Sentinel-3 OLCI Level-1B dataTwo different Level-1B products can be obtained
The Level-1B products in EO processing mode contain calibrated, ortho-geolocated and spatially re-sampled Top Of Atmosphere (TOA) radiances for 21 OLCI spectral bands. In Full Resolution products (i.e. at native instrument spatial resolution), these parameters are provided for each re-gridded pixel on the product image and for each removed pixel. In Reduced Resolution products (i.e. at a resolution four times coarser), the parameters are only provided on the product grid.
- OL_1_EFR - output during EO processing mode for Full Resolution
- OL_1_ERR -output during EO processing mode for Reduced Resolution
There are two timeframes for the delivery of the products:
- Near-Real-Time (NRT): delivered to the users less than three hours after acquisition of the data by the sensor
- Non-Time Critical (NTC): delivered no later than one month after acquisition or from long-term archives. Typically, the product is available within 24 or 48 hours.
The data is disseminated in .zip archive containing free-standing
NetCDF4 product files.
How to access Sentinel-3 OLCI data?
EUMETSAT provides data access through a number of routes, depending on preferred delivery mode and latency of the data.
Sentinel-3 Near-Real-Time SLSTR Fire Radiative Power product
The Copernicus Sentinel-3 (S3) NRT Fire Radiative Power (FRP) product detects and monitors the immediate threats of any 'burning' events over an area size of 1 km2. Commonly gathered under the term of hotspots, these are not only fires over continents, but also flames from persistent land and ocean gas flares, and active erupting volcanoes.
The Copernicus NRT S3 Aerosol Optical Depth (AOD) product quantifies the abundance of all aerosol particles suspended in the air and monitors their global distribution and long-range transport, at the scale of 9.5 x 9.5 km2. It is only applicable during daytime
All these observations are made available in less than three hours from the SLSTR observation sensing time.The EUMETSAT deployments are based on the NRT v2.0 processors. EUMETSAT is responsible for the generation and quality of all the Copernicus Sentinel-3 NRT atmospheric products, as well as its long-term validation and improvements, acting on behalf of the European Commission (EC). One of the key users of these products is the Copernicus Atmosphere Monitoring Service (CAMS), who is responsible for tracking the intensity and emissions of wildfires around the world.
Additional info on EUMETSAT S3 NRT website
How to access data ?
Sentinel3 are freely accessible at https://coda.eumetsat.int/#/home (registration required).
Choose Product Type", and select either SL_2_FRP___ (for Sentinel-3 SLSTR NRT FIre) or SL_2_AOD___ (for Sentinel-3 NRT Aerosol). After you defined the dates, a series of granules will be displayed over the world. And you can select the areas of your choice.
You can also visualize the current Sentinel-3 NRT Fire products on EUMETSAT S3 NRT website