Wind Wave Effects on Remote Sensing of Sea Surface Currents From SAR | |
Li, Shuiqing1,4,5; Liu, Baochang3; Shen, Hui2; Hou, Yijun1,4,5; Perrie, Will2 | |
刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS |
2020-07-01 | |
卷号 | 125期号:7页码:16 |
关键词 | Doppler velocity SAR wind wave swell |
ISSN号 | 2169-9275 |
DOI | 10.1029/2020JC016166 |
通讯作者 | Li, Shuiqing(lishuiqing@qdio.ac.cn) ; Shen, Hui(hui.shen@dfo-mpo.gc.ca) |
英文摘要 | 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. |
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 |
语种 | 英语 |
出版者 | AMER GEOPHYSICAL UNION |
WOS记录号 | WOS:000560011100003 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/168189] |
专题 | 海洋研究所_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.Fisheries & Oceans Canada, Bedford Inst Oceanog, Ocean & Ecosyst Sci Div, Dartmouth, NS, Canada 3.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China |
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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论