Articles | Volume 26, issue 13
https://doi.org/10.5194/hess-26-3691-2022
https://doi.org/10.5194/hess-26-3691-2022
Research article
 | 
15 Jul 2022
Research article |  | 15 Jul 2022

Attribution of global evapotranspiration trends based on the Budyko framework

Shijie Li, Guojie Wang, Chenxia Zhu, Jiao Lu, Waheed Ullah, Daniel Fiifi Tawia Hagan, Giri Kattel, and Jian Peng

Data sets

GLEAM v3: satellite-based land evaporation and root-zone soil moisture (https://www.gleam.eu/) Brecht Martens, Diego G. Miralles, Hans Lievens, Robin van der Schalie, Richard A. M. de Jeu, Diego Fernández-Prieto, Hylke E. Beck, Wouter A. Dorigo, and Niko E. C. Verhoest https://doi.org/10.5194/gmd-10-1903-2017

A global water resources ensemble of hydrological models: the eartH2Observe Tier-1 dataset (http://www.earth2observe.eu/) Jaap Schellekens, Emanuel Dutra, Alberto Martínez-de la Torre, Gianpaolo Balsamo, Albert van Dijk, Frederiek Sperna Weiland, Marie Minvielle, Jean-Christophe Calvet, Bertrand Decharme, Stephanie Eisner, Gabriel Fink, Martina Flörke, Stefanie Peßenteiner, Rens van Beek, Jan Polcher, Hylke Beck, René Orth, Ben Calton, Sophia Burke, Wouter Dorigo, and Graham P. Weedon https://doi.org/10.5194/essd-9-389-2017

The global land data assimilation system (https://disc.gsfc.nasa.gov/datasets?keywords=GLDAS) M. Rodell, P. R. Houser, U. Jambor, J. Gottschalck, K. Mitchell, C.-J. Meng, K. Arsenault, B. Cosgrove, J. Radakovich, M. Bosilovich, J. K. Entin, J. P. Walker, D. Lohmann, and D. Toll https://doi.org/10.1175/BAMS-85-3-381

Assessment and enhancement of MERRA land surface hydrology estimates (https://disc.gsfc.nasa.gov/datasets?keywords=merra-land&page=1) Rolf H. Reichle, Randal D. Koster, Gabriëlle J. M. De Lannoy, Barton A. Forman, Qing Liu, Sarith P. P. Mahanama, and Ally Touré https://doi.org/10.1175/JCLI-D-10-05033.1

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Short summary
We found that the precipitation variability dominantly controls global evapotranspiration (ET) in dry climates, while the net radiation has substantial control over ET in the tropical regions, and vapor pressure deficit (VPD) impacts ET trends in boreal mid-latitude climate. The critical role of VPD in controlling ET trends is particularly emphasized due to its influence in controlling the carbon–water–energy cycle.