Scopus记录号: 2-s2.0-85061932481
论文题名: Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2
作者: Brunt K.M. ; Neumann T.A. ; Larsen C.F.
刊名: Cryosphere
ISSN: 19940416
出版年: 2019
卷: 13, 期: 2 起始页码: 579
结束页码: 590
语种: 英语
英文摘要: We conducted a 750 km kinematic GPS survey, referred to as the 88S Traverse, based out of South Pole Station, Antarctica, between December 2017 and January 2018. This ground-based survey was designed to validate spaceborne altimetry and airborne altimetry developed at NASA. The 88S Traverse intersects 20 % of the ICESat-2 satellite orbits on a route that has been flown by two different Operation IceBridge airborne laser altimeters: the Airborne Topographic Mapper (ATM; 26 October 2014) and the University of Alaska Fairbanks (UAF) Lidar (30 November and 3 December 2017). Here we present an overview of the ground-based GPS data quality and a quantitative assessment of the airborne laser altimetry over a flat section of the ice sheet interior. Results indicate that the GPS data are internally consistent (1.1±4.1 cm). Relative to the ground-based 88S Traverse data, the elevation biases for ATM and the UAF lidar range from ĝ'9.5 to 3.6 cm, while surface measurement precisions are equal to or better than 14.1 cm. These results suggest that the ground-based GPS data and airborne altimetry data are appropriate for the validation of ICESat-2 surface elevation data. © Author(s) 2019. 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122666
Appears in Collections: 气候变化事实与影响
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作者单位: Earth System Science Interdisciplinary Center (ESSIC), University of Maryland, College Park, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Geophysical Institute, University of Alaska, Fairbanks, AK, United States
Recommended Citation:
Brunt K.M.,Neumann T.A.,Larsen C.F.. Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2[J]. Cryosphere,2019-01-01,13(2)