Topical Issue - Space Weather Instrumentation
Open Access
Research Article

Fig. 1

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(a) Geographical map with Digisondes (red triangle) and ionosondes (red circles) locations used in this study; lines show the magnetic equator and ±15°MLAT. (b) Example of global distribution of the F2 peak points as derived from COSMIC-2 RO observations during 24 hr (25 January 2020).

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