Quality analysis of sea level height data of HY-2C satellite

Meng Ju; Yu Fangjie; Zhuang Zhiyuan; Qi Juanjuan; Chen Ge

doi:10.12284/hyxb2022168

Volume 44 Issue 10

Oct. 2022

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Meng Ju，Yu Fangjie，Zhuang Zhiyuan, et al. Quality analysis of sea level height data of HY-2C satellite[J]. Haiyang Xuebao，2022, 44(10)：173–181 doi: 10.12284/hyxb2022168

Citation:

Meng Ju，Yu Fangjie，Zhuang Zhiyuan, et al. Quality analysis of sea level height data of HY-2C satellite[J]. Haiyang Xuebao，2022, 44(10)：173–181 doi: 10.12284/hyxb2022168

Citation:

Meng Ju，Yu Fangjie，Zhuang Zhiyuan, et al. Quality analysis of sea level height data of HY-2C satellite[J]. Haiyang Xuebao，2022, 44(10)：173–181 doi: 10.12284/hyxb2022168

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Quality analysis of sea level height data of HY-2C satellite

doi: 10.12284/hyxb2022168

Meng Ju^1
,,
Yu Fangjie^{1, 2
,
,},
Zhuang Zhiyuan¹,
Qi Juanjuan¹,
Chen Ge^{1, 2}

1.
Department of Marine Technology, Faculty of Information Science and Engineering, Ocean University of China, Qingdao 266100, China
2.
Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

Received Date: 2022-05-04
Rev Recd Date: 2022-06-06

Available Online: 2022-06-13

Publish Date: 2022-10-01

Abstract

Abstract

As an important part of monitoring oceanic phenomenon, it is essential to calibrate altimeter sea level height data. In 2020, the Haiyang-2C (HY-2C) satellite was sent to orbit as a follow-up mission of the HY-2B satellite. However, the quality of HY-2C sea level height is not fully known yet. In this paper, the quality and accuracy of HY-2C sensor geophysical data records (SGDR) of the latest version were assessed through the comparison with the HY-2B geophysical data records (GDR) and Jason-3 GDR measured at the same time. According to the results: self-crossover points analysis is carried out by star cross calibration of HY-2C satellite. The quality analysis results of sea level anomaly data of HY-2C SGDR are different. Through the comparison results, the optimal cubic spline interpolation method has the best quality analysis performance, with mean value is 0.03 cm and the standard deviation is 6.17 cm. The mean and standard deviation of sea level anomaly at the dual-crossing calibration of HY-2C and HY-2B satellites are −0.47 cm and 5.32 cm. The mean and standard deviation of sea level anomaly at the intersection of HY-2C and Jason-3 satellites are −0.3 cm and 5.32 cm. These results show that HY-2C has the same precision as HY-2B satellite and Jason-3 satellite. Data quality of HY-2C satellite is enough to meet the requirements of marine scientific research and application.
- HY-2C satellite,
- altimeter,
- sea level height,
- crossover analysis

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References(18)

References

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