Earth Data School
About
Full catalog/sentinel-3-olci-2-wrr-nrt
sentinel-3-olci-2-wrr-nrt·dataset

Coarse ocean color products, fast delivery (Copernicus)

Sentinel-3 OLCI Water Reduced Resolution (NRT)
land ESA ESA Copernicus active
In plain English

What it measures. Ocean color and water-leaving reflectance measurements at a broader roughly 1.2-km resolution, indicating ocean biology and clarity over wide areas.

How it's made. Made by ESA Copernicus from the Sentinel-3 Ocean and Land Color Instrument, processed to Level-2 reduced-resolution water products in near-real-time.

How & where you'd use it. Useful for monitoring large ocean regions and basin-wide patterns of plankton and water conditions quickly.

What's measured

1200mCopernicusECESAEUGlobalOLCIOL_2_WRR____OceanPT3HSatelliteSentinelSentinel-3Water

Coverage & cadence

  • Time span2017-11-01 → ongoing
  • Spatial extent-180, -90, 180, 90

What you can do with it

  • Track deforestation, fire scars and land-cover change
  • Monitor crop and vegetation health (NDVI/EVI)
  • Map how built-up vs. green an area is over time
Official description

This collection provides Sentinel-3 OLCI Level-2 Water Reduced Resolution products containing data on water-leaving reflectance, ocean color, and more.

Get the data

copernicus_access.py
# ESA Copernicus Data Space — open STAC API (free account)
from pystac_client import Client

cat = Client.open("https://stac.dataspace.copernicus.eu/v1")
search = cat.search(
    collections=["sentinel-3-olci-2-wrr-nrt"],   # add _cog or _nc for a format variant
    bbox=(-10, 35, 30, 60),             # your area (W,S,E,N)
    datetime="2024-01-01/2024-12-31",
)
items = list(search.items())            # then read assets with rioxarray / xarray
Browsing the Copernicus STAC is open; downloading bytes needs a free Copernicus Data Space account.