专家：2025年我国近海热含量显著偏高

Core Viewpoint - The article highlights the significant increase in ocean heat content in China's coastal waters by 2025, which is expected to lead to a higher frequency of marine disasters such as typhoons due to global warming and human activities [1][2]. Group 1: Ocean Heat Content and Its Implications - Ocean heat content is a critical indicator of global warming, with over 90% of the heat from human activities absorbed by the oceans. In 2025, China's coastal ocean heat content reached its second-highest level on record, with the South China Sea hitting a historical peak [2][4]. - The continuous rise in ocean heat content is attributed to multiple factors, primarily the imbalance caused by greenhouse gas emissions, which leads to regional climate factors exacerbating the warming [4]. Group 2: Increased Frequency of Extreme Weather Events - The elevated heat content in the South China Sea is linked to an increase in the frequency of marine disasters, including typhoons and storm surges [5]. - Higher sea temperatures intensify evaporation, providing more energy and moisture for typhoons, which can rapidly escalate from strong tropical storms to super typhoons. This heat concentration can alter atmospheric circulation patterns, affecting typhoon paths and increasing the likelihood of them impacting regions like Guangdong and Fujian [7]. Group 3: Ecological Impact of Rising Ocean Temperatures - The accumulation of ocean heat poses a destructive threat to ecosystems. Warmer waters alter fish migration patterns, leading to the decline of traditional fishing grounds and a shift in species distribution [10]. - Coral reefs face severe threats from ocean warming, which can cause coral bleaching and mortality. The loss of coral reefs, vital for biodiversity, further exacerbates the crisis in fishery resources and diminishes natural coastal defenses against storm surges [12]. Group 4: Long-term Climate Change and Mitigation - The ongoing rise in ocean heat content serves as a clear warning signal regarding climate imbalance, potentially triggering a series of chain reactions, including accelerated sea-level rise and increased extreme weather events [12][14]. - There is an urgent need to address long-term climate change trends and accelerate carbon reduction efforts to mitigate the escalating risks of disasters [14].