Lidar studies of the nighttime sodium layer over Urbana, Illinois. II - Gravity waves

Details Lidar studies of the nighttime sodium layer over Urbana, Illinois. II - Gravity waves Lidar studies of the nighttime sodium layer over Urbana, Illinois. II - Gravity waves

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.4673g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, May 1, 1987, p. 4673-4694.

Physics

95

Atmospheric Composition, Gravity Waves, Mesosphere, Optical Radar, Sodium, Climatology, Kinetic Energy, Monochromatic Radiation, Night Sky, Perturbation Theory, Radar Measurement

Scientific paper

On 34 nights between December 1980 and May 1986, 171 monochromatic gravity waves were observed in the mesospheric Na layer at Urbana, Illinois, using a lidar system. The characteristics of the waves are compared with radar measurements of gravity wave activity and theoretical models of wave saturation and dissipation phenomena. The measured vertical wavelengths range from 2 km to 17 km, the observed periods range from 25 min to 800 min, and the horizontal wavelengths range from 20 km to almost 3000 km. The most apparent seasonal characteristic of the waves is the absence in summer of periods greater than 200 min and horizontal wavelengths greater than 400 km.

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