Solar flare signatures of the ionospheric GPS total electron content

J. Y. Liu; C. H. Lin; Y. I. Chen; Y. C. Lin; T. W. Fang; C. H. Chen; Y. C. Chen; J. J. Hwang

doi:10.1029/2005JA011306

Solar flare signatures of the ionospheric GPS total electron content

J. Y. Liu, C. H. Lin, Y. I. Chen, Y. C. Lin, T. W. Fang, C. H. Chen, Y. C. Chen, J. J. Hwang

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Abstract

In this study, ionospheric solar flare effects on the total electron content (TEC) and associated time rate of change (rTEC) derived from ground-based global positioning system (GPS) receivers in the midday region are examined. The occurrence times and locations of 11 solar flares are isolated from the 1-8 Å X-ray radiations of the geosynchronous operational environmental satellite (GOES) and the SOHO Extreme Ultraviolet Imaging Telescope (EIT) images, respectively, while the TEC and rTEC are obtained from the international GPS services (IGS). Results show that the maximum value of the TEC increase solely depends on the flare class, while the maximum value of the rTEC increase is related to not only the flare class but also the time rate of change in flare radiations. A statistical analysis further demonstrates that the two maximum values are inversely proportional to the cosine of the great circle angle between the center and flare locations on the solar disc.

Original language	English
Article number	A05308
Journal	Journal of Geophysical Research: Space Physics
Volume	111
Issue number	5
DOIs	https://doi.org/10.1029/2005JA011306
State	Published - 1 May 2006

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title = "Solar flare signatures of the ionospheric GPS total electron content",

abstract = "In this study, ionospheric solar flare effects on the total electron content (TEC) and associated time rate of change (rTEC) derived from ground-based global positioning system (GPS) receivers in the midday region are examined. The occurrence times and locations of 11 solar flares are isolated from the 1-8 {\AA} X-ray radiations of the geosynchronous operational environmental satellite (GOES) and the SOHO Extreme Ultraviolet Imaging Telescope (EIT) images, respectively, while the TEC and rTEC are obtained from the international GPS services (IGS). Results show that the maximum value of the TEC increase solely depends on the flare class, while the maximum value of the rTEC increase is related to not only the flare class but also the time rate of change in flare radiations. A statistical analysis further demonstrates that the two maximum values are inversely proportional to the cosine of the great circle angle between the center and flare locations on the solar disc.",

author = "Liu, {J. Y.} and Lin, {C. H.} and Chen, {Y. I.} and Lin, {Y. C.} and Fang, {T. W.} and Chen, {C. H.} and Chen, {Y. C.} and Hwang, {J. J.}",

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T1 - Solar flare signatures of the ionospheric GPS total electron content

AU - Liu, J. Y.

AU - Lin, C. H.

AU - Chen, Y. I.

AU - Lin, Y. C.

AU - Fang, T. W.

AU - Chen, C. H.

AU - Chen, Y. C.

AU - Hwang, J. J.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - In this study, ionospheric solar flare effects on the total electron content (TEC) and associated time rate of change (rTEC) derived from ground-based global positioning system (GPS) receivers in the midday region are examined. The occurrence times and locations of 11 solar flares are isolated from the 1-8 Å X-ray radiations of the geosynchronous operational environmental satellite (GOES) and the SOHO Extreme Ultraviolet Imaging Telescope (EIT) images, respectively, while the TEC and rTEC are obtained from the international GPS services (IGS). Results show that the maximum value of the TEC increase solely depends on the flare class, while the maximum value of the rTEC increase is related to not only the flare class but also the time rate of change in flare radiations. A statistical analysis further demonstrates that the two maximum values are inversely proportional to the cosine of the great circle angle between the center and flare locations on the solar disc.

AB - In this study, ionospheric solar flare effects on the total electron content (TEC) and associated time rate of change (rTEC) derived from ground-based global positioning system (GPS) receivers in the midday region are examined. The occurrence times and locations of 11 solar flares are isolated from the 1-8 Å X-ray radiations of the geosynchronous operational environmental satellite (GOES) and the SOHO Extreme Ultraviolet Imaging Telescope (EIT) images, respectively, while the TEC and rTEC are obtained from the international GPS services (IGS). Results show that the maximum value of the TEC increase solely depends on the flare class, while the maximum value of the rTEC increase is related to not only the flare class but also the time rate of change in flare radiations. A statistical analysis further demonstrates that the two maximum values are inversely proportional to the cosine of the great circle angle between the center and flare locations on the solar disc.

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JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

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Solar flare signatures of the ionospheric GPS total electron content

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