Satellite imagery shows promise in tracking specific methane leaks from fossil fuels
In short: Researchers evaluated the capabilities of PRISMA, a new spaceborne imaging spectrometer, to identify and map methane point emissions. By analyzing data from oil and gas fields and coal mines across several countries, they demonstrated that this satellite technology can detect methane plumes associated with industrial activities.
The study used a matched-filter algorithm to analyze the 2300 nm shortwave infrared region of PRISMA's spectra. The results showed that surface brightness and how uniform the ground is significantly impact how accurately these plumes can be detected and measured.
While the tool successfully identified real hotspots in regions like Algeria and the USA, the study was primarily a simulation-based sensitivity analysis and performance evaluation. This means while it shows potential, the precision of measurements can vary based on local environmental conditions.
Why it matters: Satellite spectroscopy offers a viable way to monitor industrial methane leaks, which is crucial for climate change mitigation.
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Sources
- Source: Research: Guanter et al. (2021). Mapping methane point emissions with the PRISMA spaceborne imaging spectrometer. Remote Sensing of Environment. · other-oa
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