Results 121 to 130 of about 30,800 (166)

Dynamics of the upper atmosphere

Journal of Geophysical Research, 1959
The mean temperature and motional structure of the stratosphere, mesosphere, and lower ionosphere are described, and the thermodynamics of these regions is considered briefly. Possible disturbances on the mean motion are discussed. It is concluded that vertical convection is a very unlikely cause of such disturbances, that slantwise convection ...
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Calculation of the upper atmosphere dynamic characteristics from ionospheric data

Conference Proceedings 2000 International Conference on Mathematical Methods in Electromagnetic Theory (Cat. No.00EX413), 2002
Calculation of the thermospheric wind vertical component is discussed. Measured values of the vertical plasma drift velocity, charged particles' temperature and parameters of the electron density profile are used in the calculations.
V.I. Taran, D.A. Dzyubanov, Y.I. Grigorenko, V.N. Lysenko   +3 more
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Solar system upper atmospheres: Photochemistry, energetics, and dynamics

2002
The physical modeling of most upper atmospheric processes begins with the approximation and solution of one or more of the three primary equations of conservation-mass (i.e., continuity), energy, and momentum. Here we outline the main components of these equations as they relate to the upper atmospheres of the solar system, reviewing the salient ...
G. Randall Gladstone, Roger V. Yelle, T. Majeed   +2 more
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Gas dynamics of a rocket plume in the upper atmosphere

Journal of Russian Laser Research, 2010
We study the expansion of a rocket exhaust plume in the direction perpendicular to the rocket motion. We compare numerical calculations with a self-similar approximation for a strong cylindrically symmetric explosion and show that, if the rocket velocity V∞ is high enough and exceeds the sum of the exhaust gas velocity Ve and the sound velocity Vs (V∞>
Alexander G. Molchanov, Yulii V. Platov
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A review of: “Dynamics of the upper atmosphere”

Geophysical & Astrophysical Fluid Dynamics, 1981
Abstract By Susumu Kato. Center for Academic Publications Japan/D. Reidel Publishing Company, 1980. xiii+233pp. (£15.95) (ISBN 90277 1132 1).
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The dynamical response of the lower atmosphere to upper atmosphere forcing and the sun-weather problem

Archives for Meteorology, Geophysics, and Bioclimatology Series A, 1983
A time-dependent, primitive-equation numerical model is used to test the hypothesis that solar variations induce changes in the distributions of basic state variables at high levels in the atmosphere, and thus induce changes in planetary-scale wave structure at lower atmospheric levels.
A. F. C. Bridger, D. E. Stevens
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Rarefied gas dynamic effects on mass spectrometric studies of upper planetary atmospheres

AIAA Journal, 1975
Results are presented of measurements obtained with an open-source mass spectrometer both in earth orbit and in a laboratory molecular beam facility. The mass spectrometer/ion source combination was developed in the laboratory to be operable in either of two modes by altering ion extraction potential on ground command, i.e., as a stagnation cavity or ...
J. B. French, N. M. Reid, A. O. Nier, J. L. Hayden   +3 more
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UPPER ATMOSPHERE DYNAMICS:

2022
S. W. BOUGHER, M. J. ALEXANDER, H. G. MAYR   +2 more
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Upper Atmosphere Research Satellite In-Flight Dynamics Study: Lessons Learned

Journal of Spacecraft and Rockets, 2000
The lessons learned from investigating the Upper Atmosphere Research Satellite (UARS) in-e ight dynamics are summarized.Keyto thesuccessofthestudywastheapplicationofknowledgediscoveryindatabasetechniques.The isolationofdisturbanceswascriticaltoidentifyingtheeffectofindividualdisturbancesonthespacecraft.Numerous types of data were examined for spatial ...
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Mathematical Modeling of Dynamics Processes in the Upper Atmosphere and Ionosphere

2010
In this chapter, the achievements of the basic researches on the upper atmosphere and ionosphere processes with the mathematical modeling methods are briefly presented. The mathematical problem of the model atmosphere/ionosphere description, the existing global theoretical model of environment, and the results of the investigations as well as their ...
I. V. Karpov, G. V. Golubkov
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