Real-time dynamic rendering flood forecasting and flood simulation method and system

The invention relates to the technical field of flood simulation forecasting, in particular to a real-time dynamic rendering flood forecasting and flood simulation method and system. The method comprises the following steps: acquiring high-resolution earth surface data through a satellite remote sensing technology; performing earth surface feature extraction on the high-resolution earth surface data to obtain earth surface feature data; acquiring meteorological data; performing three-dimensional atmosphere real-time analysis on the meteorological data to obtain real-time meteorological field data; performing surface terrain analysis based on the surface feature data and constructing a terrain model so as to obtain the terrain model; performing dynamic hydrological process coupling on the terrain model and the real-time meteorological field data to obtain a hydrological terrain coupling model; and performing flood routing simulation processing according to the hydrotopographic coupling model to obtain flood ro