Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071999 |
Snowpack density modeling is the primary source of uncertainty when mapping basin-wide SWE with lidar | |
Raleigh, Mark S.1,2,3; Small, Eric E.1 | |
2017-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Lidar-measured snow depth and model-estimated snow density can be combined to map snow water equivalent (SWE). This approach has the potential to transform research and operations in snow-dominated regions, but sources of uncertainty need quantification. We compared relative uncertainty contributions from lidar depth measurement and density modeling to SWE estimation, utilizing lidar data from the Tuolumne Basin (California). We found a density uncertainty of 0.048g cm(-3) by comparing output from four models. For typical lidar depth uncertainty (8cm), density estimation was the dominant source of SWE uncertainty when snow exceeded 60cm depth, representing >70% of snow cover and 90% of SWE volume throughout the basin in both 2014 and 2016. Density uncertainty accounts for 75% of the SWE uncertainty for a broader range of snowpack characteristics, as measured at SNOTEL stations throughout the western U.S. Reducing density uncertainty is essential for improved SWE mapping with lidar. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401847500031 |
WOS关键词 | WESTERN UNITED-STATES ; RESIDUE-SOIL SYSTEM ; WATER EQUIVALENT ; SIERRA-NEVADA ; SIMULTANEOUS HEAT ; ENERGY EXCHANGE ; ALPINE TERRAIN ; SEASONAL SNOW ; LOW-COST ; DEPTH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27997 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA; 2.Univ Colorado, CIRES, Boulder, CO 80309 USA; 3.Univ Colorado, NSIDC, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Raleigh, Mark S.,Small, Eric E.. Snowpack density modeling is the primary source of uncertainty when mapping basin-wide SWE with lidar[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(8). |
APA | Raleigh, Mark S.,&Small, Eric E..(2017).Snowpack density modeling is the primary source of uncertainty when mapping basin-wide SWE with lidar.GEOPHYSICAL RESEARCH LETTERS,44(8). |
MLA | Raleigh, Mark S.,et al."Snowpack density modeling is the primary source of uncertainty when mapping basin-wide SWE with lidar".GEOPHYSICAL RESEARCH LETTERS 44.8(2017). |
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