What is the temperature change with a period of one day?
The daily variation law of temperature is as follows: the highest temperature in a day appears around 14, and the lowest temperature in a day appears around sunrise. Generally, the temperature is observed four times a day, usually at 2: 00, 8: 00, 14: 00 and 20: 00 Beijing time, and the average temperature of these four times is the daily average temperature.
After noon, although the solar radiation began to weaken, the solar radiation heat obtained on the ground was still more than the heat lost on the ground, and the heat stored on the ground continued to increase until the solar radiation heat began to be less than the heat lost on the ground, that is, when the surplus turned into a loss, the ground temperature reached the highest value.
It takes some time for the ground to transfer heat to the air, so the highest temperature appears around 14. At night, the ground heat is lost and the temperature drops until the heat stored on the ground is minimized before sunrise, so the lowest temperature appears around 5 am. The difference between the highest temperature and the lowest temperature on this day is called the daily range.
weather forecast
Also known as weather forecast, it refers to the use of modern science and technology to predict the state of the earth's atmosphere in a certain place in the future. Since prehistoric times, human beings have begun to predict the weather and arrange their work and life accordingly.
Daily weather forecast mainly uses a large number of collected data (temperature, humidity, wind direction and speed, air pressure, etc.). ), and then use the understanding of atmospheric processes (meteorology) to determine future air changes. Because of the chaos of the atmospheric process and the fact that science has not fully understood the atmospheric process today, there will always be some errors in the weather forecast.