Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Calibration‐Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally

Ning Ma, József Szilágyi, Yongqiang Zhang

Water Resources Research · 2021

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Summary

Abstract While large‐scale terrestrial evapotranspiration (ET) information is essential for our understanding of the Earth's water and energy cycles, substantial differences exist in current global ET products due partly to uncertainties in soil‐ and vegetation‐related parameters and/or precipitation forcing. Here a calibration‐free complementary relationship (CR) model, driven purely by routine meteorological forcing (air and dew‐point temperature, wind speed, and net radiation), mainly from ERA5, was employed to estimate global ET rates during 1982–2016. Modeled ET agrees favorably with (a) monthly eddy‐covariance measurements of 129 global FLUXNET sites, and; (b) water‐balance‐derived ET of 52 basins at the multiyear mean and annual scales. Additional evaluations demonstrate that the CR

Source type
Peer-reviewed study
DOI
10.1029/2021wr029691
Catalogue ID
SNmokeh5dw-zhujty
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