The state and fate of snow on sea ice are crucial in the mass and energy balance of sea ice. The function of atmospheric rivers (ARs) on snow depth over sea ice has not been measured thus far, limiting the understanding of the mechanism of snow depth changes. Here, the effect of ARs on snow depth changes was explored. We found that increased AR frequency is responsible for winter-autumn snow accumulation and spring-summer snow melting. The 2 m air temperature (T2m), rainfall, snowfall, mean net longwave radiation (NLR), mean net shortwave radiation (NSR) and cloud radiative effect (CRE) during ARs explain the changes in snow depth triggered by AR occurrence. This work helps us understand how ARs affect snow depth changes through related physical processes, promotes an understanding of climate systems and provides a theoretical basis for snow treatment in sea ice models.

中文翻译：

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大气河流在北极积雪深度变化中的不同作用


海冰上雪的状态和命运对于海冰的质量和能量平衡至关重要。迄今为止，大气河流（AR）对海冰积雪深度的作用尚未测量，限制了对积雪深度变化机制的理解。在这里，我们探讨了 AR 对雪深变化的影响。我们发现 AR 频率的增加是冬秋季积雪和春夏季融雪的原因。 AR 期间的 2 m 气温 (T2m)、降雨量、降雪、平均净长波辐射 (NLR)、平均净短波辐射 (NSR) 和云辐射效应 (CRE) 解释了 AR 发生引发的雪深变化。这项工作帮助我们了解AR如何通过相关物理过程影响雪深变化，促进对气​​候系统的理解，并为海冰模型中的积雪处理提供理论基础。