GITM-Data Comparisons of the Depletion and Enhancement During the 2017 Solar Eclipse

Chen Wu, A. J. Ridley, Larisa Petrovna Goncharenko, Gang Chen

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

The total solar eclipse of 21 August 2017 was simulated with the Global Ionosphere-Thermosphere Model (GITM), and the results were compared with the total electron content (TEC) measurements provided by the Global Navigation Satellite System, as well as F2 layer peak electron density (NmF2) derived from six ionosondes. TEC decreased over North America by ~54.3% in the model and ~57.6% in measurements, and NmF2 decreased by ~20–50% in the model and ~40–60% in the measurements. GITM predicted a posteclipse enhancement of ~10% in TEC and NmF2, consistent with observations which suggested an increase of ~10–25% in TEC and ~10–40% in NmF2. GITM showed that the divergence of horizontal winds drove the increase in Oxygen after the eclipse allowing an increase in the ionization rate. The slower charge exchange due to both the decreased ion temperature and N2 density allowed an increase of O+ density in the F region also.

元の言語英語
ページ(範囲)3319-3327
ページ数9
ジャーナルGeophysical Research Letters
45
発行部数8
DOI
出版物ステータス出版済み - 4 28 2018

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solar eclipses
solar eclipse
thermosphere
ionospheres
ionosphere
depletion
augmentation
electrons
satellite navigation systems
ionosondes
GNSS
F region
eclipses
ion temperature
charge exchange
electron density
divergence
ionization
comparison
oxygen

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

これを引用

GITM-Data Comparisons of the Depletion and Enhancement During the 2017 Solar Eclipse. / Wu, Chen; Ridley, A. J.; Goncharenko, Larisa Petrovna; Chen, Gang.

:: Geophysical Research Letters, 巻 45, 番号 8, 28.04.2018, p. 3319-3327.

研究成果: ジャーナルへの寄稿記事

Wu, Chen ; Ridley, A. J. ; Goncharenko, Larisa Petrovna ; Chen, Gang. / GITM-Data Comparisons of the Depletion and Enhancement During the 2017 Solar Eclipse. :: Geophysical Research Letters. 2018 ; 巻 45, 番号 8. pp. 3319-3327.
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abstract = "The total solar eclipse of 21 August 2017 was simulated with the Global Ionosphere-Thermosphere Model (GITM), and the results were compared with the total electron content (TEC) measurements provided by the Global Navigation Satellite System, as well as F2 layer peak electron density (NmF2) derived from six ionosondes. TEC decreased over North America by ~54.3{\%} in the model and ~57.6{\%} in measurements, and NmF2 decreased by ~20–50{\%} in the model and ~40–60{\%} in the measurements. GITM predicted a posteclipse enhancement of ~10{\%} in TEC and NmF2, consistent with observations which suggested an increase of ~10–25{\%} in TEC and ~10–40{\%} in NmF2. GITM showed that the divergence of horizontal winds drove the increase in Oxygen after the eclipse allowing an increase in the ionization rate. The slower charge exchange due to both the decreased ion temperature and N2 density allowed an increase of O+ density in the F region also.",
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