Definitions for "Homosphere"
The lower portion of the earth's atmosphere, characterized by relatively uniform gaseous composition. Consists of the troposphere, the stratosphere, and the mesosphere.
The lower portion of a two-part division of the atmosphere, the other which includes the heterosphere. The homosphere has no gross change in composition, that is, all of the atmosphere from the earth’s surface to 80 to 100km.
The Earth atmosphere below 105 km altitude where complete vertical mixing yields a near-homogeneous composition of about 78.1% N2, 20.9% O2, 0.9% Ar, and 0.1% CO2 and trace constituents. The homopause (or turbopause) marks the ceiling of the homosphere. The homosphere can be broadly divided into three distinct regimes: the troposphere (0 to 12 km), the stratosphere (12 to 50 km) and the mesosphere (50 to 90 km).