Use of a continuous function to approximate seasonally-cyclic ion composition variations described by the International Reference Ionosphere (IRI)

L. A. Shchepkin; G. P. Kushnarenko; G. M. Kuznetsova

doi:10.1117/12.497352

28 March 2003 Use of a continuous function to approximate seasonally-cyclic ion composition variations described by the International Reference Ionosphere (IRI)

L. A. Shchepkin, G. P. Kushnarenko, G. M. Kuznetsova

Author Affiliations +

Proceedings Volume 5027, Ninth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics; (2003) https://doi.org/10.1117/12.497352
Event: Ninth Joint International symposium on Atmospheric and Ocean Optics, 2002, Tomsk, Russian Federation

Abstract

The IRI model provides a step-like dependence of the relative ion composition over an annual cycle which is determined by three seasons. Variations over a cycle of solar activity are given only for two steps of low and high activity. We suggest an approximation of seasonally-cyclic variations in relative content of molecular ions to give a smooth continuous dependence on the day of the year and on the index of solar activity F_10.7.

Citation Download Citation

L. A. Shchepkin, G. P. Kushnarenko, and G. M. Kuznetsova "Use of a continuous function to approximate seasonally-cyclic ion composition variations described by the International Reference Ionosphere (IRI)", Proc. SPIE 5027, Ninth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics, (28 March 2003); https://doi.org/10.1117/12.497352

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