气候变化领域集成服务门户(CCPortal): Changes in Atlantic Water Circulation Patterns and Volume Transports North of Svalbard Over the Last 12 Years (2008

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DOI	10.1029/2020JC016825
	Changes in Atlantic Water Circulation Patterns and Volume Transports North of Svalbard Over the Last 12 Years (2008–2020)
	Athanase M.; Provost C.; Artana C.; Pérez-Hernández M.D.; Sennéchael N.; Bertosio C.; Garric G.; Lellouche J.-M.; Prandi P.
发表日期	2021
ISSN	21699275
卷号	126 期号:1
英文摘要	Atlantic Water (AW) enters the Arctic through Fram Strait as the West Spitsbergen Current (WSC). When reaching the south of Yermak Plateau, the WSC splits into the Svalbard, Yermak Pass, and Yermak Branches. Downstream of Yermak Plateau, AW pathways remain unclear and uncertainties persist on how AW branches eventually merge and contribute to the boundary current along the continental slope. We took advantage of the good performance of the 1/12° Mercator Ocean model in the Western Nansen Basin (WNB) to examine the AW circulation and volume transports in the area. The model showed that the circulation changed in 2008–2020. The Yermak Branch (YB) strengthened over the northern Yermak Plateau, feeding the Return YB along the eastern flank of the Plateau. West of Yermak Plateau, the Transpolar Drift likely shifted westward while AW recirculations progressed further north. Downstream of the Yermak Plateau, an offshore current developed above the 3,800 m isobath, fed by waters from the Yermak Plateau tip. East of 18°E, enhanced mesoscale activity from the boundary current injected additional AW basin-ward, further contributing to the offshore circulation. A recurrent anticyclonic circulation developed in the Sofia Deep, which also occasionally fed the western part of the offshore flow. The intensification of the circulation coincided with an overall warming in the upper WNB (0–1,000 m), consistent with the progression of AW. This regional description of the changing circulation provides a background for the interpretation of upcoming observations. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Arctic Ocean; Atlantic Water; changes; Circulation; operational model; volume transport
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/186515
作者单位	Laboratoire LOCEAN-IPSL, Sorbonne Université (UPMC, Univ. Paris 6), CNRS, IRD, MNHN, Paris, France; MERCATOR-OCEAN, Parc Technologique du Canal, Ramonville Saint Agne, France; Unidad de Océano y Clima, Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC-CSIC, Las Palmas de Gran Canaria, Spain; CLS, Parc Technologique du Canal, Ramonville Saint-Agne, France
推荐引用方式 GB/T 7714	Athanase M.,Provost C.,Artana C.,等. Changes in Atlantic Water Circulation Patterns and Volume Transports North of Svalbard Over the Last 12 Years (2008–2020)[J],2021,126(1).
APA	Athanase M..,Provost C..,Artana C..,Pérez-Hernández M.D..,Sennéchael N..,...&Prandi P..(2021).Changes in Atlantic Water Circulation Patterns and Volume Transports North of Svalbard Over the Last 12 Years (2008–2020).Journal of Geophysical Research: Oceans,126(1).
MLA	Athanase M.,et al."Changes in Atlantic Water Circulation Patterns and Volume Transports North of Svalbard Over the Last 12 Years (2008–2020)".Journal of Geophysical Research: Oceans 126.1(2021).