Fig. 2


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The projection of the 557.7 nm (panel a)/630.0 nm (panel b) emissions shown together with the phase scintillation index σϕ over a map of Svalbard on 29 January 2020 as seen from the LYR ASC. Brighter yellow auroral emissions mean stronger intensity and bigger markers mean stronger σϕ. The markers represent σϕ measurements from NYA in red, LYR in green, HOR in cyan, HOP in magenta, and BJN in orange. While the elevated σϕ follow the shape of the 557.7 nm auroral emissions shown in panel a, they are observed displaced with regards to the 630.0 nm auroral emissions shown in panel b.

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