Abstract
An attempt was made to determine on a global scale the zone of enhanced electron temperature (Te) in the subauroral ionosphere during magnetic storms via the combination of Te measurement data and images of stable auroral red arcs (red arcs) obtained on satellites. Data from Te measurements on the DMSP and CHAMP satellites and red-arc observation by POLAR spacecraft were used. It is shown that the zone of enhanced Te in coordinates of geographic latitude and local time can be determined during the period of red-arc manifestation based on the results of Te measurements for a relatively short time during the recovery phase of a geomagnetic storm, and the dependence of its parameters on universal time (UT control) can be found.
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ACKNOWLEDGMENTS
The geomagnetic index data were obtained from the World Data Center C2 for Geomagnetism, Kyoto (http://wdc.kugi.kyoto-u.ac.jp/dst_realtime/index.html) and the World Data System of the International Science Council (http://www.wdcb.ru/stp/geomag/geomagn_Kp_ ap_Ap_ind.ru.html). Experimental data from the DMSP and CHAMP satellites were obtained from the CEDAR Madrigal Database (http://cedar.haystack.mit.edu/) and GeoForschungZentrum (GFZ) Helmholtz Center Potsdam (ftp://anonymous@isdcftp.gfz-potsdam.de/champ/ ME/Level2/PLPT/). Images from the photometer onboard the POLAR satellite and the all-sky camera at Millstone Hill station were obtained from the Coordinated Data Analysis Web (CDAWeb) (https://cdaweb.sci.gsfc.nasa.gov) and the Boston University Imaging Science Laboratory (http://sirius.bu.edu).
Funding
The work was carried out within the framework of a state assignment (state registration number no. АААА-А21-121012000007-4) and was partially funded by the Russian Foundation for Basic Research (project no. 18-45-140037 r_a).
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Golikov, I.A., Gololobov, A.Y., Baishev, D.G. et al. Determination of the Enhancement in Electron Temperature in the Subauroral Ionosphere during Magnetic Storms on a Global Scale. Geomagn. Aeron. 61 (Suppl 1), S103–S115 (2021). https://doi.org/10.1134/S001679322201008X
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DOI: https://doi.org/10.1134/S001679322201008X