Accession Number : ADA257341


Title :   The Atmospheric Emission Method of Calculating the Neutral Atmosphere and Charged Particle Densities in the Upper Atmosphere


Descriptive Note : Master's thesis


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : McElroy, Jr, Kenneth L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a257341.pdf


Report Date : Dec 1992


Pagination or Media Count : 87


Abstract : This thesis presents a method for the determination of neutral gas densities in the ionosphere from rocket-borne measurements of UV atmospheric emissions. Computer models were used to calculate an initial guess for the neutral atmosphere. Using this neutral atmosphere, intensity profiles for the N2 (0,5) Vegard-Kaplan band, the N2 Lyman-Birge-Hopfield band system, and the OI2972 A line were calculated and compared with the March 1990 NPS MUSTANG data. The neutral atmospheric model was modified and the intensity profiles recalculated until a fit with the data was obtained. The neutral atmosphere corresponding to the intensity profile that fit the data was assumed to be the atmospheric composition prevailing at the time of the observation. The ion densities were then calculated from the neutral atmosphere using a photochemical model. The electron density profile calculated by this model was compared with the electron density profile measured by the U.S. Air Force Geophysics Laboratory at a nearby site. Ionosphere composition modelling.


Descriptors :   *IONOSPHERE , *MEASUREMENT , *ION DENSITY , *UPPER ATMOSPHERE , EMISSION , MODELS , ELECTRON DENSITY , THESES , ATMOSPHERICS , DETERMINATION , TIME , INTENSITY , NEUTRAL , IONS , DENSITY


Subject Categories : Atmospheric Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE