Partial energy balance closure of eddy covariance evaporation measurements using concurrent lysimeter observations over grassland

Widmoser, Peter; Michel, Dominik

doi:https://doi.org/10.5194/hess-25-1151-2021

Articles | Volume 25, issue 3

https://doi.org/10.5194/hess-25-1151-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-25-1151-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 3

Research article

|

05 Mar 2021

Research article |

| 05 Mar 2021

Partial energy balance closure of eddy covariance evaporation measurements using concurrent lysimeter observations over grassland

Peter Widmoser and Dominik Michel

Data sets

Eddy-covariance and lysimeter data of evapotranspiration at Rietholzbach (Widmoser & Michel 2020, HESS) Dominik Michel, Sonia I. Seneviratne, and Peter Widmoser https://doi.org/10.3929/ethz-b-000420733

Evapotranspiration data of the TERENO sites Graswang and Fendt for 2013 and 2014 measured by eddy-covariance and lysimeters Matthias Mauder, Ralf Kiese, and Peter Widmoser https://doi.org/10.5281/zenodo.3957208

Lysimeters data from Windmoser and Michel 2020 Peter Widmoser, Oscar Perez-Priego, Tarek S. El-Madany, Arnaud Carrara, Olaf Kolle, Martin Hertel, Ramon López-Jimenez, Markus Reichstein, and Mirco Migliavacca https://doi.org/10.5281/zenodo.3964082

Short summary

With respect to ongoing discussions about the causes of energy imbalance, a method for closing the latent heat flux gap based on lysimeter measurements is assessed at four measurement stations over grassland in humid and semiarid climates. The applied partial closure yields excellent adjustments of eddy covariance data as compared to results found in the literature. The method also allows a distinction between systematic and random deviation of eddy covariance and lysimeter measurements.