Sentinel-3 L2 OLCI
OLCI (Ocean and Land Colour Instrument) Level-2 products consist of geophysical quantities derived from the Level-1 product. Marine and land products are generated separately and contain extra atmospheric information relevant for both application domains. OLCI products are available in two resolutions: FR (Full Resolution 300 m) and RR (Reduced Resolution 1.2 km).
The product labels mean in detail
- WFR: Full resolution ocean colour, water and atmosphere parameters
- WRR: Reduced resolution ocean colour, water and atmosphere parameters
- LFR: Full resolution land colour and atmosphere parameters
- LRR: Reduced resolution land colour and atmosphere parameters
The Sentinel-3 L2 OLCI products are outputs from the OLCI Level-2 processor and contain land and atmospheric geophysical products at full and reduced resolutions. The products are assumed to be computed in Near Real Time (NRT) (i.e. delivered to users less than 3 hours after acquisition), in Non-Time Critical (NTC) (i.e. within 1 month after acquisition) or in re-processed NTC.
L2 OLCI Land
Each product provides as measurement several data files:
- Surface product as Global Vegetation Index (OGVI) and Terrestrial Chlorophyll Index (OTCI)
- Atmosphere by-products as Integrated Water Vapour (IWV) column (this product also contains information for water pixels and is identical to that included in OL_2_WRR and OL_2_WFR)
- Error estimates for all products
Several associated variables are also provided in the annotations data files:
- Rectified reflectance for red and MIR channels (RC681 and RC865)
- Classification, quality and science flags (LQSF)
- Common data such as the ortho-geolocation of land pixels, solar and satellite angles, atmospheric and meteorological data, time stamp or instrument information. These variables are inherited from Level-1B products.
L2 OLCI Water
Each product provides the following measurement data files:
- Water-leaving reflectance (Rxxx) for all bands except those dedicated to measurement of atmospheric gas. Two types of reflectance are distinguished, the BAC reflectance for Baseline Atmospheric Correction algorithm (MERIS heritage) and the AAC reflectance for Alternative Atmospheric Correction algorithm (based on a neural network procedure).
- BAC is used for the operational output of the reflectance in this product package but in cases where reflectances are computed and AAC is needed, a setting has been defined in the configuration file to switch between algorithms.
- Ocean colour products such as algal pigment (chl_oc4me and chl_nn, in two separated files), Total Suspended Matter (TSM_NN) concentrations and transparency characterisation based on the Diffuse Attenuation coefficient (KD490_M07).
- Neural network water-inherent optical properties such as CDM absorption (ADG_443_NN).
- Atmosphere by-products such as Photosynthetically Active Radiation (PAR), Aerosol Optical Depth /Aerosol Angstrom exponent (gathered in one file and noted respectively as T865 and A865) and Integrated Water Vapour (IWV) column. Note that this last variable also contains information for water pixels and is identical to the one included in OL_2_WRR and OL_2_WFR.
- Error estimates for all the products.
Several associated variables are also provided in the annotations data files:
- Classification, Water Quality and Science Flags (WQSF). The WQSF file provides information about validity, suspicious quality, cosmetic filling, environment and algorithm status.
- Common data such as the ortho-geolocation of land pixels, solar and satellite angles, atmospheric and meteorological data, time stamp or instrument information. These variables are inherited from Level-1B products.
On this platform the NRT (near real time), STC (short time critical) and NTC (non time critical) products are available.
Availability
- Germany: 2016-04 - now
- Europe: 2016-04 - now
- Global: 2016-04 - now
Usage requirements
There are certain requirements that must be met for use. Some data or services require an individual application. For more information, please contact CODE-DE Support.
| Required? | Remark | |
| Registration on CODE-DE | No | --- |
| Cloud resources on CODE-DE | No | --- |
| Individual request | No | --- |
Access
Depending on the environment and the intended use, there are several ways to access the data:
- EO Browser: -
- Data Explorer:
- Data catalogue: CODE-DE or CREODIAS
- Pfad zum Repository auf einer Virtuellen Maschine:
- /codede/Sentinel-3/OLCI/OL_2_LFR
- /codede/Sentinel-3/OLCI/OL_2_LRR
- /codede/Sentinel-3/OLCI/OL_2_WFR
- /codede/Sentinel-3/OLCI/OL_2_WRR
More information
Further information on this product can also be found on the following external pages:
Terms of use
Use of the product is subject to the following terms of use:
