Computer Science – Sound
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jatp...46..961v&link_type=abstract
(International Association of Geomagnetism and Aeronomy and International Association of Meteorology and Atmospheric Physics, Un
Computer Science
Sound
16
Atmospheric Circulation, Atmospheric Sounding, High Frequencies, Mesopause, Radar Measurement, Gravity Waves, Vertical Motion, Wind Measurement
Scientific paper
Recent studies of the dynamics of the mesopause region using ground based radars are reviewed. While results from a range of techniques are discussed, particular emphasis is given to measurements made using radars operating in the 2-6 MHz frequency range and which make use of signals partially reflected from ionized irregularities in the 60-100 km height range. Most MF/HF partial reflection (PR) radars use the spaced antenna method and a brief discussion of recent advances in this technique is given. The review concentrates on observations of: (1) prevailing winds; (2) planetary scale oscillations with periods greater than 1 day; and (3) gravity wave and small scale motions. Where possible, hemispheric differences are stressed. The review concludes with some suggestions for future lines of research.
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