气候变化领域集成服务门户(CCPortal): Canadian snow and sea ice: Historical trends and projections

CCPortal

DOI	10.5194/tc-12-1157-2018
	Canadian snow and sea ice: Historical trends and projections
	Mudryk L.R.; Derksen C.; Howell S.; Laliberté F.; Thackeray C.; Sospedra-Alfonso R.; Vionnet V.; Kushner P.J.; Brown R.
发表日期	2018
ISSN	19940416
卷号	12 期号:4
英文摘要	The Canadian Sea Ice and Snow Evolution (CanSISE) Network is a climate research network focused on developing and applying state of the art observational data to advance dynamical prediction, projections, and understanding of seasonal snow cover and sea ice in Canada and the circumpolar Arctic. Here, we present an assessment from the CanSISE Network on trends in the historical record of snow cover (fraction, water equivalent) and sea ice (area, concentration, type, and thickness) across Canada. We also assess projected changes in snow cover and sea ice likely to occur by mid-century, as simulated by the Coupled Model Intercomparison Project Phase 5 (CMIP5) suite of Earth system models. The historical datasets show that the fraction of Canadian land and marine areas covered by snow and ice is decreasing over time, with seasonal and regional variability in the trends consistent with regional differences in surface temperature trends. In particular, summer sea ice cover has decreased significantly across nearly all Canadian marine regions, and the rate of multi-year ice loss in the Beaufort Sea and Canadian Arctic Archipelago has nearly doubled over the last 8 years. The multi-model consensus over the 2020-2050 period shows reductions in fall and spring snow cover fraction and sea ice concentration of 5-10ĝ€% per decade (or 15-30ĝ€% in total), with similar reductions in winter sea ice concentration in both Hudson Bay and eastern Canadian waters. Peak pre-melt terrestrial snow water equivalent reductions of up to 10ĝ€% per decade (30ĝ€% in total) are projected across southern Canada. © Author(s) 2018.
学科领域	CMIP; data set; historical record; ice cover; regional climate; sea ice; seasonal variation; snow cover; snow water equivalent; surface temperature; Arctic Ocean; Beaufort Sea; Canada; Canadian Arctic; Hudson Bay
语种	英语
scopus关键词	CMIP; data set; historical record; ice cover; regional climate; sea ice; seasonal variation; snow cover; snow water equivalent; surface temperature; Arctic Ocean; Beaufort Sea; Canada; Canadian Arctic; Hudson Bay
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/119187
作者单位	Climate Research Division, Environment and Climate Change Canada, Toronto, Canada; Department of Geography and Environmental Management, University of Waterloo, Waterloo, Canada; Climate Research Division, Environment and Climate Change Canada, Victoria, Canada; Centre National de Recherches Météorologiques, Centre d'Etudes de la Neige, Grenoble, France; Department of Physics, University of Toronto, Toronto, Canada; Climate Research Division, Environment and Climate Change Canada, Montréal, Canada
推荐引用方式 GB/T 7714	Mudryk L.R.,Derksen C.,Howell S.,et al. Canadian snow and sea ice: Historical trends and projections[J],2018,12(4).
APA	Mudryk L.R..,Derksen C..,Howell S..,Laliberté F..,Thackeray C..,...&Brown R..(2018).Canadian snow and sea ice: Historical trends and projections.Cryosphere,12(4).
MLA	Mudryk L.R.,et al."Canadian snow and sea ice: Historical trends and projections".Cryosphere 12.4(2018).