Effects of Temperature on Sea Surface Radar Backscattering Under Neutral and Nonneutral Atmospheric Conditions for Wind Retrieval Applications: A Numerical Study

doi:10.1109/TGRS.2020.3013980

CORC > 海洋研究所 > 中国科学院海洋研究所

	Effects of Temperature on Sea Surface Radar Backscattering Under Neutral and Nonneutral Atmospheric Conditions for Wind Retrieval Applications: A Numerical Study
	Du, Yanlei 2,3; Yang, Xiaofeng 2,4; Yang, Jian 3; Tan, Shurun 1,6,7; Ma, Wentao 2,4; Li, Ziwei 2,4; Li, Xiaofeng 5
刊名	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
	2021-04-01
卷号	59 期号:4 页码:2727-2743
关键词	Ocean temperature Atmospheric modeling Sea surface Scattering Spaceborne radar Wind speed Atmospheric stability ocean radar backscattering sea surface temperature (SST)
ISSN号	0196-2892
DOI	10.1109/TGRS.2020.3013980
通讯作者	Yang, Xiaofeng(yangxf@radi.ac.cn)
英文摘要	The effects of sea surface temperature (SST) on ocean radar backscattering are investigated under both the neutral and nonneutral atmospheric conditions for the applications of wind retrieval. The impact factors are parameterized as functions of SST. The SST effects on the variations in ocean scattering and wind retrieval are evaluated using an analytic model which combines the KHCC03 spectrum and the second-order small slope approximation (SSA-II) model. Under the neutral condition, we present the following new insights at three commonly used bands: 1) the seawater permittivity accounts for a dominant effect of SST at the L-band. The SST effects induce a wind underestimation of 0.3 m/s over cold seawater and a wind overestimation of 0.24 m/s over warm seawater at the L-band and a wind speed of 8 m/s. The seawater viscosity plays a significant role in the SST effects on ocean scattering at the C- and Ku-bands, while its variation induced by SST has insignificant effects on L-band scattering; 2) for the C-band, the SST-induced wind retrieval error can be neglected at a medium wind speed due to the neutralization of the effects of various factors on surface roughness. Yet, the SST effects are not negligible at low and high wind speeds; and 3) both the dielectric and dynamic factors play significant roles in the SST effects on ocean scattering at the Ku-band. Under the nonneutral condition, the simulation results show that the airsea interaction governs the SST effects on ocean scattering and wind velocity variations. Other than the air-sea interaction, the wind retrieval errors induced by other SST-related factors are negligible at the L- and C-bands.
资助项目	Open Fund of State Key Laboratory of Remote Sensing Science[OFSLRSS202009] ; National Natural Science Foundation of China[41871268]
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:000633493700003
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170844]
专题	中国科学院海洋研究所
通讯作者	Yang, Xiaofeng
作者单位	1.Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA 2.Chinese Acad Sci, Aerosp Informat Res Inst, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China 3.Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China 4.Key Lab Earth Observat Hainan Prov, Sanya 572029, Peoples R China 5.Chinese Acad Sci, Inst Oceanog, Qingdao 266071, Peoples R China 6.Zhejiang Univ, Zhejiang Univ Univ Illinois Urbana Champaign Inst, Hangzhou 314400, Zhejiang, Peoples R China 7.Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Du, Yanlei,Yang, Xiaofeng,Yang, Jian,et al. Effects of Temperature on Sea Surface Radar Backscattering Under Neutral and Nonneutral Atmospheric Conditions for Wind Retrieval Applications: A Numerical Study[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2021,59(4):2727-2743.
APA	Du, Yanlei.,Yang, Xiaofeng.,Yang, Jian.,Tan, Shurun.,Ma, Wentao.,...&Li, Xiaofeng.(2021).Effects of Temperature on Sea Surface Radar Backscattering Under Neutral and Nonneutral Atmospheric Conditions for Wind Retrieval Applications: A Numerical Study.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,59(4),2727-2743.
MLA	Du, Yanlei,et al."Effects of Temperature on Sea Surface Radar Backscattering Under Neutral and Nonneutral Atmospheric Conditions for Wind Retrieval Applications: A Numerical Study".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 59.4(2021):2727-2743.