DEVELOPMENT OF IOT DEVICES FOR VEHICLE-BASED METEOROLOGICAL OBSERVATION

Abstract

 In recent years, the harmful impact of the heat island phenomena and torrential rains are becoming apparent in cites, thereby increasing the demand of the dense ground meteorological data. In this research, we developed an IoT device that can measure temperature, humidity, wind direction and speed, and CO concentration, and transmit data in real time. The prototype IoT device was developed and installed in vehicles to compare its measurements with stationary observations. The results confirmed that while there were influences of solar heating and sensor biases during stationary observations, the IoT device consistently provided reliable meteorological measurements (nighttime air temperature RMSE = 0.55 ℃). During mobile observations, the device revealed higher temperatures along major roadways, which were attributed to localized atmospheric heating from vehicular exhaust emissions, as indicated by the newly employed gas sensor, as well as high sky view factor.