气候变化领域集成服务门户(CCPortal): Comparing Observations and Parameterizations of Ice-Ocean Drag Through an Annual Cycle Across the Beaufort Sea

CCPortal

DOI	10.1029/2020JC016977
	Comparing Observations and Parameterizations of Ice-Ocean Drag Through an Annual Cycle Across the Beaufort Sea
	Brenner S.; Rainville L.; Thomson J.; Cole S.; Lee C.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	Understanding and predicting sea ice dynamics and ice-ocean feedback processes requires accurate descriptions of momentum fluxes across the ice-ocean interface. In this study, we present observations from an array of moorings in the Beaufort Sea. Using a force-balance approach, we determine ice-ocean drag coefficient values over an annual cycle and a range of ice conditions. Statistics from high resolution ice draft measurements are used to calculate expected drag coefficient values from morphology-based parameterization schemes. With both approaches, drag coefficient values ranged from ∼1 to 10 × 10−3, with a minimum in fall and a maximum at the end of spring, consistent with previous observations. The parameterizations do a reasonable job of predicting the observed drag values if the under ice geometry is known, and reveal that keel drag is the primary contributor to the total ice-ocean drag coefficient. When translations of bulk model outputs to ice geometry are included in the parameterizations, they overpredict drag on floe edges, leading to the inverted seasonal cycle seen in prior models. Using these results to investigate the efficiency of total momentum flux across the atmosphere-ice-ocean interface suggests an inter-annual trend of increasing coupling between the atmosphere and the ocean. © 2021. The Authors.
英文关键词	air/sea/ice exchange; Beaufort Sea; drag parameterization; ice-ocean drag; sea ice momentum; sea ice morphology
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/186356
作者单位	Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Woods Hole Oceanographic Institution, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Brenner S.,Rainville L.,Thomson J.,et al. Comparing Observations and Parameterizations of Ice-Ocean Drag Through an Annual Cycle Across the Beaufort Sea[J],2021,126(4).
APA	Brenner S.,Rainville L.,Thomson J.,Cole S.,&Lee C..(2021).Comparing Observations and Parameterizations of Ice-Ocean Drag Through an Annual Cycle Across the Beaufort Sea.Journal of Geophysical Research: Oceans,126(4).
MLA	Brenner S.,et al."Comparing Observations and Parameterizations of Ice-Ocean Drag Through an Annual Cycle Across the Beaufort Sea".Journal of Geophysical Research: Oceans 126.4(2021).