India.
• Anthropogenic emissions: Emissions resulting from human activities, as opposed to natural processes.