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Influence of the type of sea waves on the backscattered radar cross section at medium incidence angles
Author: Karaev, V. Yu.1; Panfilova, M. A.1; Jie, Guo2
ISSN: 0001-4338
Issued Date: 2016-12-01
Volume: 52, Issue:9, Pages:904-910
Keyword: sea waves ; scatterometer ; backscattered radar cross section ; wind speed ; wave age ; classification of sea waves ; wind speed retrieval algorithms
DOI: 10.1134/S0001433816090139
English Abstract: We consider the influence of the sea surface state on the backscattered radar cross section and the accuracy of the wind speed retrieval from the scatterometer data. We used a joint set of radars and buoys to determine the type of sea waves. Three types of sea waves were distinguished: developing wind waves, fully developed wind waves, and mixed sea. It is shown that the retrieval error of the near surface wind speed using a one-parameter algorithm is minimal in the case of fully developed wind waves. We compared these data with the results of radio-altimeter data analysis and showed that in both cases underestimation of the retrieval wind speed exists for developing wind waves and overestimation occurs for mixed sea. A variety of swell parameters (length of the dominating wave, swell height, swell age) significantly influence the backscattered radar cross section, leading to a growth in the mean square error of the retrieved wind speed during vertical sounding (radio-altimeter data), and only slightly influence the mean square error of the scatterometer data (medium incidence angles). It is necessary to include the information about the parameters of sea waves in the algorithms and take into account the regional wave properties to increase the accuracy of wind speed retrieval.
WOS Subject Extended: Meteorology & Atmospheric Sciences ; Oceanography
Funder: Russian Foundation for Basic Research(13-05-00852a ; Radiophysics Program of the Division of Physical Sciences, Russian Academy of Sciences ; Chinese Academy of Sciences ; 15-55-53046 GFEN_a)
DOC Type: Article
Indexed Type: SCI
Language: 英语
WOS ID: WOS:000394270700003
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Content Type: 期刊论文
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description.institution: 1.Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod, Russia
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China

Recommended Citation:
Karaev, V. Yu.,Panfilova, M. A.,Jie, Guo. Influence of the type of sea waves on the backscattered radar cross section at medium incidence angles[J]. IZVESTIYA ATMOSPHERIC AND OCEANIC PHYSICS,2016,52(9):904-910.
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