Tropopause
Upper boundary of the troposphere (about 15 km), where the temperature gradient goes to zero.
Troposphere ...
Tropopause - The upper boundary of the troposphere of the atmosphere of a planet
Troposphere - The lowest layer of the atmosphere of a planet, within which convection produces weather ...
Tropopause
The tropopause is the boundary in the Earth's atmosphere between the troposphere and the stratosphere. Going upward from the surface, it is the point where air ceases to cool with height, and becomes almost completely dry....
TROPOPAUSE
The tropopause is the boundary zone (or transition layer) between the troposphere and the stratosphere of the Earth's atmosphere. The tropopause is characterized by little or no change in temperature as altitude increases.
This tropopause ceiling, most evident in the tropics, puts the lid on clouds while allowing water vapor and ozone to be exchanged.
Beyond the tropopause is the stratosphere, up to about 50 km. Temperatures increase in this region as you go outward, up to a maximum of about −3°C. Nacreous clouds live here.
tropopause (NASA Thesaurus / NASA SP-7, 1965) The boundary between the troposphere and stratosphere, usually characterized by an abrupt change of lapse rate.
In my experience, tropopause turbulence has the least diurnal variation: if it's bad at 8pm, it's likely to be just as bad at midnight. In fact, it may appear to get worse, because it becomes easier to see as surface boundary turbulence subsides.
(2003) took air samples at 41 km over Hyderabad, India â€" above the tropopause where mixing from the lower atmosphere is unexpected â€" from which rod and coccoid bacteria were isolated.
The middle layer of the Uranian atmosphere is the stratosphere, where temperature generally increases with altitude from 53 K in the tropopause to between 800 and 850 K at the base of the thermosphere.
There is a thin buffer zone between the troposphere and the next layer called the tropopause.
The Stratosphere and Ozone Layer
Above the troposphere is the stratosphere, where air flow is mostly horizontal.
Just below the boundary of the stratosphere ("tropopause"), air which has cooled is forced down again by warmer air rising from below.
However there is even less water vapour on Saturn due to even lower temperatures in the gas giant's tropopause. "On Saturn the tropopause temperature is around 85 - 90 Kelvin," says Hartogh.
When the rising cumulus columns meet the tropopause, or base of the stratosphere, at about 15,000 kilometers (50,000 feet), they reach a ceiling and can no longer rise buoyantly by convection.
The clouds are located in the tropopause and are arranged into bands of different latitudes, known as tropical regions. These are sub-divided into lighter-hued zones and darker belts.
It is roughly constant at 140 K above that level (called the tropopause).
The jet stream is a high-speed wind that is usually found at high altitudes, between 25,000 and 45,000 feet (just below the tropopause).
The interval of time between two successive vernal equinoxes. It is equal to 365.242 mean solar days. [H76]
Tropopause
Upper boundary of the troposphere (about 15 km), where the temperature gradient goes to zero. [H76]
Troposphere ...
In general, this will extend to the tropopause, after which the temperature gradient reverses direction and the wind speeds diminish. Thus, jet streams are usually found in the upper troposphere (i.e., at levels of nine to 18 kilometers).
The radiative-convective boundary thus marks the true dynamical boundary between the tropopause and stratosphere, although it occurs slightly deeper than the temperature inversion (which occurs at mbar in ).
SP-7, 1965) A type of photoelectric photometer used in a method of determining high altitude winds on the assumption that stellar scintillation is caused by atmospheric inhomogeneities ( schlieren) being carried along by the wind near tropopause ...
 See also: Atmosphere, Altitude, Earth, Temperature, Solar
|
