PhyGroup-UNet: Dynamic Physically Correlated Channel Grouping in a Lightweight UNet for Efficient Precipitation Nowcasting (opens in new tab)

Short-term precipitation nowcasting is critical for urban disaster prevention and emergency response, as it directly impacts flood mitigation and public safety. Existing deep learning approaches encounter three core limitations: high model redundancy, underutilization of multimodal physical correlations, and insufficient robustness in complex meteorological conditions. To address these challenges, we propose an enhanced efficient channel attention with a lightweight convolution UNet (ECA-LC-U...