Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 29, issue 18
Articles | Volume 29, issue 18
https://doi.org/10.5194/hess-29-4607-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-29-4607-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 29, issue 18
Research article
 | 
24 Sep 2025
Research article |  | 24 Sep 2025

A novel method for correcting water budget components and reducing their uncertainties by optimally distributing the imbalance residual without full closure

Zengliang Luo, Hanjia Fu, Quanxi Shao, Wenwen Dong, Xi Chen, Xiangyi Ding, Lunche Wang, Xihui Gu, Ranjan Sarukkalige, Heqing Huang, and Huan Li

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Short summary
Existing correction methods may introduce large errors, and more seriously cause unrealistic negative values in P, ET and Q in up to 10 % of cases. A novel IWE-Res method is proposed to improve the accuracy and consistency of corrected satellite-based water budget component data. In most river basins (except cold regions), the best correction is achieved by adjusting 40 % to 90 % of the total water imbalance error.
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