Limnological understanding of the role snow plays in under‐ice thermal dynamics is mainly based on studies of clear‐water lakes. Very little is known about the role snow plays in the thermal dynamics of dystrophic lakes. We conducted a whole lake experiment on a small, 8 m deep dystrophic bog lake in northern Wisconsin, where we removed all snowfall over two consecutive winters. Due to weather variability, only 1 year had predominantly black ice. Under these conditions, the lake rapidly cooled in early and mid‐winter, compared to snow covered conditions that insulated the lake from heat loss. The lake also rapidly gained heat in late winter resulting in isothermal conditions well in advance of ice‐off. These results show how water clarity modulates the influence of snow on under‐ice thermal dynamics, which is relevant to futures with snow droughts.

中文翻译：

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除雪冷却一个营养不良的小湖


对雪在冰下热动力学中的作用的湖沼学理解主要基于对清水湖的研究。关于雪在营养不良湖泊的热动力学中的作用，人们知之甚少。我们在威斯康星州北部一个 8 m 深的营养不良沼泽湖上进行了全湖实验，在那里我们清除了连续两个冬天的所有降雪。由于天气变化，只有 1 年以黑冰为主。在这些条件下，湖水在初冬和隆冬迅速冷却，而白雪覆盖的条件使湖无法抵御热量损失。该湖在冬末还迅速升温，导致等温条件在结冰之前就已经出现。这些结果显示了水的透明度如何调节雪对冰下热动力学的影响，这与雪旱的期货有关。