Validation of Clyde River SuperDARN radar velocity measurements with the RISR-C incoherent scatter radar

• Published in: Annales Geophysicae
• Main Authors: A. Koustov, R. Gillies, P. Bankole
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2018
• Subjects: Science; Q; Physics; QC1-999; Geophysics. Cosmic physics; QC801-809; Canada; Resolute Bay; Clyde River
• Online Access: https://doi.org/10.5194/angeo-36-1657-2018; https://doaj.org/article/b2d57043d6174d4082029c7c87fca0c5

The study considers simultaneous plasma velocity measurements in the eastward direction carried out by the Clyde River (CLY) Super Dual Auroral Radar Network (SuperDARN) high-frequency (HF) radar and Resolute Bay (RB) incoherent scatter radar – Canada (RISR-C). The HF velocities are found to be in reasonable agreement with RISR velocities up to magnitudes of 700–800 m s −1 while, for faster flows, the HF velocity magnitudes are noticeably smaller. The eastward plasma flow component inferred from SuperDARN convection maps (constructed for the area of joint measurements with consideration of velocity data from all the radars of the network) shows the effect of smaller HF velocities more notably. We show that the differences in eastward velocities between the two instruments can be significant and prolonged for observations of strongly sheared plasma flows.