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A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide

Publication ,  Journal Article
Qin, Z; Cummer, SA; Chen, M; Lyu, F; Du, YP
Published in: Journal of Geophysical Research: Atmospheres
March 27, 2019

The lightning sferic has been shown to be a valuable radio signal for detecting perturbations of the lower ionosphere caused by the lightning activity itself and by other terrestrial and space events (Shao et al., 2012, https://doi.org/10.1038/ngeo1668). Adding to many existing methods, we have recently proposed an improved ray theory (RT) model for investigating the lightning sferic transmission in the Earth-ionosphere waveguide (Qin et al., 2017, https://doi.org/10.1002/2016JD025599). In the present study, a further modification to the RT model was made to increase its accuracy in modeling the lightning sferic in a broader frequency band and a larger distance range. The modification included two aspects: a new incident angle finding technique and a novel method for deriving the high-order hop series. To quantitatively evaluate the effectiveness of the modification, a comparative study of this modified RT model with its previous version and the full-wave finite difference time domain model was carried out. The results showed that this modified RT model did better than its previous version and was in close agreement with the full-wave finite difference time domain method in modeling the lightning sferic in frequencies bands lower to 3, 5, and 7 kHz for distances up to 500, 800, and 1,000 km, respectively.

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Published In

Journal of Geophysical Research: Atmospheres

DOI

EISSN

2169-8996

ISSN

2169-897X

Publication Date

March 27, 2019

Volume

124

Issue

6

Start / End Page

3335 / 3349

Related Subject Headings

  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences
 

Citation

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MLA
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Qin, Z., Cummer, S. A., Chen, M., Lyu, F., & Du, Y. P. (2019). A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide. Journal of Geophysical Research: Atmospheres, 124(6), 3335–3349. https://doi.org/10.1029/2018JD029440
Qin, Z., S. A. Cummer, M. Chen, F. Lyu, and Y. P. Du. “A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide.” Journal of Geophysical Research: Atmospheres 124, no. 6 (March 27, 2019): 3335–49. https://doi.org/10.1029/2018JD029440.
Qin Z, Cummer SA, Chen M, Lyu F, Du YP. A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide. Journal of Geophysical Research: Atmospheres. 2019 Mar 27;124(6):3335–49.
Qin, Z., et al. “A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide.” Journal of Geophysical Research: Atmospheres, vol. 124, no. 6, Mar. 2019, pp. 3335–49. Scopus, doi:10.1029/2018JD029440.
Qin Z, Cummer SA, Chen M, Lyu F, Du YP. A Comparative Study of the Ray Theory Model With the Finite Difference Time Domain Model for Lightning Sferic Transmission in Earth-Ionosphere Waveguide. Journal of Geophysical Research: Atmospheres. 2019 Mar 27;124(6):3335–3349.

Published In

Journal of Geophysical Research: Atmospheres

DOI

EISSN

2169-8996

ISSN

2169-897X

Publication Date

March 27, 2019

Volume

124

Issue

6

Start / End Page

3335 / 3349

Related Subject Headings

  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0406 Physical Geography and Environmental Geoscience
  • 0401 Atmospheric Sciences