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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Potential evaporation (Ep) is the amount of water an ecosystem would consume if it were not limited by water availability or other stress factors. In this study, we compared several methods to estimate Ep using a global dataset of 107 FLUXNET sites. A simple radiation-driven method calibrated per biome consistently outperformed more complex approaches and makes a suitable tool to investigate the impact of water use and demand, drought severity and biome productivity.
HESS | Articles | Volume 23, issue 2
Hydrol. Earth Syst. Sci., 23, 925–948, 2019
https://doi.org/10.5194/hess-23-925-2019
Hydrol. Earth Syst. Sci., 23, 925–948, 2019
https://doi.org/10.5194/hess-23-925-2019

Research article 18 Feb 2019

Research article | 18 Feb 2019

Potential evaporation at eddy-covariance sites across the globe

Wouter H. Maes et al.

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Cited articles

Abtew, W.: Evapotranspiration measurements and modelling for three wetland systems in South Florida, J. Am. Water Resour. Assoc., 32, 465–473, https://doi.org/10.1111/j.1752-1688.1996.tb04044.x, 1996. 
Agam, N., Kustas, W. P., Anderson, M. C., Norman, J. M., Colaizzi, P. D., Howell, T. A., Prueger, J. H., Meyers, T. P., and Wilson, T. B.: Application of the Priestley–Taylor Approach in a Two-Source Surface Energy Balance Model, J. Hydrometeorol., 11, 185–198, https://doi.org/10.1175/2009jhm1124.1, 2010. 
Allen, R. G., Pereira, L. S., Raes, D., and Smith, M.: Crop Evapotranspiration – guidelines for computing crop water requirements, FAO Irrigation and Drainage Paper No. 56, Food and Agriculture Organization of the United Nations (FAO), Rome, Italy, 1998. 
Aminzadeh, M., Roderick, M. L., and Or, D.: A generalized complementary relationship between actual and potential evaporation defined by a reference surface temperature, Water Resour. Res., 52, 385–406, https://doi.org/10.1002/2015WR017969, 2016. 
Anderson, M. C., Norman, J. M., Diak, G. R., Kustas, W. P., and Mecikalski, J. R.: A two-source time-integrated model for estimating surface fluxes using thermal infrared remote sensing, Remote Sens.f Environ., 60, 195–216, 1997. 
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Short summary
Potential evaporation (Ep) is the amount of water an ecosystem would consume if it were not limited by water availability or other stress factors. In this study, we compared several methods to estimate Ep using a global dataset of 107 FLUXNET sites. A simple radiation-driven method calibrated per biome consistently outperformed more complex approaches and makes a suitable tool to investigate the impact of water use and demand, drought severity and biome productivity.
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