How is the weather forecast calculated?

Actually, it was calculated by the computer. Forecasters first use computers to solve equations describing weather evolution and "calculate" future weather; Then, by analyzing the weather map, meteorological satellite data and so on. , combined with accumulated experience, make specific weather forecast for the next 3 to 5 days.

It is difficult to solve the mathematical equation for numerical weather forecast. Richardson, a British mathematician, wrote a book "Making Weather Forecast by Numerical Method" to describe the calculation process. In order to obtain accurate data, he organized a large number of manpower to make the first numerical prediction attempt from 19 16 to 19 18. This time, it took many people 12 months to complete the forecast with a hand-cranked computer-to get the forecast for the next 24 hours, if one keeps calculating day and night, it will take 64,000 days, that is, 175 years. In other words, if you want to keep up with the changeable weather, you need a computing factory with 64,000 people working together to calculate the 24-hour weather forecast.