气候变化领域集成服务门户(CCPortal): Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017

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DOI	10.1029/2020GL088119
	Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017
	Ryan S.; Hellmer H.H.; Janout M.; Darelius E.; Vignes L.; Schröder M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	The Filchner-Ronne Ice Shelf, fringing the southern Weddell Sea, is Antarctica's second largest ice shelf. At present, basal melt rates are low due to active dense water formation; however, model projections suggest a drastic increase in the future due to enhanced inflow of open-ocean warm water. Mooring observations from 2014 to 2016 along the eastern flank of the Filchner Trough (76°S) revealed a distinct seasonal cycle with inflow if Warm Deep Water during summer and autumn. Here we present extended time series showing an exceptionally warm and long inflow in 2017, with maximum temperatures exceeding 0.5°C. Warm temperatures persisted throughout winter, associated with a fresh anomaly, which lead to a change in stratification over the shelf, favoring an earlier inflow in the following summer. We suggest that the fresh anomaly developed upstream after anomalous summer sea ice melting and contributed to a shoaling of the shelf break thermocline. ©2020. The Authors.
英文关键词	Sea ice; Dense waters; Ice shelves; Maximum temperature; Sea ice melting; Seasonal cycle; Warm deep waters; Warm temperatures; Weddell Sea; Stream flow; deep water; ice shelf; mooring system; open ocean; sea ice; time series; trough; Southern Ocean; Weddell Sea
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170174
作者单位	Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Now at Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Geophysical Institute, University of Bergen, Bergen, Norway; Laboratoire d'Océanographie et du Climat, Sorbonne Université/CNRS, Paris, France
推荐引用方式 GB/T 7714	Ryan S.,Hellmer H.H.,Janout M.,et al. Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017[J],2020,47(13).
APA	Ryan S.,Hellmer H.H.,Janout M.,Darelius E.,Vignes L.,&Schröder M..(2020).Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017.Geophysical Research Letters,47(13).
MLA	Ryan S.,et al."Exceptionally Warm and Prolonged Flow of Warm Deep Water Toward the Filchner-Ronne Ice Shelf in 2017".Geophysical Research Letters 47.13(2020).