atmosphere

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atmosphere

 [at´mos-fēr]
1. the entire gaseous envelope surrounding the earth and subject to the earth's gravitational field.
2. the air or climate in a particular place. adj., atmospher´ic.
3. a unit of pressure, being that exerted by the earth's atmosphere at sea level; equal to 1.01325 × 105pascals (approximately 760 mm Hg). Abbreviated atm.

at·mos·phere

(at'mŏs-fēr),
1. Any gas surrounding a given body; a gaseous medium.
See also: standard atmosphere, torr.
2. A unit of air pressure equal to 101.325 kPa.
See also: standard atmosphere, torr.
[atmo- + G. sphaira, sphere]

atmosphere

/at·mos·phere/ (at´mos-fēr)
1. the entire gaseous envelope surrounding the earth and subject to the earth's gravitational field.
2. the air or climate in a particular place.
3. a unit of pressure, being that exerted by the earth's atmosphere at sea level; equal to 1.01325 × 105pascals (approximately 760 mm Hg). Abbreviated atm.

atmosphere (atm)

[at′məsfir]
Etymology: Gk. atmos, vapor, sphaira, sphere
1 the natural body of air covers the surface of the earth. It is composed of approximately 20% oxygen, 78% nitrogen, and 1% argon and other gases, including small amounts of carbon dioxide hydrogen, and ozone as well as traces of helium, krypton, neon, and xenon and varying amounts of water vapor.
2 an envelope of gas, which may or may not duplicate the natural atmosphere in chemical components.
3 a unit of gas pressure that is usually defined as being equivalent to the average pressure of the earth's atmosphere at sea level, or about 14.7 pounds per square inch or 760 mm Hg. atmospheric, adj.

at·mos·phere

(at'mŏs-fēr)
1. Any gas surrounding a given body; a gaseous medium.
2. A unit of air pressure equal to 101.325 kPa.
See also: standard atmosphere
[atmo- + G. sphaira, sphere]

atmosphere

the gaseous envelope surrounding a particular body such as the earth, or the gaseous content of a given structure or container.

Atmosphere

A measurement of pressure. One atmosphere equals the pressure of air at sea level (14.7 pounds per square inch [psi]).

atmosphere (atm),

n the natural body of air, composed of approximately 20% oxygen, 78% nitrogen, and 2% carbon dioxide and other gases.
References in periodicals archive ?
His research focuses on understanding planetary atmospheres, interiors, and compositions.
Previous data sets had lower resolution, so the signals were essentially smeared out over a large section of the atmosphere," Amy Simon, a Goddard scientist who specializes in planetary atmospheres, and a coauthor on the paper, said in (https://www.
The CRESU (Reaction Kinetics in Uniform Supersonic Flow) technique, combined with laser photochemical methods, has been applied with great success to perform research in gas-phase chemical kinetics at low temperatures, of particular interest for astrochemistry and cold planetary atmospheres.
But it's important to note that this idea represents a departure in our understanding for how planetary atmospheres might become oxygenated.
The Hypersonic Inflatable Aerodynamic Decelerator, or HIAD, is being developed by NASA's Langley Research Center to decelerate spacecraft from the hypersonic speeds at which they travel when in space as they enter planetary atmospheres.
The physics, they write, provides a rule of thumb which should apply to the vast number of planetary atmospheres with stratospheric gases that absorb ultraviolet or visible light.
Space probes have never captured actual sounds on other worlds, but a team led by Tim Leighton of the University of Southampton in England has simulated such noises by calculating how sound would travel through various planetary atmospheres.
For those trying to understand the evolution of planetary atmospheres, this is juicy stuff.
Topics addressed by the papers include planetary masses and orbital parameters from radial velocity measurements, terrestrial planets in extrasolar planetary systems, mission requirements in the search for extrasolar planets, possible detection of biomarkers indicating the presence of life on extrasolar planets, the formation of resonant planetary systems, impact of stellar activity on the evolution of planetary atmospheres and habitability, dynamics of the extrasolar planetary, planets in double stars, the transit method of extrasolar planet detection and analysis, US programs and space missions for extrasolar planet research, and habitable zones in extrasolar planetary systems.
Ionospheres act as a boundary between planetary atmospheres and space, containing weakly ionized plasmas that are strongly coupled to their neutral atmospheres, but also influenced by the conditions in the space environment.
We will also investigate mechanisms and processes of isotope fractionation of atmophile elements in planetary atmospheres that have been irradiated by solar UV photons, with particular reference to Mars and the early Earth.
Studying the churning Venusian clouds may improve scientists' understanding of planetary atmospheres, including how Earth's might behave in the future if current warming trends continue.