Raw heat-glow and surface-colour images, fast, from ESA's Sentinel-3 SLSTR (1 km detail)
What it measures. Brightness temperatures and radiances across the globe, showing how warm surfaces are and how much energy they emit and reflect, at about 500-meter detail for reflective bands and 1-km for thermal bands.
How it's made. Made by ESA Copernicus from the Sentinel-3 Sea and Land Surface Temperature Radiometer, delivered as Level-1 near-real-time radiances and brightness temperatures.
How & where you'd use it. Used to monitor land and sea surface temperatures, support climate studies, and detect heat anomalies.
What's measured
Coverage & cadence
- Time span2016-04-19 → 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 Copernicus Sentinel-3 SLSTR RBT products provide global brightness temperatures and radiances with a spatial resolution of 500 meters for reflectance bands and 1 kilometer for thermal infrared bands, useful for environmental monitoring and climate studies.
Get the data
# 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-sl-1-rbt-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.
Official links
- Open data source Copernicus STAC