Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074039 |
Snow accumulation variability on a West Antarctic ice stream observed with GPS reflectometry, 2007-2017 | |
Siegfried, M. R.1,2; Medley, B.3; Larson, K. M.4; Fricker, H. A.1; Tulaczyk, S.5 | |
2017-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Land ice loss from Antarctica is a significant and accelerating contribution to global sea level rise; however, Antarctic mass balance estimates are complicated by insufficient knowledge of surface mass balance processes such as snow accumulation. Snow accumulation is challenging to observe on a continental scale and in situ data are sparse, so we largely rely on estimates from atmospheric models. Here we employ a novel technique, GPS interferometric reflectometry (GPS-IR), to measure upper (<2 m) firn column thickness changes across a 23-station GPS array in West Antarctica. We compare the results with antenna heights measured in situ to establish the method's daily uncertainty (0.06 m) and with output from two atmospheric reanalysis products to categorize spatial and temporal variability of net snow accumulation. GPS-IR is an effective technique for monitoring surface mass balance processes that can be applied to both historic GPS data sets and future experiments to provide critical in situ observations of processes driving surface height evolution. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000029 |
WOS关键词 | SURFACE MASS-BALANCE ; WHILLANS ; RADAR ; DENSIFICATION ; FLUCTUATIONS ; DENSITY ; MODEL ; SHELF |
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/27870 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif San Diego, Scripps Inst Oceanog, Inst Geophys & Planetary Phys, La Jolla, CA 92093 USA; 2.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA; 3.NASA Goddard Space Flight Ctr, Cryospher Sci Lab, Greenbelt, MD USA; 4.Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA; 5.Univ Calif Santa Cruz, Earth & Planetary Sci, Santa Cruz, CA 95064 USA |
推荐引用方式 GB/T 7714 | Siegfried, M. R.,Medley, B.,Larson, K. M.,et al. Snow accumulation variability on a West Antarctic ice stream observed with GPS reflectometry, 2007-2017[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Siegfried, M. R.,Medley, B.,Larson, K. M.,Fricker, H. A.,&Tulaczyk, S..(2017).Snow accumulation variability on a West Antarctic ice stream observed with GPS reflectometry, 2007-2017.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Siegfried, M. R.,et al."Snow accumulation variability on a West Antarctic ice stream observed with GPS reflectometry, 2007-2017".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
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