Results 241 to 250 of about 2,078,180 (298)

Mars: Upper Atmosphere

Science, 1966
The thermal structure of the upper atmosphere of Mars has been theoretically investigated. The exospheric temperature, for a pure CO 2 model atmosphere, lies between 400° and 700°K. The origin of the Martian atmosphere is discussed in the light of these results.
S H, Gross, W E, McGovern, S I, Rasool
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Ionisation in the Upper Atmosphere

Nature, 1927
THE more important agencies which may conceivably cause the ionisation of the upper atmosphere of the earth are the ultra-violet light, α- and β-particles, all of solar origin, the penetrating radiation of cosmic origin, and the ionising radiations from terrestrial sources.
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Upper atmospheric nomenclature

Journal of Atmospheric and Terrestrial Physics, 1950
It is proposed that stratosphere shall signify solely the nearly isothermal region above the troposphere; that the layer between the stratosphere and the deep temperature minimum somewhat below 100 km be called the mesosphere; that the layer of rising temperature over this minimum be called the thermosphere.
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The upper atmosphere

Terrestrial Magnetism and Atmospheric Electricity, 1928
The density calculations of the following paragraphs are based on the assumptions of diffusion as indicated by Table 3 and temperature‐distribution as shown in Figure 7. The calculations for the atmospheric conditions of summer nights are given in detail since it was considered these figures would be the most useful.The change in atmospheric pressure ...
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The Upper Atmosphere

1990
Under the powerful ultraviolet radiation from the sun the higher and thinner layers of the atmosphere become ionized and produce important consequences for the propagation of radio waves. More generally, because of the large mean free paths the medium is not in thermal equilibrium and many complex atomic and molecular phenomena take place.
Bruno Bertotti, Paolo Farinella
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The Upper Atmosphere

2011
Conditions in the outermost region of the atmosphere differ radically from those in the lower atmosphere. The principal characteristic features are the following:
Peter Warneck, Jonathan Williams
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