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.
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Among its applications, it should be highlighted the study of galaxies, stars and planetary systems dynamics; the composition and dynamics of planetary atmospheres and the evolution of galaxy clusters.
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Stern's background includes Master of Science degrees in aerospace engineering and planetary atmospheres from the University of Texas, Austin, and a Doctorate in astrophysics and planetary science from the University of Colorado, Boulder.
The relatively high concentration of krypton and xenon detected by the spectrometer may thus attest to the importance of comets in determining the chemical evolution of planetary atmospheres.
In addition, the Solar System Exploration Division performs a variety of research pertaining to the composition, chemistry, and dynamics of planetary atmospheres, planetary and cometary magnetism and magnetospheres, planetary geology and geodynamics, planetary electrical processes, geodetic very-long baseline interferometry, astrobiology, and studies of the Moon, asteroids, and Earth as a planet.
The instrument is used for high resolution studies in visible and ultraviolet light of both nearby star systems and distant galaxies, providing information about the motions and chemical makeup of stars, planetary atmospheres, and other galaxies.
He holds bachelor's degrees in physics and astronomy and master's degrees in aerospace engineering and planetary atmospheres from the University of Texas, Austin.
But during the past decade, researchers uncovered a major problem with this explanation for the evolution of planetary atmospheres.
Contract activities include scientific programming and analysis; computer facility support; library and publication services; logistical and utility management; program management; global climate modeling; Earth observations; and planetary atmospheres.