Weather is also maths
The weather is based on complex physical processes in the atmosphere. These can be approximately described using mathematical equations. To forecast the following day's weather, these equations have to be calculated. For a numerical forecasting model, a grid is applied to the globe or certain parts of the Earth at different altitudes within the atmosphere. At each grid intersection, a set of formulas is applied to calculate the development of various weather parameters, including temperature, air pressure, humidity and wind. Data measured from this point is incorporated as an input value. On this basis, the computer calculates how the atmosphere may change in future.