Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR

doi:10.1029/2020JC016166

IOCAS-IR > 海洋环流与波动重点实验室

	Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR
	Li, Shuiqing 1,2,3; Liu, Baochang 4; Shen, Hui 5; Hou, Yijun 1,2,3; Perrie, Will 5
	2020-07-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN	2169-9275
卷号	125 期号:7 页码:16
通讯作者	Li, Shuiqing([email protected]) ; Shen, Hui([email protected])
摘要	Wind waves contribute a significant component to the sea surface currents detected by synthetic aperture radar (SAR) systems via the orbital velocity; this component is typically referred to as the wind wave-induced artifact surface velocity (WASV). Accordingly, it is essential to precisely describe the WASV effect, so that the real sea surface currents can be obtained from SAR measurements. In order to enhance our understanding about WASV, we carried out a numerical analysis of the sea state dependence of WASV under various radar configurations. The simulated WASV compares reasonably well with observations reported in the literature. It is found that WASV not only depends on the wind speed but also increases considerably with the development of the wind waves, as characterized by wave age. WASV may increase by two to three times, in fully developed wind wave conditions, as compared to young waves. The wave age dependence appears to largely account for the observed uncertainty in WASV at a given wind speed; moreover, swell is also found to significantly influence WASV through hydrodynamic modulation of wind wave properties. These effects are stronger at higher wind speeds and vary significantly with the different radar configurations that are possible, in terms of polarizations and incidence angles. The variations in WASV using different shortwave spectral functions and angular spreading functions are examined in this manuscript.
关键词	Doppler velocity SAR wind wave swell
DOI	10.1029/2020JC016166
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2018YFC1401002]; National Natural Science Foundation of China[41976010]; National Natural Science Foundation of China[41606201]; National Natural Science Foundation of China[41606024]; National Natural Science Foundation of China[U1706216]; Canadian Space Agency; Dalhousie University Ocean Frontier Institute; Public Science, and Technology Research Funds Projects of Ocean[201505007]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000560011100003
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/168190
专题	海洋环流与波动重点实验室
通讯作者	Li, Shuiqing; Shen, Hui
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing, Peoples R China 5.Fisheries & Oceans Canada, Bedford Inst Oceanog, Ocean & Ecosyst Sci Div, Dartmouth, NS, Canada
推荐引用方式 GB/T 7714	Li, Shuiqing,Liu, Baochang,Shen, Hui,et al. Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(7):16.
APA	Li, Shuiqing,Liu, Baochang,Shen, Hui,Hou, Yijun,&Perrie, Will.(2020).Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(7),16.
MLA	Li, Shuiqing,et al."Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.7(2020):16.

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