Instruments:uilana

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University of Illinois Sodium Lidar at Arecibo

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Instrument/Model Description

This data set was taken by the University of Illinois sodium (Na) lidar team in support of the AIDA Act'89 (Arecibo Initiative of Dynamics in the Atmosphere) campaign carried out at the Arecibo Observatory (18.3N, 66.75W). The data were taken by Chris Hostetler c.a.hostetler@larc.nasa.gov.

The operating wavelength was 589 nm with a range resolution of 37.5 meters and an integration period of approximately 23 seconds. This integration period corresponds to 4500 laser pulses. In the sodium lidar mode, data were obtained at altitudes between 75 and 110 km, while in the rayleigh lidar mode, data were obtained at altitudes between 20 and 70 km. Approximately 5 seconds are required to store each profile before beginning the next integration period. The lidar pointing was fixed at the zenith.

Summary plots of the mean sodium density between 70 and 120 km for 2 different nights are provided, with the relative neutral density between 20 and 70 km below each sodium density plot. The density is relative to the neutral density around 40 km. Bin sizes are 15 min in time and 0.5 km in height for the sodium density and 2.5 km in height for the relative neutral density.

AIDA Act-89 Lidar References

T. J. Beatty, R. L. Collins, C. S. Gardner, C. A. Hostetler, C. F. Sechrist, C. A. Tepley, "Simultaneous radar and lidar observations of sporadic E and Na layers at Arecibo", Geophys. Res. Lett., vol. 16, no. 9, pp. 1019-1022, September 1989.
T. J. Beatty, C. A. Hostetler and C. S. Gardner, "Lidar observations of gravity waves and their spectra near the mesopause and stratopause at Arecibo", J. Atmos. Sci., vol. 49, no. 6, pp. 477-497, March 15, 1992.
T. J. Kane, C. S. Gardner, Q. Zhou, J. D. Mathews and C. A. Tepley, "Lidar, radar and airglow observations of a prominent sporadic Na/sporadic E layer event at Arecibo during AIDA 89", J. Atmos. Terr. Phys., vol. 55, no. 3, pp. 499-511, March 1993.
D. C. Senft, C. A. Hostetler and C. S. Gardner, "Characteristics of gravity wave activity and spectra in the upper stratosphere and upper mesosphere at Arecibo during early April 1989", J. Atmos. Terr. Phys.,.vol. 55, no. 3, pp. 425-439, March 1993.
J. D. Mathews, Q. Zhou, C. R. Philbrick, Y. T. Morton and C. S. Gardner, "Observations of Ion and sodium layer coupled processes during AIDA", J. Atmos. Terr. Phys., vol. 55, no. 3, pp. 487-498, March 1993.
J. H. Hecht, T. J. Kane, R. L. Walterscheid, C. S. Gardner and C. A. Tepley, "Simultaneous nightglow and Na lidar observations at Arecibo during the AIDA-89 campaign", J. Atmos. Terr. Phys., vol. 55, no. 3, pp. 409-423, March 1993.

Summary Plots for University of Illinois Sodium Lidar at Arecibo

  • 1989, Jan 15-16, 17-18
  • 1989, Jan 18-19,19-20
  • 1989, Mar 07-08, 08-09
  • 1989, Mar 09-10, 10-11
  • 1989, Mar 13-14, 20-21
  • 1989, Mar 25-26, 26-27
  • 1989, Mar 27-28, 28-29
  • 1989, Mar 29-30, 30-31
  • 1989, Apr 31-May 01, 03-04
  • 1989, Apr 05-06, 06-07
  • 1989, Apr 07-08, 08-09
  • 1989, Apr 09-10, 10-11
  • 1989, Apr 12-13, 13-14
  • 1989, Apr 14-15

-Revised 24 Aug 2005 by Barbara Emery