About the Authors

Claude Herzog

claude.herzog@wsl.ch

Affiliations Swiss Federal Research Institute WSL, Birmensdorf, Switzerland, Swiss Federal Institute of Technology Zürich ETH, Zurich, Switzerland

Jan Steffen

Affiliation Swiss Federal Research Institute WSL, Birmensdorf, Switzerland

Elisabeth Graf Pannatier

Affiliation Swiss Federal Research Institute WSL, Birmensdorf, Switzerland

Irka Hajdas

Affiliation Swiss Federal Institute of Technology Zürich ETH, Zurich, Switzerland

Ivano Brunner

Affiliation Swiss Federal Research Institute WSL, Birmensdorf, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IB. Performed the experiments: CH. Analyzed the data: CH. Wrote the paper: CH IB. Vegetation assessment: JS. Volumetric water content data: EGP. 14C measurements: IH .