Authors:
Lopez-Gonzalez, M. J.; Rodriguez, E.; Shepherd, G. G.; Shepherd, M. G.; Sargoytchev, S.; Aushev, V. M.; Garcia-Comas, M.; Brown, S.; Wiens, H.
Journal:
CANADIAN JOURNAL OF PHYSICS
Abstract:
Long-term ground-based airglow observations with a spectral airglow temperature imager (SATI) installed at Sierra Nevada Observatory (37.06 degrees N, 3.38 degrees W) at 2900 m height are used to investigate the main features of the quasi planetary waves in the period range of 3-20 days during autumn at this latitude in the mesosphere and lower thermosphere region. The modulations of periods 5 day, (6-7) day, and 10 day have been clearly detected during autumn at this location, being the most prominent waves detected at this location during the autumn. They have a strong persistence during the autumn period and relative amplitudes are generally constant during the period although a slight tendency to increase seems to be detected towards winter.