What is the lowest temperature in Tangshan since records began?

The temperature observed and recorded by the -25.2℃

meteorological station on January 5, 21 was measured by a thermometer placed in a louver. The height of the thermometer is 1.5 meters above the ground. Centigrade scale is generally used to measure the temperature, which is recorded as "℃" and pronounced as "Celsius".

the observation of temperature is usually carried out four times a day: at 8: , 14: , 2: and 2: Beijing time. According to the local conditions and needs, the number and time of observation may not be completely consistent.

Extended information:

In meteorology, the physical quantity indicating the degree of air heat and cold is called air temperature, which is abbreviated as air temperature. The international standard unit of temperature measurement is Celsius (℃).

The air temperature mentioned in the weather forecast refers to the air temperature measured in the open air without direct sunlight (generally measured in a louver). The highest temperature is the highest temperature in a day, which usually appears at 14-15 o'clock; The lowest temperature is the lowest temperature in a day, usually before sunrise.

The temperature mentioned in the weather forecast is measured on the thermometer in the louver box 1.5 meters above the ground in the observation field. Because the thermometer keeps good ventilation and avoids direct sunlight, it is representative.

The difference of temperature is one of the main factors that cause the difference between natural landscape and our living environment, which is closely related to our life.

air temperature records can characterize the thermal characteristics of a place, which is indispensable both in theoretical research and in the application of national defense and economic construction. Temperature is one of the routine elements to be measured in ground meteorological observation.

the temperature has a fixed temperature (the basic station observes it four times a day, with four hours of 2, 8, 14 and 2 respectively; According to the actual situation, some stations observe three times a day, which are 8, 14 and 2 hours respectively. The reference station observes 24 times a day), and the daily maximum and daily minimum temperature.

Usually people use the value of atmospheric temperature to reflect the degree of heat and cold of the atmosphere. Centigrade scale is used in China, expressed in℃ and read as℃.

Baidu Encyclopedia-Observation of Temperature

Baidu Encyclopedia-Temperature