CAMS Global Atmospheric Composition
Quick answer: CAMS from Copernicus provides global atmospheric composition reanalysis and forecasts including aerosols, chemical species, and greenhouse gases.
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Format
NetCDF / GRIB
Geometry
Raster (atmospheric grid)
Coverage
Global
Resolution
~80km (0.75°), regional: ~10km
About this dataset
Copernicus Atmosphere Monitoring Service global reanalysis and forecast of atmospheric composition at ~80km resolution.
The Copernicus Atmosphere Monitoring Service (CAMS) provides global atmospheric composition data including aerosols, chemical species, and greenhouse gases. The global reanalysis (EAC4) offers a consistent 4-decade record from 2003-present at approximately 80km resolution. Forecast products provide 5-day predictions of air quality, dust, and fire emissions.
Download steps from this dataset’s GeoDataViewer guide. Follow the original provider for current files and access requirements.
How to download
- 1 Open the CAMS Atmosphere Data Store.
- 2 Select the product (reanalysis, forecast, fire emissions).
- 3 Choose variables and spatial extent.
- 4 Download GRIB or NetCDF and process with Python/xarray.
FAQ
What is the difference between CAMS and Sentinel-5P?
CAMS provides model-based reanalysis and forecasts of atmospheric composition (synthesizing multiple observations), while Sentinel-5P provides direct satellite measurements of specific trace gases.
Is CAMS data available in near real-time?
Yes. CAMS provides daily global forecasts of aerosols, chemical species, and air quality indices with 5-day lead time.