IOCAS-IR
The Performance of Dual-Frequency Polarimetric Scatterometer in Sea Surface Wind Retrieval
Liu Shubo1,2; Wei Enbo3,4,5; Jin Xu1; Lv Ailing1,2; Dang Hongxing1
2019-10-01
Source PublicationJOURNAL OF OCEAN UNIVERSITY OF CHINA
ISSN1672-5182
Volume18Issue:5Pages:1051-1060
Corresponding AuthorLiu Shubo(liushubo163@163.com) ; Wei Enbo(ebwei@qdio.ac.cn)
AbstractThe wind retrieval performance of HY-2A scanning scatterometer operating at Ku-band in HH and VV polarizations has been well evaluated in the wind speed range of 0-25 ms(-1). In order to obtain more accurate ocean wind field, a potential extension of dual-frequency (C-band and Ku-band) polarimetric measurements is investigated for both low and very high wind speeds, from 5 to 45ms(-1). Based on the geophysical model functions of C-band and Ku-band, the simulation results show that the polarimetric measurements of Ku-band can improve the wind vector retrieval over the entire scatterometer swath, especially in nadir area, with the wind direction root-mean-square error (RMSE) less than 12 degrees in the wind speed range of 5-25 m s(-1). Furthermore, the results also show that C-band cross-polarization plays a very important role in improving the wind speed retrieval, with the wind speed retrieval accuracy better than 2 ms(-1) for all wind conditions (0-45 ms(-1)). For extreme winds, the C-band HH backscatter coefficients modeled by CMOD5.N(H) and the ocean co-polarization ratio model at large incidence are used to retrieve sea surface wind vector. This result reveals that there is a big decrease of wind direction retrieval RMSE for extreme wind fields, and the retrieved result of C-band HH polarization is nearly the same as that of C-band VV polarization for low-to-high wind speed (5-25 ms(-1)). Thus, to improve the wind retrieval for all wind conditions, the dual-frequency polarimetric scatterometer with C-band and Ku-band horizontal polarization in inner beam, and C-band horizontal and Ku-band vertical polarization in outer beam, can be used to measure ocean winds. This study will contribute to the wind retrieval with merged satellites data and the future spaceborne scatterometer.
Keyworddual-frequency polarimetric scatterometer wind vector retrieval
DOI10.1007/s11802-019-4018-z
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2016YFC1401006] ; National Natural Science Foundation of China[51279186] ; National Natural Science Foundation of China[51479183] ; National Natural Science Foundation of China[41676169] ; National Program on Key Basic Research Project[2011CB013704] ; 111 Project[B14028] ; Marine and Fishery Information Center Project of Jiangsu Province[SJC2014110338]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000482849800006
PublisherOCEAN UNIV CHINA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/162856
Collection中国科学院海洋研究所
Corresponding AuthorLiu Shubo; Wei Enbo
Affiliation1.China Acad Space Technol, Xian Inst Space Radio Technol, Xian 710100, Shaanxi, Peoples R China
2.Natl Key Lab Sci & Technol Space Microwave, Xian 710100, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
5.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Shandong, Peoples R China
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu Shubo,Wei Enbo,Jin Xu,et al. The Performance of Dual-Frequency Polarimetric Scatterometer in Sea Surface Wind Retrieval[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2019,18(5):1051-1060.
APA Liu Shubo,Wei Enbo,Jin Xu,Lv Ailing,&Dang Hongxing.(2019).The Performance of Dual-Frequency Polarimetric Scatterometer in Sea Surface Wind Retrieval.JOURNAL OF OCEAN UNIVERSITY OF CHINA,18(5),1051-1060.
MLA Liu Shubo,et al."The Performance of Dual-Frequency Polarimetric Scatterometer in Sea Surface Wind Retrieval".JOURNAL OF OCEAN UNIVERSITY OF CHINA 18.5(2019):1051-1060.
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