Determination of tropical cyclone location and intensity using HY-2B scatterometer data

Liu Siqi; Lin Wenming; Wang Zhixiong; Lang Shuyan

doi:10.12284/hyxb2021176

Volume 43 Issue 11

Dec. 2021

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Liu Siqi，Lin Wenming，Wang Zhixiong, et al. Determination of tropical cyclone location and intensity using HY-2B scatterometer data[J]. Haiyang Xuebao，2021, 43(11)：146–156 doi: 10.12284/hyxb2021176

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Determination of tropical cyclone location and intensity using HY-2B scatterometer data

doi: 10.12284/hyxb2021176

Liu Siqi^1
,,
Lin Wenming^{1
,
,},
Wang Zhixiong¹,
Lang Shuyan^{2, 3}

1.
School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
2.
National Satellite Ocean Application Service, Beijing 100081, China
3.
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

Received Date: 2021-02-15
Rev Recd Date: 2021-04-19

Available Online: 2021-08-23

Publish Date: 2021-12-31

Abstract

Abstract

Tropical cyclone disaster is one of the most serious natural disasters, and its impact mainly depends on the center location and the intensity. Monitoring the location and the intensity of tropical cyclones is of great significance for improving the accuracy of tropical cyclone forecast and for reducing the impact of tropical cyclone disasters. In this paper, the characteristics of the HY-2B scatterometer wind field, as well as its divergence and curl, are analyzed. It is found that the divergence or curl of the wind field near the cyclone center shows remarkable signatures, such that a new method is proposed to identify the cyclone center, and then the results are compared with the conventional method. Moreover, a method for estimating the size of the tropical cyclone is introduced to evaluate the cyclone intensity. Finally, the remote sensing data of Typhoon Francisco and Typhoon Bualoi are used to verify the proposed methods. The results show that the difference between the cyclone center position determined by the scatterometer and the one of the optimal path is generally less than 20 km. Meanwhile, the determined wind radii correspond well with the development of the tropical cyclone.
- scatterometer,
- tropical cyclone,
- center locating,
- wind radii,
- HY-2B satellite

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References(18)

References

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