在新出现的水气候趋势下,卡拉科勒姆异常的转变
Yasir Latif1, Sara C Pryor2, Sardar Ateeq-Ur-Rehman3
1Department of Earth and Atmospheric Sciences, Snee Hall, Cornell University, Ithaca, 14853, NY, USA; Department of Complex Systems, Institute of Computer Science of the Czech Academy of Sciences, Pod Vodarenskou vezi 271/2, Prague, 18200, Pragu 8, Czech Republic.
The Science of the total environment
|November 12, 2025
概括
由于气候变化,稳定的冰川的卡拉科鲁姆异常 (KA) 正在结束. 气候变暖的增加,特别是在夏季,正在导致冰川失去质量,并改变洪扎河流域的河流.
科学领域:
- 冰川学的冰川学
- 气候科学 气候科学
- 水文学 水文学
背景情况:
- 卡拉科鲁姆异常 (KA) 描述了一个现象,该地区的冰川表现出稳定或正质量平衡,与全球趋势形成鲜明对比.
- 最近的研究质疑了由于十年气候变化而导致KA的持久性.
研究的目的:
- 为了检查卡拉科拉姆异常 (KA) 在洪扎河流域 (HRB) 的时间演变和持续性.
- 调查影响该地区冰川质量平衡的水气候趋势.
主要方法:
- 利用现场水气候数据 (温度,降水,雪,流量) 从1995年至2021年.
- 集成的再分析/卫星产品和MODIS雪覆盖面积 (SCA) 数据 (2001-2020年).
- 应用波段转移函数 (WTF),创新趋势分析 (ITA),曼-肯达尔 (MK) 测试,以及用于趋势和关系分析的人工神经网络 (ANN).
主要成果:
- 证实了KA向气候趋势驱动的冰川质量损失的过渡.
- 观察到显著的变暖趋势,特别是在夏季,导致降雪覆盖和增加溪流流量.
- 确定了温度,雪地覆盖,相对湿度和溪流之间的强烈因果关系,温度是主导因素.
结论:
- 由于加剧的变暖趋势,卡拉科鲁姆异常 (KA) 正在减少.
- 夏季集中变暖是洪扎河流域雪地覆盖和溪流动态观察到的变化的关键驱动因素.
- 水气候因素,特别是温度,在这个地区的流动变化中比降水更为重要.
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