troposphere
troposphere — noun
- tropospheresingular
- tropospheresplural
1. the bottommost band of air around the Earth, stretching from the ground up to ro
the bottommost band of air around the Earth, stretching from the ground up to roughly 10 to 15 kilometres high. Nearly all weather occurs within this band, and the air grows colder as you go higher.
Most aeroplanes fly in the upper part of the troposphere to avoid the worst weather.
upper part of the troposphere
As Jin climbed the mountain, he learned that the troposphere gets colder at higher altitudes.
personal experience with altitude
The troposphere contains about eighty percent of the mass of the Earth's atmosphere.
Pollution from factories can stay trapped in the troposphere for days before it clears.
Weather balloons rise through the troposphere and measure temperature, pressure and humidity.
- lower atmosphere
much broader and less precise; includes parts of the stratosphere in some uses
- stratosphere
the layer directly above the troposphere, where temperature rises with altitude
文法句型
the troposphere
in / through / above the troposphere
用法筆記
The height of the troposphere varies by latitude — roughly 8 to 10 km at the poles and 16 to 18 km at the equator. The boundary where the troposphere ends and the stratosphere begins is called the tropopause.
常見錯誤
2. the lowest of the gas layers that surround any planet, from the planet's surface
the lowest of the gas layers that surround any planet, from the planet's surface up to the boundary with the next higher layer
On Venus, a thick carbon dioxide atmosphere pushes the troposphere much higher than on Earth.
comparative: Venus vs Earth
The troposphere of Mars contains dust storms that can cover the whole planet.
Scientists study the troposphere of Jupiter to understand its violent weather patterns.
Temperatures in a planet's troposphere usually fall as you travel away from the surface.
文法句型
the troposphere of + planet
用法筆記
To distinguish from Earth's troposphere, always name the planet (e.g. 'the troposphere of Jupiter'). Without a planet name, readers understand Earth's layer.