气候变化领域集成服务门户(CCPortal): Remote Control of Filchner-Ronne Ice Shelf Melt Rates by the Antarctic Slope Current

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DOI	10.1029/2020JC016550
	Remote Control of Filchner-Ronne Ice Shelf Melt Rates by the Antarctic Slope Current
	Bull C.Y.S.; Jenkins A.; Jourdain N.C.; Vaňková I.; Holland P.R.; Mathiot P.; Hausmann U.; Sallée J.-B.
发表日期	2021
ISSN	21699275
卷号	126 期号:2
英文摘要	Recent work on the Filchner-Ronne Ice Shelf (FRIS) system has shown that a redirection of the coastal current in the southeastern Weddell Sea could lead to a regime change in which an intrusion of warm Modified Circumpolar Deep Water results in large increases in the basal melt rate. Work to date has mostly focused on how increases in the Modified Circumpolar Deep Water crossing the continental shelf break leads directly to heat driven changes in melting in the ice-shelf cavity. In this study, we introduce a Weddell Sea regional ocean model configuration with static ice shelves. We evaluate a reference simulation against radar observations of melting, and find good agreement between the simulated and observed mean melt rates. We analyze 28 sensitivity experiments that simulate the influence of changes in remote water properties of the Antarctic Slope Current on basal melting in the FRIS. We find that remote changes in salinity quasi-linearly modulate the mean FRIS net melt rate. Changes in remote temperature quadratically vary the FRIS net melt rate. In both salinity and temperature perturbations, the response is rapid and transient, with a recovery time-scale of 5–15 years dependent on the size/type of perturbation. We show that the two types of perturbations lead to different changes on the continental shelf, and that ultimately different factors modulate the melt rates in the FRIS cavity. We discuss how these results, are relevant for ocean hindcast simulations, sea level, and melt rate projections of the FRIS. © 2021. The Authors.
英文关键词	Antarctic Slope Current; Antarctica; Filchner-Ronne; ice shelf; NEMO; Weddell Sea
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/186484
作者单位	British Antarctic Survey, Cambridge, United Kingdom; Department of Geography and Environmental Sciences, Northumbria University, Newcastle Upon Tyne, United Kingdom; Universite Grenoble Alpes/CNRS/IRD/G-INP, IGE, Grenoble, France; Met Office, Exeter, United Kingdom; Sorbonne-Université, CNRS/IRD/MNHN (LOCEAN UMR 7159), Paris, France
推荐引用方式 GB/T 7714	Bull C.Y.S.,Jenkins A.,Jourdain N.C.,et al. Remote Control of Filchner-Ronne Ice Shelf Melt Rates by the Antarctic Slope Current[J],2021,126(2).
APA	Bull C.Y.S..,Jenkins A..,Jourdain N.C..,Vaňková I..,Holland P.R..,...&Sallée J.-B..(2021).Remote Control of Filchner-Ronne Ice Shelf Melt Rates by the Antarctic Slope Current.Journal of Geophysical Research: Oceans,126(2).
MLA	Bull C.Y.S.,et al."Remote Control of Filchner-Ronne Ice Shelf Melt Rates by the Antarctic Slope Current".Journal of Geophysical Research: Oceans 126.2(2021).