Copernicus Atmosphere Monitoring Service (CAMS)

CAMS provides global and regional atmospheric composition data — including PM2.5, PM10, NO₂, O₃, SO₂, CO, methane, and aerosol optical depth — from satellite instruments, ground observations, and model reanalysis. For India, CAMS global forecasts (at ~40 km) and regional European forecasts are the main relevant products. The CAMS reanalysis (EAC4) goes back to 2003. Companion to Sentinel-5P satellite data on atmospheric constituents. Particularly useful when you need consistent atmospheric data across a region where ground monitors are sparse.