An easy and fairly accurate method for estimating potential evapotranspiration for most midlatitude locations utilizes mean air temperature and daylength.

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Quizplus · Accepted Answer

This statement is true. The method is known as the Hargreaves method and is widely used in the estimation of potential evapotranspiration in midlatitude regions. The method takes into account the daily temperature range, latitude, and daylength to estimate the amount of water that could potentially evaporate or transpire from a surface.

An Easy and Fairly Accurate Method for Estimating Potential Evapotranspiration