Mesospheric planetary waves over Antarctica during 2002
Article first published online: 4 NOV 2005
Copyright 2005 by the American Geophysical Union.
Geophysical Research Letters
Volume 32, Issue 21, November 2005
How to Cite
2005), Mesospheric planetary waves over Antarctica during 2002, Geophys. Res. Lett., 32, L21804, doi:10.1029/2005GL023886., , , and (
- Issue published online: 4 NOV 2005
- Article first published online: 4 NOV 2005
- Manuscript Accepted: 26 SEP 2005
- Manuscript Revised: 21 SEP 2005
- Manuscript Received: 22 JUN 2005
 Wind measurements from a series of atmospheric radars located around Antarctica have been used to characterize the mesospheric planetary-wave field during the winter of 2002. Combining winds from the medium-frequency (MF) radar at Rothera (68°S, 68°W) and the SuperDARN high-frequency meteor-wind radars at Halley (76°S, 27°W), Sanae (72°S, 3°W) and Syowa (69°S, 40°E) stations, we have been able to measure the period, wavenumber and propagation direction of the most prominent planetary waves. The results show that the planetary-wave field before the unusual stratospheric warming in 2002 was dominated by a very long-period (τ ≈ 43 days), westward and upward-propagating zonal planetary wavenumber 1. However, after the stratospheric warming events began in late winter, the character of the wave field changed and a shorter period (τ ≈ 14 days), westward, zonal wavenumber 1 became established. It would appear that the previously reported oscillations of the mesospheric hydroxyl airglow temperatures at Rothera and Halley, which were strongly anti-correlated to the meridional wind, were the result of these planetary waves.