2025年中国近海热含量达历史第二高，南海热含量创历史新高

Core Insights - In 2025, China's coastal ocean heat content is significantly higher than the historical average, with the South China Sea reaching a record high, and overall coastal heat content ranking second historically [1][2] Group 1: Ocean Heat Content - The ocean heat content in China's coastal waters is 6.06 ZJ higher than the historical average (1981-2010), an increase of 3.0 ZJ from 2024, second only to the 2008 record of 6.16 ZJ [1] - The South China Sea shows a notable increase, with heat content 2.02 ZJ above the historical average, marking a rise of 0.53 ZJ from 2024, surpassing previous records [1] - Other regions such as Bohai Sea, Yellow Sea (North and South), and East China Sea also exhibit significant increases in heat content, with deviations of 11 EJ, 33 EJ, and 169 EJ respectively [1] Group 2: Sea Surface Temperature - The average sea surface temperature in China's coastal waters for 2025 is 21.05°C, which is 0.76°C higher than the historical average, despite being 0.45°C lower than in 2024 [2] - The Bohai Sea and northern Yellow Sea show the most significant warming, with temperatures 0.9°C above the historical average, while southern Yellow Sea, East China Sea, and South China Sea are 0.81°C, 0.75°C, and 0.58°C higher respectively [2] Group 3: Impact of Ocean Warming - Ocean warming is linked to an increase in extreme weather events, including more frequent typhoons and marine heatwaves, posing risks to life and property [3] - In 2025, there were 19 storm surge events along the coast, exceeding the ten-year average of 15.0, with 10 of these being classified as disaster-level [3] - The direct economic losses from marine disasters in 2025 were significantly higher than the ten-year average [3] Group 4: Monitoring and Forecasting - The National Oceanic Environment Forecast Center will continue to monitor the situation in 2026 and provide timely updates and warnings to support disaster prevention and marine economic development [4]