2025年中国近海热含量偏高 导致海洋灾害频次增多

Core Insights - The ocean heat content in China's coastal waters is significantly higher than the historical average, with the South China Sea reaching a record high, indicating a concerning trend in marine conditions [1] - The increase in sea temperature and heat content has led to a rise in the frequency of marine disasters, including typhoons and storm surges, impacting coastal regions [2] Group 1: Ocean Heat Content - In 2025, the ocean heat content in China's coastal waters is 2.02 ZJ higher than the historical average, with the South China Sea breaking historical records [1] - The Bohai Sea and northern Yellow Sea, southern Yellow Sea, and East China Sea show heat content increases of 11 EJ, 33 EJ, and 169 EJ respectively, indicating a warming trend across all regions [1] Group 2: Sea Surface Temperature - The average sea surface temperature in China's coastal waters for 2025 is 21.05 degrees Celsius, which is 0.76 degrees Celsius higher than the historical average, despite being 0.45 degrees Celsius lower than in 2024 [1] - The Bohai Sea and northern Yellow Sea exhibit the most significant warming, with temperatures 0.9 degrees Celsius above the historical average, while the southern Yellow Sea, East China Sea, and South China Sea are 0.81, 0.75, and 0.58 degrees Celsius higher respectively [1] Group 3: Impact of Ocean Warming - Ocean warming has led to an increase in extreme weather events, with 19 storm surge events recorded in 2025, surpassing the ten-year average of 15 events [2] - The number of disastrous storm surge events reached 10 in 2025, exceeding the ten-year average of 7.1 events, indicating a growing risk to life and property [2] - Direct economic losses from marine disasters in 2025 are significantly higher than the ten-year average, highlighting the financial impact of these environmental changes [2] Group 4: Monitoring and Future Outlook - The National Marine Environmental Forecasting Center will continue to monitor the abnormal changes in nearshore sea temperature and heat content, providing timely updates and warnings to support disaster prevention and marine economic development [2]