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Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes
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2020
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Source: Journal of Geophysical Research: Oceans, 125(5)
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Journal Title:Journal of Geophysical Research: Oceans
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Description:Precipitation impacts on ice cover and water temperature in the Laurentian Great Lakes were examined using state ‐of‐the‐art coupled ice ‐hydrodynamic models. Numerical experiments were conducted for the recent anomalously cold (2014 –2015) and warm (2015 –2016) winters that were accompanied by high and low ice coverage over the lakes, respectively. The results of numerical experiments showed that snow cover on the ice, which is the manifestation of winter precipitation, reduced the total ice volume (or mean icethickness) in all of the Great Lakes, shortened the ice duration, and allowed earlier warming of water surface. The reduced ice volume was due to the thermal insulation of snow cover. The surface albedo was also increased by snow cover, but its impact on the delay the melting of ice was overcome by the thermalinsulation effect. During major snowstorms, snowfall over the open lake caused notable cooling of the water
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Source:Journal of Geophysical Research: Oceans, 125(5)
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ISSN:2169-9275;2169-9291;
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Rights Information:Other
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Compliance:Library
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