Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 19
Articles | Volume 30, issue 19
https://doi.org/10.5194/hess-30-6159-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-6159-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 19
Research article
 | 
02 Oct 2026
Research article |  | 02 Oct 2026

Improving large-scale river routing models with ESA long-term CCI discharge data assimilation: advancing accuracy for climate studies

Malak Sadki, Gaëtan Noual, Simon Munier, Vanessa Pedinotti, Kaushlendra Verma, Clément Albergel, Sylvain Biancamaria, and Alice Andral

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Short summary
his study explores how 20 years of European Space Agency Climate Change Initiative discharge products improve large-scale hydrological simulations through data assimilation. Tests in two contrasting models across Niger and Congo basins show that temporally dense discharge data reduces bias and improves internal variability. Although product quality, sampling, and basin processes control gain reliability, the findings support these datasets' value in refining models for climate studies.
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