Results 81 to 90 of about 11,342 (218)
Determination of the most pertinent EUV proxy for use in thermosphere modeling
, 2011 International audience[1] Two major issues in the specification of the thermo-spheric density are the definition of proper solar inputs and the empirical modeling of thermosphere response to solar and to geomagnetic forcings.
Dudok de Wit, Thierry +3 more
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An empirical model of long-term thermospheric density change
, 2012 Predicting the positions of satellites in Low Earth Orbit (LEO) requires a comprehensive understanding of the dynamic nature of the atmosphere. For objects in LEO the most significant orbit perturbation is atmospheric drag, which is a function of the ...
Saunders, Arrun, Saunders, A.
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Thermosphere and exosphere of hot Jupiters [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractHere we describe the observations and the resulting constraints on the upper atmosphere (thermosphere and exosphere) of hot Jupiters. In particular, observations and theoretical modeling of hot-Jupiter evaporation are described. The observations allowed the discovery that the planet orbiting HD209458 has an extended atmosphere of escaping ...
openaire +2 more sources
Journal of Space Weather and Space Climate, 2013 The thermospheric atomic oxygen red line is among the brightest in the auroral spectrum. Previous observations in Longyearbyen, Svalbard, indicated that it may be intrinsically polarized, but a possible contamination by light pollution could not be ruled
Moen Joran +9 more
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A three dimensional model of the Venusian thermosphere with superrotation [PDF]
, 1986 An improved three dimensional spectral model of the thermosphere of Venus is described. The model solves the Navier-Stokes equations and includes nonlinear effects for an arbitrary number of atmospheric species.
Harris, I. +2 more
core
The mid-latitude thermosphere [PDF]
Planetary and Space Science, 1988 The F-region ionosphere at middle latitudes moves up and down in an irregular manner on a time scale of hours. This behavior is a manifestation of complex coupling between photochemical, fluid dynamical, and electrodynamical processes in the thermosphere.
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Editorial: Coupling Processes in Terrestrial and Planetary Atmospheres
Frontiers in Astronomy and Space Sciences, 2022 Erdal Yiğit +8 more
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Data‐Driven Satellite Drag Modeling Without Dynamic Knowledge of the Atmosphere
Space WeatherIncreasing congestion in low Earth orbit (LEO) from new satellite deployments and a growing debris population has made accurate orbital trajectory prediction essential for anticipating and avoiding potential collisions on a regular basis.
William E. Parker, Richard Linares
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Journal of the Meteorological Society of Japan. Ser. II, 2007 Major advances in our understanding of the dynamics of Earth's thermosphere (≈ 90-500 km) during the past 25 years are reviewed. Since the thermosphere is primarily an externally-forced system, a broad overview of the energy input, conversion and transport mechanisms in the ionosphere-thermosphere system is first provided. This serves as background and
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Do Eclipse‐Induced Thermospheric TADs Originate From Above or Below?
Geophysical Research LettersSolar eclipses generate significant wave activity in the Earth's upper atmosphere. The source region of eclipse‐induced Traveling Atmospheric Disturbances (TADs) in the upper thermosphere—particularly the relative contributions of gravity waves from the ...
Yu Jiao +5 more
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