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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; Wei, EB (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
Department微波遥感部
Source PublicationREMOTE SENSING
2014
Volume6Issue:11Pages:10913-10930
ISSN2072-4292
Language英语
KeywordSea Foam Layer Microwave Emissivity L-band Sea Surface Salinity And Temperature
AbstractFor 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.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4526
Collection微波遥感部
Corresponding AuthorWei, EB (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
Recommended Citation
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.,...&Wei, EB .(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.
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