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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/angeo-2019-72
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2019-72
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: regular paper 12 Jun 2019

Submitted as: regular paper | 12 Jun 2019

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This discussion paper is a preprint. It is a manuscript under review for the journal Annales Geophysicae (ANGEO).

Combinatorial observation ionospheric characteristics during tropical cyclone Debbie passing eastern Australia in 2017 using GPS and ion sounder

Fuyang Ke1, Jinling Wang2, Kehe Wang3, Jiujing Xu4, Yong Wang5, Xinzhi Wang1, and Jian Deng6 Fuyang Ke et al.
  • 1School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • 2School of Civil and Environmental Engineering, The University of New South Wales, Sydney, 2025, Australia
  • 3Space Weather Services, Bureau of Meteorology, Surry Hills, New South Wales, Australia
  • 4School of Geodesy and Geomatics, Anhui University of Science and Technology, Huainan 232001, China
  • 5Jiangsu Province Surveying and Mapping Engineering Institute, Nanjing 210013, China
  • 6School of Computer and Information Engineering, Xiamen University of Technology, Xiamen 361024, China

Abstract. The ionospheric morphology responses to tropical cyclone passing over eastern Australia, named as DEBBIE in 2017, is investigated using Global Positioning System (GPS) Slant Total Electron Content (STEC), GPS ionospheric scintillation S4 index and ionospheric characteristics by High Frequency (HF) radio. Based on the data analysis in this study, some significant morphological characteristics of ionospheric responses to tropical cyclone Debbie are identified as follows: a) As the GPS satellites PRN01 and PRN11 were passing above typhoon center, their ROTI (Rate of STEC index) is obviously increased. b) The S4 intensity of the GPS ionospheric scintillation is significantly enhanced on March 27, which mostly concentrate around tropical cyclone center and distribute over the region within 18 °S-25 °S. c) The stronger enhancement of f0F1 and f0F2 was observed by High Frequency at Townsville on March 28, when the distance between Townsville and the center of tropical cyclone Debbie was shorter. Regarding the coupling mechanism between the ionospheric disturbance and the tropical cyclone, it is suspected that the electric field perturbations due to turbulent top movement from tropical cyclones might generate ionospheric irregularity and disturbance. To a certain extent, some ionospheric irregularities can further produce bubbles.

Fuyang Ke et al.
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Short summary
The morphological characteristics of ionospheric response to tropical cyclone Debbie passing eastern Australia in 2017 is investigated by GPS and ion sounder. The results agree with the previous viewpoint that tropical cyclone can trigger ionospheric disturbance. Considering the influence from the geomagnetic and solar activity, the turbulent top movement theory is utilized to explain how tropical cyclone causes ionospheric irregularity and further triggers ionospheric scintillations.
The morphological characteristics of ionospheric response to tropical cyclone Debbie passing...
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