Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes

doi:10.1109/TGRS.2013.2245673

	Effects of Atmospheric Stability and Wind Fetch on Microwave Sea Echoes
	Wang, Yunhua 1; Zhang, Yanmin 2; Chen, Haihua 1; Guo, Lixin 3
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/handle/2SI8HI0U/3869]
专题	自然资源部第一海洋研究所
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.