Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2013, Vol. 10, No. 1, pp. 103-111
Studying high-latitude ionosphere using UV-spectrometry, Global Ionospheric maps and high-orbital radiotomography
E.S. Andreeva, S.A. Kalashnikova
, V.E. Kunitsyn, I.A. Nesterov
M.V. Lomonosov Moscow State University, Moscow 119991, Russia
In this work we present the results of the studies of high-latitude ionosphere using data of GUVI ultraviolet spectrometer instrument, Global Ionospheric Maps and high-orbital radiotomography. We present comparison of the results obtained using these techniques for various geomagnetic conditions in the years 2003-2007. Our results show that spatial resolution of Global Ionospheric Maps is weaker than it is stated. Various ionospheric irregularities and wave structures with spatial dimensions of 10-15˚ which are distinctly observed in GUVI data and tomographic reconstructions may not be present on Global Ionospheric Maps. These circumstances should be taken into account while using GIMs for ionospheric studies, especially in disturbed geomagnetic conditions.
Keywords: ionosphere, radiotomography of the ionosphere, TEC, GIM, UV-spectrometry, GUVI.
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