![ECMWF/CAMS/NRT](https://developers.google.com/earth-engine/datasets/images/ECMWF/ECMWF_CAMS_NRT_sample.png) Dataset Availability : 2016-06-22T12:00:00Z--2026-11-15T12:00:00Z Dataset Producer : [European Centre for Medium-Range Weather Forecasts (ECMWF)](https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-atmospheric-composition-forecasts) Cadence : 1 Day Tags : [aerosol](https://developers.google.com/earth-engine/datasets/tags/aerosol.md.txt) [atmosphere](https://developers.google.com/earth-engine/datasets/tags/atmosphere.md.txt) [climate](https://developers.google.com/earth-engine/datasets/tags/climate.md.txt) [copernicus](https://developers.google.com/earth-engine/datasets/tags/copernicus.md.txt) [ecmwf](https://developers.google.com/earth-engine/datasets/tags/ecmwf.md.txt) [forecast](https://developers.google.com/earth-engine/datasets/tags/forecast.md.txt) particulate-matter #### Description 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. ### Bands **Bands** Pixel size: 44528 meters (all bands) | Name | Units | Min | Max | Pixel Size | Description | |---|---|---|---|---|---| | `total_aerosol_optical_depth_at_550nm_surface` | | 9.6e-05\* | 3.58255\* | 44528 meters | Total Aerosol Optical Depth at 550 nm | | `particulate_matter_d_less_than_25_um_surface` | kg/m\^3 | 0\* | 7.6e-05\* | 44528 meters | Particulate matter d \< 2.5 um | | `total_column_nitrogen_dioxide_surface` | kg/m\^2 | | | 44528 meters | Total column Nitrogen dioxide surface | | `total_column_sulphur_dioxide_surface` | kg/m\^2 | | | 44528 meters | Total column Sulfur dioxide surface | | `total_column_carbon_monoxide_surface` | kg/m\^2 | | | 44528 meters | Total column Carbon monoxide surface | | `total_column_formaldehyde_surface` | kg/m\^2 | | | 44528 meters | Total column Formaldehyde surface | | `gems_total_column_ozone_surface` | | | | 44528 meters | Gems Total column ozone surface | | `sea_salt_aerosol_optical_depth_at_550nm_surface` | | | | 44528 meters | Sea Salt Aerosol Optical Depth at 550 nm surface | | `dust_aerosol_optical_depth_at_550nm_surface` | | | | 44528 meters | Dust Aerosol Optical Depth at 550 nm surface | | `organic_matter_aerosol_optical_depth_at_550nm_surface` | | | | 44528 meters | Organic Matter Aerosol Optical Depth at 550 nm surface | | `black_carbon_aerosol_optical_depth_at_550nm_surface` | | | | 44528 meters | Black Carbon Aerosol Optical Depth at 550 nm surface | | `sulphate_aerosol_optical_depth_at_550nm_surface` | | | | 44528 meters | Sulfate Aerosol Optical Depth at 550 nm surface | | `total_aerosol_optical_depth_at_469nm_surface` | | | | 44528 meters | Total Aerosol Optical Depth at 469 nm surface | | `total_aerosol_optical_depth_at_670nm_surface` | | | | 44528 meters | Total Aerosol Optical Depth at 670 nm surface | | `total_aerosol_optical_depth_at_865nm_surface` | | | | 44528 meters | Total Aerosol Optical Depth at 865nm surface | | `total_aerosol_optical_depth_at_1240nm_surface` | | | | 44528 meters | Total Aerosol Optical Depth at 1240 nm surface | | `var98-0-210-250_surface` | | | | 44528 meters | Nitrate aerosol optical depth at 550 nm | | `var98-0-210-251_surface` | | | | 44528 meters | Ammonium aerosol optical depth at 550 nm | | `particulate_matter_d_less_than_1_um_surface` | kg/m\^3 | | | 44528 meters | Particulate matter d \< 1 um surface | | `particulate_matter_d_less_than_10_um_surface` | kg/m\^3 | | | 44528 meters | Particulate matter d \< 10 um surface | | `uv_biologically_effective_dose_surface` | W/m\^2 | | | 44528 meters | UV biologically effective dose surface | | `total_column__peroxyacetyl_nitrate_surface` | kg/m\^2 | | | 44528 meters | Total column peroxyacetyl nitrate surface | | `total_column__isoprene_surface` | kg/m\^2 | | | 44528 meters | Total column isoprene surface | | `total_column_nitrogen_monoxide_surface` | kg/m\^2 | | | 44528 meters | Total column nitrogen monoxide surface | | `total_column_hydrogen_peroxide_surface` | kg/m\^2 | | | 44528 meters | Total column hydrogen peroxide surface | | `total_column_hydroxyl_radical_surface` | kg/m\^2 | | | 44528 meters | Total column hydroxyl radical surface | | `total_column_methane_surface` | kg/m\^2 | | | 44528 meters | Total column methane surface | | `total_column__ethane_surface` | | | | 44528 meters | Total column ethane surface | | `total_column_propane_surface` | kg/m\^2 | | | 44528 meters | Total column propane surface | | `total_column_nitric_acid_surface` | kg/m\^2 | | | 44528 meters | 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](https://ads.atmosphere.copernicus.eu/disclaimer-privacy). 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. ### Citations Citations: - 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](https://doi.org/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](https://doi.org/10.1029/2008JD011235) ### DOIs - - ### Explore with Earth Engine > [!NOTE] > **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine) ### Code Editor (JavaScript) ```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](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/ECMWF/ECMWF_CAMS_NRT) [Copernicus Atmosphere Monitoring Service (CAMS) Global Near-Real-Time](https://developers.google.com/earth-engine/datasets/catalog/ECMWF_CAMS_NRT.md.txt) 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 ... ECMWF/CAMS/NRT, aerosol,atmosphere,climate,copernicus,ecmwf,forecast 2016-06-22T12:00:00Z/2026-11-15T12:00:00Z -90 -180 90 180 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.1029/2008JD011235](https://doi.org/https://ads.atmosphere.copernicus.eu/cdsapp#!/dataset/cams-global-atmospheric-composition-forecasts) - [https://doi.org/10.1029/2008JD011235](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/ECMWF_CAMS_NRT)