HR: 0800h
AN: SA21B-0358    [Abstracts]
TI: Storm-time modifications of the mid-latitude nighttime ionosphere measured by the TIMED/GUVI instrument
AU: Eichert, J
EM: jim.eichert@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723
AU: * DeMajistre, R
EM: robert.demajistre@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723
AU: Paxton, L J
EM: larry.paxton@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723
AU: Kil, H
EM: hyosub.kil@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723
AU: Talaat, E
EM: elsayed.talaat@jhuapl.edu
AF: The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723
AB: The TIMED/GUVI instrument provides a global view of the nighttime ionosphere: the meridional morphology of the electron density (NmF2 and HmF2 maps) and the vertical distributions described by electron density profiles (EDPs). GUVI also provides maps of composition information provided by the O/N$_2$ ratios on the dayside and these show a strong correlation with changes in TEC. We will present studies of several storms using this data, most notably the large storms of October and November of 2003. The TIMED/GUVI data taken during these periods shows strong signatures of compositional changes and plasma transport (both horizontal and vertical) at mid-latitudes.
DE: 2403 Active experiments
DE: 2411 Electric fields (2712)
DE: 2443 Midlatitude ionosphere
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting