Imagine investing $88 million into a satellite with the groundbreaking potential to monitor methane emissions globally, only for it to fail after just 15 months. This was the unfortunate fate of MethaneSat, a satellite that went offline in July, cutting short its five-year mission. Yet, even during its brief operational period, MethaneSat made monumental strides in revealing significant underreporting of emissions by the oil and gas sector.
According to an initial evaluation of the satellite’s findings released by the Environmental Defense Fund (EDF), the organization managing the MethaneSat project, the data collected over a year illustrated a troubling reality: emissions from the oil and gas industry were consistently and substantially higher than those reported in widely acknowledged emissions inventories.
The report highlighted that even in regions known for low emission intensity, the actual emissions fell short of the industry’s own stated goals. This revelation underscores the pressing need for enhanced efforts from both corporations and government entities to mitigate emissions effectively.
But what does it mean when we say methane is a potent greenhouse gas? Well, according to the Environmental Protection Agency (EPA), methane is about 28 times more efficient than carbon dioxide at trapping heat in our atmosphere. The extraction and processing of fossil fuels stand out as significant contributors to methane pollution, making the oil and gas sector the largest industrial source of methane emissions in the United States.
MethaneSat was specifically engineered to locate sources of methane emissions, primarily attributable to the fossil fuel industry. With its advanced spectrometers, the satellite could detect minute traces of emissions across vast oil and gas fields and accurately pinpoint significant leak sources, delivering unparalleled high-resolution images of methane escapes.
Throughout its limited time in orbit, MethaneSat compiled data from over 221 scenes across 45 different oil and gas-producing regions, capturing information from half of the world’s onshore fossil fuel production. Analysts at the EDF leveraged this data to assess and rank oil and gas basins globally based on their total emissions as well as the intensity of methane emissions relative to production levels.
The results of this analysis were eye-opening. MethaneSat’s observations indicated that overall methane emissions from the oil and gas industry were, alarmingly, 50% higher than those reflected in the well-known Emissions Database for Global Atmospheric Research and the EPA’s Greenhouse Gas Inventory. While methane intensity tended to be lower in areas focused on natural gas compared to oil, in regions where gas made up at least 20% of fuel production, emissions were three times greater than what global inventories suggested. Furthermore, the data pointed out that low-producing oil and gas wells are significant contributors to methane emissions, responsible for 40% of emissions in regions producing less than 7% of fossil fuels.
However, not all findings painted a dire picture. Interestingly, methane emissions from oil-centric basins were found to be 30% lower than what previous inventory records had indicated, emphasizing the necessity for more precise monitoring systems to track progress in reducing emissions.
Although the operational life of MethaneSat was tragically cut short, its contributions have been transformative for the field of emissions tracking. Researchers will persist in analyzing the data collected to further illuminate the issue of methane leaks and strengthen regulations aimed at holding polluters accountable. As these initial findings suggest, it’s evident that there remains substantial work ahead in tackling emissions and combating climate change.
