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Data for altitudes up to 60 km over Fort Greely, Alaska, are analyzed and presented as a description of the atmospheric acoustic structure for subpolar northern hemisphere latitudes. Mean-component sonic profiles are constructed and discussed. Results show that detailed regional and seasonal acoustic profiles can be established with data now available; however, a more inclusive and comprehensive treatment of atmospheric acoustic data is desirable. One such study that is currently being made at White Sands Missile Range is described.
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L. Williamson (1963) studied this question.
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