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Variations of daytime and nighttime electron temperature and heat flux in the upper ionosphere, topside ionosphere and lower plasmasphere for low and high solar activity
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SYSNO ASEP 0338197 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Variations of daytime and nighttime electron temperature and heat flux in the upper ionosphere, topside ionosphere and lower plasmasphere for low and high solar activity Title Změny denní a noční elektronové teploty a tepelného toku v horní ionosféře, topside ionosféře a v dolní plazmasféře pro nízkou a vysokou sluneční aktivitu Author(s) Truhlík, Vladimír (UFA-U) RID, ORCID
Třísková, Ludmila (UFA-U) RID
Bilitza, D. (US)
Podolská, Kateřina (UFA-U) RID, ORCIDSource Title Journal of Atmospheric and Solar-Terrestrial Physics. - : Elsevier - ISSN 1364-6826
Roč. 71, 17-18 (2009), s. 2055-2063Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords Electron temperature ; Solar activity variation ; Latitudinal and field aligned profiles ; Heat flux 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 000272985200044 DOI 10.1016/j.jastp.2009.09.013 Annotation A database of the electrontemperature(Te) comprising of most of the available LEO satellite easurements is used for studying the solar activity variations of Te. The Te data are grouped for two levels of solar activity, five altitude ranges between 350 and 2000km, and day and night. By fitting a theoretical expression to the Te values we obtain variation of Te along magnetic field lines and heat flux for. We have found that Te increases with increase in solar activity at low and mid-latitudes during nighttime at all altitudes studied. During daytime the Te response to solar activity depends onlatitude, altitude, and season.This analysis shows existence of anti-correlation between Te and solar activity at mid-latitudes below 700 km during the equinox and winter day hours. Heat fluxes show small latitudinal dependence for day time but substantial for nighttime. 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
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