Solar cycle hysteresis on F-region electron concentration peak heights over Tucuman

Details Solar cycle hysteresis on F-region electron concentration peak heights over Tucuman Solar cycle hysteresis on F-region electron concentration peak heights over Tucuman

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..15...83d&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 15, no. 2, p. 83-88

Mathematics

Logic

Annual Variations, F Region, Hysteresis, Ionospheric Electron Density, Reference Atmospheres, Solar Cycles, Solar Terrestrial Interactions, Density Distribution, Meteorological Parameters

Scientific paper

Ionospheric models (or numerical maps) usually depend on a solar activity index (e.g. sunspot number Rz or Covington index F10.7). The relevant relations are, however, not always the same in the ascending and descending parts of a solar cycle. As shown in a previous paper cycle 21, distinct from cycle 20, shows a strong 'hysteresis' of foF2. In the present paper we analyse the behaviour of the parameter M(3000)F2 for the same cycles 20 and 21. Our results may be used in a revision of current prediction models and maps.

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