Upper atmosphere is a collective term that refers to various layers of the
atmosphere of the Earth above the
troposphere
The troposphere is the first and lowest layer of the atmosphere of the Earth, and contains 75% of the total mass of the planetary atmosphere, 99% of the total mass of water vapour and aerosols, and is where most weather phenomena occur. Fro ...
and corresponding regions of the atmospheres of other planets, and includes:
* The
mesosphere, which on Earth lies between the altitudes of about , sometimes considered part of the "middle atmosphere" rather than the upper atmosphere
* The
thermosphere, which on Earth lies between the altitudes of about
* The
exosphere, which on Earth lies between the altitudes of about and
* The
ionosphere, an ionized portion of the upper atmosphere which includes the upper mesosphere, thermosphere, and lower exosphere and on Earth lies between the altitudes of
See also
*
Geospace
Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
*
Magnetosphere
References
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Atmosphere of Earth
Atmosphere