In time, several models with different complexity have been proposed to predict the retention performances of a green roof. In the current study three conceptual models of increasing complexity in descriptive details, are calibrated and compared to experimental data. The proposed approaches consist of daily scale hydrological models, based on water balance equations, where the main processes and variables accounted for are the precipitation input, the evapotranspiration losses, and the maximum water storage capacity. Model detail increase is achieved moving from an approach using potential evapotranspiration and constant storage threshold to an approach using actual evapotranspiration and a variable storage threshold. The main findings confirm on one side the role played by evapotranspiration modeling and, on the other side, the good accuracy achieved, in a minimal calibration requirement approach, through the modeling of basic and elemental processes.

中文翻译：

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日尺度绿化屋顶水文概念模拟中的模型详细信息，参数化和精度

随着时间的推移，已经提出了几种具有不同复杂度的模型来预测绿色屋顶的保持性能。在当前的研究中，对三个描述性细节不断增加的概念模型进行了校准，并与实验数据进行了比较。拟议的方法包括基于水平衡方程式的日尺度水文模型，其中的主要过程和变量是降水输入，蒸散损失和最大储水量。从使用潜在蒸散量和恒定存储阈值的方法过渡到使用实际蒸散量和可变存储阈值的方法，可以实现模型详细信息的增加。主要发现一方面证实了蒸散模型的作用，另一方面证实了