Lightweight Spatiotemporal Network With Channel Attention and Multi‐Branch Fusion for Short‐Term Typhoon Wind Field Prediction

Jie Cui,Jun Liu,Yan Liu

Published 2026 in Meteorological Applications

ABSTRACT

Accurate short‐term prediction of typhoon 10‐m wind fields is crucial for early warning and risk reduction. We propose a lightweight spatiotemporal deep‐learning model that couples a convolutional neural network (CNN) for spatial features with a long short‐term memory (LSTM) network for temporal dynamics, augmented by squeeze‐and‐excitation (SE) channel attention and a multi‐branch feature fusion network (MBFN). Using ERA5 winds and China Meteorological Administration best‐track records over East Asia (2020–2023), the model ingests four hourly frames to predict the 10‐m wind field 1‐h ahead. Across root mean square error (RMSE), mean absolute error (MAE), and average wind speed error (AWSE), the approach consistently outperforms U‐Net, ConvLSTM, and Transformer baselines and better reconstructs high‐wind structures near typhoon cores; relative to a plain CNN–LSTM baseline, average RMSE and MAE decrease by 0.90% and 0.68% over 2020–2023. Ablation studies isolate the effects of SE and MBFN, evidencing robust generalization and computational efficiency suitable for near‐real‐time operations. A supplementary 6‐h experiment shows only modest, consistent increases across years—RMSE by 0.54% on average, MAE by 0.50%, and AWSE by 0.41%—indicating robustness at longer lead times.

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