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Full catalog/sentinel-3-olci-1-efr-nrt
sentinel-3-olci-1-efr-nrt·dataset

Full-resolution global color radiances, fast delivery (Copernicus)

Sentinel-3 OLCI Earth Observation Full Resolution (NRT)
land ESA ESA Copernicus active
In plain English

What it measures. Measurements of how much light reaches the satellite across 21 color bands from visible to near-infrared, at 300-meter detail, covering the whole planet about every two days.

How it's made. Made by ESA Copernicus from the Sentinel-3 Ocean and Land Color Instrument, delivered as Level-1 near-real-time top-of-atmosphere radiances.

How & where you'd use it. A raw light-measurement input delivered quickly, feeding products that track ocean color, vegetation, and air conditions soon after capture.

What's measured

300mCopernicusECESAEUEarthGlobalOLCIOL_1_EFR____PT3HSatelliteSentinelSentinel-3

Coverage & cadence

  • Time span2020-04-16 → 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

The Ocean and Land Color Instrument (OLCI) Earth Observation Full Resolution dataset contains top of atmosphere radiances at 21 spectral bands with center wavelengths ranging between 0.4µm and 1.02µm at spatial resolution of 300m with worldwide coverage every ~2 days.

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-1-efr-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.