Emissivity Measurements of Foam-Covered Water Surface at L-Band for Low Water Temperatures

	Emissivity Measurements of Foam-Covered Water Surface at L-Band for Low Water Temperatures
	Wei, En-Bo; Liu, Shu-Bo; Wang, Zhen-Zhan; Tong, Xiao-Lin; Dong, Shuai; Li, Bin; Liu, Jing-Yi
刊名	REMOTE SENSING
	2014
卷号	6 期号:11 页码:10913-10930
关键词	sea foam layer microwave emissivity L-band sea surface salinity and temperature
ISSN号	2072-4292
通讯作者	Wei, EB (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
英文摘要	For a foam-covered sea surface, it is difficult to retrieve sea surface salinity (SSS) with L-band brightness temperature (1.4 GHz) because of the effect of a foam layer with wind speeds stronger than 7 m/s, especially at low sea surface temperature (SST). With foam-controlled experiments, emissivities of a foam-covered water surface at low SST (-1.4 degrees C to 1.7 degrees C) are measured for varying SSS, foam thickness, incidence angle, and polarization. Furthermore, a theoretical model of emissivity is introduced by combining wave approach theory with the effective medium approximation method. Good agreement is obtained upon comparing theoretical emissivities with those of experiments. The results indicate that foam parameters have a strong influence on increasing emissivity of a foam-covered water surface. Increments of experimental emissivities caused by foam thickness of 1 cm increase from about 0.014 to 0.131 for horizontal polarization and 0.022 to 0.150 for vertical polarization with SSS increase and SST decrease. Contributions of the interface between the foam layer and water surface to the foam layer emissivity increments are discussed for frequencies between 1 and 37 GHz.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4526]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Wei, En-Bo,Liu, Shu-Bo,Wang, Zhen-Zhan,et al. Emissivity Measurements of Foam-Covered Water Surface at L-Band for Low Water Temperatures[J]. REMOTE SENSING,2014,6(11):10913-10930.
APA	Wei, En-Bo.,Liu, Shu-Bo.,Wang, Zhen-Zhan.,Tong, Xiao-Lin.,Dong, Shuai.,...&Liu, Jing-Yi.(2014).Emissivity Measurements of Foam-Covered Water Surface at L-Band for Low Water Temperatures.REMOTE SENSING,6(11),10913-10930.
MLA	Wei, En-Bo,et al."Emissivity Measurements of Foam-Covered Water Surface at L-Band for Low Water Temperatures".REMOTE SENSING 6.11(2014):10913-10930.