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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

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

Fig. 2

Results of TMD normalized to 400km for Swarm-A (assimilated) and Swarm-B/C (validation). Observations (yellow), reference run (red) and analysis (blue) are shown for the 3 days 16–18 March 2015. The differences between reference and analysis during the main and recovery phases show the effect of data assimilation along the orbit of Swarm satellites. Differences up to \(2\times 10^{-12}\) kg.m\(^{-3}\) are found during the peak of the storm

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