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Showing 1 to 20 of 79 for “"upper atmosphere"”.
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Stellar occultation observations of Saturn's upper atmosphere
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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Stellar occultation studies of Saturn's upper atmosphere
The properties of Saturn's upper atmosphere are not well-known despite several spacecraft flybys. However, the region of 1-100 [mu]bar can be studied in detail by observing stellar occultations -- when the planet passes in front of a star -- from ground-based or Earth-orbiting telescopes. We use …
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Modeling the Energetics of the Upper Atmosphere
… oxide (NO) is a minor species in the Earth’s atmosphere whose densities have been measured to closely reflect solar energy deposition above 100 km. It is an efficient emitter in the infrared where the thermosphere is optically thin, and serves as an important source of radiative cooling …
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Long Range Transport of Microorganisms in the Upper Atmosphere
Microorganisms are abundant in the atmosphere and can be transported globally on winds. In general, the upper atmosphere is an understudied, extremely harsh environment where the limits of life can be tested unlike anywhere else on our planet. However, the challenge of collecting samples (and …
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Remote sounding of the upper atmosphere by microwave measurements.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1965. Ph.D.
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The Propagation of Planetary Scale Waves Into The Upper Atmosphere
Made available in DSpace on 2015-05-13T15:22:00Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7616190.PDF: 8934559 bytes, checksum: ffd90ca223214629909a14bc50ceec67 (MD5) Previous issue date: 1976
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The propagation of planetary-scale waves into the upper atmosphere
… of planetary scale waves in the earth's atmosphere is derived by scaling a generalized form of Laplace's tidal equation. Quasi-analytic solutions to the propagation equation are obtained for certain model atmospheres in terms of approximate Hough functions and other special functions. …
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Turbulent diffusion of sodium vapor trails in the upper atmosphere
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1964.
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Study of the Martian upper atmosphere using radio tracking data
… the first in situ observations of the Martian atmosphere were made by the twin Viking landers, we have learned considerably more about its composition, dynamics and variability. Not only did the new data on global atmospheric densities generate opportunities to understand the atmospheric …
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Occultation astronomy and instrumentation : studies of the Uranian upper atmosphere
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1989.
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Recovering the hydrocarbon distributions in Saturn's upper atmosphere through mathematical inversion.
… the ultraviolet absorption properties of the upper atmosphere of Saturn. In the extreme-ultraviolet wavelength region from 1300 Å to 1700 Å, CH₄, C₂H₂, C₂H₄, C₂H₆ and C₄H₂ are the major absorbers in the Saturnian upper atmosphere. In this dissertation, using the linear constrained matrix …
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Application and simulation of imaging Fabry-Perot interferometers to observe the upper atmosphere
… winds are important parameters in the study of upper atmosphere dynamics. The Fabry-Perot interferometer (FPI) is a spectroscopic instrument which facilitates these measurements by observing the naturally occurring airglow emissions in the thermosphere. This dissertation focuses on the …
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The transport of nitric oxide in the upper atmosphere by planetary waves and the zonal mean circulation
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-13T18:43:06Z No. of bitstreams: 1 1982_jones.pdf: 9741338 bytes, checksum: 24ff17e826b916881fcc37f2b20a79d1 (MD5)
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Analysis of the application of collision cross sections and ion neutral reaction rates in the upper atmosphere modeling
… and ion-neutral reaction rates) used in the upper atmospheric modeling for Earth and other planets are presented. This work gives the first complete compendium of the electron impact cross sections and ion neutral reaction rates used in aeronomic studies. This data are presented in an …
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Saturn’s Upper Atmosphere in the Ultraviolet: Temperature and Compositional Trends from Cassini UVIS with Implications for Energy Balance and Dynamics
… providing unprecedented insights into Saturn's atmosphere. By offering simultaneous latitude coverage and seasonal constraints, these observations enable a detailed exploration of composition and temperature variations across the middle and upper atmosphere. This work has produced the first 2D …
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A study of the moving flame effect in three dimensions and its implications for the general circulation of the upper atmosphere of Venus
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1982.
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Vertically Propagating Tides in the Martian Atmosphere
… significantly influence the dynamics of Mars' upper atmosphere. The impact of tides on the mean state of the present-day Martian atmosphere is especially large at high altitudes. Certain tides can propagate away from the region of generation in the lower atmosphere and reach the upper …
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Conductivity Modulation of Magnetosphere-Ionosphere Coupling
Earth's ionosphere is a region of the upper atmosphere that consists of an energetic and electromagnetically reactive plasma. This region plays an important role in over-the-horizon and satellite radio communications, satellite orbits, and can electrically couple into human infrastructure like …
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The stability of short-period extrasolar giant planets
… the different physical processes expected in the upper atmospheres and ionospheres of extrasolar giant planets. Modelling the upper atmosphere is important because the stability of the atmosphere against thermal evaporation is controlled by the conditions in the thermosphere. The thermosphere is …
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Infrasound as upper atmospheric monitor
… and specification of the higher altitudes of the atmosphere with global coverage over all local times is hampered by the challenges of obtaining direct measurements in the upper atmosphere. Methods to measure the properties of the atmosphere above the stratopause is an active area of scientific …
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