HR: 0830h
AN: SA21B-0093    [PDF]
TI: Manifestation of the 27 day solar activity period in the topside ionosphere electron temperature
AU: * Truhlik, V
EM: vtr@ufa.cas.zc
AF: Institute of Atmospheric Physics, Acad. Sci. Czech Rep., Bocni II., Praha, 14131 Czech Republic
AU: Triskova, L
EM: ltr@ufa.cas.cz
AF: Institute of Atmospheric Physics, Acad. Sci. Czech Rep., Bocni II., Praha, 14131 Czech Republic
AU: Smilauer, J
EM: jsm@ufa.cas.cz
AF: Institute of Atmospheric Physics, Acad. Sci. Czech Rep., Bocni II., Praha, 14131 Czech Republic
AB: Response of electron temperature (Te) and density (Ne) to solar activity variation in solar maximum is studied. The 27 day period in solar activity is characterized by the F10.7 index. The Te and log Ne response was approximated by a linear dependence. The manifestation of solar flux variation in Ne is rather small. The Te dependence on the solar flux was included in an empirical model based on the Intercosmos satellites data. The model values were compared with Hinotori (altitude 600 km) and ISIS-1 (altitude 2500 km) Te data. The best agreement was found at equatorial and low latitudes. The possible mechanisms are discussed.
DE: 2419 Ion chemistry and composition (0335)
DE: 2447 Modeling and forecasting
DE: 2467 Plasma temperature and density
DE: 2481 Topside ionosphere
DE: 2499 General or miscellaneous
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting