On the Performance of Sentinel-3 Altimetry Over New Reservoirs: Approaches to Determine Onboard A Priori Elevation

doi:10.1029/2020GL088770

	On the Performance of Sentinel-3 Altimetry Over New Reservoirs: Approaches to Determine Onboard A Priori Elevation
	Zhang, Xingxing 1,2,3; Jiang, Liguang 2; Kittel, Cecile M. M.2; Yao, Zhijun 1; Nielsen, Karina 4; Liu, Zhaofei 1; Wang, Rui 1; Liu, Jun 2; Andersen, Ole B.4; Bauer-Gottwein, Peter 2
刊名	GEOPHYSICAL RESEARCH LETTERS
	2020-09-16
卷号	47 期号:17 页码:11
关键词	radar altimetry water surface elevation reservoir open-loop tracking inland water data acquisition
ISSN号	0094-8276
DOI	10.1029/2020GL088770
通讯作者	Jiang, Liguang(ljia@env.dtu.dk)
英文摘要	Satellite radar altimetry has become an important data source supplementing in situ water level. For practical reasons, a radar altimeter can only record reflected echoes within its range window. Therefore, water surface elevation must fall within the range window. To this end, the Sentinel-3 radar altimetry mission is configured with a new tracking function (i.e., open loop) to position its range window based on an onboard a priori elevation of ground targets. We found that Sentinel-3 is unable to observe recently built reservoirs due to the incorrect onboard elevations. To overcome this issue, four approaches are proposed to improve the a priori elevation for inland water bodies, particularly reservoirs. These approaches can significantly increase data availability of Sentinel-3 over reservoirs and can be used to prepare the onboard elevations of reservoirs and lakes for future missions such as Sentinel-6, Sentinel-3C/-3D, and the Surface Water and Ocean Topography (SWOT) mission.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20060202] ; Innovation Fund Denmark (Innovationsfonden)[8087-00002B] ; Danida Fellowship Centre[18-M01-DTU] ; Chinese Scholarship Council
WOS关键词	WATER-SURFACE ELEVATION ; HYDROLOGICAL MODEL ; LEVEL VARIATIONS ; RIVER ; LAKE ; VALIDATION ; STORAGE ; VOLUME ; DAM
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000572406100010
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Innovation Fund Denmark (Innovationsfonden) ; Danida Fellowship Centre ; Chinese Scholarship Council
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156949]
专题	中国科学院地理科学与资源研究所
通讯作者	Jiang, Liguang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Resources Use & Environm Remediat, Beijing, Peoples R China 2.Tech Univ Denmark, Dept Environm Engn, Lyngby, Denmark 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 4.Tech Univ Denmark, Natl Space Inst, DTU Space, Lyngby, Denmark
推荐引用方式 GB/T 7714	Zhang, Xingxing,Jiang, Liguang,Kittel, Cecile M. M.,et al. On the Performance of Sentinel-3 Altimetry Over New Reservoirs: Approaches to Determine Onboard A Priori Elevation[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(17):11.
APA	Zhang, Xingxing.,Jiang, Liguang.,Kittel, Cecile M. M..,Yao, Zhijun.,Nielsen, Karina.,...&Bauer-Gottwein, Peter.(2020).On the Performance of Sentinel-3 Altimetry Over New Reservoirs: Approaches to Determine Onboard A Priori Elevation.GEOPHYSICAL RESEARCH LETTERS,47(17),11.
MLA	Zhang, Xingxing,et al."On the Performance of Sentinel-3 Altimetry Over New Reservoirs: Approaches to Determine Onboard A Priori Elevation".GEOPHYSICAL RESEARCH LETTERS 47.17(2020):11.