How did the weather forecast come from?

It is to use modern science and technology to predict the state of the earth's atmosphere somewhere in the future.

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). CCTV mainly broadcasts short-term weather forecast every day.

The accuracy of weather forecast with extended data can reach 80%.

The accuracy of three-day forecast can reach 70% to 80% internationally, and it can be higher than 80% in a certain area, such as South China. At the same time, the validity of international weather forecast has been increased from the early 1-3 days to 5-7 days.

"The weather forecast can't reach' ten reports and nine accuracy' or even' ten reports and ten accuracy'." Zeng Qingcun said that the weather is accidental, it is not in the artificial laboratory, nor is it artificially controlled, but the forecast will always be biased.

Quite accurate forecast helped China achieve zero death of several landing typhoons. Zeng Qingcun said: "Now, we have been able to firmly control the typhoon."

The difference between the 24-hour forecast landing point and the actual landing point of several typhoons is about 50 kilometers. "The typhoon radius is 1000 km. If you look at the relative value, 50 kilometers is already a small error range. "

Baidu encyclopedia-weather forecast