DOI: 10.5194/tc-12-1157-2018
Scopus记录号: 2-s2.0-85045019390
论文题名: Canadian snow and sea ice: Historical trends and projections
作者: Mudryk L ; R ; , Derksen C ; , Howell S ; , Laliberté F ; , Thackeray C ; , Sospedra-Alfonso R ; , Vionnet V ; , Kushner P ; J ; , Brown R
刊名: Cryosphere
ISSN: 19940416
出版年: 2018
卷: 12, 期: 4 起始页码: 1157
结束页码: 1176
语种: 英语
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75387
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
Mudryk L,R,, Derksen C,et al. Canadian snow and sea ice: Historical trends and projections[J]. Cryosphere,2018-01-01,12(4)