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Accession Number
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N20120012494
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Title
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Analyzing the IAR with IRI During the Recent Solar Minimum.
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Publication Date
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2012
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Media Count
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17p
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Personal Author
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F. Simoes J. Klenzing S. Ivanov
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Abstract
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The 2008-2009 solar minimum was deeper than any within the past century. As such, the performance of the empirical International Reference Ionosphere (IRI) model was impacted. This impact manifested as a disagreement between predicted and measured characteristic separation in frequency for a wave resonating within an Ionospheric Alfven Resonator (IAR). The predicted value of the characteristic was a factor of three lower than what was measured by the Communication/Navigation Outage Forecast System (C/NOFS). Analyzing the model performance and comparing output with measured ionospheric values showed that more than half of the inaccuracy could be explained by inaccuracies in the output of the model. The 2008-2009 solar minimum was outside of the bounds of the effectiveness of the empirical IRI model. Incorporating recent data measurements and new indices would increase the accuracy of IRI during this period.
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Keywords
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Earth ionosphere
Electron density profiles
Lyman alpha radiation
Magnetohydrodynamic waves
Mathematical models
Resonators
Solar activity effects
Sunspots
Velocity distribution
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Source Agency
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National Aeronautics and Space Administration
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NTIS Subject Category
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54C - Astrophysics
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Corporate Author
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Goddard Space Flight Center, Greenbelt, MD.
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Document Type
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Journal article
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Title Note
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N/A
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NTIS Issue Number
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1303
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Contract Number
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NAS5-01068
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