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CAMS Methane Hot Spot service shows an overview of methane plumes from methane super-emitters detected using data from the TROPOspheric Monitoring Instrument (TROPOMI) onboard the Copernicus Sentinel-5 Precursor satellite. The presented plumes are detected using a two-step machine learning pipeline, following the methodology described in Schuit et al. (2023), and manually verified by two experts. The map available through methane-explorer shows approximate source locations based on single TROPOMI plumes and initial source rate estimates calculated using the Integrated Mass Enhancement (IME) method. Due to factors such as varying emissions, cloud cover, and viewing geometry, the number of detected plumes fluctuates from one week to another. The provided detections focus on plume-like structures and thus exclude larger-scale enhancements such as those seen over the Permian Basin or over wetland areas. While other source sectors, such as livestock, are responsible for a large fraction of total emissions, those emissions are not spatially concentrated enough to be detected as individual plumes with TROPOMI and therefore do not show up on the Methane Explorer.
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Please note that delivered plumes have only been subject to initial verification, precise quantification and final interpretation require more extensive evaluation. |
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