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oai:www.ideals.illinois.edu:2142/81253 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Gardner, Chester S. Qian, Jun 2015-09-25T20:10:16Z 2015-09-25T20:10:16Z 10000-01-01 1998 1998 Finally, a new gravity wave spectral model is developed. We employ more realistic models of the source spectra and diffusive filtering theory (DFT) to model the one-dimensional and two-dimensional spectra of horizontal and vertical winds, atmospheric density, and temperature. Although more complicated, this new DFT model apparently overcomes the discrepancies between some recent observations and the existing DFT model predictions. Airglow and Na-layer parameter spectra are important because they can be used to characterize the small vertical wave number region of the wave spectrum, which is relatively unaffected by dissipation. The new DFT model is used to model the horizontal wave number spectra of OH- and Na-layer parameters. The model spectra are compared with extensive lidar, balloon, and airglow imager observations obtained at a variety of sites and altitudes during the past decade. Made available in DSpace on 2015-09-25T20:10:16Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9904566.pdf: 5053081 bytes, checksum: c3950ad4f47ee71a980f9c23228833fe (MD5) Previous issue date: 1998 Embargo set by: Seth Robbins for item 82534 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 103 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998. http://hdl.handle.net/2142/81253 (MiAaPQ)AAI9904566 eng Physics, Atmospheric Science Middle Atmosphere Structure and Dynamics: Lidar Studies and Gravity Wave Spectral Modeling text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.