Articles | Volume 23, issue 15
https://doi.org/10.5194/bg-23-5313-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5313-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Reviews and syntheses
| Highlight paper
| 
03 Aug 2026
Reviews and syntheses | Highlight paper |
| 03 Aug 2026
| 03 Aug 2026
Reviews and syntheses: Eddy covariance-based evapotranspiration partitioning
School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
Claudia Wagner-Riddle
School of Environmental Sciences, University of Guelph, Guelph, Ontario, Canada
Elke Eichelmann
School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
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Alireza Saeedi, Maria Martinez Mendoza, Eric Scott Krayenhoff, James Voogt, Andrea Zonato, Sylvie Leroyer, and Claudia Wagner-Riddle
EGUsphere, https://doi.org/10.5194/egusphere-2026-984, https://doi.org/10.5194/egusphere-2026-984, 2026
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
Short summary
Short summary
Green roofs can help cool cities, but models must represent how heat and water move through soil and plants correctly. We improved the green roof part of the WRF multi-layer weather model by adding more realistic descriptions of evaporation, heat storage, and plant water uptake. When tested against real measurements from a roof in London, Ontario, Canada, the updated model more accurately matched observed ground heat and latent heat fluxes.
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Editorial statement
Distinction between transpiration and other sources for the evaporation of liquid water from vegetated land surfaces is important for understanding the control mechanisms of evaporation, for plant physiological interpretation, and for testing hydrological models. A number of approaches to partition eddy covariance total evaporation measurements into transpiration and other water vapour fluxes have recently been published. This review gives a timely overview over current partitioning approaches, examines where these approaches were applied and how results comply with independent information. Important conclusions on the robustness of the approaches in relation to the ecosystem types are provided, which is an excellent basis for choosing between existing approaches and for new developments.
Distinction between transpiration and other sources for the evaporation of liquid water from...
Short summary
It is important to understand how much water is lost from plant processes to better understand ecosystem dynamics and the global water cycle. This review summarizes methods developed to partition plant water loss from total ecosystem water loss measurements. Eleven independent methods were identified, each reliant on various ecosystem assumptions. The methods were applied across 129 independent studies, reporting that globally, plant water loss accounts for 57 % of total ecosystem water loss.
It is important to understand how much water is lost from plant processes to better understand...
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