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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

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

Fig. 1

The profile of the basis stream function with respect to \(\Delta \theta\) for the original SECS and the proposed basis function (left) and the profile of the azimuthal component of the divergence-free SECS basis function and the proposed divergence-free basis function (right). The scale parameter \(\eta\) for the proposed basis functions is set at 131.4. In each panel, the dotted line indicates the original SECS and the solid line indicates the proposed basis function

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