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首页> 外文期刊>Acta Horticulturae >Evapotranspiration: measuring and modeling.
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Evapotranspiration: measuring and modeling.

机译:蒸散量:测量和建模。

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摘要

Evapotranspiration (ET) is a key component of the hydrological budget. Direct ET measurements are difficult, except by residual hydrological balance, lysimetry or micrometeorological methods (which require extensive fetch). Other estimation methods are actually simple models, such as using reference ET estimates and then adjusting to actual ET using crop or ecosystem coefficients. Thornthwaite, Hargreaves, and Penman-Monteith reference ET estimates require meteorological data, and in addition a crop coefficient. Energy budget residuals based on eddy-covariance, surface renewal, and other micrometeorological techniques are some of the more complicated, indirect or inferential methods. More complicated models range from bulk transfer paradigms to advanced higher-order closure or Lagrangian descriptions of turbulent exchange. These methods are discussed, including the advantages and limitations expected for each method. Recommendations are given on some cutting edge as well as conventional methods.
机译:蒸散量(ET)是水文预算的重要组成部分。除残留的水文平衡,溶度法或微气象方法(需要大量获取)外,直接进行ET测量非常困难。其他估算方法实际上是简单的模型,例如使用参考ET估算,然后使用作物或生态系统系数调整为实际ET。 Thornthwaite,Hargreaves和Penman-Monteith参考ET估算需要气象数据,此外还需要作物系数。基于涡度协方差,表面更新和其他微气象技术的能源预算残差是一些更复杂,间接或推论的方法。更复杂的模型包括从批量转移范式到高级的高阶封闭或湍流交换的拉格朗日描述。讨论了这些方法,包括每种方法预期的优点和局限性。给出了一些最前沿的建议以及常规方法。

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