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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 16, issue 10
Ann. Geophys., 16, 1392–1399, 1998
https://doi.org/10.1007/s00585-998-1392-z
© European Geosciences Union 1998

Special issue: VIIIe EISCAT

Ann. Geophys., 16, 1392–1399, 1998
https://doi.org/10.1007/s00585-998-1392-z
© European Geosciences Union 1998

  31 Oct 1998

31 Oct 1998

Validation of the CUTLASS HF radar gravity wave observing capability using EISCAT CP-1 data

N. F. Arnold, T. B. Jones, T. R. Robinson, A. J. Stocker, and J. A. Davies N. F. Arnold et al.
  • Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, United Kingdom

Abstract. Quasi-periodic fluctuations in the returned ground-scatter power from the SuperDARN HF radars have been linked to the passage of medium-scale gravity waves. We have applied a technique that extracts the first radar range returns from the F-region to study the spatial extent and characteristics of these waves in the CUTLASS field-of-view. Some ray tracing was carried out to test the applicability of this method. The EISCAT radar facility at Tromsø is well within the CUTLASS field-of-view for these waves and provides a unique opportunity to assess independently the ability of the HF radars to derive gravity wave information. Results from 1st March, 1995, where the EISCAT UHF radar was operating in its CP-1 mode, demonstrate that the radars were in good agreement, especially if one selects the electron density variations measured by EISCAT at around 235 km. CUTLASS and EISCAT gravity wave observations complement each other; the former extends the spatial field of view considerably, whilst the latter provides detailed vertical information about a range of ionospheric parameters.

Key words. Ionosphere (ionosphere – atmosphere interactions) · Meteorology and atmospheric dynamics (thermospheric dynamics) · Radio science (ionospheric propagations)

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