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

CoastWatch Level-3 Mapped Regions for chlorophyll, Kd490, Rrs665 and Rrs681 (example dataset ~March to June 2019):

Sentinel-3A:  

https://coastwatch.noaa.gov/pub/socd3/coastwatch/products/olci/s3a/L3/netcdf/

Sentinel-3B:  

https://coastwatch.noaa.gov/pub/socd3/coastwatch/products/olci/s3b/L3/netcdf/

 

THREDDS

Link for OLCI Sentinel 3A and Sentinel 3B near real time, global, ocean color (from EUMETSAT native L2)

Top Level Catalog

Sentinel 3A

Hi-res (300 m) global sectors mapped daily merge (216 sectors, AA through RL; see hi-res 300m OLCI sector map )

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

VIIRS-res (750 m) global sectors mapped daily merge (24 sectors to match VIIRS sectors; see 750m OLCI sector map )

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

Global 4 km mapped daily merge (1 file per day)

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

Sentinel 3B

Hi-res (300 m) global sectors mapped daily merge (216 sectors, AA through RL; see hi-res 300m OLCI sector map )

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

VIIRS-res (750 m) global sectors mapped daily merge (24 sectors to match VIIRS sectors; see 750m OLCI sector map)

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

Global 4 km mapped daily merge (1 file per day)

  • Chlorophyll
  • Kd 490
  • Rrs (400 nm, 412 nm, 442 nm, 490 nm, 510 nm, 560 nm, 620 nm, 665 nm, 674 nm, 681 nm, 709 nm, 754 nm, 779 nm)

S-3A/B OLCI Sector maps of 300m and 750m sectors:

Select a sector and the corresponding THREDDS links will display below the 300m sector map.

OLCI_Sectors.png

ALBLCLDLELFLGLHLILJLKLLLMLNLOLPLQLRLAKBKCKDKEKFKGKHKIKJKKKLKMKNKOKPKQKRKAJBJCJDJEJFJGJHJIJJJKJLJMJNJOJPJQJRJAIBICIDIEIFIGIHIIIJIKILIMINIOIPIQIRIAHBHCHDHEHFHGHHHIHJHKHLHMHNHOHPHQHRHAGBGCGDGEGFGGGHGIGJGKGLGMGNGOGPGQGRGAFBFCFDFEFFFGFHFIFJFKFLFMFNFOFPFQFRFAEBECEDEEEFEGEHEIEJEKELEMENEOEPEQEREADBDCDDDEDFDGDHDIDJDKDLDMDNDODPDQDRDACBCCCDCECFCGCHCICJCKCLCMCNCOCPCQCRCABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBAABACADAEAFAGAHAIAJAKALAMANAOAPAQARA

 

VIIRS_sectorMap.png

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ERDDAP

S-3A and S-3B OLCI mapped to 750m Sectors: 

Chlorophyll-a

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 America, 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
OLCI
SLSTR
SRAL
Organizations
ESA
EUMETSAT
Copernicus
Orbital Altitude
814.5 km
Orbital Period
101 minutes
Orbital Inclination
98.65°
Equatorial Crossing Times
10:00 desc

OLCI

Description

Ocean and Land Colour Instrument
Platforms
Sentinel-3
Instrument Types
Imager
Organizations
ESA

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

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