arXiv:2505.04918cs.LGcs.AI2025-05IJCAI被引 4

将物理规律与地球地形拓扑融入深度学习,提升天气预测精度。

Physics-Assisted and Topology-Informed Deep Learning for Weather Prediction

  • 结合流体物理方程与球面图神经网络建模天气演变
  • 在5.625°分辨率数据上超越主流深度学习与数值预报模型
  • 适合关注气象建模融合物理机制的研究者

尽管深度学习在天气预测中展现出巨大潜力,但多数模型忽略了天气演化的物理规律或地球表面的拓扑结构。为此,我们提出PASSAT——一种融合物理与拓扑信息的新型深度学习天气预测模型。该模型将天气变化归因于两个关键因素:(i) 可由对流方程和纳维-斯托克斯方程刻画的平流过程;(ii) 难以建模与计算的地气相互作用。同时,PASSAT考虑地球表面的球面拓扑,而非简单视为平面。通过在球面流形上数值求解对流方程和纳维-斯托克斯方程,并利用球面图神经网络捕捉地气相互作用,同时生成求解对流方程所需的初始速度场。在5.625°分辨率的ERA5数据集上,PASSAT优于当前最先进的深度学习模型及业务数值预报模型IFS T42。代码与模型权重已公开于https://github.com/Yumenomae/PASSAT_5p625。

原文摘要 · Abstract (English)

Although deep learning models have demonstrated remarkable potential in weather prediction, most of them overlook either the \textbf{physics} of the underlying weather evolution or the \textbf{topology} of the Earth's surface. In light of these disadvantages, we develop PASSAT, a novel Physics-ASSisted And Topology-informed deep learning model for weather prediction. PASSAT attributes the weather evolution to two key factors: (i) the advection process that can be characterized by the advection equation and the Navier-Stokes equation; (ii) the Earth-atmosphere interaction that is difficult to both model and calculate. PASSAT also takes the topology of the Earth's surface into consideration, other than simply treating it as a plane. With these considerations, PASSAT numerically solves the advection equation and the Navier-Stokes equation on the spherical manifold, utilizes a spherical graph neural network to capture the Earth-atmosphere interaction, and generates the initial velocity fields that are critical to solving the advection equation from the same spherical graph neural network. In the $5.625^\circ$-resolution ERA5 data set, PASSAT outperforms both the state-of-the-art deep learning-based weather prediction models and the operational numerical weather prediction model IFS T42. Code and checkpoint are available at https://github.com/Yumenomae/PASSAT_5p625.

天气预测物理信息图神经网络

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