Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL085363 |
Significant Spatial Variability in Radar-Derived West Antarctic Accumulation Linked to Surface Winds and Topography | |
Dattler, Marissa E.1,2,3; Lenaerts, Jan T. M.1; Medley, Brooke3 | |
2019-11-25 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:22页码:13126-13134 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Across the Antarctic Ice Sheet, accumulation heavily influences firn compaction and surface height changes. Therefore, accumulation varies over short distances (<25 km), complicating the derivation of ice sheet mass changes from altimetry and reducing how accurately field measurements can be spatially extrapolated. However, current atmospheric reanalyses have grid spacings (>25 km) that are too coarse to resolve this variability. To address this limitation, we construct a fine-scale accumulation product from airborne snow radar observations by superimposing along-track fluctuations in accumulation onto an atmospheric reanalysis product. Our resulting airborne product reflects large-scale (>25 km) orographic precipitation patterns while providing robust and unprecedented insight into Antarctic accumulation variability on subgrid scales. On these smaller scales, we find significant, regionally dependent accumulation variability (sigma(relative)>40%). This variability in accumulation is correlated with variability in topographic surface slope in the wind direction (p<0.01), confirming that subgrid-scale accumulation variability is driven by snow redistribution by wind. |
英文关键词 | surface mass balance snow accumulation snow erosion airborne radar Antarctic Ice Sheet near-surface winds |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498353900001 |
WOS关键词 | GROUND-PENETRATING RADAR ; MASS-BALANCE ; SNOW-ACCUMULATION ; AIRBORNE-RADAR ; GREENLAND ; ELEVATION ; MODEL ; PLATEAU ; RATES ; FIELD |
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/225091 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA; 2.Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA; 3.NASA, Goddard Space Flight Ctr, Cryospher Sci Lab, Greenbelt, MD 20771 USA |
推荐引用方式 GB/T 7714 | Dattler, Marissa E.,Lenaerts, Jan T. M.,Medley, Brooke. Significant Spatial Variability in Radar-Derived West Antarctic Accumulation Linked to Surface Winds and Topography[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(22):13126-13134. |
APA | Dattler, Marissa E.,Lenaerts, Jan T. M.,&Medley, Brooke.(2019).Significant Spatial Variability in Radar-Derived West Antarctic Accumulation Linked to Surface Winds and Topography.GEOPHYSICAL RESEARCH LETTERS,46(22),13126-13134. |
MLA | Dattler, Marissa E.,et al."Significant Spatial Variability in Radar-Derived West Antarctic Accumulation Linked to Surface Winds and Topography".GEOPHYSICAL RESEARCH LETTERS 46.22(2019):13126-13134. |
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