欧洲哨兵-3C卫星发射两周后，已向地面传回了地球的首批图像和科学测量数据1。这些图像捕捉于2026年9月29日至30日，展示了阿尔卑斯山、北极地区和加勒比海等区域的地貌特征1。
卫星搭载的雷达高度计和海陆色彩仪器已开始执行其核心科学任务，对海面高度和格陵兰冰盖表面高程进行测量1。这些测量数据对长期气候变化监测具有重要意义。根据已有观测记录，全球海平面自1999年以来平均以每年3.64毫米的速度上升，且这一上升速率仍在加快1。
哨兵-3C卫星目前正处于试验测试阶段，预计还需五个月的时间完成试验测试和委运过程后投入正式运行1。欧洲空间局负责该卫星的开发和实施，后续运行将由欧洲空间局与欧洲气象卫星应用组织共同管理1。
Europe's Sentinel-3C satellite has begun transmitting its initial observations just two weeks after launch, capturing detailed imagery and scientific measurements of Earth's surface. 1 The spacecraft, which launched in September 2026, acquired its first images between September 29 and 30, 2026, documenting regions including the Alps, Arctic areas, and the Caribbean Sea. 1
The satellite's instruments are already operational. Its radar altimeter and ocean and land color instrument have commenced measurements of sea surface height and the surface elevation of the Greenland ice sheet, providing critical data for monitoring climate change. 1 Global sea levels have risen at an average rate of 3.64 millimeters per year since 1999, with the rate of increase accelerating. 1 The Sentinel-3C satellite will complete a five-month commissioning and validation phase before entering full operational service. 1
The European Space Agency (ESA) developed and deployed the Sentinel-3 mission, with the European Organization for the Exploitation of Meteorological Satellites (Eumetsat) sharing responsibility for operational management once the satellite becomes fully active. 1
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