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Alan Z Liu

Selected Works

TOMEX

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Airglow Emissions And Oxygen Mixing Ratios From The Photometer Experiment On The Turbulent Oxygen Mixing Experiment (Tomex), J. H. Hecht, Alan Z. Liu, R. L. Walterscheid, R. G. Roble, M. F. Larsen, J. H. Clemmons Oct 2013

Airglow Emissions And Oxygen Mixing Ratios From The Photometer Experiment On The Turbulent Oxygen Mixing Experiment (Tomex), J. H. Hecht, Alan Z. Liu, R. L. Walterscheid, R. G. Roble, M. F. Larsen, J. H. Clemmons

Alan Z Liu

The Turbulent Oxygen Mixing Experiment (TOMEX) combined Na lidar measurements from Starfire Optical Range in Albuquerque, New Mexico, with a launch of a payload from White Sands Missile Range (WSMR), located a little over 100 km from Starfire. The payload included a trmethyl aluminum release to measure winds and diffusion, a 5-channel ionization gauge to measure neutral densities, and a 3-channel photometer experiment to measure atomic oxygen related airglow. The payload was launched at 0957 UT on 26 October 2000 and successfully obtained data from all the experiments. The photometer experiment consisted of three liquid nitrogen cooled filter photometers which …


Unstable Layers In The Mesopause Region Observed With Na Lidar During The Turbulent Oxygen Mixing Experiment (Tomex) Campaign, Alan Z. Liu, Raymond G. Roble, James H. Hecht, Miguel F. Larsen, Chester S. Gardner Oct 2013

Unstable Layers In The Mesopause Region Observed With Na Lidar During The Turbulent Oxygen Mixing Experiment (Tomex) Campaign, Alan Z. Liu, Raymond G. Roble, James H. Hecht, Miguel F. Larsen, Chester S. Gardner

Alan Z Liu

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 …