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clms_toc_global_300m_daily_v2·dataset

Daily global surface reflectance for vegetation (Copernicus)

CLMS TOC Global 300m daily V2
land ESA ESA Copernicus active NetCDF
In plain English

What it measures. Records how much sunlight the top of the plant canopy and land surface reflects, a basic optical reading rather than a finished map of any single feature.

How it's made. ESA Copernicus derives it daily at 300-metre resolution from the OLCI instrument on the Sentinel-3 satellites.

How & where you'd use it. This is a foundational input rather than an end product: scientists turn it into vegetation, land-cover, and greenness indicators.

What's measured

CopernicusCLMSTOCTop-of-Canopy Reflectancesurface reflectanceglobaldaily300mSentinel-3OLCISLSTR

Coverage & cadence

  • Time span2018-05-01 → ongoing
  • Spatial extent-179.9999999, -65, 179.9999999, 85
  • FormatsNetCDF

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

Provides top-of-canopy reflectances derived from Sentinel-3/OLCI observations at global scale in the spatial resolution of 300 m on a daily basis.

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=["clms_toc_global_300m_daily_v2"],   # 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.