Air

Cosma / Communication / Knowledge / Realm / Terrestrial / Sphere / Air
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air : the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth — Webster See also OneLook

atmosphere : the gaseous envelope of a celestial body (such as a planet) — Webster See also OneLook

weather : the state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness — Webster See also OneLook

Encyclopedia

Atmosphere is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth’s gravity. The atmosphere of Earth protects life on Earth by creating pressure allowing for liquid water to exist on the Earth’s surface, absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation). — Wikipedia

Atmosphere (Roger A. Pielke, Encyclopædia Britannica)
Earth Atmosphere (Eric Weisstein’s World of Astronomy, Wolfram Research)

Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy. On Earth, most weather phenomena occur in the lowest layer of the planet’s atmosphere, the troposphere, just below the stratosphere. Weather is driven by air pressure, temperature, and moisture differences between one place and another. — Wikipedia

Weather (Encyclopædia Britannica)

Weather (World Meteorological Association)

Weather (Wolfram Alpha)

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Innovation

Science

Atmospheric Science is the study of the Earth’s atmosphere and its various inner-working physical processes. Meteorology includes atmospheric chemistry and atmospheric physics with a major focus on weather forecasting. Climatology is the study of atmospheric changes (both long and short-term) that define average climates and their change over time, due to both natural and anthropogenic climate variability. Aeronomy is the study of the upper layers of the atmosphere, where dissociation and ionization are important. Atmospheric science has been extended to the field of planetary science and the study of the atmospheres of the planets and natural satellites of the Solar System. — Wikipedia

Atmospheric Science (Roger A. Pielke, Encyclopædia Britannica)

Atmospheric Sciences (Wolfram Alpha)

Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. — Wikipedia

Meteorology (Encyclopædia Britannica)

Weather & Meteorology (Wolfram Alpha)

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