Towards a global actual evapotranspiration product for the Copernicus Land Monitoring Service

Guzinski, Radoslaw; Nieto, Héctor; Barrios, José Miguel; Ghariani, Walid; Gellens-Meulenberghs, Francoise; De Pue, Jan; Lacaze, Roselyne

doi:10.5194/hess-30-5593-2026

Articles | Volume 30, issue 17

https://doi.org/10.5194/hess-30-5593-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-30-5593-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 30, issue 17

Research article

|

08 Sep 2026

Research article |

| 08 Sep 2026

Towards a global actual evapotranspiration product for the Copernicus Land Monitoring Service

Radoslaw Guzinski, Héctor Nieto, José Miguel Barrios, Walid Ghariani, Francoise Gellens-Meulenberghs, Jan De Pue, and Roselyne Lacaze

Data sets

Evapotranspiration 2025-present (raster 300 m), global, 10-daily - version 1 Copernicus Land Monitoring Service https://doi.org/10.2909/861003ed-2082-41ea-9eb5-b068ca63b168

Model code and software

pyPro4SAIL: Vectorized vesions of the Prospect5 and 4SAIL Radiative Transfer Models for simulating the transmission of radiation in leaves and canopies (Version v1.2) Hector Nieto https://doi.org/10.5281/zenodo.15094926

meteo_utils: Python module for processing gridded GRIB meteorological data (Version v2.1.1) Hector Nieto et al. https://doi.org/10.5281/zenodo.15095543

pyTSEB: A python Two Source Energy Balance model for estimation of evapotranspiration with remote sensing data (Version v2.3) Hector Nieto et al. https://doi.org/10.5281/zenodo.15094917

radosuav/pyDMS: v1.3_zenodo (Version v1.3_zenodo) Radoslaw Guzinski et al. https://doi.org/10.5281/zenodo.22237789

pyWaPOR Bert Coerver and FAO WaPOR Team https://github.com/un-fao/fao-wetl-pywapor

CLMS ETA: Copernicus Adaptation of pyWaPOR Radoslaw Guzinski and DHI https://github.com/DHI-GRAS/pywapor/releases/tag/v1.0-clms_eta

Short summary

We present the design of an actual evapotranspiration product which joined the Copernicus Land Monitoring Service portfolio in December 2025. The product relies on free and open data and advanced modelling methods and has global coverage with a 300 m pixel resolution. A prototype dataset was compared against measurements from 206 geographically distributed stations, achieving good results. Such product will find multiple uses, including in water resources management and food security fields.