homosphere

homosphere

[′hä·mə‚sfir]
(meteorology)
The lower portion of a two-part division of the atmosphere (the upper portion is the heterosphere) according to the general homogeneity of atmospheric composition; the region in which there is no gross change in atmospheric composition, that is, all of the atmosphere from the earth's surface to about 50 to 62 miles (80-100 kilometers).

homosphere

The lower portion of a two-part division of the atmosphere according to the general homogeneity of atmospheric composition. The other part is the heterosphere. The homosphere is the region in which there is no gross change in atmospheric composition—that is, all the atmosphere from the earth's surface to about 50 miles (80 km). The homosphere is about equivalent to the neutrosphere, and it includes the troposphere, stratosphere, and mesosphere; it also includes the ozonosphere and at least parts of the chemosphere. See homopause.