Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 7
Articles | Volume 30, issue 7
https://doi.org/10.5194/hess-30-1951-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-1951-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 7
Technical note
 | 
13 Apr 2026
Technical note |  | 13 Apr 2026

Technical note: Including non-evaporative fluxes enhances the accuracy of isotope-based soil evaporation estimates

Han Fu, Ming Gao, Huijie Li, Daniele Penna, Junming Liu, Bingcheng Si, and Wenxiu Zou

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Short summary
We present ISONEVA, a new isotope-based framework for estimating soil water evaporation that explicitly accounts for dynamic soil water storage and non-evaporative fluxes. Numerical and field validations demonstrate that ISONEVA substantially improves evaporation estimates compared to traditional steady-state and non-steady-state approaches, and provides a robust basis for assessing long-term average evaporation to precipitation (E/P) ratios.
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