HY-3A卫星CZI2获取的波罗的海蓝藻藻华影像

封面图像为新一代海洋水色观测卫星HY-3A的第二代海岸带成像仪2025年7月9日获取的波罗的海瑞典沿岸蓝藻爆发的影像。图中可以明显看出蓝藻爆发后以海流的形式对瑞典沿岸群岛的侵袭。波罗的海的蓝藻藻华在每年夏季都会爆发，对当地的渔业和旅游资源带来巨大的影响。第二代海岸带成像仪具有20m空间分辨率8个通道多光谱和5 m 全色成像能力，具有较高的信噪比，通过该次成像可以发现第二代海岸带成像仪在利用光学影像研究海上亚中尺度涡旋的潜力。

Images of the Baltic Sea cyanobacterial bloom acquired by HY-3A satellite CZI2

The cover image depicts a visualization of a cyanobacterial bloom along the Swedish coast of the Baltic Sea, acquired by the Second Generation Coastal Zone Imager (CZI2) on July 9, 2025, aboard the new generation of ocean color observation satellites(HY-3A). The image clearly illustrates the intrusion of the cyanobacterial bloom in the form of currents into the archipelago along the Swedish coast. Cyanobacterial blooms in the Baltic Sea occur annually during the summer, significantly impacting local fisheries and tourism resources. The CZI2 boasts 20 m spatial resolution across 8 multispectral channels and 5 m panchromatic imaging capabilities, with a high signal-to-noise ratio. This particular imaging event demonstrates the instrument's potential for studying submesoscale ocean eddies using optical imagery.