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
卷号	52 期号:2 页码:929-935
关键词	Stability
ISSN号	01962892
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 Δ Ta-Ts 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 Δ T is also discussed. Compared with FV, the variations of the angle spread function with Δ T can be neglected because of its minor contribution. © 2013 IEEE.
语种	英语
出版者	Institute of Electrical and Electronics Engineers Inc.
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/6688]
专题	自然资源部第一海洋研究所
作者单位	1.Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266003, China; 2.Department of Physics, Ocean University of China, First Institute of Oceanography, Qingdao 266061, China; 3.School of Science, Xidian University, Xi'an 710071, 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.