Modeling ionospheric absorption modified by anomalous heating during substorms

G. M. Milikh; Y. S. Dimant; X. Shao; P. N. Guzdar; A. S. Sharma; K. Papadopoulos; E. M. Burns; C. C. Goodrich; T. J. Rosenberg; A. T. Weatherwax; M. J. Wiltberger; J. G. Lyon; J. A. Fedder

doi:10.1029/2000GL003823

Modeling ionospheric absorption modified by anomalous heating during substorms

G. M. Milikh, Y. S. Dimant, X. Shao, P. N. Guzdar, A. S. Sharma, K. Papadopoulos, E. M. Burns, C. C. Goodrich, T. J. Rosenberg, A. T. Weatherwax, M. J. Wiltberger, J. G. Lyon, J. A. Fedder

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Abstract

Riometers monitor the changes in ionospheric conductivity by measuring the absorption of very high frequency radio noise of galactic origin passing through the ionosphere. In this Letter the absorption of radio signals by a thin layer of ionospheric plasma, produced by ionization due to energetic precipitating electrons, is modeled by taking into account strong turbulent heating caused by instabilities. The precipitating electron population is obtained from a global MHD simulation of the magnetosphere, along with the electric fields which excite the Farley-Buneman instability and lead to turbulent electron heating. A comparison, the first of its kind, of the data from polar and sub-auroral riometers for the magnetic cloud event of January 10, 1997 shows good agreement. The ionospheric conductance modified by turbulent electron heating can be used to improve the magnetosphere-ionosphere coupling in the current global MHD models.

Original language	English
Pages (from-to)	487-490
Number of pages	4
Journal	Geophysical Research Letters
Volume	28
Issue number	3
DOIs	https://doi.org/10.1029/2000GL003823
State	Published - Feb 1 2001

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Milikh, G. M., Dimant, Y. S., Shao, X., Guzdar, P. N., Sharma, A. S., Papadopoulos, K., Burns, E. M., Goodrich, C. C., Rosenberg, T. J., Weatherwax, A. T., Wiltberger, M. J., Lyon, J. G., & Fedder, J. A. (2001). Modeling ionospheric absorption modified by anomalous heating during substorms. Geophysical Research Letters, 28(3), 487-490. https://doi.org/10.1029/2000GL003823

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title = "Modeling ionospheric absorption modified by anomalous heating during substorms",

abstract = "Riometers monitor the changes in ionospheric conductivity by measuring the absorption of very high frequency radio noise of galactic origin passing through the ionosphere. In this Letter the absorption of radio signals by a thin layer of ionospheric plasma, produced by ionization due to energetic precipitating electrons, is modeled by taking into account strong turbulent heating caused by instabilities. The precipitating electron population is obtained from a global MHD simulation of the magnetosphere, along with the electric fields which excite the Farley-Buneman instability and lead to turbulent electron heating. A comparison, the first of its kind, of the data from polar and sub-auroral riometers for the magnetic cloud event of January 10, 1997 shows good agreement. The ionospheric conductance modified by turbulent electron heating can be used to improve the magnetosphere-ionosphere coupling in the current global MHD models.",

author = "Milikh, \{G. M.\} and Dimant, \{Y. S.\} and X. Shao and Guzdar, \{P. N.\} and Sharma, \{A. S.\} and K. Papadopoulos and Burns, \{E. M.\} and Goodrich, \{C. C.\} and Rosenberg, \{T. J.\} and Weatherwax, \{A. T.\} and Wiltberger, \{M. J.\} and Lyon, \{J. G.\} and Fedder, \{J. A.\}",

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T1 - Modeling ionospheric absorption modified by anomalous heating during substorms

AU - Milikh, G. M.

AU - Dimant, Y. S.

AU - Shao, X.

AU - Guzdar, P. N.

AU - Sharma, A. S.

AU - Papadopoulos, K.

AU - Burns, E. M.

AU - Goodrich, C. C.

AU - Rosenberg, T. J.

AU - Weatherwax, A. T.

AU - Wiltberger, M. J.

AU - Lyon, J. G.

AU - Fedder, J. A.

PY - 2001/2/1

Y1 - 2001/2/1

N2 - Riometers monitor the changes in ionospheric conductivity by measuring the absorption of very high frequency radio noise of galactic origin passing through the ionosphere. In this Letter the absorption of radio signals by a thin layer of ionospheric plasma, produced by ionization due to energetic precipitating electrons, is modeled by taking into account strong turbulent heating caused by instabilities. The precipitating electron population is obtained from a global MHD simulation of the magnetosphere, along with the electric fields which excite the Farley-Buneman instability and lead to turbulent electron heating. A comparison, the first of its kind, of the data from polar and sub-auroral riometers for the magnetic cloud event of January 10, 1997 shows good agreement. The ionospheric conductance modified by turbulent electron heating can be used to improve the magnetosphere-ionosphere coupling in the current global MHD models.

AB - Riometers monitor the changes in ionospheric conductivity by measuring the absorption of very high frequency radio noise of galactic origin passing through the ionosphere. In this Letter the absorption of radio signals by a thin layer of ionospheric plasma, produced by ionization due to energetic precipitating electrons, is modeled by taking into account strong turbulent heating caused by instabilities. The precipitating electron population is obtained from a global MHD simulation of the magnetosphere, along with the electric fields which excite the Farley-Buneman instability and lead to turbulent electron heating. A comparison, the first of its kind, of the data from polar and sub-auroral riometers for the magnetic cloud event of January 10, 1997 shows good agreement. The ionospheric conductance modified by turbulent electron heating can be used to improve the magnetosphere-ionosphere coupling in the current global MHD models.

UR - https://www.scopus.com/pages/publications/17744377940

U2 - 10.1029/2000GL003823

DO - 10.1029/2000GL003823

M3 - Article

AN - SCOPUS:17744377940

SN - 0094-8276

VL - 28

SP - 487

EP - 490

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 3

ER -

Modeling ionospheric absorption modified by anomalous heating during substorms

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