The scientific study of the atmosphere, particularly its physical properties, composition, and behavior at different altitudes.
From Greek 'aero-' (air) + '-logy' (study of). Emerged in the 19th century as meteorologists needed a term for the developing field of atmospheric science beyond simple weather observation.
Aerology bridges meteorology and physics—scientists studying the upper atmosphere discovered that air behaves completely differently as you climb higher, revealing secrets about ozone, jet streams, and climate that ground-based measurements could never reveal.
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