Methane Alert and Response System (MARS)
Why in News?
It has been in the news recently because it has started producing actionable data, helping countries and firms track and plug methane “super‑emitter” sites, especially in the oil–gas sector and waste/landfill hotspots.
What is MARS?
- Launched by: The United Nations Environment Programme (UNEP) during COP27.
- Agency: It operates under the International Methane Emissions Observatory (IMEO).
- Technology: It uses high-resolution satellite data (from NASA, ESA, and Italian satellites) to detect atmospheric methane concentrations.
How It Works? (The 4-Step Process)
- Detection: Satellites scan the globe for methane "hotspots."
- Attribution: Scientists pinpoint the exact facility (mine, pipeline, or landfill) responsible for the leak.
- Notification: MARS sends a direct private alert to the relevant government or company, offering technical support to fix it.
- Monitoring: The system continues to watch the site to see if the leak has been stopped.
Why Methane?
- Potency: Methane is over 80 times more powerful at trapping heat than Carbon Dioxide (CO2) over a 20-year period.
- Short-Lived: It stays in the atmosphere for only about 12 years, meaning cutting methane leads to rapid cooling effects on the planet.
Targeted Sectors
- Fossil Fuels: Leaking pipelines, "venting" at oil wells, and coal mine vents.
- Waste Management: Massive emissions from uncontrolled landfills.
- Agriculture: Livestock and rice cultivation (though satellite detection is more challenging here than at industrial points).
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