Articles | Volume 25, issue 8
https://doi.org/10.5194/hess-25-4417-2021
https://doi.org/10.5194/hess-25-4417-2021
Research article
 | 
13 Aug 2021
Research article |  | 13 Aug 2021

The accuracy of temporal upscaling of instantaneous evapotranspiration to daily values with seven upscaling methods

Zhaofei Liu

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Latest update: 13 Dec 2024
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Short summary
Instantaneous evapotranspiration (ET), which is detected by the remote sensing technique, needs to be upscaled to daily values in order to practical applications. The accuracy of seven upscaling methods is evaluated by using global observations. The sine function and the evaporative fraction method using extraterrestrial solar irradiance are recommended. Although every upscaling scheme has high accuracy at most sites, it is less accurate at tropical rainforest and tropical monsoon sites.