气候变化领域集成服务门户(CCPortal): Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf; Weddell Sea

CCPortal

DOI	10.1029/2020GL089237
	Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf; Weddell Sea
	Daae K.; Hattermann T.; Darelius E.; Mueller R.D.; Naughten K.A.; Timmermann R.; Hellmer H.H.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Understanding changes in Antarctic ice shelf basal melting is a major challenge for predicting future sea level. Currently, warm Circumpolar Deep Water surrounding Antarctica has limited access to the Weddell Sea continental shelf; consequently, melt rates at Filchner-Ronne Ice Shelf are low. However, large-scale model projections suggest that changes to the Antarctic Slope Front and the coastal circulation may enhance warm inflows within this century. We use a regional high-resolution ice shelf cavity and ocean circulation model to explore forcing changes that may trigger this regime shift. Our results suggest two necessary conditions for supporting a sustained warm inflow into the Filchner Ice Shelf cavity: (i) an extreme relaxation of the Antarctic Slope Front density gradient and (ii) substantial freshening of the dense shelf water. We also find that the on-shelf transport over the western Weddell Sea shelf is sensitive to the Filchner Trough overflow characteristics. ©2020. The Authors.
英文关键词	Sea level; Antarctic ice shelves; Coastal circulation; Continental shelves; Dense shelf water; Density gradients; High resolution; Large-scale modeling; Ocean circulation models; Ice; basal melting; coastal circulation; continental shelf; ice shelf; inflow; oceanic circulation; sea level change; shelf sea; Antarctica; Filchner-Ronne Ice Shelf; Ronne Ice Shelf; Southern Ocean; Weddell Sea; West Antarctica
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/169462
作者单位	Geophysical Institute, Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway; Norwegian Polar Institute, Tromsø, Norway; Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada; British Antarctic Survey, Cambridge, United Kingdom; Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, Germany
推荐引用方式 GB/T 7714	Daae K.,Hattermann T.,Darelius E.,et al. Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf; Weddell Sea[J],2020,47(22).
APA	Daae K..,Hattermann T..,Darelius E..,Mueller R.D..,Naughten K.A..,...&Hellmer H.H..(2020).Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf; Weddell Sea.Geophysical Research Letters,47(22).
MLA	Daae K.,et al."Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf; Weddell Sea".Geophysical Research Letters 47.22(2020).