What is Copernicus?
Copernicus is the European Union's Earth observation programme, managed jointly by the European Commission and ESA. Established under EU regulation as Europe's flagship space programme, Copernicus operates the Sentinel satellite constellation and a suite of ground-based and airborne measurement systems to provide continuous, comprehensive, and freely accessible Earth observation data. Over 350 terabytes of satellite data are distributed daily from Copernicus data hubs.
The Sentinel satellite family
Sentinel-1 (C-band SAR, 10 m resolution, 6-day repeat): All-weather radar imaging for emergency mapping, Arctic ice monitoring, subsidence analysis. Sentinel-2 (13-band optical, 10–60 m, 5-day repeat): Land monitoring, agriculture, forestry, coastal and inland water monitoring. Sentinel-3 (ocean colour, sea surface temperature, altimetry): Marine environment, global vegetation, fire monitoring. Sentinel-5P (atmospheric composition): Daily global maps of tropospheric NO₂, SO₂, ozone, CO, methane, formaldehyde — critical for air quality monitoring. Sentinel-6 (radar altimetry): High-precision sea level measurements continuing the Topex/Jason series. Sentinel-4 and Sentinel-5 (atmospheric from GEO): Will provide hourly atmospheric composition monitoring over Europe and Africa from 2024+.
Applications and downstream market
Copernicus data underpins a multi-billion-euro downstream industry: agriculture analytics (crop insurance, yield prediction), environmental compliance monitoring (deforestation detection, marine pollution), urban planning, disaster response (flood, fire, earthquake rapid mapping via the Copernicus Emergency Management Service), and climate research. The freely accessible data policy has been fundamental to the development of the European EO analytics industry.