气候变化领域集成服务门户(CCPortal): The Atlantic Water Boundary Current in the Chukchi Borderland and Southern Canada Basin

CCPortal

DOI	10.1029/2020JC016197
	The Atlantic Water Boundary Current in the Chukchi Borderland and Southern Canada Basin
	Li J.; Pickart R.S.; Lin P.; Bahr F.; Arrigo K.R.; Juranek L.; Yang X.-Y.
发表日期	2020
ISSN	21699275
卷号	125 期号:8
英文摘要	Synoptic shipboard measurements, together with historical hydrographic data and satellite data, are used to elucidate the detailed structure of the Atlantic Water (AW) boundary current system in the southern Canada Basin and its connection to the upstream source of AW in the Chukchi Borderland. Nine high-resolution occupations of a transect extending from the Beaufort shelf to the deep basin near 152°W, taken between 2003 and 2018, reveal that there are two branches of the AW boundary current that flow beneath and counter to the Beaufort Gyre. Each branch corresponds to a warm temperature core and transports comparable amounts of Fram Strait Branch Water between roughly 200–700 m depth, although they are characterized by a different temperature/salinity (T/S) structure. The mean volume flux of the combined branches is 0.87 ± 0.13 Sv. Using the historical hydrographic data, the two branches are tracked upstream by their temperature cores and T/S signatures. This sheds new light on how the AW negotiates the Chukchi Borderland and why two branches emerge from this region. Lastly, the propagation of warm temperature anomalies through the region is quantified and shown to be consistent with the deduced circulation scheme. © 2020. American Geophysical Union. All Rights Reserved.
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/186716
作者单位	State Key Laboratory of Marine Environmental Science, and College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Earth System Science, Stanford University, Stanford, CA, United States; College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
推荐引用方式 GB/T 7714	Li J.,Pickart R.S.,Lin P.,et al. The Atlantic Water Boundary Current in the Chukchi Borderland and Southern Canada Basin[J],2020,125(8).
APA	Li J..,Pickart R.S..,Lin P..,Bahr F..,Arrigo K.R..,...&Yang X.-Y..(2020).The Atlantic Water Boundary Current in the Chukchi Borderland and Southern Canada Basin.Journal of Geophysical Research: Oceans,125(8).
MLA	Li J.,et al."The Atlantic Water Boundary Current in the Chukchi Borderland and Southern Canada Basin".Journal of Geophysical Research: Oceans 125.8(2020).