The weather forecast is sometimes accurate and sometimes inaccurate! Why is this?

Do you want me to post it three times? The best answers to the previous two questions asked about this person are actually so emotional, too emotional, hahaha. Here are my answers for you.

The weather process is a chaotic process and requires solving a system of nonlinear differential equations. The solution of the nonlinear differential equation has a particularly strong relationship with the initial value. If there is a small deviation from the initial value, the solution may be poor. Eight thousand miles away. The weather forecasting process is equivalent to first collecting data, and then calculating and predicting future weather. There are always errors in data collection, so the solution to the equation may vary greatly.

Now the weather forecast can predict up to 48 hours, which is relatively accurate.

This has a lot to do with data collection and computer technology

In fact, if it is a linear equation, even if it is approximated and has errors or the model is not good, the result deviation will not be very big. The key is Using nonlinear differential equations, this is chaos theory, also known as the butterfly effect in popular science