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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: A framework for estimating spherical vector fields using localized basis functions and its application to SuperDARN data processing

Fig. 3

The result of the estimation at 08:30 UT on March 17, 2015 for the northern hemisphere. The upper-left panel shows the estimated stream function, the upper-right panel shows the uncertainty of the stream function, the lower-left panel shows the estimated plasma drift velocity distribution (arrows) and its uncertainty (color code), and the lower-right panel shows the cumulative number of data points for each bin for the past 10 minutes. In each panel, the center is the north pole and the outer boundary is the line of \(40^{\circ }\) geomagnetic latitude. The unit of the stream function is \(R_I\cdot \mathrm {m}/\mathrm {s},\) where \(R_I\) is the radius of the ionosphere

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