< p > < a href = " //www.hoelymoley.com/q/19151/6031 " >我用< / >湿/干球设置估计湿度、和< a href = " //www.hoelymoley.com/q/19145/6031 " > < / >似乎阿根廷气象服务使用一个在南极。< / p > < p > < a href = " https://en.wikipedia.org/wiki/Hygrometer # Difficulty_of_accurate_humidity_measurement”rel = " noreferrer " >维基百科经济特区< / >:< / p > < blockquote > < p >湿度测量基本计量是更加困难的问题。根据世界气象组织指南”,可实现的精度(湿度测定)表中列出的参考优质仪器操作和维护。在实践中,这些并不容易实现。”...Hygrometers must be calibrated in air, which is a much less effective heat transfer medium than is water, and many types are subject to drift so need regular recalibration. A further difficulty is that most hygrometers sense relative humidity rather than the absolute amount of water present... Question: In practice, how do weather reporting stations measure humidity? Is there a difference between remote locations and those where people visit regularly? Does there tend to be a difference between instruments used in arctic and tropical conditions?