Ocean Color - Near Real Time - OLCI Sentinel-3A and 3B Global Coverage

OLCI Sentinel-3A and 3B global coverage ocean color including visible remote sensing reflectances and derived parameters such as chlorophyll-a concentration and light attenuation coefficients.

    Data Access
    HTTPS
    THREDDS
    ERDDAP
    Sample Filenames

    S3A_OL_1_EFR____20160831T093739_20160831T094039_20160831T114446_*.SEN3.tar
    S3A_OL_2_WFR____20170823T154032_20170823T154332_20170823T174158_0179_021_225_2520_MAR_O_NR_002.SEN3.tar
    OLCQCW_I2017234_160343_FL03_closest_[chlora,kd490,...].hdf

    Map projection over Eastern Florida displaying chlorophyll-a concentration

    The Sentinels are a suite of satellite missions developed to serve the operational needs of the European Copernicus program for Earth observations. NOAA CoastWatch/OceanWatch provides Sentinel data to US users through official arrangements with ESA, EUMETSAT and the European Commission.

    Sentinel-3 is a multi-instrument mission to measure sea- and land-surface temperature, ocean and land color and sea-surface topography. Sentinel-3A was launched on 16 February 2016. Sentinel 3B launched on 25 April 2018 with the same suite of instruments.

    The Ocean and Land Colour Instrument (OLCI) is based on heritage from Envisat’s Medium Resolution Imaging Spectrometer (MERIS) to measure visible and thermal infrared radiances with which to generate true color, ocean color radiances and derived products such as chlorophyll, total suspended matter (TSM), diffuse attenuation coefficient at 490 nm (Kd(490)), absorption at 443 nm (a(443), and normalized fluorescence line height (nflh). OLCI has 21 bands at wavelengths from 400 nm to 1020 nm (400, 412, 442, 490, 510, 560, 620, 665, 674, 681, 709, 754, 779, 865, 885, 1024 nm), a spatial resolution of ~300 m (at nadir) and a swath width of 1270 km.

    CoastWatch distributes EUMETSAT native products (L2) also generates and serves mapped and composited products (L3) for US Coastal regions ("CONUS") and global sectors.  Global sectors are "hi-res" 300 m 216 sectors (AA through RL, Figure 1) and "VIIRS-res" 750 m 24 sectors which match VIIRS ocean color (Figure 2). See the data access tab for product lisitings and links.

    CoastWatch hi-res OLCI Sentinel-3 sector coordinate map

    Figure 1.  CoastWatch hi-res OLCI Sentinel-3 sector coordinate map

    CoastWatch VIIRS-res sector coordinate map

    Figure 2. CoastWatch VIIRS-res sector coordinate map

    See the ESA Sentinel-3 website for more information: http://www.esa.int/Our_Activities/Observing_the_Earth/Copernicus/Sentinel-3/Introducing_Sentinel-3

    OLCI Level 1b (e.g., true color) and ocean color Level 2 data (e.g., radiances, chlorophyll, etc.) are generated by EUMETSAT (https://www.eumetsat.int/website/home/Data/Products/Ocean/index.html) and served by CoastWatch.

    See the EUMETSAT ocean data product pages for more information and links to specific documents: https://www.eumetsat.int/website/home/Data/Products/Ocean/index.html

    Short Names
    OLCI Ocean Color
    Temporal Start Date
    October 20, 2016
    Product Families
    Ocean Color
    Measurements
    Chlorophyll-a Concentration
    Diffuse Attenuation Coefficients
    Remote Sensing Reflectance
    Processing Levels
    Level 2
    Level 3
    Latency Groups
    0 Hours <= 24 Hours (NRT)
    Latency Details

    8 hours

    Spatial Resolution Groups
    100m < 2km
    Spatial Resolution Details

    300 m

    Data Providers
    Copernicus
    NOAA
    NESDIS
    STAR
    CoastWatch
    Spatial Coverage

    Global

    Description

    180W - 180E
    90N - 90S

    CoastWatch US Regions

    Description

    Also known as the CoastWatch Regional Nodes: OceanWatch Central Pacific, PolarWatch, Great Lakes, East Coast, Atlantic OceanWatch - Caribbean - Gulf of Mexico, WaterWatch (inland rivers), West Coast

    OC4Me

    Description

    ESA's 4-band combination chlorophyll-a algorithm (OC4ME)

    Sentinel-3

    Description

    Sentinel - 3A / 3B

    Platform Type
    Low Earth Orbit Satellite (LEO)
    Instruments
    Organizations
    ESA
    EUMETSAT
    Copernicus
    Orbital Altitude
    814.5 km
    Orbital Period
    101 minutes
    Orbital Inclination
    98.65¬į
    Equatorial Crossing Times
    10:00 desc

    OLCI

    Description

    Ocean and Land Colour Instrument

    Platforms
    Instrument Types
    Imager
    Organizations
    ESA

    ** When you use our data, please reference the product citation (if available) and acknowledge "NOAA CoastWatch" **