Gravity Waves Observed By Ionospheric Temperature Measurements In The F Region
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Author | : K. K. Harris |
Publisher | : |
Total Pages | : 8 |
Release | : 1968 |
Genre | : |
ISBN | : |
Ion temperature measurements below the F peak have revealed the presence of a fine structure in the ionospheric temperature. The measurements were made with an Ion Energy Analyzer carried aboard a low-altitude polar-orbiting satellite. The temporal resolution of the Ion Energy Analyzer was 3 seconds corresponding to a horizontal spatial resolution of approximately 23 km. At the altitudes of these measurements the ions and neutral species of the atmosphere have a common temperature; thus the temperature structure present in the ion temperature must also be present in the neutral atmosphere as well. The temperature structure is observed to have a wave-like character with wavelength of the order of 200 km. The fractional temperature variation is typically 13%. Much of the observed wave structure is interpreted as internal atmospheric gravity waves, and the results obtained here are compared with the existing theory. A large portion of the wave structure observed cannot be explained on the basis of the simple linearized gravity wave theory. This wave structure is either the result of some as yet unspecified phenomenon or is the result of gravity waves in a real atmosphere where the idealized conditions and restriction from linearization are removed. (Author).
Author | : S. P. Zimmerman |
Publisher | : |
Total Pages | : 26 |
Release | : 1970 |
Genre | : Atmosphere, Upper |
ISBN | : |
Temperature height profiles determined from falling sphere and Arcasonde measurements, made at White Sands, New Mexico from 23 to 25 January 1967, exhibit unusually large variability in the vicinity of the mesopause. Spatial and temporal analysis of the data exhibit a wave-like structure with vertical half wavelengths of the order of 3 and 30 km and a characteristic period of approximately 12 hours for the longer wavelength. Comparison with meteorological data below 60 km and application of appropriate theory leads to the tentative suggestion that the observed temperature variations were due to internal gravity waves. The analysis also infers that the source of these waves was a large scale, low altitude (approximately 200 mb) synoptic disturbance. This work has been performed in support of re-entry studies for Air Force space vehicles and investigations for improving DOD missile impact prediction capability. (Author).
Author | : |
Publisher | : DIANE Publishing Inc. |
Total Pages | : 61 |
Release | : 2006 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 640 |
Release | : 1975 |
Genre | : Nuclear energy |
ISBN | : |
Author | : Thomas Martin Georges |
Publisher | : |
Total Pages | : 356 |
Release | : 1967 |
Genre | : Ionosphere |
ISBN | : |
Author | : Mangalathayil Ali Abdu |
Publisher | : Springer Science & Business Media |
Total Pages | : 479 |
Release | : 2011-02-26 |
Genre | : Science |
ISBN | : 9400703260 |
This book is a multi-author treatise on the most outstanding research problems in the field of the aeronomy of the Earth’s atmosphere and ionosphere, encompassing the science covered by Division II of the International Association of Geomagnetism and Aeronomy (IAGA). It contains several review articles and detailed papers by leading scientists in the field. The book is organized in five parts: 1) Mesosphere-Lower Thermosphere Dynamics and Chemistry; 2) Vertical Coupling by Upward Propagating Waves; 3) Ionospheric Electrodynamics and Structuring; 4) Thermosphere- Ionosphere Coupling, Dynamics and Trends and 5) Ionosphere-Thermosphere Disturbances and Modeling. The book consolidates the progress achieved in the field in recent years and it serves as a useful reference for graduate students as well as experienced researchers.
Author | : PLUMB |
Publisher | : Birkhäuser |
Total Pages | : 465 |
Release | : 2013-11-21 |
Genre | : Science |
ISBN | : 3034858256 |
PAGEOPH, stratosphere, these differences provide us with new evidence, interpretation of which can materially help to advance our understanding of stratospheric dynamics in general. It is now weil established that smaller-scale motions-in particular gravity waves and turbulence-are of fundamental importance in the general circulation of the mesosphere; they seem to be similarly, if less spectacularly, significant in the troposphere, and probably also in the stratosphere. Our understanding of these motions, their effects on the mean circulation and their mutual interactions is progressing rapidly, as is weil illustrated by the papers in this issue; there are reports of observational studies, especially with new instruments such as the Japanese MV radar, reviews of the state of theory, a laboratory study and an analysis of gravity waves and their effects in the high resolution "SKYHI" general circulation model. There are good reasons to suspect that gravity waves may be of crucial significance in making the stratospheric circulation the way it is (modeling experience being one suggestive piece of evidence for this). Direct observational proof has thus far been prevented by the difficulty of making observations of such scales of motion in this region; in one study reported here, falling sphere observations are used to obtain information on the structure and intensity of waves in the upper stratosphere.
Author | : |
Publisher | : |
Total Pages | : 172 |
Release | : 1969 |
Genre | : Noctilucent clouds |
ISBN | : |
Author | : Colin O. Hines |
Publisher | : American Geophysical Union |
Total Pages | : 1013 |
Release | : 1974 |
Genre | : Science |
ISBN | : 0875900186 |
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 18. I am advised that a preface, though not necessary, would at least be conventional. Since this provides the one opportunity for conventionality that the volume as a whole opens up, it would be churlish of me to decline. A preface normally includes, I am told, an indication of both the reason that underlies the volume's very existence and the individuals to whom the volume is directed. But part of the reason for the volume's existence lies, strange though it may seem, in communicating the reason for the volume's existence. Since prefaces generally go unread, I would be remiss if I attempted that communication here. Instead, I have left the attempt to the Introduction and Key, which I believe has a better chance of being read. Let us be willing to settle, for the moment, on the truly fundamental fact that the volume was prepared because I was prepared to prepare it and a publisher was prepared to publish it. As to the intended readers; they too, must wait for their identification in the Introduction and Key, unless they are willing to settle at this point on an identification as those who might be ready to read what I was prepared to prepare.
Author | : Clark Anson Miller |
Publisher | : |
Total Pages | : 680 |
Release | : 1996 |
Genre | : |
ISBN | : |