5.8Subsection · 5 applications
Air Pollution Monitoring

Satellite NO₂ and PM2.5 Pollution Tracking
- 1Sensor satelliteSentinel-5P scans tropospheric NO₂ columns daily
- 2DownlinkRaw L1 radiance data sent to ground stations
- 3ProcessingRetrieval algorithms output gridded pollutant maps
- 4Policy alertCity dashboards trigger smog-action advisories
