气候变化领域集成服务门户(CCPortal): The Observed Seasonal Cycle of Submesoscale Processes in the Antarctic Marginal Ice Zone

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DOI	10.1029/2019JC015587
	The Observed Seasonal Cycle of Submesoscale Processes in the Antarctic Marginal Ice Zone
	Biddle L.C.; Swart S.
发表日期	2020
ISSN	21699275
卷号	125 期号:6
英文摘要	Submesoscale flows are energetic processes in the upper ocean that occur at scales of a few kilometers. These phenomena are important to climate because they can strongly impact vertical motions of heat, carbon, and biogeochemical properties between the surface and deep ocean. Their presence and magnitude are poorly understood in the Antarctic marginal ice zone (MIZ) and under sea ice due to a lack of observations. We present tagged southern elephant seal hydrographic data from the eastern Weddell Sea, over the austral late summer to spring in 2008, to assess the magnitude and seasonality of submesoscale processes in the Antarctic MIZ. We consider the linkages between sea ice cover, ocean stress variability, and mixed layer depth and how these influence the submesoscale fluxes. We find that there is a strong seasonal cycle in the magnitude of the equivalent heat flux from submesoscale flows (240 Wm−2), with peak activity occurring in midwinter. Periods of increased variability in sea ice cover, likely associated with leads, are also linked to restratification through submesoscale fluxes in midwinter. These findings have implications for understanding the magnitude and variability of upper ocean stratification and therefore highlights the importance of developing parameterizations for submesoscale processes in the Antarctic MIZ within global climate models. ©2020. The Authors.
英文关键词	Antarctic; Sea ice; Submesoscale processes
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/186852
作者单位	Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden; Department of Oceanography, University of Cape Town, Rondebosch, South Africa
推荐引用方式 GB/T 7714	Biddle L.C.,Swart S.. The Observed Seasonal Cycle of Submesoscale Processes in the Antarctic Marginal Ice Zone[J],2020,125(6).
APA	Biddle L.C.,&Swart S..(2020).The Observed Seasonal Cycle of Submesoscale Processes in the Antarctic Marginal Ice Zone.Journal of Geophysical Research: Oceans,125(6).
MLA	Biddle L.C.,et al."The Observed Seasonal Cycle of Submesoscale Processes in the Antarctic Marginal Ice Zone".Journal of Geophysical Research: Oceans 125.6(2020).