Frequency-Compensated Network for Daily Arctic Sea Ice Concentration Prediction

• URL: http://arxiv.org/abs/2504.16745v1
• Date: Wed, 23 Apr 2025 14:15:48 GMT
• Title: Frequency-Compensated Network for Daily Arctic Sea Ice Concentration Prediction
• Authors: Jialiang Zhang, Feng Gao, Yanhai Gan, Junyu Dong, Qian Du,
• Abstract summary: We present a Frequency-Compensated Network (FCNet) for Arctic SIC prediction on a daily basis.<n>In particular, we design a dual-branch network, including branches for frequency feature extraction and convolutional feature extraction.<n>High-frequency features are enhanced via channel-wise attention, and temporal attention unit is employed for low-frequency feature extraction to capture long-range sea ice changes.
• Score: 36.20486793776406
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Accurately forecasting sea ice concentration (SIC) in the Arctic is critical to global ecosystem health and navigation safety. However, current methods still is confronted with two challenges: 1) these methods rarely explore the long-term feature dependencies in the frequency domain. 2) they can hardly preserve the high-frequency details, and the changes in the marginal area of the sea ice cannot be accurately captured. To this end, we present a Frequency-Compensated Network (FCNet) for Arctic SIC prediction on a daily basis. In particular, we design a dual-branch network, including branches for frequency feature extraction and convolutional feature extraction. For frequency feature extraction, we design an adaptive frequency filter block, which integrates trainable layers with Fourier-based filters. By adding frequency features, the FCNet can achieve refined prediction of edges and details. For convolutional feature extraction, we propose a high-frequency enhancement block to separate high and low-frequency information. Moreover, high-frequency features are enhanced via channel-wise attention, and temporal attention unit is employed for low-frequency feature extraction to capture long-range sea ice changes. Extensive experiments are conducted on a satellite-derived daily SIC dataset, and the results verify the effectiveness of the proposed FCNet. Our codes and data will be made public available at: https://github.com/oucailab/FCNet .

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