Results 211 to 220 of about 25,918 (240)

Change in the Martian Atmosphere

1999
There are several lines of evidence that the atmosphere of Mars has significantly evolved over the history of the planet. Because Mars does not have a strong intrinsic magnetic field, the atmosphere is eroded by interactions with the solar wind. Conditions in the early solar-system significantly enhanced this loss, notably the component due to solar ...
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Determination of the temperature of the Martian atmosphere

Journal of Quantitative Spectroscopy and Radiative Transfer, 1975
Abstract We have calculated the temperature distribution of a Martian atmosphere using the high-resolution spectroscopic data of Carletonet al.(1) and the theory of Goody and Gierasch.(8) Models of the Martian atmosphere have been developed and synthetic spectra of the 1·05 μCO2 spectrum in the Martian atmosphere have been computed.
A. Sharma, V.B. Singh
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Experimental and numerical investigation on Martian atmosphere entry

39th Aerospace Sciences Meeting and Exhibit, 2001
A numerical and experimental investigation was performed to study the aerothermodynamic problems of entry into the Martian atmosphere. The mathematical and physical model used to study the flowfield around a capsule entering a CO 2 environment is described. Computational fluid dynamics tools have been applied to solve the system of governing equations.
PATERNA D., MONTI R., SAVINO, RAFFAELE, ESPOSITO A.   +3 more
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Atmospheric effects on Martian aerocapture

17th Atmospheric Flight Mechanics Conference, 1990
A preliminary study of the effects of the atmosphere on Martian aerocapture has been completed at NASA-Johnson. Nominal cases were defined and several types of density dispersions utilized to show the effect of L/D ratio on aerocapture performance. Both open and closed loop three-degree-of-freedom simulations were developed.
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Ozone heating in the Martian atmosphere

Icarus, 1991
In addition to establishing that ozone constitutes a nonnegligible but only minor heat source in the Martian atmosphere, it is presently shown that the ozone abundance's hemispherical asymmetry is an improbable factor in the establishment of the polar caps' observed hemispherical asymmetry, since ozone absorbs less than 1 percent of the total solar ...
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Diurnal Tide in the Martian Atmosphere

Journal of the Atmospheric Sciences, 1976
Classical atmospheric tidal theory is extended to include the effects of large-amplitude planetary-scale variations of the terrain height. Utilizing simple models of the thermotidal forcing, the resulting technique is used to compute the diurnal tide in both the dust-free and the dust-laden Martian atmosphere.
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Probing the Martian Atmosphere in the Ultraviolet

Optical Remote Sensing of the Atmosphere, 1993
Several fundamental differences in atmospheric chemistry exist between Mars and the Earth. The martian atmosphere is primarily CO2 (95%), with strong vertical mixing, cold temperatures (typically 220K), low pressures (6 mb at the surface), high atmospheric dust and cloud particle content, and no man-made atmospheric constituents.
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Effect of Martian atmosphere on aerodynamic performance of supersonic parachute two-body systems

Chinese Journal of Aeronautics, 2022
He Jia, Wei Rong, Chih-Yung Wen
exaly  

Martian Dust Storms and Gravity Waves: Disentangling Water Transport to the Upper Atmosphere

Journal of Geophysical Research E: Planets, 2022
Dmitry S Shaposhnikov, Alexander S Medvedev, A V Rodin   +2 more
exaly  

Behavior of dust in the Martian atmosphere

2001
Two aspects of the dust cycle on Mars are examined: the seasonal variation of dust aerosols in the atmosphere as observed by spacecraft and dust lifting by high wind stress at the south pole during late spring employing a specially developed mesoscale atmospheric model.
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