气候变化领域集成服务门户(CCPortal): Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes

CCPortal

DOI	10.1029/2019JC015950
	Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes
	Fujisaki-Manome A.; Anderson E.J.; Kessler J.A.; Chu P.Y.; Wang J.; Gronewold A.D.
发表日期	2020
ISSN	21699275
卷号	125 期号:5
英文摘要	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 ice thickness) 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 thermal insulation effect. During major snowstorms, snowfall over the open lake caused notable cooling of the water surface due to latent heat absorption. Overall, the sensible heat flux from rain in spring and summer was found to have negligible impacts on the water surface temperature. Although uncertainties remain in overlake precipitation estimates and model's representation of snow on the ice, this study demonstrated that winter precipitation, particularly snowfall on the ice and water surfaces, is an important contributing factor in Great Lakes ice production and thermal conditions from late fall to spring. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	air-ice-lake interactions; Great Lakes; ice; precipitation; snow
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186876
作者单位	Cooperative Institute for Great Lakes Research, University of Michigan, Ann Arbor, MI, United States; Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, United States; National Oceanic and Atmospheric Administration, Great Lakes Environmental Research Laboratory, Ann Arbor, MI, United States; School for Environment and Sustainability, University of Michigan, Ann Arbor, MI, United States
推荐引用方式 GB/T 7714	Fujisaki-Manome A.,Anderson E.J.,Kessler J.A.,et al. Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes[J],2020,125(5).
APA	Fujisaki-Manome A.,Anderson E.J.,Kessler J.A.,Chu P.Y.,Wang J.,&Gronewold A.D..(2020).Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes.Journal of Geophysical Research: Oceans,125(5).
MLA	Fujisaki-Manome A.,et al."Simulating Impacts of Precipitation on Ice Cover and Surface Water Temperature Across Large Lakes".Journal of Geophysical Research: Oceans 125.5(2020).