DOI: 10.5194/tc-8-785-2014
Scopus记录号: 2-s2.0-84900032957
论文题名: Snow density climatology across the former USSR
作者: Zhong X ; , Zhang T ; , Wang K
刊名: Cryosphere
ISSN: 19940416
出版年: 2014
卷: 8, 期: 2 起始页码: 785
结束页码: 799
语种: 英语
英文关键词: climatology
; density
; measurement method
; seasonal variation
; snow cover
; spatiotemporal analysis
; Kamchatka
; Kamchatka Peninsula
; Russian Federation
; USSR
英文摘要: Snow density is one of the basic properties used to describe snow cover characteristics, and it is a key factor for linking snow depth and snow water equivalent, which are critical for water resources assessment and modeling inputs. In this study, we used long-term data from groundbased measurements to investigate snow density (bulk density) climatology and its spatiotemporal variations across the former Soviet Union (USSR) from 1966 to 2008. The results showed that the long-term monthly mean snow density was approximately 0.22±0.05 g cm-3 over the study area. The maximum and minimum monthly mean snow density was about 0.33 g cm-3 in June, and 0.14 g cm-3 in October, respectively. Maritime and ephemeral snow had the highest monthly mean snow density, while taiga snow had the lowest. The higher values of monthly snow density were mainly located in the European regions of the former USSR, on the coast of Arctic Russia, and the Kamchatka Peninsula, while the lower snow density occurred in central Siberia. Significant increasing trends of snow density from September through June of the next year were observed, however, the rate of the increase varied with different snow classes. The long-term (1966"2008) monthly and annual mean snow densities had significant decreasing trends, especially during the autumn months. Spatially, significant positive trends in monthly mean snow density lay in the southwestern areas of the former USSR in November and December and gradually expanded in Russia from February through April. Significant negative trends mainly lay in the European Russia and the southern Russia. There was a high correlation of snow density with elevation for tundra snow and snow density was highly correlated with latitude for prairie snow. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74854
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: State Key Lab. of Frozen Soil Eng., Cold and Arid Regions Environ. and Eng. Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China; National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309-0449, United States
Recommended Citation:
Zhong X,, Zhang T,, Wang K. Snow density climatology across the former USSR[J]. Cryosphere,2014-01-01,8(2)