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气候变化推动了快速变暖和湖泊热浪的增加
Xiwen Wang1, Kun Shi2, Yunlin Zhang2
1Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
全球湖泊温度正在上升,加剧热浪. 这项研究结合卫星数据和模型,表明中国的湖泊变暖的速度比预期的要快,威胁到生态系统和人类健康.
科学领域:
- 环境科学 环境科学
- 气候科学 气候科学
- 临界技术 临界技术
背景情况:
- 气候变化通过地表水温上升和湖泊热浪增加,对全球湖泊生态系统构成重大威胁.
- 湖泊温度变化的精确大规模模拟有限,在全球评估中产生不确定性.
研究的目的:
- 通过整合卫星观测和数值模拟来改进湖泊温度建模.
- 调查从1980年到2100年中国湖泊的地表温度趋势和湖泊热浪发生情况.
主要方法:
- 综合卫星观测与数值模型用于增强湖泊温度模拟.
- 分析了湖面温度和湖热浪持续时间的趋势.
- 在高温室气体排放情景下,预计未来的变化.
主要成果:
- 中国的湖泊表面水温每十年 (1980-2021) 升温0.11°C,仅仅是模型估计的一半.
- 观察到的不对称的季节性变暖改变了平原和高山湖泊的不同季节性温度.
- 湖泊热浪的持续时间每十年增加7.7天.
结论:
- 模型与数据的整合提供了比单独的模型更准确的湖泊变暖估计.
- 预计到2100年湖面温度 (2.2°C) 和热浪持续时间 (197天) 的增加,将带来严重的风险.
- 湖泊状况恶化威胁着水生生物多样性和人类健康,特别是在高排放的情况下.
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