Unstable Layers in the Mesopause Region Observed with Na Lidar During the Turbulent Oxygen Mixing Experiment (TOMEX) Campaign

Authors

Alan Z. Liu, Embry Riddle Aeronautical University - Daytona BeachFollow
Raymond G. Roble, National Center for Atmospheric ResearchFollow
James H. Hecht, The Aerospace CorporationFollow
Miguel F. Larsen, Clemson UniversityFollow
Chester S. Gardner, University of Illinois at Urbana-ChampaignFollow

Document Type

Article

Publication/Presentation Date

1-17-2004

Abstract/Description

The Na wind/temperature lidar located at Starfire Optical Range near Albuquerque, New Mexico, provided real time measurements of wind, temperature, and Na density in the mesopause region during the TOMEX rocket campaign in October 2000. The state of the atmosphere in which the rocket was launched into was examined using the lidar measurements. Both convectively and dynamically unstable layers were observed at various times and altitudes during the night. The low convective stability region below 90 km was found to be associated with the diurnal tide. The unstable layers are the combined results of wave and tidal perturbations. Comparison with the thermosphere/ionosphere/mesopshere/electrodynamics general circulation model (TIMEGCM) simulation showed that the model can produce the general feature of the observed atmospheric structure (but with a much smaller diurnal amplitude in temperature), which likely leads to underestimate of instability and gravity wave effects.

Publication Title

Journal of Geophysical Research

Scholarly Commons Citation

Liu, A. Z., Roble, R. G., Hecht, J. H., Larsen, M. F., & Gardner, C. S. (2004). Unstable Layers in the Mesopause Region Observed with Na Lidar During the Turbulent Oxygen Mixing Experiment (TOMEX) Campaign. Journal of Geophysical Research, 109(). Retrieved from https://commons.erau.edu/db-physical-sciences/26