Look up: Homosphere

1. homosphere
   term proposed for the atmospheric region, lying between the Earth`s surface and a height of 80 km, in which the composition of the atmosphere is...constant apart from small variations of its minor constituents. Category: The cosmos
   Found on http://www.mijnwoordenboek.nl/definition
   
   
2. homosphere
   (from the article `protonosphere`) ...atomic hydrogen and protons (ionic hydrogen) are the dominant constituents; it can be considered the outermost extension of the ionosphere. In the ... Earth`s atmosphere is segmented into two major zones. The homosphere is the lower of the two and the location in which turbulent mixing dominates the...
   Found on http://www.britannica.com/eb/a-z/h/66
   
   
3. Homosphere
   The lower layer in a two part classification of the atmosphere based on the general homogeneity of chemical composition. In this layer, nitrogen, oxygen, argon, carbon dioxide, and the trace gases dominate and remain constant in their relative proportions. The homosphere extends from the Earth's sur...
   Found on http://www.physicalgeography.net/physgeo