globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063898
论文题名:
Effects of temperature and precipitation on snowpack variability in the Central Rocky Mountains as a function of elevation
作者: Sospedra-Alfonso R.; Melton J.R.; Merryfield W.J.
刊名: Geophysical Research Letters
ISSN: 0094-9619
EISSN: 1944-9350
出版年: 2015
卷: 42, 期:11
起始页码: 4429
结束页码: 4438
语种: 英语
英文关键词: alpine snowpack ; Central Rocky Mountains ; climate-driven snowpack ; Northern Idaho-Montana Rockies ; SNOTEL ; snowpack variability
Scopus关键词: Economics ; Landforms ; Snow ; Temperature ; alpine snowpack ; climate-driven snowpack ; Montana ; Rocky Mountains ; SNOTEL ; snowpack variability ; Atmospheric temperature
英文摘要: We employ a regression-based methodology to study the impact of temperature and precipitation on snowpack variability as a function of elevation in the Central Rocky Mountains. Because of the broad horizontal coverage and thermal heterogeneity of the measurement sites employed, we introduce an elevation correction based on the sites' climatological temperature. For the elevation range investigated (1295-2256 m), and assuming an average atmospheric lapse rate of -6.5°C/km, we find a mostly linear relationship between effective elevation and correlation of temperature or precipitation with snow water equivalent and snowpack duration. We estimate a threshold elevation, 1560 ± 120 m, below (above) which temperature (precipitation) is the main driver of the snowpack. This threshold elevation is robust under a range of assumed atmospheric lapse rates. Locations below this elevation are likely to be affected by projected rising temperatures, with important effects on ecosystems and economic activities dependent on snow. ©2015. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934326272&doi=10.1002%2f2015GL063898&partnerID=40&md5=93cf25b83e4f07ed885083a571b46644
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9234
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Canadian Centre for Climate Modelling and Analysis, Environment Canada, University of Victoria, Victoria, BC, Canada

Recommended Citation:
Sospedra-Alfonso R.,Melton J.R.,Merryfield W.J.. Effects of temperature and precipitation on snowpack variability in the Central Rocky Mountains as a function of elevation[J]. Geophysical Research Letters,2015-01-01,42(11).
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