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, Shuiqing1,2,3; Liu, Baochang4; Shen, Hui5; Hou, Yijun1,2,3; Perrie, Will5
2020-07-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume125Issue:7Pages:16
Corresponding AuthorLi, Shuiqing(lishuiqing@qdio.ac.cn) ; Shen, Hui(hui.shen@dfo-mpo.gc.ca)
AbstractWind 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.
KeywordDoppler velocity SAR wind wave swell
DOI10.1029/2020JC016166
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000560011100003
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/168190
Collection海洋环流与波动重点实验室
Corresponding AuthorLi, Shuiqing; Shen, Hui
Affiliation1.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
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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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