NDLI: Empirical wind model for the middle and lower atmosphere. part 2: local time variations

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Empirical wind model for the middle and lower atmosphere. part 2: local time variations

Content Provider	NASA Technical Reports Server (NTRS)
Author	Fleming, E. L. Schmidlin, F. J. Clark, R. R. Manson, A. H. Tsuda, T. Vial, F. Hedin, A. E. Avery, S. K. Franke, S. J. Fraser, G. J.
Copyright Year	1993
Description	The HWM90 thermospheric wind model was revised in the lower thermosphere and extended into the mesosphere 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. Local time variations in the mesosphere are derived from rocket soundings, incoherent scatter radar, MF radar, and meteor radar. Low-order spherical harmonics and Fourier series are used to describe these variations as a function of latitude and day of year with cubic spline interpolation in altitude. The model represents a smoothed compromise between the original data sources. Although agreement between various data sources is generally good, some systematic differences are noted. Overall root mean square differences between measured and model tidal components are on the order of 5 to 10 m/s.
File Size	3286308
Page Count	108
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940017389
Archival Resource Key	ark:/13960/t6k120q3p
Language	English
Publisher Date	1993-11-01
Access Restriction	Open
Subject Keyword	Meteorology And Climatology Meridional Flow Thermosphere Spherical Harmonics Atmospheric Models Zonal Flow Meteorology Wind Profiles Fourier Series Lower Atmosphere Middle Atmosphere Incoherent Scatter Radar Spline Functions Mathematical Models Wind Meteorology Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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