An international study involving reveals hundreds of major methane leaks linked to the global exploitation of oil and gas
. A quarter of anthropogenic emissions of this greenhouse gas come from the global exploitation of coal, oil and natural gas, of which CHhad already exposed, based on the case of the United States, the vast underestimation in official inventories of emissions related to the extraction and distribution of oil and gas. A discrepancy which could be explained by sporadic undeclared releases of large quantities of methane by operators in the sector.
and associated with the company Kayrros, quantified worldwide the most abundant methane emissions released into the atmosphere by the hydrocarbon sector. These may be accidental discharges or related to maintenance operations which lead to very large leaks. For this, the researchers systematically analyzed thousands of images produced daily for two years by ESA’s Sentinel-5P satellite.
Carte des émetteurs. Map showing the location of the main gas pipelines and the main sources of methane emissions related to the oil and gas industry © Kayrros Inc., Esri, HERE, Garmin, FAO, NOAA, USGS, OpenStreetMap contributors, and the GIS User Community Corresponding to 10% of the estimated emissions from the sector, these observations are only the tip of the iceberg, as the satellite is only capable of systematically detecting the most massive plumes, which are also the most intermittent . The study shows that these massive releases are not random and chaotic, but detected systematically above certain oil and gas extraction sites.
But would plugging these “leaks” be so costly for operators to justify such practices? By taking into account the societal costs underlying the impacts on climate and air quality as well as the price of lost gas, the study shows on the contrary that limiting them would be synonymous with billions of dollars of net savings for the countries responsible for it.
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