What is the weather forecast these days?
The Municipal Meteorological Observatory released at 6: 00 on the 20th: there was light fog this morning, cloudy and cloudy with sporadic light rain during the day, and the north wind was second or third grade, with the highest temperature of11℃; Cloudy at night, with sporadic light rain, the north wind is two or three, and the lowest temperature is 4 C. There is light fog in the morning, and visibility is poor. Pay attention to traffic safety when driving; There was weak rainfall from this afternoon to night, the temperature dropped and the body felt cold. Please take rain gear when you go out and pay attention to adding clothes to keep warm.
Brief introduction of weather forecast
Weather forecast, also known as meteorological forecast (measurement), 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 (such as agricultural production and military operations). ).
Today's weather forecast is mainly based on the collection of a large number of 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.
The satellite cloud image of China Central Meteorological Observatory was taken from Fengyun-1 and other meteorological satellites. Using satellite cloud images for analysis can improve the accuracy of weather forecast. Weather forecast is usually divided into three types: short-term weather forecast (2 ~ 3 days), medium-term weather forecast (4 ~ 9 days) and long-term weather forecast (10 ~ 15 days or more). China CCTV mainly broadcasts short-term weather forecast every day.