Accuracy of Lhasa 15 Weather Forecast
Resolutely give up the commonly used method at present-that is, take the old road of studying the atmosphere with poor memory function, and must take the astronomical road, because I think the power of atmospheric change comes from the different positions of the planets on the sun. Only by understanding the law of this driving force and its relationship with rain or shine can we really provide it for mankind.
Model weather forecast is to design a huge program to calculate weather forecast, and input the currently known weather phenomena, so that it can calculate the future atmospheric motion state and weather conditions.
The change of weather is the result of the change of atmospheric movement around the earth. The basic laws of fluid mechanics and thermodynamics in physics can be used to analyze the movement and change of the atmosphere, and these laws can be written into mathematical equations in mathematical language.
Numerical weather forecast:
Numerical weather forecast is to use the atmospheric motion equation to integrate the equation under certain initial and boundary conditions to forecast the future weather. 192 1 year, Richardson first tried to forecast the weather by numerical method. Because of the huge amount of calculation, he organized a lot of manpower and designed a detailed calculation form before he could complete it.
However, the predicted results are seriously inconsistent with the actual atmospheric changes, because the role of high-frequency waves in the atmosphere is not handled well. 1950, Charney successfully made a 24-hour numerical forecast based on the atmospheric motion equations after filtering high-frequency waves by using the world's first computer ENIAC.