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Full catalog/clms_eta_global_300m_10daily_v1
clms_eta_global_300m_10daily_v1·dataset

Global map of water lost from land and plants (Copernicus)

CLMS ETA Global 300m 10-daily V1
land ESA ESA Copernicus active COG
In plain English

What it measures. Estimates evapotranspiration, the water that leaves the land by evaporating from soil and transpiring from plant leaves, along with quality indicators. Several model versions and an ensemble are provided.

How it's made. Produced by ESA Copernicus from the OLCI and SLSTR instruments on the Sentinel-3 satellites, with a fresh estimate every ten days at about 300-metre detail.

How & where you'd use it. Helps with water-resource management, irrigation planning, drought monitoring and understanding the water cycle. This version starts in November 2025.

What's measured

CopernicusCLMSETEvapotranspirationwater cycleglobal10-daily300mSentinel-3OLCISLSTR

Coverage & cadence

  • Time span2025-11-01 → ongoing
  • Spatial extent-179.9999999, -65, 179.9999999, 85
  • FormatsCOG

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 actual evapotranspiration, soil evaporation and canopy transpiration with some quality indicators. Estimates are provided for two evapotranspiration schemes and an Ensemble of models. The 10-daily estimates are available at global scale in the spatial resolution of 300 m from November 2025 to present, derived from Sentinel-3 OLCI and SLSTR data.

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_eta_global_300m_10daily_v1"],   # 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.