Abstract

In this paper we validate the method of Johnsen et al. (2012) for obtaining the cusp open/closed field line boundary (OCB) by the means of a single meridian scanning photometer (MSP). Three cases of conjugate measurements between the Longyearbyen MSP and the NOAA‐16 satellite are presented. The satellite OCB as obtained by the energetic particle detectors carried onboard the NOAA‐16 satellite is well co‐located with the OCB as obtained by the ground‐based MSP and well within the calculated uncertainties. We conclude that the method presented by Johnsen et al. (2012) for deriving the cusp OCB using a single MSP produces conscientious results.

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