Results 211 to 220 of about 8,248 (257)
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Icarus, 1990
Abstract We have reexamined the aeronomic model of Titan's thermosphere by A.J. Friedson and Y.L. Yung ( J. Geophys. Res. 89, A1, 85–90). Our computations disagree with theirs on the evaluation of the solar heating profile. We attribute this discrepancy to a numerical error in their code.
Emmanuel Lellouch +3 more
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Abstract We have reexamined the aeronomic model of Titan's thermosphere by A.J. Friedson and Y.L. Yung ( J. Geophys. Res. 89, A1, 85–90). Our computations disagree with theirs on the evaluation of the solar heating profile. We attribute this discrepancy to a numerical error in their code.
Emmanuel Lellouch +3 more
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Nitric oxide in the lower thermosphere
Planetary and Space Science, 1992Abstract Satellite measurements of nitric oxide in the lower thermosphere (100–120 km) show the density to be highly variable. The variation at low latitudes is correlated with solar activity and the variation at polar latitudes is connected with geomagnetic activity. A study of a one-dimensional, photochemical model shows that calculations of nitric
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A theory of thermospheric dynamics—II
Planetary and Space Science, 1969Geomagnetic activity, 27 day variation, and semiannual variation of thermosphere affected by solar ...
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Ground state of the thermosphere and substorm time thermospheric response
The thermospheric composition (O/N2 ratio and NO) condition represents the state of the thermosphere. Significant changes in thermospheric composition and neutral wind are often observed during non-storm time (e.g. a weak substorm on May 29, 2023) due to continous energy and momentum input from solar wind to the geospace.  It is challenging toYongliang Zhang +4 more
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Planetary and Space Science, 1992
Abstract The photochemistry of NO, N(2D) and N(4S) and results of recent space measurements of their density distribution are discussed. In particular, the role of the reaction between metastable N(2D) atoms and O2 as a source of O(1D) is discussed in the light of laboratory and aeronomical observations.
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Abstract The photochemistry of NO, N(2D) and N(4S) and results of recent space measurements of their density distribution are discussed. In particular, the role of the reaction between metastable N(2D) atoms and O2 as a source of O(1D) is discussed in the light of laboratory and aeronomical observations.
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Energetics of the midlatitude thermosphere
Journal of Atmospheric and Terrestrial Physics, 1976Thermospheric energetics is examined from the point of view of atomic and molecular processes which convert solar EUV radiative energy into kinetic energy of the ambient electron, ion, and neutral gases. The energy flow from photon to photoelectron-ion pair through energy loss and ion-molecule transfer to eventual electron-ion recombination is traced ...
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Transport Processes in the Thermosphere
1972The atmosphere is highly stratified, even to high levels, and hence important transport questions arise in which vertical transport alone constitutes a useful approximation. Thus, the thermosphere was first described in terms of molecular conduction transferring heat from higher levels to lower, which is required because of the lack of adequate energy ...
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