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Climate Change is Contributing to Faster Rates of Lake Ice Loss in Lakes Around the Northern Hemisphere
Journal of Geophysical Research: Biogeosciences ( IF 3.7 ) Pub Date : 2021-06-19 , DOI: 10.1029/2020jg006134
Mohammad Arshad Imrit 1 , Sapna Sharma 1
Affiliation  

Lake ice phenology has been recorded for decades, providing us with long-term records to investigate the impact of climate change in lakes since the Industrial Revolution. Here, we examine the trends and drivers of 18 lakes across the Northern Hemisphere, with 156–204 years of data, starting in the 1810s. We show that: (a) trends in ice phenology are faster than found by previous studies. Ice-on is 11 days later per century, ice-off is 9 days earlier per century, and ice cover duration is 19 days shorter per century; (b) there are significant breakpoints in the 1850s, 1870s, mid-1890s, and mid-1990s, after which trends in ice phenology are even faster, and associated with changing weather and climate; and (c) local air temperatures explain the most variation in ice phenology, on average 36.5%, followed by progressive climate change explaining around 17.5% on average, with teleconnection patterns explaining the least variation. Our findings support the assertion that broad-scale climatic changes have led to more rapid lake ice loss in lakes distributed across the Northern Hemisphere, with potential widespread impacts on critical ecosystem services that lake ice provides.

中文翻译:

气候变化导致北半球湖泊冰层流失速度加快

湖冰物候已被记录数十年,为我们提供了长期记录,以调查自工业革命以来湖泊气候变化的影响。在这里,我们利用 1810 年代开始的 156-204 年的数据,研究了北半球 18 个湖泊的趋势和驱动因素。我们表明:(a)冰物候学的趋势比以前的研究发现的要快。冰上每世纪晚 11 天,冰上每世纪早 9 天,冰盖持续时间每世纪缩短 19 天;(b) 在 1850 年代、1870 年代、1890 年代中期和 1990 年代中期存在显着的断点,之后冰物候的趋势更快,并且与天气和气候的变化有关;(c) 当地气温解释了冰物候的最大变化,平均 36.5%,其次是渐进的气候变化,平均解释了大约 17.5%,遥相关模式解释了最小的变化。我们的研究结果支持这样的断言,即广泛的气候变化导致分布在北半球的湖泊中更快的湖冰流失,对湖冰提供的关键生态系统服务有潜在的广泛影响。
更新日期:2021-07-22
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