Semi-supervised classification of lower-ionospheric perturbations using GNSS radio occultation observations from Spire Global’s Cubesat Constellation | Journal of Space Weather and Space Climate

Topical Issue - Ionospheric plasma irregularities and their impact on radio systems

Open Access

Fig. 14

Relative density of TIDs from Spire profiles to total number of profiles gathered globally from 2020/07/23 to 2020/07/30. The TIDs are picked up at high rates (i.e., more than 50%) at mid-latitude in the northern hemisphere (summertime), especially in the Chinese and Japanese sectors, consistent with TID climatological studies.

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