Snowpack variability and trends at long-term stations in northern Colorado, USA

被引:19
|
作者
Fassnacht, S. R. [1 ,2 ,3 ]
Hultstrand, M. [1 ,4 ]
机构
[1] Colorado State Univ, ESS Watershed Sci, Ft Collins, CO 80523 USA
[2] Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA
[3] Colorado State Univ, Geospatial Centroid, Ft Collins, CO 80523 USA
[4] Nat Resources Conservat Serv, Snow Survey Off, Denver, CO 80225 USA
来源
HYDROLOGIC NON-STATIONARITY AND EXTRAPOLATING MODELS TO PREDICT THE FUTURE | 2015年 / 371卷
关键词
DEPTH;
D O I
10.5194/piahs-371-131-2015
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The individual measurements from snowcourse stations were digitized for six stations across northern Colorado that had up to 79 years of record (1936 to 2014). These manual measurements are collected at the first of the month from February through May, with additional measurements in January and June. This dataset was used to evaluate the variability in snow depth and snow water equivalent (SWE) across a snowcourse, as well as trends in snowpack patterns across the entire period of record and over two halves of the record (up to 1975 and from 1976). Snowpack variability is correlated to depth and SWE. The snow depth variability is shown to be highly correlated with average April snow depth and day of year. Depth and SWE were found to be significantly decreasing over the entire period of record at two stations, while at another station the significant trends were an increase over the first half of the record and a decrease over the second half. Variability tended to decrease with time, when significant.
引用
收藏
页码:131 / 136
页数:6
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