南美洲湖泊温度极端和变化的新出现的变化
Dieu Anh Dinh1, Yan Tong2, Lian Feng2
1Centre for Freshwater and Environmental Studies, Dundalk Institute of Technology, Dundalk, Ireland.
概括
南美洲的湖泊正在显著变暖,日间温度变化增加. 这种变暖趋势和加剧的热浪威胁到淡水生态系统,迫切需要采取保护战略.
科学领域:
- 淡水生态学 淡水生态
- 气候科学 气候科学
- 临界技术 临界技术
背景情况:
- 南美洲的淡水系统至关重要,但却很容易受到气候变化的影响.
- 了解湖面水温 (LSWT) 的变化至关重要,但有限.
研究的目的:
- 在2,406个南美湖泊中分析LSWT趋势和热力学动态.
- 调查湖泊热量行为的气象驱动因素.
- 项目未来的LSWT变化和热浪动态.
主要方法:
- 分析历史 (1981-2020) 和未来 (2021-2099) 的LSWT数据.
- 评估日间和年间的温度变化.
- 识别气象驱动因素 (空气温度,短波辐射).
- 开发一种新的湖泊热类型学.
主要成果:
- 97.0%的湖泊显示显著的变暖趋势 (+0.11K十年-1).
- 86.2%的湖泊表现出日间温度变化的增加 (+0.02K十年-1).
- 空气温度和短波辐射是关键驱动因素,因地区而异.
- 预计湖泊热浪的频率,持续时间和强度将加剧.
结论:
- 在南美湖泊中观察到广泛的变暖和改变的热力学.
- 未来的气候变化将加剧热浪事件.
- 一个新的热类型学揭示了不同的湖泊灵敏度,为保护工作提供了信息.
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