Offline Meteorology-Pollution Coupling Global Air Pollution Forecasting Model with Bilinear Pooling

• URL: http://arxiv.org/abs/2503.18405v1
• Date: Mon, 24 Mar 2025 07:24:31 GMT
• Title: Offline Meteorology-Pollution Coupling Global Air Pollution Forecasting Model with Bilinear Pooling
• Authors: Xu Fan, Yuetan Lin, Bing Gong, Hao Li,
• Abstract summary: Traditional physics-based models forecast global air pollution by coupling meteorology and pollution processes.<n>Existing deep learning (DL) solutions employ online coupling strategies for global air pollution forecasting.<n>This study pioneers a DL-based offline coupling framework that utilizes bilinear pooling to achieve offline coupling between meteorological fields and pollutants.
• Score: 5.236306661644172
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Air pollution has become a major threat to human health, making accurate forecasting crucial for pollution control. Traditional physics-based models forecast global air pollution by coupling meteorology and pollution processes, using either online or offline methods depending on whether fully integrated with meteorological models and run simultaneously. However, the high computational demands of both methods severely limit real-time prediction efficiency. Existing deep learning (DL) solutions employ online coupling strategies for global air pollution forecasting, which finetune pollution forecasting based on pretrained atmospheric models, requiring substantial training resources. This study pioneers a DL-based offline coupling framework that utilizes bilinear pooling to achieve offline coupling between meteorological fields and pollutants. The proposed model requires only 13% of the parameters of DL-based online coupling models while achieving competitive performance. Compared with the state-of-the-art global air pollution forecasting model CAMS, our approach demonstrates superiority in 63% variables across all forecast time steps and 85% variables in predictions exceeding 48 hours. This work pioneers experimental validation of the effectiveness of meteorological fields in DL-based global air pollution forecasting, demonstrating that offline coupling meteorological fields with pollutants can achieve a 15% relative reduction in RMSE across all pollution variables. The research establishes a new paradigm for real-time global air pollution warning systems and delivers critical technical support for developing more efficient and comprehensive AI-powered global atmospheric forecasting frameworks.

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