中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 海洋研究所
  3. 中国科学院海洋研究所
The Performance of Dual-Frequency Polarimetric Scatterometer in Sea Surface Wind Retrieval

文献类型：期刊论文

作者Liu Shubo4,5; Wei Enbo1,2,3; Jin Xu5; Lv Ailing4,5; Dang Hongxing5
刊名JOURNAL OF OCEAN UNIVERSITY OF CHINA
出版日期2019-10-01
卷号18期号:5页码:1051-1060
关键词dual-frequency polarimetric scatterometer wind vector retrieval
ISSN号1672-5182
DOI10.1007/s11802-019-4018-z
通讯作者Liu Shubo(liushubo163@163.com) ; Wei Enbo(ebwei@qdio.ac.cn)
英文摘要The 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.
资助项目National 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研究方向Oceanography
语种英语
WOS记录号WOS:000482849800006
出版者OCEAN UNIV CHINA
源URL[http://ir.qdio.ac.cn/handle/337002/162855]  
专题中国科学院海洋研究所
通讯作者Liu Shubo; Wei Enbo
作者单位1.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Shandong, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China
4.Natl Key Lab Sci & Technol Space Microwave, Xian 710100, Shaanxi, Peoples R China
5.China Acad Space Technol, Xian Inst Space Radio Technol, Xian 710100, Shaanxi, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：海洋研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。