General Overview
Online Documents
Access to Data
Daily Observation History
Photo Gallery
Related Sites
Rules of the Road
TIDI Web Site
The Final Word
Validation of Winds from the High Resolution Doppler Imager on UARS
M. D. Burrage, W. R. Skinner, A. R. Marshall, P. B. Hays, R. S. Lieberman, S. J. Franke, D. A. Gell, D. A. Ortland, F. J. Schmidlin, R. A. Vincent, and D. L. Wu (1994), Validation of Winds from the High Resolution Doppler Imager on UARS, SPIE, VOL. 2266, PAGES 294-306, July 1994.


Horizontal winds in the mesosphere and lower thermosphere are obtained with the High Resolution Doppler Imager (HRDI) on the Upper Atmosphere Research Satellite (UARS) by observing the Doppler shifts of emission lines in the O2 Atmospheric band. The validity of the measurement depends on an accurate knowlwdge of the positions on the detector of the observed lines in the absence of a wind induced Doppler shift. These positions have been determined to an accuracy of better than 5 ms-1 from the comparison of winds measured by HRDI wither those obtained by MF radars and rockets. In addition, the degrees of hortizontal and vertical smoothing of the recovered wind profiles have been optimized by examining the effect both on the amplitude of the HRDI derived diurnal tidal amplitude and the variance of the wind differences with correlative data.