OLCQCW_I2018287_152928_FE05_closest_chlora_800.png

 

Data are available through the following servers.

Please contact the CoastWatch HelpDesk (coastwatch.info@noaa.gov) to coordinate routine and automated downloads.
Service Resource Locator

HTTPS

Search and Data Access Tools

CoastWatch Data Portal:  Show S3A chlorophyll; Show S3B chlorophyll

L1,L2 Granule Selector Tool for L1, L2 data: Show OLCI

Level-2 Space and Time Search Tool for L2 data : Link

L3 CoastWatch CONUS Regional Data Near Real-time Searches:

THREDDS

3A & 3B

Global NRT

Aggregated View and Per File View for each

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

Sentinel 3A

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

  • 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 sector VIIRS sector map under description tab)

  • 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 CoastWatch hi-res OLCI sector map under description tab)

  • 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 VIIRS sector map under description tab)

  • 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)
FTP

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

 

Please contact the CoastWatch HelpDesk (coastwatch.info@noaa.gov) to coordinate routine and automated downloads.

OLCQCW_I2018287_152928_FE05_closest_chlora_800.png

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 ESAEUMETSAT 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.

SentinelSectors_Fig_small.png
Figure 1.  CoastWatch hi-res OLCI Sentinel-3 sector coordinate map
CW VIIRS sector 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

(♦ - non-government website)

KeyDescription
Platform/Sensor

Sentinel-3A / OLCI

Sentinel-3B / OLCI

Measurement/Products

Ocean Color and derived parameters including: 

remote sensing reflectances, (Rrs(λ) @ 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)

chlorophyll-a concentration

diffuse attenuation coefficient at 490 nm (Kd(490))

Short Name

OLCI Ocean Color

Sample Filename

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

Processing Level

Level-2, native EUMETSAT products

Level-3, CoastWatch generated mapped and composited products (see data access tab for listing)

Spatial Coverage

Global

(CoastWatch generates some CONUS specific products)

Temporal Coverage

Near real-time data

S3A: Level-1 Release 20 October 2016; Level-2 Release 05 July 2017

S3B: Level-1 Release 12 December 2018; Level-2 Release 20 March 2019

Latency

8 hours

Resolution

300 m

Temporal Repeat

Orbital 27 days

Orbital Period

101 minutes

Orbit

Sun-synchronous, altitude 814.5km, inclination 98.65
Equator Crossing Time: 10:00

Data Provider

NOAA CoastWatch courtesy of Copernicus Program

Formats

NetCDF (tar file), HDF, PNG

Keywords

OLCI, Sentinel-3A, Sentinel-3B, Copernicus, EUMETSAT, ocean color, chlorophyll

Keywords (Beta)