气候变化领域集成服务门户(CCPortal): Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)

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DOI	10.5194/tc-11-157-2017
	Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)
	Barrand N.E.; Way R.G.; Bell T.; Sharp M.J.
发表日期	2017
ISSN	19940416
卷号	11 期号:1
英文摘要	The Torngat Mountains National Park, northern Labrador, Canada, contains more than 120 small glaciers: the only remaining glaciers in continental northeast North America. These small cirque glaciers exist in a unique topo-climatic setting, experiencing temperate maritime summer conditions yet very cold and dry winters, and may provide insights into the deglaciation dynamics of similar small glaciers in temperate mountain settings. Due to their size and remote location, very little information exists regarding the health of these glaciers. Just a single study has been published on the contemporary glaciology of the Torngat Mountains, focusing on net mass balances from 1981 to 1984. This paper addresses the extent to which glaciologically relevant climate variables have changed in northern Labrador in concert with 20th-century Arctic warming, and how these changes have affected Torngat Mountain glaciers. Field surveys and remote-sensing analyses were used to measure regional glacier area loss of 27% from 1950 to 2005, substantial rates of ice surface thinning (up to 6mg-1) and volume losses at Abraham, Hidden, and Minaret glaciers, between 2005 and 2011. Glacier mass balances appear to be controlled by variations in winter precipitation and, increasingly, by strong summer and autumn atmospheric warming since the early 1990s, though further observations are required to fully understand mass balance sensitivities. This study provides the first comprehensive contemporary assessment of Labrador glaciers and will inform both regional impact assessments and syntheses of global glacier mass balance. © 2017 The Author(s).
学科领域	arctic environment; cirque; climate change; deglaciation; environmental impact assessment; field survey; glacier mass balance; glaciology; remote sensing; warming; Canada; Labrador; Newfoundland and Labrador; Torngat Mountains
语种	英语
scopus关键词	arctic environment; cirque; climate change; deglaciation; environmental impact assessment; field survey; glacier mass balance; glaciology; remote sensing; warming; Canada; Labrador; Newfoundland and Labrador; Torngat Mountains
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119459
作者单位	School of Geography Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Geography, University of Ottawa, Ottawa, Canada; Department of Geography, Memorial University of Newfoundland, St. John's, Canada; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada
推荐引用方式 GB/T 7714	Barrand N.E.,Way R.G.,Bell T.,et al. Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)[J],2017,11(1).
APA	Barrand N.E.,Way R.G.,Bell T.,&Sharp M.J..(2017).Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada).Cryosphere,11(1).
MLA	Barrand N.E.,et al."Recent changes in area and thickness of Torngat Mountain glaciers (northern Labrador, Canada)".Cryosphere 11.1(2017).