Simultaneous measurement of atmospheric moisture and temperature in the presence of airborne particulates over an extended region using a single sensor is very important for the prediction of fog in an open environment. Here, we have developed an ultrasonic technique to measure relative humidity and temperature of open-air containing suspended particulate matter in a controlled environment. We achieved an accuracy within ±0.9 K for a temperature range of 297–302 K, and within ±2.68% for relative humidity in the range of 60%–100%. We also characterized laboratory-generated fog using ultrasound and found our results to be in agreement with the conventional optical method. At higher concentrations, our technique appears to be a better means of characterizing atmospheric moisture content compared to light.

中文翻译：

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使用超声波技术同时测量悬浮颗粒存在下的大气湿度和温度

使用单个传感器同时测量扩展区域内存在空气中颗粒物时的大气湿度和温度，对于预测开放环境中的雾非常重要。在这里，我们已经开发了一种超声波技术，可以在受控环境中测量包含悬浮颗粒物的露天场所的相对湿度和温度。在297–302 K的温度范围内，我们的精度在±0.9 K之内，而在60％–100％的相对湿度下，我们的精度在±2.68％之内。我们还使用超声对实验室产生的雾进行了表征，发现我们的结果与常规光学方法一致。在较高浓度下，与光相比，我们的技术似乎是表征大气水分含量的更好方法。