Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024533 |
Comparing Aerial Lidar Observations With Terrestrial Lidar and Snow-Probe Transects From NASA's 2017 SnowEx Campaign | |
Currier, William Ryan1; Pflug, Justin1; Mazzotti, Giulia2; Jonas, Tobias2; Deems, Jeffrey S.3,4; Bormann, Kat J.5; Painter, Thomas H.5; Hiemstra, Christopher A.6; Gelvin, Arthur6; Uhlmann, Zach7; Spaete, Lucas7; Glenn, Nancy F.7; Lundquist, Jessica D.1 | |
2019-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:7页码:6285-6294 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Switzerland |
英文摘要 | NASA's 2017 SnowEx field campaign at Grand Mesa, CO, generated Airborne Laser Scans (ALS), Terrestrial Laser Scans (TLS), and snow-probe transects, which allowed for a comparison between snow depth measurement techniques. At six locations, comparisons between gridded ALS and TLS observations, at 1-m resolution, had a median snow depth difference of 5 cm, root-mean-square difference of 16 cm, mean-absolute difference of 10 cm, and 3-cm difference in standard deviation. ALS generally had greater but similar snow depth values to TLS, and results were not sensitive to the gridded cell size between 0.5 and 5 m. The greatest disagreements were where snow-off TLS scans had shrubs and high incidence angles, leading to deeper snow depths (>10 cm) from ALS than TLS. The low vegetation and oblique angles caused occlusion in the TLS data and thus produced higher snow-off bare Earth models relative to the ALS. Furthermore, in subcanopy areas where both ALS and TLS data existed, snow depth differences were comparable to differences in the open. Meanwhile, median values from 52 snow-probe transects and near-coincident ALS data had a mean difference of 6 cm, root-mean-square difference of 8 cm, mean-absolute difference of 7 cm, and a mean difference in the standard deviation of 1 cm. Snow depth probes had greater but similar snow depth values to ALS. Therefore, based on comparisons with TLS and snow depth probes, ALS captured snow depth magnitude with better than or equal agreement to what has been reported in previous studies and showed the ability to capture high-resolution spatial variability. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481444700062 |
WOS关键词 | SOUTHERN SIERRA-NEVADA ; DEPTH DISTRIBUTION ; SCANNING LIDAR ; VEGETATION ; FOREST ; ACCUMULATION ; ELEVATION ; ACCURACY ; ERRORS |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/184883 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA; 2.WSL Inst Snow & Avalanche Res SLF, Davos, Switzerland; 3.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO USA; 4.Natl Snow & Ice Data Ctr, Boulder, CO USA; 5.CALTECH, Jet Prop Lab, Pasadena, CA USA; 6.Cold Reg Res & Engn Lab, Ft Wainwright, AK USA; 7.Boise State Univ, Dept Geosci, Boise, ID 83725 USA |
推荐引用方式 GB/T 7714 | Currier, William Ryan,Pflug, Justin,Mazzotti, Giulia,et al. Comparing Aerial Lidar Observations With Terrestrial Lidar and Snow-Probe Transects From NASA's 2017 SnowEx Campaign[J]. WATER RESOURCES RESEARCH,2019,55(7):6285-6294. |
APA | Currier, William Ryan.,Pflug, Justin.,Mazzotti, Giulia.,Jonas, Tobias.,Deems, Jeffrey S..,...&Lundquist, Jessica D..(2019).Comparing Aerial Lidar Observations With Terrestrial Lidar and Snow-Probe Transects From NASA's 2017 SnowEx Campaign.WATER RESOURCES RESEARCH,55(7),6285-6294. |
MLA | Currier, William Ryan,et al."Comparing Aerial Lidar Observations With Terrestrial Lidar and Snow-Probe Transects From NASA's 2017 SnowEx Campaign".WATER RESOURCES RESEARCH 55.7(2019):6285-6294. |
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