Acta Geodaetica et Cartographica Sinica ›› 2026, Vol. 55 ›› Issue (8): 1357-1368.doi: 10.11947/j.AGCS.2026.20260055

• Geodesy and Navigation • Previous Articles    

A method for estimating surface wind speed during typhoon events using GNSS-derived PWV and its accuracy validation

Qimin He1,2,3,4(), Kangming Song5,6, Kefei Zhang7(), Chao Hu2, Biqing Gao8   

  1. 1.Jiangsu Provincial Engineering Center for Industrial Technology of Urban Intelligent Remote Sensing and Ancient City Digital Intelligence, Suzhou University of Science and Technology, Suzhou 215009, China
    2.Engineering Research Center of Mining Area Environmental and Disaster Cooperative Monitoring, Anhui University of Science and Technology, Huainan 232001, China
    3.Suzhou Bohe Intelligent Information Technology Co., Ltd., Suzhou 215101, China
    4.Suzhou Key Laboratory of Spatial Information Intelligent Technology and Application, Suzhou University of Science and Technology, Suzhou 215009, China
    5.Guangzhou Urban Planning & Design Survey Research Institute Co., Ltd., Guangzhou 510060, China
    6.Guangzhou Development Zone Planning & Design Survey Research Institute Co., Ltd., Guangzhou 510700, China
    7.School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China
    8.SIPSG Information Technology Co., Ltd., Suzhou 215021, China
  • Received:2026-03-03 Revised:2026-07-24 Published:2026-09-09
  • Contact: Kefei Zhang E-mail:heqimin@usts.edu.cn;profkzhang@cumt.edu.cn
  • About author:He Qimin (1994—), male, PhD, lecturer, majors in GNSS meteorology. E-mail: heqimin@usts.edu.cn
  • Supported by:
    The National Natural Science Foundation of China(42361134583; 42274021; 42404015);Engineering Research Center of Mining Area Environmental and Disaster Cooperative Monitoring (Anhui University of Science and Technology)(KSXTJC202404);Basic Research Program of Jiangsu Higher Education Institutions of China(24KJB170020);Jiangsu Province Science and Technology Vice President Project(FZ20240127);Dongwu Leading Talent Program for Science and Technology Innovation and Entrepreneurship(WC2025027)

Abstract:

Surface wind speed (WS) is a key indicator for evaluating typhoon intensity and assessing potential wind hazards. However, the sparse distribution of automatic weather stations limits high-resolution monitoring of surface wind fields during typhoon events. In this study, three PWV-based WS estimation models (LPWV-WS, PPWV-WS, and PWV-WS3) were developed based on the correlation between precipitable water vapor (PWV) and WS during typhoon periods, together with the temporal persistence of wind speed. The models were evaluated using PWV observations from 97 global navigation satellite system (GNSS) stations, WS observations from 24 automatic weather stations, and ERA5 wind field data collected over Kyushu, Japan, during typhoon events from 2019 to 2023. The results show that PWV is strongly correlated with WS during typhoon periods, whereas the correlation is weak during non-typhoon periods. A weighted K-fold cross-validation based on typhoon samples demonstrates that the PWV-WS3 model achieves the best accuracy and stability, with mean absolute error (MAE), root mean square error (RMSE), and standard deviation (STD) of 0.89 m/s, 1.25 m/s, and 1.24 m/s, respectively. The corresponding errors for the derived wind level (WL) are 0.44, 0.71, and 0.70, respectively. A case study of super Typhoon Khanun (2023) further demonstrates that GNSS-PWV-enhanced wind fields provide a more detailed representation of high-wind-speed regions and their spatial evolution during typhoon movement. These results indicate that GNSS-derived PWV can effectively complement conventional surface wind observations and provide a new approach for high-resolution surface wind field reconstruction and typhoon wind hazard monitoring.

Key words: global navigation satellite system, precipitable water vapor, typhoon, wind speed and level, cross-validation

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