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Title (Primary) Attribution of global evapotranspiration trends based on the Budyko framework
Author Li, S.; Wang, G.; Zhu, C.; Lu, J.; Ullah, W.; Hagan, D.F.T.; Kattel, G.; Peng, J.
Journal Hydrology and Earth System Sciences
Year 2022
Department RS
Volume 26
Issue 13
Page From 3691
Page To 3707
Language englisch
Topic T5 Future Landscapes
Supplements https://hess.copernicus.org/articles/26/3691/2022/hess-26-3691-2022-supplement.pdf
Abstract Actual evapotranspiration (ET) is an essential variable in the hydrological process, linking carbon, water, and energy cycles. Global ET has significantly changed in the warming climate. Although the increasing vapor pressure deficit (VPD) enhances atmospheric water demand due to global warming, it remains unclear how the dynamics of ET are affected. In this study, using multiple datasets, we disentangled the relative contributions of precipitation, net radiation, air temperature (T1), VPD, and wind speed on the annual ET linear trend using an advanced separation method that considers the Budyko framework. We found that the precipitation variability dominantly controls global ET in the dry climates, while the net radiation has substantial control over ET in the tropical regions, and VPD impacts ET trends in the 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.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=26419
Li, S., Wang, G., Zhu, C., Lu, J., Ullah, W., Hagan, D.F.T., Kattel, G., Peng, J. (2022):
Attribution of global evapotranspiration trends based on the Budyko framework
Hydrol. Earth Syst. Sci. 26 (13), 3691 - 3707