【新华社】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, released a report indicating that the global ocean's upper 2000 meters of heat content reached a record high for the ninth consecutive year in 2025, highlighting a clear trend of global warming [1] - The report also noted that the global average sea surface temperature ranked as the third highest in history, with a slight decrease compared to 2024, primarily influenced by the La Niña event [1] Group 1: Ocean Heat Content - In 2025, the global ocean's upper 2000 meters heat content continued to set historical records, marking a trend of annual increases over the past nine years [1] - The warming rate of the ocean has significantly accelerated since the 1990s, with 57% of the global ocean area reaching local historical top five heat content levels in 2025, particularly in critical regions such as the Southern Ocean, North Indian Ocean, tropical and South Atlantic, and the Mediterranean Sea [1] Group 2: Impact on Ecosystems and Sea Level - The ongoing ocean warming has profound effects on marine ecosystems and human societies, including reduced dissolved oxygen levels, increased risks of marine heatwaves, and coral bleaching, which heighten pressures on fisheries and coastal sustainability [2] - The additional ocean heat content has contributed approximately 2.49 millimeters to global average sea level rise through thermal expansion, exacerbating risks for low-lying coastal areas and infrastructure [2] - These changes indicate that ocean warming is a significant factor in the increasing risks of extreme weather and disasters driven by ongoing energy imbalances in the Earth's system [2]