At what temperature will people feel cold?
Air temperature, air temperature. China is expressed in degrees Celsius.
In meteorology, the physical quantity representing the degree of air heat and cold is called temperature, which is referred to as temperature for short. The international standard unit for temperature measurement is Celsius (℃).
The temperature mentioned in the weather forecast refers to the air temperature measured in the open air without direct sunlight (usually measured by blinds). The highest temperature is the highest temperature in a day, generally appearing in14-15; The lowest temperature is the lowest temperature in a day, usually before sunrise. China uses centigrade scale, which is expressed in degrees Celsius. Generally, it is observed four times a day, at 02: 08: 00,/kloc-0: 4: 00 and 20: 00: 00 respectively. According to the actual situation, some stations observe three times a day, at 08: 00, 14 and 20: 00 respectively.
The temperature mentioned in the public weather forecast is measured at the observation field with turf and the thermometer in the louver box 1.5 meters above the ground. The thermometer is representative because it keeps good ventilation and avoids direct sunlight. 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.
Temperature records can characterize the thermal characteristics of a place, which is indispensable in both theoretical research and the application of national defense and economic construction. Temperature is one of the conventional measurement elements in ground meteorological observation. The temperature includes conventional temperature (4 times a day at the basic station and 24 times a day at the reference station), daily maximum and daily minimum temperature. The units of temperature are expressed in degrees Celsius (℃), and some of them are expressed in degrees Fahrenheit (F), all of which are expressed by one decimal place, and negative values mean zero.