S
Steven J. Franke
Researcher at University of Illinois at Urbana–Champaign
Publications - 136
Citations - 5680
Steven J. Franke is an academic researcher from University of Illinois at Urbana–Champaign. The author has contributed to research in topics: Mesosphere & Thermosphere. The author has an hindex of 38, co-authored 136 publications receiving 5344 citations. Previous affiliations of Steven J. Franke include Urbana University & Utah State University.
Papers
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Journal ArticleDOI
Empirical wind model for the upper, middle and lower atmosphere
A. E. Hedin,E. L. Fleming,A. H. Manson,F. J. Schmidlin,Susan K. Avery,R.R. Clark,Steven J. Franke,Grahame J. Fraser,Toshitaka Tsuda,François Vial,Robert A. Vincent +10 more
TL;DR: In this article, the HWM90 thermospheric wind model has been revised in the lower thermosphere and extended into the mesosphere, stratosphere and lower atmosphere to provide a single analytic model for calculating zonal and meridional wind profiles representative of the climatological average for various geophysical conditions.
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Ionospheric imaging using computerized tomography
TL;DR: In this paper, the authors formulated the CT problem as it applies to ionospheric imaging and investigated the limitations of the CT technique in the presence of multiple ground stations, assuming a 1000km-altitude polar-orbiting satellite and both five and three ground stations.
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Application of computerized tomography to the investigation of ionospheric structures
TL;DR: In this paper, a method for approximating the peak height and scale height of the electron density profile is discussed as well as a reconstruction technique based on the multiplicative algebraic reconstruction technique algorithm and a back projection based initial guess.
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Seasonal variations of the semi-diurnal and diurnal tides in the MLT: multi-year MF radar observations from 2 to 70°N, and the GSWM tidal model
A. H. Manson,Chris Meek,Maura E. Hagan,Chris Hall,Wayne K. Hocking,John MacDougall,Steven J. Franke,Dennis M. Riggin,David C. Fritts,Robert A. Vincent,M. D. Burrage +10 more
TL;DR: In this article, the authors compare the results of 6 medium frequency radars (MFRs) and the Global Scale Wave Model (GSWM) for 3-month seasons.
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Wave breaking signatures in OH airglow and sodium densities and temperatures: 1. Airglow imaging, Na lidar, and MF radar observations
James H. Hecht,Richard L. Walterscheid,David C. Fritts,Joseph R. Isler,Daniel C. Senft,Chester S. Gardner,Steven J. Franke +6 more
TL;DR: In this paper, small-scale structures were observed for about 20 min and appear to be associated with an overturned or breaking atmospheric gravity wave as observed by the lidar, which had a horizontal wavelength of between 500 and 1500 km, a vertical wavelength of about 6 km and an observed period of between 4 and 6 hours.