Worldwide air-quality and emissions monitoring

Regulators, health agencies and researchers need objective, comparable air-quality data across whole countries — not a sparse network of ground stations with gaps and blind spots. ETD delivers Sentinel-5P trace gases (NO₂, SO₂, CO, CH₄, HCHO, aerosols) as both absolute concentration and a like-for-like year-on-year delta, so seasonal cycles cancel and genuine change — a factory coming online, a traffic rebound, an industrial shutdown — stands out as a clear anomaly, daily, worldwide, with no sensors to install.