Data for: Multiple-globe thermometer for measuring the air temperature without an aspirated radiation shield
Description
This dataset is the original data of the field experiment conducted in the paper “Multiple-globe thermometer for measuring the air temperature without an aspirated radiation shield” by Maruyama. The dataset includes meteorological data of the weather station in the Yawara rice field, temperature data of the standard thermometer, and temperature data of the developed thermometer. The temperature data of the developed thermometer include temperatures of the five globes with different diameters of 0.25, 0.5, 1, 2 and 4 mm. The diameter of the smallest globe in this experiment slightly deviated from 0.25 mm owing to the hand-processing of thermocouples, and the actual diameter was 0.28 mm. Ten-minute data are average values of the temperature measured every 10 s for 10 min. One-minute data are raw values of the temperature sampled every 1 min. One-hour data are the meteorological data of the weather station. A calculation sample containing exact formula and simple formula for obtaining the air temperature by the five-globe thermometer and three-globe thermometer are also included. Symbols in the dataset denote the following elements. Tair: Air temperature observed at the weather station (°C) RH: Relative humidity observed at the weather station (%) U: Wind speed observed at the weather station (m/s) Rs: Solar radiation observed at the weather station (W/m2) STD: Air temperature observed using a standard thermometer (°C) T1: Temperature of the globe with a 0.25-mm diameter (°C) T2: Temperature of the globe with a 0.5-mm diameter (°C) T3: Temperature of the globe with a 1-mm diameter (°C) T4: Temperature of the globe with a 2-mm diameter (°C) T5: Temperature of the globe with a 4-mm diameter (°C) 5GT: Air temperature obtained by the five-globe thermometer (°C) 3GT: Air temperature obtained by the three-globe thermometer (°C) 5GTs: Air temperature obtained by the five-globe thermometer using simple formula (°C) 3GTs: Air temperature obtained by the three-globe thermometer using simple formula (°C) Simple formulas are based on the Eq. (5) in the paper, and the air temperature Ta can be calculated as Ta = 0.6907 T1 + 0.5279 T2 + 0.2977 T3 - 0.0279 T4 - 0.4884 T5, (for the five-globe thermometer) Ta = T1 + 0.5 (T3 - T5), (for the three-globe thermometer)