Definition
A vertical measurement of the atmosphere, taken to record temperature, pressure, humidity, and wind at successive altitudes. Soundings are typically made by weather balloons (radiosondes) released twice daily and provide the data used to build upper-air charts and forecast products.
Plain English
A reading of what the air is doing at different heights above the ground -- how warm it is, how moist it is, and which way the wind is blowing as you go up.
Context Anchor
Pilots encounter soundings in aviation weather discussions when checking cloud layers, icing risk, thunderstorm potential, turbulence, and winds above an airport or route.
Derivation
From the old nautical practice of 'sounding' the depth of water by lowering a weighted line. Meteorologists borrowed the word for probing the vertical depth of the atmosphere -- same idea of measuring downward (or upward) through an unseen column.
Why Pilots Care
Reveals atmospheric stability and helps forecast turbulence, icing, or thunderstorm development before flight.
Grounding Statement
Picture a weather balloon rising from the ground and reporting what the air is like at each height as it climbs.
Intuition Check
Sounding does not mean a noise here. It means measuring or probing the atmosphere to learn what the air is like above a location.
Example Sentence 1
The morning sounding showed a temperature inversion at 3,000 feet, which explained the smooth ride above the haze layer.
Example Sentence 2
Before departure the pilot checked the latest sounding for any signs of convective activity.