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- Author or Editor: G. F. Schilling x
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Abstract
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Abstract
Observations of the flattening of the earth's shadow during lunar eclipses are used to compute the magnitude of a latitudinal height variation of the atmospheric level producing the shadow boundary. By means of a postulate that this level is associated with a temperature minimum in the earth's upper atmosphere, a latitudinal variation is inferred for the mesopause, with the equatorial height being about 25 km greater than the height over the poles. Further inferences lead to the conclusion that a double mesopause may be a persistent feature, and that the separation distance between the two mesopause altitudes could vary from a maximum of about 30 km over the equator to zero over the poles. It is finally shown that these conclusions are not necessarily inconsistent with the sparse experimental data presently available.
Abstract
Observations of the flattening of the earth's shadow during lunar eclipses are used to compute the magnitude of a latitudinal height variation of the atmospheric level producing the shadow boundary. By means of a postulate that this level is associated with a temperature minimum in the earth's upper atmosphere, a latitudinal variation is inferred for the mesopause, with the equatorial height being about 25 km greater than the height over the poles. Further inferences lead to the conclusion that a double mesopause may be a persistent feature, and that the separation distance between the two mesopause altitudes could vary from a maximum of about 30 km over the equator to zero over the poles. It is finally shown that these conclusions are not necessarily inconsistent with the sparse experimental data presently available.
