4 results about "Wind forecast" patented technology

This application provides a radar echo extrapolation and thunderstorm / strong wind data processing method, apparatus, and electronic device based on optical flow, relating to the field of meteorological forecasting. The method includes: acquiring radar base data of a target area over a continuous historical period to generate a corresponding radar reflectivity factor image sequence; inputting the preprocessed radar reflectivity factor image into an optical flow calculation model to obtain a dense optical flow field; calculating the vorticity field and divergence field based on the dense optical flow field; stitching and fusing the radar reflectivity factor image, optical flow field, vorticity field, and divergence field at the same historical moment to form a multi-feature fused spatiotemporal sequence data; inputting the spatiotemporal sequence data into a pre-trained spatiotemporal sequence prediction model to output prediction results for a future preset time period; and generating and outputting a short-term thunderstorm / strong wind forecast product. This method can more accurately capture the nonlinear evolution of the micro-scale structure of thunderstorm / strong wind systems, significantly improving the accuracy of extrapolation forecasts.

The application discloses a thunderstorm gale prediction method and system based on centralized sampling and multi-branch fusion, and equipment, relates to the meteorological prediction technical field, and includes: adopting centralized sampling to intercept the radar echo sequence of a prediction area; performing multi-branch feature extraction on the radar echo sequence to obtain double-dimension splicing features, and performing branch feature interaction on the double-dimension splicing features to obtain global fusion features; extracting physical constraint features of the prediction area, and constructing physical-global fusion features based on the physical constraint features and the global fusion features; performing coordinate regression and logistic regression calculation based on the physical-global fusion features to obtain the thunderstorm gale occurrence probability of the thunderstorm gale drop point in a short term. The application is used to solve the problem that the thunderstorm gale drop area and the thunderstorm gale occurrence probability in a short term cannot be accurately predicted.