Arid
DOI10.1080/11956860.2021.1898775
New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada
Royer, Alain; Domine, Florent; Roy, Alexandre; Langlois, Alexandre; Marchand, Nicolas; Davesne, Gautier
通讯作者Royer, A (corresponding author), Univ Sherbrooke, Ctr Applicat & Rech Teledetect CARTEL, Sherbrooke, PQ, Canada. ; Royer, A (corresponding author), Ctr Etud Nord, Quebec City, PQ, Canada.
来源期刊ECOSCIENCE
ISSN1195-6860
EISSN2376-7626
出版年2021-04
英文摘要Changes in mass, extent, duration, and physical properties of snow are key elements for studying associated climate change feedbacks in northern regions. In this study, we analyzed snowpack physical properties along a 'mega' transect from 47 degrees N to 83 degrees N (4,000 km) in northeastern Canada, which includes marked transitions between ecozones from boreal forest to subarctic and arctic ecosystems. Our unique dataset of 391 detailed snowpits acquired over the last 20 years, complemented with snow data from weather stations, shows that snowpack properties such as snow water equivalent, snow depth, density, grain size and basal depth hoar fraction (DHF) are strongly linked to vegetation type. Based on these results, we propose an updated classification of snow types in three classes: boreal forest snow (47-58 degrees N), tundra snow (58-74 degrees N) and polar desert snow (74-83 degrees N), which is more appropriate to the study area than the general north hemisphere classification commonly used. We also show that shrub presence along the transect contributes to a significant increase in DHF development which contributes most strongly to the thermal insulation properties of the snowpack. Overall, our analysis suggests that snow-vegetation interactions have a positive feedback effect on warming at northern latitudes.
英文关键词Latitudinal gradient snowpack properties snow– vegetation interaction snow cover classification
类型Article ; Early Access
语种英语
开放获取类型hybrid
收录类别SCI-E
WOS记录号WOS:000644267100001
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/352132
作者单位[Royer, Alain; Langlois, Alexandre; Marchand, Nicolas] Univ Sherbrooke, Ctr Applicat & Rech Teledetect CARTEL, Sherbrooke, PQ, Canada; [Royer, Alain; Domine, Florent; Roy, Alexandre; Langlois, Alexandre; Davesne, Gautier] Ctr Etud Nord, Quebec City, PQ, Canada; [Domine, Florent] Univ Laval Canada, Takuvik Joint Int Lab, Quebec City, PQ, Canada; [Domine, Florent] CNRS INSU France, Quebec City, PQ, Canada; [Domine, Florent] Univ Laval, Dept Chem, Quebec City, PQ, Canada; [Roy, Alexandre] Univ Quebec Trois Rivieres, Dept Sci & Environm, Trois Rivieres, PQ, Canada; [Davesne, Gautier] Univ Montreal, Dept Geog, Montreal, PQ, Canada
推荐引用方式
GB/T 7714
Royer, Alain,Domine, Florent,Roy, Alexandre,et al. New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada[J],2021.
APA Royer, Alain,Domine, Florent,Roy, Alexandre,Langlois, Alexandre,Marchand, Nicolas,&Davesne, Gautier.(2021).New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada.ECOSCIENCE.
MLA Royer, Alain,et al."New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada".ECOSCIENCE (2021).
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