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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Improving estimates of the ionosphere during geomagnetic storm conditions through assimilation of thermospheric mass density

Fig. 4

Electron density maps at 400 km altitude for reference, analysis and analysis—reference difference at 1200 UTC (columns) during quiet, main phase and recovery days (rows). The location of Swarm-A orbit track is represented in the difference plot (grey line) with a highlighted area (black) of the last two assimilation intervals before 1200 UTC

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