气候变化领域集成服务门户(CCPortal): Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2

CCPortal

DOI	10.5194/tc-13-579-2019
	Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2
	Brunt K.M.; Neumann T.A.; Larsen C.F.
发表日期	2019
ISSN	19940416
EISSN	13
起始页码	579
结束页码	590
卷号	13 期号:2
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.
学科领域	airborne survey; airborne thematic mapper; altimeter; altimetry; assessment method; data quality; elevation; GPS; ground-based measurement; ice sheet; ICESat; kinematics; lidar; model validation; precision; satellite data; Alaska; Antarctica; East Antarctica; Fairbanks; South Pole; United States
语种	英语
scopus关键词	airborne survey; airborne thematic mapper; altimeter; altimetry; assessment method; data quality; elevation; GPS; ground-based measurement; ice sheet; ICESat; kinematics; lidar; model validation; precision; satellite data; Alaska; Antarctica; East Antarctica; Fairbanks; South Pole; United States
来源期刊	The Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118926
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
推荐引用方式 GB/T 7714	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],2019,13(2).
APA	Brunt K.M.,Neumann T.A.,&Larsen C.F..(2019).Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2.The Cryosphere,13(2).
MLA	Brunt K.M.,et al."Assessment of altimetry using ground-based GPS data from the 88S Traverse, Antarctica, in support of ICESat-2".The Cryosphere 13.2(2019).