全球海洋上层2000米热含量连续9年刷新有观测记录以来最高值

Core Insights - The international research team, consisting of 56 scientists from 31 research institutions, reported that the global ocean heat content in the upper 2000 meters reached a record high for the ninth consecutive year in 2025, indicating a clear trend of global warming [1] - The global average sea surface temperature ranked third highest in history, with a slight decrease compared to 2024, primarily influenced by the La Niña event [3] Group 1: Ocean Heat Content - The ocean has absorbed over 90% of the heat from human-induced global warming, making ocean heat content a stable and reliable indicator of global warming [1] - In 2025, 57% of the global ocean area reached local historical top five heat content levels, particularly in critical regions such as the Southern Ocean, North Indian Ocean, tropical and South Atlantic, and the Mediterranean Sea [1] Group 2: Impacts on Ecosystems and Sea Level - The ongoing warming of the ocean has profound effects on marine ecosystems and human society, including reduced dissolved oxygen levels, increased risk of marine heatwaves, and coral bleaching [3] - The added ocean heat content contributed approximately 2.49 millimeters to global average sea level rise, exacerbating risks for low-lying coastal areas and coastal infrastructure [3]