Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"Atmospheric Gravity Waves"”.
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Electromagnetic effects of atmospheric gravity waves,
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1967.
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Atmospheric gravity waves: an observational and numerical study,
Thesis (Ph D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Nonlinear behavior in the propagation of atmospheric gravity waves
… data from remote sensing systems measuring upper atmospheric parameters, a tool was developed that would allow the simulation of the nonlinear aspects of the propagation of the waves thought to drive the global circulation of the mesosphere-gravity waves. The results from two numerical experiments …
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A nonlinear investigation of singular levels for internal atmospheric gravity waves.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1970.
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Studies of Atmospheric Gravity Waves in the Mesopause Region Using Airglow Imaging
… for investigating vertical properties of gravity waves such as wave damping and breaking phenomena.
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Estimation of the vertical wavelength of atmospheric gravity waves from airglow imagery
… objective of making stereoscopic observations of atmospheric gravity waves (AGWs). As AGWs propagate vertically, they spatially perturb the airglow emission layers in all three dimensions. Estimates of the vertical wavelength, horizontal wavelength, and the intrinsic frequency are needed to …
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Preliminary design of the LAICE-F mission to study atmospheric gravity waves
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Investigation of Mountain Waves in the Mesosphere over the Andes Mountains
… the Andes, with the purpose of investigating the atmospheric gravity waves generated when low level wind blows over the high mountains (referred to as Mountain Waves). These types of waves are a special case of atmospheric gravity waves, which carry significant momentum and exert strong forcing to …
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Development of ground and space based instrumentation for middle and upper atmospheric studies
… with this system is to obtain measurements of atmospheric tides, planetary and gravity wave amplitudes and phase in the lower thermosphere. Measurement of waves into the lower thermosphere is accomplished using Rayleigh lidar methods with high power-aperture (PA) products using new technology …
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Rocket-borne Instrument Design to Observe Peak OH Meinel Band Vibrational Emission Profiles
… the ability to observe vertical propagation of atmospheric gravity waves and other large-scale atmospheric disturbances with high altitude resolution using ground-based observations of the OH emission spectrum.</p>
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Estimation of Intrinsic Gravity Wave Parameters From Multiple, Ground-Based Observations of a Single Mesopheric Airglow Emission
… to estimate key intrinsic parameters of atmospheric gravity waves (AGWs). As AGWs propagate through the mesosphere, they spatially and temporally perturb mesospheric airglow emissions, which, from the ground, can be imaged using large-format CCD cameras retrofitted with spectroscopic …
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Medium Scale Travelling Ionospheric Disturbances sensed with GNSS TEC and SuperDARN
… of electrodynamic instability processes and atmospheric gravity waves (AGWs) in driving the MSTIDs were not determined. GNSS TEC fluctuations associated with the MSTIDs were strong, reaching up to half of background TEC. In SuperDARN, MSTID signatures were observed in power measurements. …
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An Electrometer Design and Characterization for a CubeSat Neutral Pressure Instrument
… orbit (LEO) can facilitate the monitoring of atmospheric gravity waves, which can trigger instabilities that severely disrupt radio frequency communication signals. The Space Neutral Pressure Instrument (SNeuPI) is a low-power instrument detecting neutral gas density in order to determine …
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Fabry-Perot Observations of Midlatitude Neutral Winds and Atmospheric Gravity Wave Activity
… the upper atmosphere is modulated by a number of atmospheric waves propagating upward from various sources in the lower atmosphere. Among these are atmospheric gravity waves which have been recognized as a major source of momentum and energy in the mesosphere and lower thermosphere as well as a …
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Application and simulation of imaging Fabry-Perot interferometers to observe the upper atmosphere
… framework to test the ability of FPIs to detect atmospheric gravity waves (AGWs). A two-FPI strategy shows a higher possibility for detecting an AGW when the two FPIs are observing common volumes in the upper atmosphere at orthogonal look directions. We show how periodogram analysis can determine …
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Investigation of a gravity wave ducting event in the upper mesosphere
Atmospheric gravity waves (GWs) play an important role in the transport of energy and momentum throughout the Earth’s atmosphere. GW effects couple the lower regions of the atmosphere with the middle and upper regions of the atmosphere and the neutral atmosphere with the ionosphere. The effects are …
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Regional flow conditions associated with stratocumulus cloud-clearing events over the southeast Atlantic
… events may be caused by westward-propagating atmospheric gravity waves rather than simple advection of the cloud boundary. The gravity waves are hypothesized to be excited by an interaction between offshore flow from the African continent and the stratocumulus-topped marine boundary layer. The …
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Seasonal and spatial structure of the gravity waves and vertical winds over the central USA derived from the NOAA Profiler Network data
Data from the National Oceanic and Atmospheric Administration wind profiling radar network for the period 2002 2005 were used to investigate the effects of precipitation, topography and gravity waves on the measurements of winds by wind profilers, and to study the climatology and sources of …
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On the Variation of Gravity Wave Activity through the Solar Cycle at the South Pole
<p>Atmospheric dynamics comprise of a multitude of phenomena from various sources that affect the entire climate of the globe. Some of these phenomena include Atmospheric Gravity Waves which are ubiquitous features around the planet. They are important mechanisms for the transport of momentum and …
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