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Earth, Planets and Space
Figure 1 | Earth, Planets and Space

Figure 1

From: Global and frequent appearance of small spatial scale field-aligned currents possibly driven by the lower atmospheric phenomena as observed by the CHAMP satellite in middle and low latitudes

Figure 1

A typical example of the magnetic fluctuations extracted from the observed geomagnetic field. The red, blue, and black lines show the east–west component of the original data, the smoothed data obtained by spline fitting, and their difference, i.e., the high-pass filtered data on the base line set to −6,310 nT, respectively.

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