Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes | |
Wang, Yunhua1; Zhang, Yanmin2; Chen, Haihua1; Guo, Lixin3 | |
刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING |
2014-02 | |
卷号 | 52期号:2页码:929-935 |
关键词 | Atmospheric stability microwave scattering sea state |
ISSN号 | 0196-2892 |
DOI | 10.1109/TGRS.2013.2245673 |
英文摘要 | The influences of atmospheric stability and wind fetch on microwave scattering from sea surfaces are presented. The equivalent neutral wind speed (ENWS) and the friction velocity (FV) above sea surface are evaluated by the similarity theory of Monin and Obukhov in combination with the Charnock relation. The numerical simulations show that atmospheric stability and wind fetch would make effects on ENWS and, therefore, further on the scattering coefficients (NRCS). And the NRCS decreases with increasing air-sea temperature difference (Delta T = T-a - T-s) because the ENWS is lower than actual wind speed in stable atmospheric condition, and vice versa. Moreover, the ENWS/FV and the NRCS decrease with increasing wind fetch under unstable atmospheric condition. However, in stable atmospheres, the ENWS/FV and the NRCS are almost insensitive to wind fetch. In this paper, the response of NRCS to Delta T is also discussed. Compared with FV, the variations of the angle spread function with Delta T can be neglected because of its minor contribution. |
资助项目 | National Science Foundation for Distinguished Young Scholars of China[61225002] |
WOS关键词 | ELECTROMAGNETIC SCATTERING ; 2-SCALE MODEL ; OCEAN SURFACE ; BACKSCATTERING ; DEPENDENCE ; SLOPE ; COEFFICIENTS ; SPECTRUM ; STRESS |
WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
语种 | 英语 |
出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
WOS记录号 | WOS:000328941300012 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn:8080/handle/2SI8HI0U/25834] |
专题 | 自然资源部第一海洋研究所 |
通讯作者 | Wang, Yunhua |
作者单位 | 1.Ocean Univ China, Ocean Remote Sensing Inst, Qingdao 266003, Peoples R China 2.Ocean Univ China, Dept Phys, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Xidian Univ, Sch Sci, Xian 710071, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yunhua,Zhang, Yanmin,Chen, Haihua,et al. Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2014,52(2):929-935. |
APA | Wang, Yunhua,Zhang, Yanmin,Chen, Haihua,&Guo, Lixin.(2014).Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,52(2),929-935. |
MLA | Wang, Yunhua,et al."Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 52.2(2014):929-935. |
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