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2019 | OriginalPaper | Chapter

Micrometeorological Methods to Determine Evapotranspiration

Authors : Shaomin Liu, Ziwei Xu

Published in: Observation and Measurement of Ecohydrological Processes

Publisher: Springer Berlin Heidelberg

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Abstract

Evapotranspiration (ET) is a combination of two distinct processes, soil or water evaporation (E) and plant transpiration (T), that occur between plants and the atmosphere, soil and the atmosphere, and water and the atmosphere. ET is also an important link between the terrestrial ecosystem and hydrological processes. In this chapter, we focus primarily on ET measurements using micrometeorological methods. Three typical ET measurement techniques, namely, the Bowen ratio-energy balance, eddy covariance, and scintillometer methods, which have a long history and are used widely throughout the world, are introduced. A brief review of their theoretical background, installation and maintenance, data processing and quality control, and footprint is presented, in addition to a brief summary of the advantages and disadvantages of each method. Additionally, ET measurements at observational networks and intensive experiments are presented. The ET measurement methods differ in observational theory, temporal–spatial scales, and precision. Researchers can select a suitable method according to their research objectives.

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Title: Micrometeorological Methods to Determine Evapotranspiration
Authors: Shaomin Liu
Ziwei Xu
Publisher: Springer Berlin Heidelberg
Book: Observation and Measurement of Ecohydrological Processes
Print ISBN: 978-3-662-48296-4

Electronic ISBN: 978-3-662-48297-1

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-662-48297-1_7