Heterosphere

From AMS Glossary
Jump to: navigation, search


heterosphere

The upper portion of a two-part division of the atmosphere according to the general homogeneity of atmospheric composition; the layer above the homosphere.

The heterosphere is characterized by variation in composition and mean molecular weight of constituent gases. This region starts at 80–100 km above the earth and therefore closely coincides with the ionosphere and the thermosphere.
See atmospheric shell.

Personal tools
Namespaces
Variants