What is the weather forecast procedure of the Hong Kong Observatory?

The weather forecast program of the Hong Kong Observatory is mainly based on the atmospheric numerical model. This model uses high-speed computer to try to solve complex equations representing physical laws, so as to simulate the evolution of the atmosphere and predict weather changes. The meteorological elements in the equation include wind, temperature, air pressure and water vapor content. In order to obtain the change of meteorological variables with time, we need to know the initial conditions and boundary conditions.

The computer model used by the Hong Kong Observatory systematically divides the three-dimensional space of meteorology and forms a grid. The state of the atmosphere at a certain moment is expressed by the numerical value of meteorological elements at each grid point. The denser the grid points, the higher the resolution of the model, and the more detailed the future atmospheric conditions can be drawn. But the amount of computer operation will also increase greatly.

In addition to using atmospheric numerical models, the Hong Kong Observatory also relies on other tools and methods to forecast the weather, such as weather radar, meteorological observation data and experience.

The official version of the weather software of the Hong Kong Observatory is an application program for the Hong Kong Observatory to provide weather forecast, meteorological broadcast and rainstorm warning for Hong Kong residents. Users can view real-time weather information on this application, including temperature, humidity, air quality, wind direction, wind speed and so on. In addition, the application also provides weather forecast, special weather tips, location-based rainfall and lightning forecast and other functions. Users can choose to view different weather information according to their own needs.