Towards better description of solar activity variation in the International Reference Ionosphere topside ion composition model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F15%3A00431937" target="_blank" >RIV/68378289:_____/15:00431937 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.asr.2014.07.033" target="_blank" >http://dx.doi.org/10.1016/j.asr.2014.07.033</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.asr.2014.07.033" target="_blank" >10.1016/j.asr.2014.07.033</a>

Result language
angličtina
Original language name
Towards better description of solar activity variation in the International Reference Ionosphere topside ion composition model
Original language description
We present a revision of the ion composition model that is included in the International Reference Ionosphere (IRI) as the TTS-03 option. We employed a better description of the solar activity variation based on the assumption that the dependence of thelogarithm of absolute densities of the individual ion species (H+, O+, He+ and N+) on the F10.7 index is linear. Unlike the TTS-03 model using the relative ion densities, the revised model employs absolute ion densities measured by the Atmosphere Explorer C&E and Intercosmos-24 satellites. Results of the revised ion composition model are presented, with special emphasis on the upper transition height (HT) during low solar activity. Equatorial HT produced by the model for a very low solar activity is 800km at daytime (14 h LT) and 520 km at nighttime (2 h LT). These values are closer to HT observed by the Coupled Ion-Neutral Dynamics Investigations (CINDI) on the Communications/Navigation Outage Forecasting System (C/NOFS) satellite in
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Project
<a href="/en/project/LH11123" target="_blank" >LH11123: Modeling and analysis of thermal plasma parameters using measurements of the Earth''s artificial satellites</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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