Joint retrieval of wind and current using airborne Doppler scatterometer

Zhao Wencheng; Lin Wenming; He Yijun; Bao Qingliu

doi:10.12284/hyxb2023169

Volume 45 Issue 12

Dec. 2023

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Zhao Wencheng，Lin Wenming，He Yijun, et al. Joint retrieval of wind and current using airborne Doppler scatterometer[J]. Haiyang Xuebao，2023, 45(12)：112–120 doi: 10.12284/hyxb2023169

Citation:

Zhao Wencheng，Lin Wenming，He Yijun, et al. Joint retrieval of wind and current using airborne Doppler scatterometer[J]. Haiyang Xuebao，2023, 45(12)：112–120 doi: 10.12284/hyxb2023169

Citation:

Zhao Wencheng，Lin Wenming，He Yijun, et al. Joint retrieval of wind and current using airborne Doppler scatterometer[J]. Haiyang Xuebao，2023, 45(12)：112–120 doi: 10.12284/hyxb2023169

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Joint retrieval of wind and current using airborne Doppler scatterometer

doi: 10.12284/hyxb2023169

Zhao Wencheng^1
,,
Lin Wenming^{2, 3
,
,},
He Yijun^{2, 3},
Bao Qingliu⁴

1.
School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
3.
Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing 100081, China
4.
Piesat Information Technology Co., Ltd., Bejing 100195, China

Received Date: 2023-09-21
Rev Recd Date: 2023-10-29

Available Online: 2023-12-29

Publish Date: 2023-12-01

Abstract

Abstract

Doppler scatterometer is able to measure radar backscattering coefficient and Doppler frequency over sea surface, such that it can be used to retrieve sea surface wind and sea surface current simultaneously. This paper performs a study on the joint wind and current retrieval based on the observation data from an airborne Doppler scatterometer, which results are compared with those of independent retrieval. The results indicate that the accuracy of sea surface current is significantly improved by introducing the radar backscattering coefficients into the joint inversion method, however, the accuracy of the retrieved wind field from the joint inversion method is slightly lower than that of the independent wind inversion, compared to the European Centre for Medium-Range Weather Forecasts winds. This implies that the Doppler information has little influence on the wind retrieval, while the radar backscattering coefficients (the wind) have a remarkable impact on the sea surface current retrieval. The joint inversion algorithm can mitigates the effects of sea surface wind for the current retrieval. The results of this study provide a new insight to the interplay between wind inversion and current retrieval, and also provide a reference for the data processing of spaceborne Doppler scatterometer.
- Doppler scatterometer,
- sea surface wind,
- sea surface current,
- joint inversion

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References(26)

References

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