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Air Quality & Atmospheric Data

CAMS Global Atmospheric Composition

CAMS from Copernicus provides global atmospheric composition reanalysis and forecasts including aerosols, chemical species, and greenhouse gases.

Format NetCDF / GRIB
Coverage Global
Resolution ~80km (0.75°), regional: ~10km
License Free open access (Copernicus)
Update Daily forecasts; reanalysis monthly
Download source Open official source

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.

Air quality forecasting Aerosol monitoring Dust transport analysis Fire emission assessment

How to download

  1. 1 Open the CAMS Atmosphere Data Store.
  2. 2 Select the product (reanalysis, forecast, fire emissions).
  3. 3 Choose variables and spatial extent.
  4. 4 Download GRIB or NetCDF and process with Python/xarray.

CAMS Atmosphere Data Store

Download reanalysis and forecast products

→

CAMS Global Composition page

Global atmospheric composition forecasts

→

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.