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Latitudinal variation of the topside electron temperature at different levels of solar activity
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SYSNO ASEP 0338199 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Latitudinal variation of the topside electron temperature at different levels of solar activity Title Šířková změna elektronové teploty v topside ionosféře při různých úrovních sluneční aktivity Author(s) Truhlík, Vladimír (UFA-U) RID, ORCID
Bilitza, D. (US)
Třísková, Ludmila (UFA-U) RIDSource Title Advances in Space Research. - : Elsevier - ISSN 0273-1177
Roč. 44, č. 6 (2009), s. 693-700Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords Electron temperature ; Solar activity variation ; Latitudinal dependence Subject RIV DG - Athmosphere Sciences, Meteorology R&D Projects IAA300420603 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000269594900007 DOI 10.1016/j.asr.2009.04.029 Annotation A database of electron temperature (Te) measurements comprising most of the available satellite measurements in the topside ionosphere is used for studying the solar activity variations of the electron temperature Te at different latitudes, altitudes, local times and seasons. The Te data are grouped into three levels of solar activity at four altitude ranges, for day and night, and for equinox and solstices. In general Te changes with solar activity are small and comparable in magnitude with seasonal changes but much smaller than the changes with altitude, latitude, and from day to night. In all cases, except at low altitude during daytime, Te increases with increasing solar activity. But this increase is not linear as assumed in most empirical Te models but requires at least a parabolic approximation. At 550 km during daytime negative as well as positive correlation is found. Our data base allows to quantify the latitude range and seasonal conditions for which these correlations occur. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2010
Number of the records: 1