Copernicus Atmosphere Monitoring Service (CAMS) Global Near-Real-Time

Dataset Availability
Dataset Provider
Earth Engine Snippet
aerosol atmosphere climate copernicus ecmwf forecast


NOTE (2024-04-19): Due to modernization work impacting the Copernicus Climate Data Store, production of ECMWF datasets may be disrupted. The provider did not specify a planned completion date, so for more details, see the user forum.

The Copernicus Atmosphere Monitoring Service provides the capacity to continuously monitor the composition of the Earth's atmosphere at global and regional scales. The main global near-real-time production system is a data assimilation and forecasting suite providing two 5-day forecasts per day for aerosols and chemical compounds that are part of the chemical scheme.

Prior to 2021-07-01 only two parameters were available, 1. Total Aerosol Optical Depth at 550 nm surface 2. Particulate matter d < 25 um surface Note that system:time_start refers to forecast time.


44528 meters


Name Units Min Max Description
total_aerosol_optical_depth_at_550nm_surface 9.6e-05* 3.58255*

Total Aerosol Optical Depth at 550 nm

particulate_matter_d_less_than_25_um_surface kg/m^3 0* 7.6e-05*

Particulate matter d < 2.5 um

total_column_nitrogen_dioxide_surface kg/m^2

Total column Nitrogen dioxide surface

total_column_sulphur_dioxide_surface kg/m^2

Total column Sulfur dioxide surface

total_column_carbon_monoxide_surface kg/m^2

Total column Carbon monoxide surface

total_column_formaldehyde_surface kg/m^2

Total column Formaldehyde surface


Gems Total column ozone surface


Sea Salt Aerosol Optical Depth at 550 nm surface


Dust Aerosol Optical Depth at 550 nm surface


Organic Matter Aerosol Optical Depth at 550 nm surface


Black Carbon Aerosol Optical Depth at 550 nm surface


Sulfate Aerosol Optical Depth at 550 nm surface


Total Aerosol Optical Depth at 469 nm surface


Total Aerosol Optical Depth at 670 nm surface


Total Aerosol Optical Depth at 865nm surface


Total Aerosol Optical Depth at 1240 nm surface


Nitrate aerosol optical depth at 550 nm


Ammonium aerosol optical depth at 550 nm

particulate_matter_d_less_than_1_um_surface kg/m^3

Particulate matter d < 1 um surface

particulate_matter_d_less_than_10_um_surface kg/m^3

Particulate matter d < 10 um surface

uv_biologically_effective_dose_surface W/m^2

UV biologically effective dose surface

total_column__peroxyacetyl_nitrate_surface kg/m^2

Total column peroxyacetyl nitrate surface

total_column__isoprene_surface kg/m^2

Total column isoprene surface

total_column_nitrogen_monoxide_surface kg/m^2

Total column nitrogen monoxide surface

total_column_hydrogen_peroxide_surface kg/m^2

Total column hydrogen peroxide surface

total_column_hydroxyl_radical_surface kg/m^2

Total column hydroxyl radical surface

total_column_methane_surface kg/m^2

Total column methane surface


Total column ethane surface

total_column_propane_surface kg/m^2

Total column propane surface

total_column_nitric_acid_surface kg/m^2

Total column nitric acid surface

* estimated min or max value

Image Properties

Image Properties

Name Type Description
model_initialization_hour INT

Product creation hour

model_initialization_datetime STRING

Product creation time and date

model_forecast_hour INT

Product forecast hour

Terms of Use

Terms of Use

There is no restriction on use or reproduction and redistribution, with or without adaptation, for commercial or non-commercial purposes. This data policy applies to the data and information generated within the Copernicus programme, i.e., Sentinel mission data and Copernicus service information.

See the full COPERNICUS data license.

The license clauses with attribution requirements are shown below:

5.1.1. Where the Licensee communicates or distributes Copernicus Products to the public, the Licensee shall inform the recipients of the source by using the following or any similar notice:

  • 'Generated using Copernicus Climate Change Service information [Year]' and/or
  • 'Generated using Copernicus Atmosphere Monitoring Service information [Year]'.

5.1.2. Where the Licensee makes or contributes to a publication or distribution containing adapted or modified Copernicus Products, the Licensee shall provide the following or any similar notice:

  • 'Contains modified Copernicus Climate Change Service information [Year]'; and/or
  • 'Contains modified Copernicus Atmosphere Monitoring Service information [Year]'

5.1.3. Any such publication or distribution covered by clauses 5.1.1 and

5.1.2 shall state that neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.


  • Benedetti, A., and Coauthors, 2009: Aerosol analysis and forecast in the ECMWF Integrated Forecast System. Part II : Data assimilation, J. Geophys. Res., 114, D13205 doi:10.1029/2008JD011115.

  • Morcrette, and Coauthors, 2009: Aerosol analysis and forecast in the ECMWF Integrated Forecast System. Part I: Forward modelling, J. Geophys. Res., 114, D06206. doi:10.1029/2008JD011235


Explore with Earth Engine

Code Editor (JavaScript)

// Get data generated from model hour 0 for January 1st, 2019.
var dataset = ee.ImageCollection('ECMWF/CAMS/NRT')
                  .filterDate('2019-01-01', '2019-01-02')
                  .filter('model_initialization_hour == 0');

// Select first and last forecast hours.
var hour00 = dataset.filter('model_forecast_hour == 0').first();
var hour21 = dataset.filter('model_forecast_hour == 21').first();

// Visualization parameters for specified aerosol band.
var visParams = {
  bands: ['total_aerosol_optical_depth_at_550nm_surface'],
  min: 0.0,
  max: 3.6,
  palette: [
    '5e4fa2', '3288bd', '66c2a5', 'abe0a4', 'e6f598', 'ffffbf',
    'fee08b', 'fdae61', 'f46d43', 'd53e4f', '9e0142'

// Display forecasts on the map.
Map.setCenter(70, 45, 3);
Map.addLayer(hour00, visParams, 'Total Aerosal Optical Depth - H00', true, 0.8);
Map.addLayer(hour21, visParams, 'Total Aerosal Optical Depth - H21', true, 0.8);
Open in Code Editor