We conduct urgent research into climate, air quality and ecosystem impact. Earth’s climate is changing because of manmade greenhouse gas emissions. Carbon dioxide and methane are the two main contributors to the enhanced greenhouse effect. Aerosols cool the Earth by scattering and through cloud formation, but it is uncertain by how much. Global warming can trigger tipping points in the Earth’s ecosystem; we study for example permafrost thaw, wildfires and climate-cloud relations
Responsible for ¼ of human-made greenhouse effect
About 30 times more powerful than CO₂ (GWP-100)
Large emissions from fossil fuel industry, landfills, livestock
Small particles in the atmosphere
Largest unknown factor in climate change
Strong impact on air quality
Reactions with atmospheric gases contribute to global warming
Trace gas to calculate CO₂ emissions from forest fires
Most important human-made greenhouse gas
Hard to monitor emissions because of long lifetime
TROPOMI aboard Sentinel-5p can be used to detect large methane emission plumes everywhere around the world. These plumes are automatically detected using the machine-learning setup described in Schuit et al. (2023, ACP). The weekly world maps show approximate source locations based on single TROPOMI plumes as well as initial source rate estimates based on an automated mass balance method.
The Earth programme is headed by dr. Aaldert van Amerongen. It consists of the Earth Science Group attached to the program and instrument specialists assigned to the program.
The Dutch space instrument TROPOMI onboard Sentinel-5P automatically detects large methane emission plumes across the globe. The machine-learning technology for this is described in Schuit et al. (2023). The world maps show approximate source locations based on single TROPOMI plumes and initial source rate estimates calculated using an automated mass balance method. The number of detections fluctuates from week to week because of varying emissions, cloud cover, and viewing geometry. Plumes have only been subject to initial verification. Precise quantification and final interpretation require more extensive evaluation. The detections exclude larger-scale enhancements such as seen over the Permian Basin or over wetland areas.
If you use these detections for your research or other purposes, please let us know. We are happy to collaborate with anybody interested in these detections. This work is licensed under a Creative Commons Attribution 4.0 International License. When referencing the data, please credit the product generation to the SRON team (earth.sron.nl/methane-emissions/) and cite the Schuit et al. (2023) publication; Copernicus (modified) Sentinel-5p data have been used.
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