How is the temperature measured?

The temperature of the atmosphere is called air temperature for short, and people usually use the temperature value to reflect the degree of heat and cold of the atmosphere. China uses centigrade scale, that is,℃, which is pronounced℃. The temperature mentioned in the public weather forecast was measured by a thermometer in a louver with a height of 1.5 m in an observation field covered with turf. The average temperature refers to the arithmetic average of the temperature values observed in a certain period of time. According to the different calculation time, there can be the average temperature of a certain day, month and year. The daily maximum temperature is the highest temperature in a day, generally appearing at 14 ~ 15, and the lowest temperature generally appears at 5 ~ 6 in the morning. The temperature items of ground meteorological observation include conventional temperature, daily maximum temperature and daily minimum temperature. Meteorological stations equipped with thermometers shall continuously record the temperature in℃, accurate to one decimal place. The distribution of air temperature is usually represented by an isotherm diagram. The so-called isotherm is the connecting line between points with the same temperature on the ground. The different arrangement of isotherms reflects different temperature distribution characteristics. If the isotherm is sparse, it means that the temperature is not much different from place to place. There are three main factors that affect the temperature distribution, namely latitude, land and sea and height.