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气候变化反映在斯洛文尼亚降雨的40年同位素组成趋势中
Jan Gačnik1, Klara Žagar1, István Gábor Hatvani2
1Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000, Ljubljana, Slovenia.
Environmental research
|November 7, 2025
概括
卢布尔雅纳的长期稳定同位素监测显示,与区域变暖相关的降水值 (δ18O, δ2H) 增加. 这种同位素转移表明,过去十年来,水循环相互作用发生了变化.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 同位素地球化学 同位素地球化学
背景情况:
- 长期监测降水中的稳定同位素 (δ18O, δ2H) 和气象数据对于了解水气候变化至关重要.
- 中欧和东南欧的气候受大型水气候模式的影响.
研究的目的:
- 来自斯洛文尼亚卢布尔雅纳的每月降水稳定同位素记录的多十年 (1981-2024) 数据集.
- 分析趋势,季节性模式和 δ18O, δ2H 和 d-excess 的振荡.
- 研究同位素变化与气象因素之间的关系,包括温度和空气质量起源.
主要方法:
- 一个多十年 (1981-2024) 降水稳定同位素数据集的分析 (δ18O, δ2H, d-过量).
- 希尔伯特-黄转换的应用时间序列分解和振荡分析.
- 与气象数据 (温度) 的相关性分析和HYSPLIT反向轨迹分析用于空气质量来源的识别.
主要成果:
- 在d18O,d2H和d-超值值中观察到的上升趋势,与区域变暖一致.
- 在所有同位素变量中的统计学上显著的年度振荡,与温度振荡有很强的相关性.
- 对温度波动的d-过量反应的2-3个月的滞后以及地中海空气质量对秋季降水的影响的识别.
结论:
- 同位素数据表明,水循环对变暖的反应正在加速,呈指数级.
- 证据表明,近十年来,该地区的降水-地表水-地下水相互作用发生了变化.
- 发现在整个大陆和沿海站都是一致的,突出了更广泛的区域水气候变化.
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