neutrosphere

neutrosphere

[′nü·trə‚sfir]
(meteorology)
The atmospheric shell from the earth's surface upward, in which the atmospheric constituents are for the most part un-ionized, that is, electrically neutral; the region of transition between the neutrosphere and the ionosphere is somewhere between 42 and 54 miles (70 and 90 kilometers), depending on latitude and season.

neutrosphere

neutrosphereclick for a larger image
A designation occasionally applied to the region of the earth's atmosphere below the ionosphere. The region is electrically neutral. The region of transition between the neutrosphere and the ionosphere is somewhere between 45 to 55 miles (70–90 km), depending on the latitude and the season.
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