Atmosphere

thumb|upright=1.5|The atmospheric gases around Earth Rayleigh scattering|scatter blue light (shorter wavelengths) more than light toward the red end (longer wavelengths) of the [[visible spectrum; thus, a blue glow over the horizon is seen when observing Earth from outer space. The Moon is visible in the background.]]

atmospheric heat retention

thumb|upright=1.5|A picture of Earth's troposphere with its different cloud types of low to [[high altitudes casting shadows. Sunlight is reflected off the ocean, after it was filtered into a reddish light by passing through much of the troposphere at sunset. The above lying stratosphere can be seen at the horizon as a band of its characteristic glow of blue scattered sunlight.]] thumb|right|upright=1.35|Atmospheric circulation: the three-cell model of the Atmospheric circulation|circulation of the planetary atmosphere of the Earth, of which the troposphere is the lowest layer.

thumb|upright=1.25|Afterglow of the [[troposphere (orange), the stratosphere (blue) and the mesosphere (dark), at which atmospheric entry of objects begins, as in this case of a spacecraft reentry that leaves contrails.]]

thumb|upright=1.5|Earth's atmosphere as it appears from space, as bands of different colours at the horizon. From the bottom, afterglow illuminates the [[troposphere in orange with silhouettes of clouds, and the stratosphere in white and blue. Next the mesosphere (pink area) extends to just below the edge of space at one hundred kilometers and the pink line of airglow of the lower thermosphere (dark), which hosts green and red aurorae over several hundred kilometers.]]

thumb|upright=1.3|Earth's night-side upper atmosphere appearing from the bottom as bands of afterglow illuminating the [[troposphere in orange with silhouettes of clouds, and the stratosphere in white and blue. Next the mesosphere (pink area) extends to the orange and faintly green line of the lowest airglow, at about one hundred kilometers at the edge of space and the lower edge of the thermosphere (invisible). Continuing with green and red bands of aurorae stretching over several hundred kilometers.]] thumb|upright=0.8|A diagram of the layers of atmosphere of Earth|Earth's atmosphere

thumb|80px|right|Diagram showing the five primary layers of the Earth's atmosphere: exosphere, thermosphere, [[mesosphere, stratosphere, and troposphere. The layers are to scale. From the Earth's surface to the top of the stratosphere (50km) is just under 1% of Earth's radius.]]

graph of the accumulation of CO2 in the Earth's atmosphere in Hawaii since 1958

The thermopause is the atmospheric boundary of Earth's energy system, located at the top of the thermosphere. The temperature of the thermopause could range from nearly absolute zero to .

altitude above which water boils at human body temperature, making it absolutely impossible for humans to survive unpressurized; approx. 18–19 km above sea level

climatic effect causing a planet's atmosphere to trap heat and prevent cooling

obsolete unit of pressure

loss of planetary atmospheric gases to outer space

air that has been condensed into a liquid

Methane in Earth's atmosphere

meteorological phenomenon

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constituent gas of the troposphere

shower of particles from a high energy cosmic ray hitting Earth's atmosphere

movement of colder, more dense air downwards within the atmosphere

unwanted signals, echoes, or images on the face of the display screen, which interfere with the observation of desired signals

region of the Earth's atmosphere in which air density or atmospheric pressure falls below a technically significant level

high-altitude atmospheric effect

Atmosphere of a protoplanet

layer within the Earth's mesosphere

regulation of atmospheric gases in agricultural storage

dust made from soil minerals

ability to absorb pollution

diffraction of waves in the atmosphere