What does troposphere mean?
The troposphere is the lowest major layer of Earth's atmosphere, extending from the surface to the tropopause, a boundary whose height varies with latitude and atmospheric conditions. It is the layer in which clouds, precipitation, storms, and most other weather phenomena occur. Its temperature generally falls as altitude increases, and its changing air masses and circulation strongly influence climate and weather patterns. The word is especially associated with meteorology, climatology, aviation, and atmospheric research. In contrast to the stratosphere above it, the troposphere is where the atmosphere interacts most directly with the ground and contains nearly all of the water vapour involved in ordinary weather. It is therefore a useful term for anyone seeking to distinguish everyday atmospheric conditions from the more stable layers above them.
nounThe lowest major layer of Earth's atmosphere, extending from the surface to the tropopause and containing most of the planet's weather. Temperature generally decreases with altitude in this layer.
- The lowest layer of the atmosphere, between Earth's surface and the tropopause, in which most weather occurs and temperature generally decreases with altitude.
"Clouds and storms develop in the troposphere, where the atmosphere is warmest near Earth's surface."
"Aircraft on many long-distance flights cruise in the lower stratosphere, above most of the troposphere's weather."
"Scientists studying the circulation of the troposphere use data from satellites and weather balloons."
The plural is appropriate when referring to the distinct tropospheres of multiple planets or comparable planetary bodies.
"Each planet has its own troposphere, with depth and temperature patterns determined by its gravity and atmosphere."
Almost every rainstorm, snowstorm, and cloud you have ever experienced happens in the troposphere, Earth's lowest atmospheric layer.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does troposphere come from?
Troposphere was formed in the early 20th century from Greek tropos, meaning a turning or change, together with English sphere. The Greek element refers to the change of temperature with height that characterizes the layer and marks the turning point at the tropopause. Related English words include tropic, tropical, and tropism, all of which ultimately draw on the same Greek root.
Related word forms
How troposphere is actually used
This is a formal scientific and geographical term, used especially in meteorology, atmospheric science, aviation, and discussions of climate. It is not normally used in everyday conversation.
Easily confused with troposphere
The troposphere is the lowest atmospheric layer and contains most weather, whereas the stratosphere lies above it and contains the ozone layer.