Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC: Three-dimensional electron density structures

Chien-Hung Lin, W. Wang, M. E. Hagan, C. C. Hsiao, T. J. Immel, M. L. Hsu, J. Y. Liu, L. J. Paxton, T. W. Fang, C. H. Liu

Research output: Contribution to journalArticle

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Abstract

The plausible effect of atmospheric tides on the longitudinal structure of the equatorial ionosphere is observed by the FORMOSAT-3/COSMIC (F3/C) constellation during September Equinox, 2006, near solar minimum. The longitudinal structure was first reported in IMAGE satellite airglow observations at the far-ultraviolet (FUV) 135.6-nm wavelength during March Equinox, 2002, near solar maximum. The global three-dimensional ionospheric electron density observed by F3/C shows a prominent four-peaked wave-like longitudinal enhancement in the equatorial ionization anomaly (EIA). The vertical electron density structures observed by F3/C reveal that the feature exists mainly above 250 km altitude indicating that the feature is an F-region phenomenon. The four longitudinal F-region enhancements of the EIA peaks may result from a stronger equatorial plasma fountain at each longitude region produced by a stronger F-region eastward electric field transmitted along the magnetic field lines from E-region where longitudinal variations in atmospheric tides affect the ionospheric dynamo process.

Original languageEnglish
Article numberL11112
JournalGeophysical Research Letters
Volume34
Issue number11
DOIs
Publication statusPublished - 2007 Jun 16

Fingerprint

atmospheric tides
atmospheric tide
COSMIC
F region
electron density
ionospheres
ionosphere
ionization
IMAGE satellite
ionospheric electron density
anomalies
anomaly
airglow
E region
augmentation
constellations
longitudinal waves
longitude
ionospherics
electric field

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Lin, Chien-Hung ; Wang, W. ; Hagan, M. E. ; Hsiao, C. C. ; Immel, T. J. ; Hsu, M. L. ; Liu, J. Y. ; Paxton, L. J. ; Fang, T. W. ; Liu, C. H. / Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC : Three-dimensional electron density structures. In: Geophysical Research Letters. 2007 ; Vol. 34, No. 11.
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abstract = "The plausible effect of atmospheric tides on the longitudinal structure of the equatorial ionosphere is observed by the FORMOSAT-3/COSMIC (F3/C) constellation during September Equinox, 2006, near solar minimum. The longitudinal structure was first reported in IMAGE satellite airglow observations at the far-ultraviolet (FUV) 135.6-nm wavelength during March Equinox, 2002, near solar maximum. The global three-dimensional ionospheric electron density observed by F3/C shows a prominent four-peaked wave-like longitudinal enhancement in the equatorial ionization anomaly (EIA). The vertical electron density structures observed by F3/C reveal that the feature exists mainly above 250 km altitude indicating that the feature is an F-region phenomenon. The four longitudinal F-region enhancements of the EIA peaks may result from a stronger equatorial plasma fountain at each longitude region produced by a stronger F-region eastward electric field transmitted along the magnetic field lines from E-region where longitudinal variations in atmospheric tides affect the ionospheric dynamo process.",
author = "Chien-Hung Lin and W. Wang and Hagan, {M. E.} and Hsiao, {C. C.} and Immel, {T. J.} and Hsu, {M. L.} and Liu, {J. Y.} and Paxton, {L. J.} and Fang, {T. W.} and Liu, {C. H.}",
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Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC : Three-dimensional electron density structures. / Lin, Chien-Hung; Wang, W.; Hagan, M. E.; Hsiao, C. C.; Immel, T. J.; Hsu, M. L.; Liu, J. Y.; Paxton, L. J.; Fang, T. W.; Liu, C. H.

In: Geophysical Research Letters, Vol. 34, No. 11, L11112, 16.06.2007.

Research output: Contribution to journalArticle

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AU - Lin, Chien-Hung

AU - Wang, W.

AU - Hagan, M. E.

AU - Hsiao, C. C.

AU - Immel, T. J.

AU - Hsu, M. L.

AU - Liu, J. Y.

AU - Paxton, L. J.

AU - Fang, T. W.

AU - Liu, C. H.

PY - 2007/6/16

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N2 - The plausible effect of atmospheric tides on the longitudinal structure of the equatorial ionosphere is observed by the FORMOSAT-3/COSMIC (F3/C) constellation during September Equinox, 2006, near solar minimum. The longitudinal structure was first reported in IMAGE satellite airglow observations at the far-ultraviolet (FUV) 135.6-nm wavelength during March Equinox, 2002, near solar maximum. The global three-dimensional ionospheric electron density observed by F3/C shows a prominent four-peaked wave-like longitudinal enhancement in the equatorial ionization anomaly (EIA). The vertical electron density structures observed by F3/C reveal that the feature exists mainly above 250 km altitude indicating that the feature is an F-region phenomenon. The four longitudinal F-region enhancements of the EIA peaks may result from a stronger equatorial plasma fountain at each longitude region produced by a stronger F-region eastward electric field transmitted along the magnetic field lines from E-region where longitudinal variations in atmospheric tides affect the ionospheric dynamo process.

AB - The plausible effect of atmospheric tides on the longitudinal structure of the equatorial ionosphere is observed by the FORMOSAT-3/COSMIC (F3/C) constellation during September Equinox, 2006, near solar minimum. The longitudinal structure was first reported in IMAGE satellite airglow observations at the far-ultraviolet (FUV) 135.6-nm wavelength during March Equinox, 2002, near solar maximum. The global three-dimensional ionospheric electron density observed by F3/C shows a prominent four-peaked wave-like longitudinal enhancement in the equatorial ionization anomaly (EIA). The vertical electron density structures observed by F3/C reveal that the feature exists mainly above 250 km altitude indicating that the feature is an F-region phenomenon. The four longitudinal F-region enhancements of the EIA peaks may result from a stronger equatorial plasma fountain at each longitude region produced by a stronger F-region eastward electric field transmitted along the magnetic field lines from E-region where longitudinal variations in atmospheric tides affect the ionospheric dynamo process.

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