Land surface properties, for example, surface albedo, fractional vegetation cover, and land surface. Purchase evapotranspiration from plant communities, volume 1st edition. Evapotranspiration et is an important component of the water cycle and is composed of. Evapotranspiration is the combination of transpiration, the release of water through stomata. Evapotranspiration estimation methods in hydrological models. Potential reference evapotranspiration and evaporation. We then compare our results from the experiment with calculated values for the evaporation over the sea. The term potential evapotranspiration must be defined when we talk of evapotranspiration. Evaporation abstract in the first part of this experiment, the relationship between wind speed and evaporation is investigated. Evapotranspiration definition is loss of water from the soil both by evaporation and by transpiration from the plants growing thereon. Evapotranspiration et is the sum of evaporation and plant transpiration from the earths land. Evapotranspiration definition of evapotranspiration at. Potential evapotranspiration an overview sciencedirect.
Evapotranspiration definition, the process of transferring moisture from the earth to the atmosphere by evaporation of water and transpiration from plants. You can print the quiz as a worksheet and use it for studying. Pdf past research on evapotranspiration has provided sound theoretical. Chapters concerning the calculation of the reference crop evapotranspiration et o. Evapotranspiration, loss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plants growing on it. The concept of potential evapotranspiration was put forth by thornthwaite 1948 and penman 1948. You can download python free of any charge from the following. Evapotranspiration definition of evapotranspiration by.
This chapter introduces the user to the need to standardize one method to compute et o from meteorological data. This article provides a focused survey of progress in crop evapotranspiration et measurement and. The fao penmanmonteith method was developed by defining the reference crop as a. Since climate change will impact on soil water balance that leads to change in evaporation and plant transpiration. An update for the definition of reference evapotranspiration. We measure the evaporation under idealized conditions using a small wind tunnel. The estimate of pet is greatly influenced by the definition of the reference evapotranspiration, according to allen, pereira, rase, and smith 1998, which can be defined as the rate of. Test your understanding of evapotranspiration by completing this interactive quiz. Factors that affect the rate of evapotranspiration include the amount of solar radiation, atmospheric vapor pressure, temperature, wind, and soil moisture.
The typical plant, including any found in a landscape, absorbs water from the soil through its roots. Evapotranspiration from plant communities, volume 1st. Evapotranspiration an overview sciencedirect topics. Kirkham, in principles of soil and plant water relations, 2005. This energy, known as the latent heat of vaporization l, is a function of the water temperature. The chapter uses the definition of rosenberg, noting that his definition is similar to that of penman. Remote sensing and evapotranspiration mapping futurewater. Concept and consequence of evapotranspiration for sustainable. Different evapotranspiration calculation methods are used depending on the.
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